/*******************************************************************************
 * Copyright (c) 2000, 2015 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.graphics;


import org.eclipse.swt.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gdip.*;
import org.eclipse.swt.internal.win32.*;

/**
 * Class <code>GC</code> is where all of the drawing capabilities that are 
 * supported by SWT are located. Instances are used to draw on either an 
 * <code>Image</code>, a <code>Control</code>, or directly on a <code>Display</code>.
 * <dl>
 * <dt><b>Styles:</b></dt>
 * <dd>LEFT_TO_RIGHT, RIGHT_TO_LEFT</dd>
 * </dl>
 * 
 * <p>
 * The SWT drawing coordinate system is the two-dimensional space with the origin
 * (0,0) at the top left corner of the drawing area and with (x,y) values increasing
 * to the right and downward respectively.
 * </p>
 * 
 * <p>
 * The result of drawing on an image that was created with an indexed
 * palette using a color that is not in the palette is platform specific.
 * Some platforms will match to the nearest color while other will draw
 * the color itself. This happens because the allocated image might use
 * a direct palette on platforms that do not support indexed palette.
 * </p>
 * 
 * <p>
 * Application code must explicitly invoke the <code>GC.dispose()</code> 
 * method to release the operating system resources managed by each instance
 * when those instances are no longer required. This is <em>particularly</em>
 * important on Windows95 and Windows98 where the operating system has a limited
 * number of device contexts available.
 * </p>
 * 
 * <p>
 * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified.
 * </p>
 *
 * @see org.eclipse.swt.events.PaintEvent
 * @see <a href="http://www.eclipse.org/swt/snippets/#gc">GC snippets</a>
 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, PaintExample</a>
 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
 */
public final class GC extends Resource {
	
	/**
	 * the handle to the OS device context
	 * (Warning: This field is platform dependent)
	 * <p>
	 * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT
	 * public API. It is marked public only so that it can be shared
	 * within the packages provided by SWT. It is not available on all
	 * platforms and should never be accessed from application code.
	 * </p>
	 * 
	 * @noreference This field is not intended to be referenced by clients.
	 */
	public long /*int*/ handle;

	Drawable drawable;
	GCData data;

	static final int FOREGROUND = 1 << 0;
	static final int BACKGROUND = 1 << 1;
	static final int FONT = 1 << 2;
	static final int LINE_STYLE = 1 << 3;
	static final int LINE_WIDTH = 1 << 4;
	static final int LINE_CAP = 1 << 5;
	static final int LINE_JOIN = 1 << 6;
	static final int LINE_MITERLIMIT = 1 << 7;
	static final int FOREGROUND_TEXT = 1 << 8;
	static final int BACKGROUND_TEXT = 1 << 9;
	static final int BRUSH = 1 << 10;
	static final int PEN = 1 << 11;
	static final int NULL_BRUSH = 1 << 12;
	static final int NULL_PEN = 1 << 13;
	static final int DRAW_OFFSET = 1 << 14;

	static final int DRAW = FOREGROUND | LINE_STYLE | LINE_WIDTH | LINE_CAP | LINE_JOIN | LINE_MITERLIMIT | PEN | NULL_BRUSH | DRAW_OFFSET;
	static final int FILL = BACKGROUND | BRUSH | NULL_PEN;

	static final float[] LINE_DOT_ZERO = new float[]{3, 3};
	static final float[] LINE_DASH_ZERO = new float[]{18, 6};
	static final float[] LINE_DASHDOT_ZERO = new float[]{9, 6, 3, 6};
	static final float[] LINE_DASHDOTDOT_ZERO = new float[]{9, 3, 3, 3, 3, 3};

/**
 * Prevents uninitialized instances from being created outside the package.
 */
GC() {
}

/**	 
 * Constructs a new instance of this class which has been
 * configured to draw on the specified drawable. Sets the
 * foreground color, background color and font in the GC
 * to match those in the drawable.
 * <p>
 * You must dispose the graphics context when it is no longer required. 
 * </p>
 * @param drawable the drawable to draw on
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the drawable is null</li>
 *    <li>ERROR_NULL_ARGUMENT - if there is no current device</li>
 *    <li>ERROR_INVALID_ARGUMENT
 *          - if the drawable is an image that is not a bitmap or an icon
 *          - if the drawable is an image or printer that is already selected
 *            into another graphics context</li>
 * </ul>
 * @exception SWTError <ul>
 *    <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li>
 * </ul>
 * @see #dispose()
 */
public GC(Drawable drawable) {
	this(drawable, SWT.NONE);
}

/**	 
 * Constructs a new instance of this class which has been
 * configured to draw on the specified drawable. Sets the
 * foreground color, background color and font in the GC
 * to match those in the drawable.
 * <p>
 * You must dispose the graphics context when it is no longer required. 
 * </p>
 * 
 * @param drawable the drawable to draw on
 * @param style the style of GC to construct
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the drawable is null</li>
 *    <li>ERROR_NULL_ARGUMENT - if there is no current device</li>
 *    <li>ERROR_INVALID_ARGUMENT
 *          - if the drawable is an image that is not a bitmap or an icon
 *          - if the drawable is an image or printer that is already selected
 *            into another graphics context</li>
 * </ul>
 * @exception SWTError <ul>
 *    <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li>
 * </ul>
 * 
 * @see #dispose()
 * 
 * @since 2.1.2
 */
public GC(Drawable drawable, int style) {
	if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	GCData data = new GCData ();
	data.style = checkStyle(style);
	long /*int*/ hDC = drawable.internal_new_GC(data);
	Device device = data.device;
	if (device == null) device = Device.getDevice();
	if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	this.device = data.device = device;
	init (drawable, data, hDC);
	init();
}

static int checkStyle(int style) {
	if ((style & SWT.LEFT_TO_RIGHT) != 0) style &= ~SWT.RIGHT_TO_LEFT;
	return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
}

void checkGC(int mask) {
	int state = data.state;
	if ((state & mask) == mask) return;
	state = (state ^ mask) & mask;
	data.state |= mask;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		long /*int*/ pen = data.gdipPen;
		float width = data.lineWidth;
		if ((state & FOREGROUND) != 0 || (pen == 0 && (state & (LINE_WIDTH | LINE_STYLE | LINE_MITERLIMIT | LINE_JOIN | LINE_CAP)) != 0)) {
			if (data.gdipFgBrush != 0) Gdip.SolidBrush_delete(data.gdipFgBrush);
			data.gdipFgBrush = 0;
			long /*int*/ brush;
			Pattern pattern = data.foregroundPattern;
			if (pattern != null) {
				brush = pattern.handle;
				if ((data.style & SWT.MIRRORED) != 0) {
					switch (Gdip.Brush_GetType(brush)) {
						case Gdip.BrushTypeTextureFill:
							brush = Gdip.Brush_Clone(brush);
							if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
							Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
							data.gdipFgBrush = brush;
					}
				}
			} else {
				int foreground = data.foreground;
				int rgb = ((foreground >> 16) & 0xFF) | (foreground & 0xFF00) | ((foreground & 0xFF) << 16);
				long /*int*/ color = Gdip.Color_new(data.alpha << 24 | rgb);
				if (color == 0) SWT.error(SWT.ERROR_NO_HANDLES);
				brush = Gdip.SolidBrush_new(color);
				if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
				Gdip.Color_delete(color);
				data.gdipFgBrush = brush;
			}
			if (pen != 0) {
				Gdip.Pen_SetBrush(pen, brush);
			} else {
				pen = data.gdipPen = Gdip.Pen_new(brush, width);
			}
		}
		if ((state & LINE_WIDTH) != 0) {
			Gdip.Pen_SetWidth(pen, width);
			switch (data.lineStyle) {
				case SWT.LINE_CUSTOM:
					state |= LINE_STYLE;
			}
		}
		if ((state & LINE_STYLE) != 0) {
			float[] dashes = null;
			float dashOffset = 0;
			int dashStyle = Gdip.DashStyleSolid; 
			switch (data.lineStyle) {
				case SWT.LINE_SOLID: break;
				case SWT.LINE_DOT: dashStyle = Gdip.DashStyleDot; if (width == 0) dashes = LINE_DOT_ZERO; break;
				case SWT.LINE_DASH: dashStyle = Gdip.DashStyleDash; if (width == 0) dashes = LINE_DASH_ZERO; break;
				case SWT.LINE_DASHDOT: dashStyle = Gdip.DashStyleDashDot; if (width == 0) dashes = LINE_DASHDOT_ZERO; break;
				case SWT.LINE_DASHDOTDOT: dashStyle = Gdip.DashStyleDashDotDot; if (width == 0) dashes = LINE_DASHDOTDOT_ZERO; break;
				case SWT.LINE_CUSTOM: {
					if (data.lineDashes != null) {
						dashOffset = data.lineDashesOffset / Math.max (1, width);
						dashes = new float[data.lineDashes.length * 2];
						for (int i = 0; i < data.lineDashes.length; i++) {
							float dash = data.lineDashes[i] / Math.max (1, width);
							dashes[i] = dash;
							dashes[i + data.lineDashes.length] = dash;
						}
					}
				}
			}
			if (dashes != null) {
				Gdip.Pen_SetDashPattern(pen, dashes, dashes.length);
				Gdip.Pen_SetDashStyle(pen, Gdip.DashStyleCustom);
				Gdip.Pen_SetDashOffset(pen, dashOffset);
			} else {
				Gdip.Pen_SetDashStyle(pen, dashStyle);
			}
		}
		if ((state & LINE_MITERLIMIT) != 0) {
			Gdip.Pen_SetMiterLimit(pen, data.lineMiterLimit);
		}
		if ((state & LINE_JOIN) != 0) {
			int joinStyle = 0;
			switch (data.lineJoin) {
				case SWT.JOIN_MITER: joinStyle = Gdip.LineJoinMiter; break;
				case SWT.JOIN_BEVEL: joinStyle = Gdip.LineJoinBevel; break;
				case SWT.JOIN_ROUND: joinStyle = Gdip.LineJoinRound; break;
			}
			Gdip.Pen_SetLineJoin(pen, joinStyle);
		}
		if ((state & LINE_CAP) != 0) {
			int dashCap = Gdip.DashCapFlat, capStyle = 0;
			switch (data.lineCap) {
				case SWT.CAP_FLAT: capStyle = Gdip.LineCapFlat; break;
				case SWT.CAP_ROUND: capStyle = Gdip.LineCapRound; dashCap = Gdip.DashCapRound; break;
				case SWT.CAP_SQUARE: capStyle = Gdip.LineCapSquare; break;
			}
			Gdip.Pen_SetLineCap(pen, capStyle, capStyle, dashCap);
		}
		if ((state & BACKGROUND) != 0) {
			if (data.gdipBgBrush != 0) Gdip.SolidBrush_delete(data.gdipBgBrush);
			data.gdipBgBrush = 0;
			Pattern pattern = data.backgroundPattern;
			if (pattern != null) {
				data.gdipBrush = pattern.handle;
				if ((data.style & SWT.MIRRORED) != 0) {
					switch (Gdip.Brush_GetType(data.gdipBrush)) {
						case Gdip.BrushTypeTextureFill:
							long /*int*/ brush = Gdip.Brush_Clone(data.gdipBrush);
							if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
							Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
							data.gdipBrush = data.gdipBgBrush = brush;
					}
				}
			} else {
				int background = data.background;
				int rgb = ((background >> 16) & 0xFF) | (background & 0xFF00) | ((background & 0xFF) << 16);
				long /*int*/ color = Gdip.Color_new(data.alpha << 24 | rgb);
				if (color == 0) SWT.error(SWT.ERROR_NO_HANDLES);
				long /*int*/ brush = Gdip.SolidBrush_new(color);
				if (brush == 0) SWT.error(SWT.ERROR_NO_HANDLES);
				Gdip.Color_delete(color);
				data.gdipBrush = data.gdipBgBrush = brush;
			}
		}
		if ((state & FONT) != 0) {
			Font font = data.font;
			OS.SelectObject(handle, font.handle);
			long /*int*/[] hFont = new long /*int*/[1];
			long /*int*/ gdipFont = createGdipFont(handle, font.handle, gdipGraphics, device.fontCollection, null, hFont);
			if (hFont[0] != 0) OS.SelectObject(handle, hFont[0]);
			if (data.hGDIFont != 0) OS.DeleteObject(data.hGDIFont);
			data.hGDIFont = hFont[0];
			if (data.gdipFont != 0) Gdip.Font_delete(data.gdipFont);
			data.gdipFont = gdipFont;
		}
		if ((state & DRAW_OFFSET) != 0) {
			data.gdipXOffset = data.gdipYOffset = 0;
			long /*int*/ matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
			PointF point = new PointF();
			point.X = point.Y = 1;
			Gdip.Graphics_GetTransform(gdipGraphics, matrix);
			Gdip.Matrix_TransformVectors(matrix, point, 1);
			Gdip.Matrix_delete(matrix);
			float scaling = point.X;
			if (scaling < 0) scaling = -scaling;
			float penWidth = data.lineWidth * scaling;
			if (penWidth == 0 || ((int)penWidth % 2) == 1) {
				data.gdipXOffset = 0.5f / scaling;
			}
			scaling = point.Y;
			if (scaling < 0) scaling = -scaling;
			penWidth = data.lineWidth * scaling;
			if (penWidth == 0 || ((int)penWidth % 2) == 1) {
				data.gdipYOffset = 0.5f / scaling;
			}
		}
		return;
	}
	if ((state & (FOREGROUND | LINE_CAP | LINE_JOIN | LINE_STYLE | LINE_WIDTH)) != 0) {
		int color = data.foreground;
		int width = (int)data.lineWidth;
		int[] dashes = null;
		int lineStyle = OS.PS_SOLID;
		switch (data.lineStyle) {
			case SWT.LINE_SOLID: break;
			case SWT.LINE_DASH: lineStyle = OS.PS_DASH; break;
			case SWT.LINE_DOT: lineStyle = OS.PS_DOT; break;
			case SWT.LINE_DASHDOT: lineStyle = OS.PS_DASHDOT; break;
			case SWT.LINE_DASHDOTDOT: lineStyle = OS.PS_DASHDOTDOT; break;
			case SWT.LINE_CUSTOM: {
				if (data.lineDashes != null) {
					lineStyle = OS.PS_USERSTYLE;
					dashes = new int[data.lineDashes.length];
					for (int i = 0; i < dashes.length; i++) {
						dashes[i] = (int)data.lineDashes[i];
					}
				}
				break;
			}
		}
		if ((state & LINE_STYLE) != 0) {
			OS.SetBkMode(handle, data.lineStyle == SWT.LINE_SOLID ? OS.OPAQUE : OS.TRANSPARENT); 
		}
		int joinStyle = 0;
		switch (data.lineJoin) {
			case SWT.JOIN_MITER: joinStyle = OS.PS_JOIN_MITER; break;
			case SWT.JOIN_ROUND: joinStyle = OS.PS_JOIN_ROUND; break;
			case SWT.JOIN_BEVEL: joinStyle = OS.PS_JOIN_BEVEL; break;
		}
		int capStyle = 0;
		switch (data.lineCap) {
			case SWT.CAP_ROUND: capStyle = OS.PS_ENDCAP_ROUND; break;
			case SWT.CAP_FLAT: capStyle = OS.PS_ENDCAP_FLAT; break;
			case SWT.CAP_SQUARE: capStyle = OS.PS_ENDCAP_SQUARE;break;
		}
		int style = lineStyle | joinStyle | capStyle;
		/*
		* Feature in Windows.  Windows does not honour line styles other then
		* PS_SOLID for pens wider than 1 pixel created with CreatePen().  The fix
		* is to use ExtCreatePen() instead.
		*/
		long /*int*/ newPen;
		if (OS.IsWinCE || (width == 0 && lineStyle != OS.PS_USERSTYLE) || style == 0) {
			newPen = OS.CreatePen(style & OS.PS_STYLE_MASK, width, color);
		} else {
			LOGBRUSH logBrush = new LOGBRUSH();
			logBrush.lbStyle = OS.BS_SOLID;
			logBrush.lbColor = color;
			/* Feature in Windows. PS_GEOMETRIC pens cannot have zero width. */
			newPen = OS.ExtCreatePen (style | OS.PS_GEOMETRIC, Math.max(1, width), logBrush, dashes != null ? dashes.length : 0, dashes);
		}
		OS.SelectObject(handle, newPen);
		data.state |= PEN;
		data.state &= ~NULL_PEN;
		if (data.hPen != 0) OS.DeleteObject(data.hPen);
		data.hPen = data.hOldPen = newPen;
	} else if ((state & PEN) != 0) {
		OS.SelectObject(handle, data.hOldPen);
		data.state &= ~NULL_PEN;
	} else if ((state & NULL_PEN) != 0) {
		data.hOldPen = OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
		data.state &= ~PEN;
	}
	if ((state & BACKGROUND) != 0) {
		long /*int*/ newBrush = OS.CreateSolidBrush(data.background);
		OS.SelectObject(handle, newBrush);
		data.state |= BRUSH;
		data.state &= ~NULL_BRUSH;
		if (data.hBrush != 0) OS.DeleteObject(data.hBrush);
		data.hOldBrush = data.hBrush = newBrush;
	} else if ((state & BRUSH) != 0) {
		OS.SelectObject(handle, data.hOldBrush);
		data.state &= ~NULL_BRUSH;
	} else if ((state & NULL_BRUSH) != 0) {
		data.hOldBrush = OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
		data.state &= ~BRUSH;
	}
	if ((state & BACKGROUND_TEXT) != 0) {
		OS.SetBkColor(handle, data.background);
	}
	if ((state & FOREGROUND_TEXT) != 0) {
		OS.SetTextColor(handle, data.foreground);
	}
	if ((state & FONT) != 0) {
		Font font = data.font;
		OS.SelectObject(handle, font.handle);
	}
}

/**
 * Copies a rectangular area of the receiver at the specified
 * position into the image, which must be of type <code>SWT.BITMAP</code>.
 *
 * @param image the image to copy into
 * @param x the x coordinate in the receiver of the area to be copied
 * @param y the y coordinate in the receiver of the area to be copied
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed</li> 
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void copyArea(Image image, int x, int y) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (image.type != SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);

 	/* Copy the bitmap area */
	Rectangle rect = image.getBounds(); 	
	long /*int*/ memHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ hOldBitmap = OS.SelectObject(memHdc, image.handle);
	OS.BitBlt(memHdc, 0, 0, rect.width, rect.height, handle, x, y, OS.SRCCOPY);
	OS.SelectObject(memHdc, hOldBitmap);
	OS.DeleteDC(memHdc);
}

/**
 * Copies a rectangular area of the receiver at the source
 * position onto the receiver at the destination position.
 *
 * @param srcX the x coordinate in the receiver of the area to be copied
 * @param srcY the y coordinate in the receiver of the area to be copied
 * @param width the width of the area to copy
 * @param height the height of the area to copy
 * @param destX the x coordinate in the receiver of the area to copy to
 * @param destY the y coordinate in the receiver of the area to copy to
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY) {
	copyArea(srcX, srcY, width, height, destX, destY, true);
}

/**
 * Copies a rectangular area of the receiver at the source
 * position onto the receiver at the destination position.
 *
 * @param srcX the x coordinate in the receiver of the area to be copied
 * @param srcY the y coordinate in the receiver of the area to be copied
 * @param width the width of the area to copy
 * @param height the height of the area to copy
 * @param destX the x coordinate in the receiver of the area to copy to
 * @param destY the y coordinate in the receiver of the area to copy to
 * @param paint if <code>true</code> paint events will be generated for old and obscured areas
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public void copyArea(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);

	/*
	* Feature in WinCE.  The function WindowFromDC is not part of the
	* WinCE SDK.  The fix is to remember the HWND.
	*/
	long /*int*/ hwnd = data.hwnd;
	if (hwnd == 0) {
		OS.BitBlt(handle, destX, destY, width, height, handle, srcX, srcY, OS.SRCCOPY);
	} else {
		RECT lprcClip = null;
		long /*int*/ hrgn = OS.CreateRectRgn(0, 0, 0, 0);
		if (OS.GetClipRgn(handle, hrgn) == 1) {
			lprcClip = new RECT();
			OS.GetRgnBox(hrgn, lprcClip);
		}
		OS.DeleteObject(hrgn);
		RECT lprcScroll = new RECT();
		OS.SetRect(lprcScroll, srcX, srcY, srcX + width, srcY + height);
		int flags = paint ? OS.SW_INVALIDATE | OS.SW_ERASE : 0;
		int res = OS.ScrollWindowEx(hwnd, destX - srcX, destY - srcY, lprcScroll, lprcClip, 0, null, flags); 

		/*
		* Feature in WinCE.  ScrollWindowEx does not accept combined
		* vertical and horizontal scrolling.  The fix is to do a
		* BitBlt and invalidate the appropriate source area.
		*/
		if (res == 0 && OS.IsWinCE) {
			OS.BitBlt(handle, destX, destY, width, height, handle, srcX, srcY, OS.SRCCOPY);
			if (paint) {
				int deltaX = destX - srcX, deltaY = destY - srcY;
				boolean disjoint = (destX + width < srcX) || (srcX + width < destX) || (destY + height < srcY) || (srcY + height < destY);
				if (disjoint) {
					OS.InvalidateRect(hwnd, lprcScroll, true);
				} else {
					if (deltaX != 0) {
						int newX = destX - deltaX;
						if (deltaX < 0) newX = destX + width;
						OS.SetRect(lprcScroll, newX, srcY, newX + Math.abs(deltaX), srcY + height);
						OS.InvalidateRect(hwnd, lprcScroll, true);
					}
					if (deltaY != 0) {
						int newY = destY - deltaY;
						if (deltaY < 0) newY = destY + height;
						OS.SetRect(lprcScroll, srcX, newY, srcX + width, newY + Math.abs(deltaY));
						OS.InvalidateRect(hwnd, lprcScroll, true);
					}
				}
			}
		}
	}
}
static long /*int*/ createGdipFont(long /*int*/ hDC, long /*int*/ hFont, long /*int*/ graphics, long /*int*/ fontCollection, long /*int*/ [] outFamily, long /*int*/[] outFont) {
	long /*int*/ font = Gdip.Font_new(hDC, hFont);
	if (font == 0) SWT.error(SWT.ERROR_NO_HANDLES);
	long /*int*/ family = 0;
	if (!Gdip.Font_IsAvailable(font)) {
		Gdip.Font_delete(font);
		LOGFONT logFont = OS.IsUnicode ? (LOGFONT)new LOGFONTW() : new LOGFONTA();
		OS.GetObject(hFont, LOGFONT.sizeof, logFont);
		int size = Math.abs(logFont.lfHeight);
		int style = Gdip.FontStyleRegular;
		if (logFont.lfWeight == 700) style |= Gdip.FontStyleBold;
		if (logFont.lfItalic != 0) style |= Gdip.FontStyleItalic;
		char[] chars;
		if (OS.IsUnicode) {
			chars = ((LOGFONTW)logFont).lfFaceName;
		} else {
			chars = new char[OS.LF_FACESIZE];
			byte[] bytes = ((LOGFONTA)logFont).lfFaceName;
			OS.MultiByteToWideChar (OS.CP_ACP, OS.MB_PRECOMPOSED, bytes, bytes.length, chars, chars.length);
		}
		int index = 0;
		while (index < chars.length) {
			if (chars [index] == 0) break;
			index++;
		}
		String name = new String (chars, 0, index);
		if (Compatibility.equalsIgnoreCase(name, "Courier")) { //$NON-NLS-1$
			name = "Courier New"; //$NON-NLS-1$
		}
		char[] buffer = new char[name.length() + 1];
		name.getChars(0, name.length(), buffer, 0);
		if (fontCollection != 0) {
			family = Gdip.FontFamily_new(buffer, fontCollection);
			if (!Gdip.FontFamily_IsAvailable(family)) {
				Gdip.FontFamily_delete(family);
				family = Gdip.FontFamily_new(buffer, 0);
				if (!Gdip.FontFamily_IsAvailable(family)) {
					Gdip.FontFamily_delete(family);
					family = 0;
				}
			}
		}
		if (family != 0) {
			font = Gdip.Font_new(family, size, style, Gdip.UnitPixel);
		} else {
			font = Gdip.Font_new(buffer, size, style, Gdip.UnitPixel, 0);
		}
		if (outFont != null && font != 0) {
			long /*int*/ hHeap = OS.GetProcessHeap();
			long /*int*/ pLogFont = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, LOGFONTW.sizeof);
			Gdip.Font_GetLogFontW(font, graphics, pLogFont);
			outFont[0] = OS.CreateFontIndirectW(pLogFont);
			OS.HeapFree(hHeap, 0, pLogFont);
		}
	}
	if (outFamily != null && font != 0) {
		if (family == 0) {
			family = Gdip.FontFamily_new();
			Gdip.Font_GetFamily(font, family);
		}
		outFamily [0] = family;
	} else {
		if (family != 0) Gdip.FontFamily_delete(family);
	}
	if (font == 0) SWT.error(SWT.ERROR_NO_HANDLES);
	return font;
}

static void destroyGdipBrush(long /*int*/ brush) {
	int type = Gdip.Brush_GetType(brush);
	switch (type) {
		case Gdip.BrushTypeSolidColor:
			Gdip.SolidBrush_delete(brush);
			break;
		case Gdip.BrushTypeHatchFill:
			Gdip.HatchBrush_delete(brush);
			break;
		case Gdip.BrushTypeLinearGradient:
			Gdip.LinearGradientBrush_delete(brush);
			break;
		case Gdip.BrushTypeTextureFill:
			Gdip.TextureBrush_delete(brush);
			break;
	}
}

/**
 * Disposes of the operating system resources associated with
 * the graphics context. Applications must dispose of all GCs
 * which they allocate.
 * 
 * @exception SWTError <ul>
 *    <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li>
 * </ul>
 */
@Override
void destroy() {
	boolean gdip = data.gdipGraphics != 0;
	disposeGdip();
	if (gdip && (data.style & SWT.MIRRORED) != 0) {
		OS.SetLayout(handle, OS.GetLayout(handle) | OS.LAYOUT_RTL);
	}
	
	/* Select stock pen and brush objects and free resources */
	if (data.hPen != 0) {
		OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
		OS.DeleteObject(data.hPen);
		data.hPen = 0;
	}
	if (data.hBrush != 0) {
		OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
		OS.DeleteObject(data.hBrush);
		data.hBrush = 0;
	}
	
	/*
	* Put back the original bitmap into the device context.
	* This will ensure that we have not left a bitmap
	* selected in it when we delete the HDC.
	*/
	long /*int*/ hNullBitmap = data.hNullBitmap;
	if (hNullBitmap != 0) {
		OS.SelectObject(handle, hNullBitmap);
		data.hNullBitmap = 0;
	}
	Image image = data.image;
	if (image != null) image.memGC = null;
	
	/*
	* Dispose the HDC.
	*/
	if (drawable != null) drawable.internal_dispose_GC(handle, data);
	drawable = null;
	handle = 0;
	data.image = null;
	data.ps = null;
	data = null;
}

void disposeGdip() {
	if (data.gdipPen != 0) Gdip.Pen_delete(data.gdipPen);
	if (data.gdipBgBrush != 0) destroyGdipBrush(data.gdipBgBrush);
	if (data.gdipFgBrush != 0) destroyGdipBrush(data.gdipFgBrush);
	if (data.gdipFont != 0) Gdip.Font_delete(data.gdipFont);
	if (data.hGDIFont != 0) OS.DeleteObject(data.hGDIFont);
	if (data.gdipGraphics != 0) Gdip.Graphics_delete(data.gdipGraphics);
	data.gdipGraphics = data.gdipBrush = data.gdipBgBrush = data.gdipFgBrush =
		data.gdipFont = data.gdipPen = data.hGDIFont = 0;
}

/**
 * Draws the outline of a circular or elliptical arc 
 * within the specified rectangular area.
 * <p>
 * The resulting arc begins at <code>startAngle</code> and extends  
 * for <code>arcAngle</code> degrees, using the current color.
 * Angles are interpreted such that 0 degrees is at the 3 o'clock
 * position. A positive value indicates a counter-clockwise rotation
 * while a negative value indicates a clockwise rotation.
 * </p><p>
 * The center of the arc is the center of the rectangle whose origin 
 * is (<code>x</code>, <code>y</code>) and whose size is specified by the 
 * <code>width</code> and <code>height</code> arguments. 
 * </p><p>
 * The resulting arc covers an area <code>width + 1</code> pixels wide
 * by <code>height + 1</code> pixels tall.
 * </p>
 *
 * @param x the x coordinate of the upper-left corner of the arc to be drawn
 * @param y the y coordinate of the upper-left corner of the arc to be drawn
 * @param width the width of the arc to be drawn
 * @param height the height of the arc to be drawn
 * @param startAngle the beginning angle
 * @param arcAngle the angular extent of the arc, relative to the start angle
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawArc (int x, int y, int width, int height, int startAngle, int arcAngle) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(DRAW);
	if (width < 0) {
		x = x + width;
		width = -width;
	}
	if (height < 0) {
		y = y + height;
		height = -height;
	}
	if (width == 0 || height == 0 || arcAngle == 0) return;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		if (width == height) {
			Gdip.Graphics_DrawArc(gdipGraphics, data.gdipPen, x, y, width, height, -startAngle, -arcAngle);
		} else {
			long /*int*/ path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
			if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			long /*int*/ matrix = Gdip.Matrix_new(width, 0, 0, height, x, y);
			if (matrix == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			Gdip.GraphicsPath_AddArc(path, 0, 0, 1, 1, -startAngle, -arcAngle);
			Gdip.GraphicsPath_Transform(path, matrix);
			Gdip.Graphics_DrawPath(gdipGraphics, data.gdipPen, path);
			Gdip.Matrix_delete(matrix);
			Gdip.GraphicsPath_delete(path);
		}
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
	}
	/*
	* Feature in WinCE.  The function Arc is not present in the
	* WinCE SDK.  The fix is to emulate arc drawing by using
	* Polyline.
	*/
	if (OS.IsWinCE) {
		/* compute arc with a simple linear interpolation */
		if (arcAngle < 0) {
			startAngle += arcAngle;
			arcAngle = -arcAngle;
		}
		if (arcAngle > 360) arcAngle = 360;
		int[] points = new int[(arcAngle + 1) * 2];		
		int cteX = 2 * x + width;
		int cteY = 2 * y + height;
		int index = 0;
		for (int i = 0; i <= arcAngle; i++) {
			points[index++] = (Compatibility.cos(startAngle + i, width) + cteX) >> 1;
			points[index++] = (cteY - Compatibility.sin(startAngle + i, height)) >> 1;
		} 
		OS.Polyline(handle, points, points.length / 2);
	} else {	
		int x1, y1, x2, y2,tmp;
		boolean isNegative;
		if (arcAngle >= 360 || arcAngle <= -360) {
			x1 = x2 = x + width;
			y1 = y2 = y + height / 2;
		} else {
			isNegative = arcAngle < 0;
	
			arcAngle = arcAngle + startAngle;
			if (isNegative) {
				// swap angles
			   	tmp = startAngle;
				startAngle = arcAngle;
				arcAngle = tmp;
			}
			x1 = Compatibility.cos(startAngle, width) + x + width/2;
			y1 = -1 * Compatibility.sin(startAngle, height) + y + height/2;
			
			x2 = Compatibility.cos(arcAngle, width) + x + width/2;
			y2 = -1 * Compatibility.sin(arcAngle, height) + y + height/2; 		
		}
		OS.Arc(handle, x, y, x + width + 1, y + height + 1, x1, y1, x2, y2);
	}
}

/** 
 * Draws a rectangle, based on the specified arguments, which has
 * the appearance of the platform's <em>focus rectangle</em> if the
 * platform supports such a notion, and otherwise draws a simple
 * rectangle in the receiver's foreground color.
 *
 * @param x the x coordinate of the rectangle
 * @param y the y coordinate of the rectangle
 * @param width the width of the rectangle
 * @param height the height of the rectangle
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawRectangle(int, int, int, int)
 */
public void drawFocus (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if ((data.uiState & OS.UISF_HIDEFOCUS) != 0) return;
	data.focusDrawn = true;
	long /*int*/ hdc = handle;
	int state = 0;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		long /*int*/ clipRgn = 0;
		Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
		long /*int*/ rgn = Gdip.Region_new();
		if (rgn == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		Gdip.Graphics_GetClip(gdipGraphics, rgn);
		if (!Gdip.Region_IsInfinite(rgn, gdipGraphics)) {
			clipRgn = Gdip.Region_GetHRGN(rgn, gdipGraphics);
		}
		Gdip.Region_delete(rgn);
		Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
		float[] lpXform = null;
		long /*int*/ matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
		if (matrix == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		Gdip.Graphics_GetTransform(gdipGraphics, matrix);
		if (!Gdip.Matrix_IsIdentity(matrix)) {
			lpXform = new float[6];
			Gdip.Matrix_GetElements(matrix, lpXform);
		}
		Gdip.Matrix_delete(matrix);
		hdc = Gdip.Graphics_GetHDC(gdipGraphics);
		state = OS.SaveDC(hdc);
		if (lpXform != null) {
			OS.SetGraphicsMode(hdc, OS.GM_ADVANCED);
			OS.SetWorldTransform(hdc, lpXform);
		}
		if (clipRgn != 0) {
			OS.SelectClipRgn(hdc, clipRgn);
			OS.DeleteObject(clipRgn);
		}
	}
	OS.SetBkColor(hdc, 0xFFFFFF);
	OS.SetTextColor(hdc, 0x000000);
	RECT rect = new RECT();
	OS.SetRect(rect, x, y, x + width, y + height);
	OS.DrawFocusRect(hdc, rect);
	if (gdipGraphics != 0) {
		OS.RestoreDC(hdc, state);
		Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
	} else {
		data.state &= ~(BACKGROUND_TEXT | FOREGROUND_TEXT);
	}
}

/**
 * Draws the given image in the receiver at the specified
 * coordinates.
 *
 * @param image the image to draw
 * @param x the x coordinate of where to draw
 * @param y the y coordinate of where to draw
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image</li>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * @exception SWTError <ul>
 *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
 * </ul>
 */
public void drawImage(Image image, int x, int y) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true);
}

/**
 * Copies a rectangular area from the source image into a (potentially
 * different sized) rectangular area in the receiver. If the source
 * and destination areas are of differing sizes, then the source
 * area will be stretched or shrunk to fit the destination area
 * as it is copied. The copy fails if any part of the source rectangle
 * lies outside the bounds of the source image, or if any of the width
 * or height arguments are negative.
 *
 * @param image the source image
 * @param srcX the x coordinate in the source image to copy from
 * @param srcY the y coordinate in the source image to copy from
 * @param srcWidth the width in pixels to copy from the source
 * @param srcHeight the height in pixels to copy from the source
 * @param destX the x coordinate in the destination to copy to
 * @param destY the y coordinate in the destination to copy to
 * @param destWidth the width in pixels of the destination rectangle
 * @param destHeight the height in pixels of the destination rectangle
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
 *    <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
 *    <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * @exception SWTError <ul>
 *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
 * </ul>
 */
public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return;
	if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) {
		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
	}
	if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false);	
}

void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
	/* Refresh Image as per zoom level, if required. */
	srcImage.refreshImageForZoom ();

	if (data.gdipGraphics != 0) {
		//TODO - cache bitmap
		long /*int*/ [] gdipImage = srcImage.createGdipImage();
		long /*int*/ img = gdipImage[0];
		int imgWidth = Gdip.Image_GetWidth(img);
		int imgHeight = Gdip.Image_GetHeight(img);
		if (simple) {
			srcWidth = destWidth = imgWidth;
			srcHeight = destHeight = imgHeight;
		} else {
			if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) {
				SWT.error (SWT.ERROR_INVALID_ARGUMENT);
			}
			simple = srcX == 0 && srcY == 0 && 
				srcWidth == destWidth && destWidth == imgWidth &&
				srcHeight == destHeight && destHeight == imgHeight;
		}
		Rect rect = new Rect();
		rect.X = destX;
		rect.Y = destY;
		rect.Width = destWidth;
		rect.Height = destHeight;
		/*
		* Note that if the wrap mode is not WrapModeTileFlipXY, the scaled image
		* is translucent around the borders.
		*/  
		long /*int*/ attrib = Gdip.ImageAttributes_new();
		Gdip.ImageAttributes_SetWrapMode(attrib, Gdip.WrapModeTileFlipXY);
		if (data.alpha != 0xFF) {
			float[] matrix = new float[]{
				1,0,0,0,0,
				0,1,0,0,0,
				0,0,1,0,0,
				0,0,0,data.alpha / (float)0xFF,0,
				0,0,0,0,1,
			};
			Gdip.ImageAttributes_SetColorMatrix(attrib, matrix, Gdip.ColorMatrixFlagsDefault, Gdip.ColorAdjustTypeBitmap);
		}
		int gstate = 0;
		if ((data.style & SWT.MIRRORED) != 0) {
			gstate = Gdip.Graphics_Save(data.gdipGraphics);
			Gdip.Graphics_ScaleTransform(data.gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
			Gdip.Graphics_TranslateTransform(data.gdipGraphics, - 2 * destX - destWidth, 0, Gdip.MatrixOrderPrepend);		 		 		 
		}
		Gdip.Graphics_DrawImage(data.gdipGraphics, img, rect, srcX, srcY, srcWidth, srcHeight, Gdip.UnitPixel, attrib, 0, 0);
		if ((data.style & SWT.MIRRORED) != 0) {
			Gdip.Graphics_Restore(data.gdipGraphics, gstate);
		}
		Gdip.ImageAttributes_delete(attrib);
		Gdip.Bitmap_delete(img);
		if (gdipImage[1] != 0) {
			long /*int*/ hHeap = OS.GetProcessHeap ();
			OS.HeapFree(hHeap, 0, gdipImage[1]);
		}
		return;
	}
	switch (srcImage.type) {
		case SWT.BITMAP:
			drawBitmap(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
			break;
		case SWT.ICON:
			drawIcon(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple);
			break;
	}
}

void drawIcon(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
	int technology = OS.GetDeviceCaps(handle, OS.TECHNOLOGY);

	boolean drawIcon = true;
	int flags = OS.DI_NORMAL;
	int offsetX = 0, offsetY = 0;
	if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(5, 1)) {
		if ((OS.GetLayout(handle) & OS.LAYOUT_RTL) != 0) {
			flags |= OS.DI_NOMIRROR;
			/*
			* Bug in Windows.  For some reason, DrawIconEx() does not take
			* into account the window origin when the DI_NOMIRROR and
			* LAYOUT_RTL are set.  The fix is to set the window origin to
			* (0, 0) and offset the drawing ourselves.  
			*/
			POINT pt = new POINT();
			OS.GetWindowOrgEx(handle, pt);
			offsetX = pt.x;
			offsetY = pt.y;
		}
	} else {
		if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
			drawIcon = (OS.GetLayout(handle) & OS.LAYOUT_RTL) == 0;
		}
	}

	/* Simple case: no stretching, entire icon */
	if (simple && technology != OS.DT_RASPRINTER && drawIcon) {
		if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
		OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, srcImage.handle, 0, 0, 0, 0, flags);
		if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
		return;
	}

	/* Get the icon info */
	ICONINFO srcIconInfo = new ICONINFO();
	if (OS.IsWinCE) {
		Image.GetIconInfo(srcImage, srcIconInfo);
	} else {
		OS.GetIconInfo(srcImage.handle, srcIconInfo);
	}

	/* Get the icon width and height */
	long /*int*/ hBitmap = srcIconInfo.hbmColor;
	if (hBitmap == 0) hBitmap = srcIconInfo.hbmMask;
	BITMAP bm = new BITMAP();
	OS.GetObject(hBitmap, BITMAP.sizeof, bm);
	int iconWidth = bm.bmWidth, iconHeight = bm.bmHeight;
	if (hBitmap == srcIconInfo.hbmMask) iconHeight /= 2;
	
	if (simple) {
		srcWidth = destWidth = iconWidth;
		srcHeight = destHeight = iconHeight;
	}

	/* Draw the icon */
	boolean failed = srcX + srcWidth > iconWidth || srcY + srcHeight > iconHeight;
	if (!failed) {
		simple = srcX == 0 && srcY == 0 &&
			srcWidth == destWidth && srcHeight == destHeight &&
			srcWidth == iconWidth && srcHeight == iconHeight;
		if (!drawIcon) {
			drawBitmapMask(srcImage, srcIconInfo.hbmColor, srcIconInfo.hbmMask, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, iconWidth, iconHeight, false);
		} else if (simple && technology != OS.DT_RASPRINTER) {
			/* Simple case: no stretching, entire icon */
			if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
			OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, srcImage.handle, 0, 0, 0, 0, flags);
			if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
		} else {
 			/* Create the icon info and HDC's */
			ICONINFO newIconInfo = new ICONINFO();
			newIconInfo.fIcon = true;
			long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
			long /*int*/ dstHdc = OS.CreateCompatibleDC(handle);
						
			/* Blt the color bitmap */
			int srcColorY = srcY;
			long /*int*/ srcColor = srcIconInfo.hbmColor;
			if (srcColor == 0) {
				srcColor = srcIconInfo.hbmMask;
				srcColorY += iconHeight;
			}
			long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, srcColor);
			newIconInfo.hbmColor = OS.CreateCompatibleBitmap(srcHdc, destWidth, destHeight);
			if (newIconInfo.hbmColor == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			long /*int*/ oldDestBitmap = OS.SelectObject(dstHdc, newIconInfo.hbmColor);
			boolean stretch = !simple && (srcWidth != destWidth || srcHeight != destHeight);
			if (stretch) {
				if (!OS.IsWinCE) OS.SetStretchBltMode(dstHdc, OS.COLORONCOLOR);
				OS.StretchBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcColorY, srcWidth, srcHeight, OS.SRCCOPY);
			} else {
				OS.BitBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcColorY, OS.SRCCOPY);
			}
			
			/* Blt the mask bitmap */
			OS.SelectObject(srcHdc, srcIconInfo.hbmMask);
			newIconInfo.hbmMask = OS.CreateBitmap(destWidth, destHeight, 1, 1, null);
			if (newIconInfo.hbmMask == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			OS.SelectObject(dstHdc, newIconInfo.hbmMask);
			if (stretch) {
				OS.StretchBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCCOPY);
			} else {
				OS.BitBlt(dstHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
			}
			
			if (technology == OS.DT_RASPRINTER) {
				OS.SelectObject(srcHdc, newIconInfo.hbmColor);
				OS.SelectObject(dstHdc, newIconInfo.hbmMask);
				drawBitmapTransparentByClipping(srcHdc, dstHdc, 0, 0, destWidth, destHeight, destX, destY, destWidth, destHeight, true, destWidth, destHeight);	
				OS.SelectObject(srcHdc, oldSrcBitmap);
				OS.SelectObject(dstHdc, oldDestBitmap);
			} else {
				OS.SelectObject(srcHdc, oldSrcBitmap);
				OS.SelectObject(dstHdc, oldDestBitmap);
				long /*int*/ hIcon = OS.CreateIconIndirect(newIconInfo);
				if (hIcon == 0) SWT.error(SWT.ERROR_NO_HANDLES);
				if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, 0, 0, null);
				OS.DrawIconEx(handle, destX - offsetX, destY - offsetY, hIcon, destWidth, destHeight, 0, 0, flags);
				if (offsetX != 0 || offsetY != 0) OS.SetWindowOrgEx(handle, offsetX, offsetY, null);
				OS.DestroyIcon(hIcon);
			}
			
			/* Destroy the new icon src and mask and hdc's*/
			OS.DeleteObject(newIconInfo.hbmMask);
			OS.DeleteObject(newIconInfo.hbmColor);
			OS.DeleteDC(dstHdc);
			OS.DeleteDC(srcHdc);
		}
	}

	/* Free icon info */
	OS.DeleteObject(srcIconInfo.hbmMask);
	if (srcIconInfo.hbmColor != 0) {
		OS.DeleteObject(srcIconInfo.hbmColor);
	}
	
	if (failed) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
}

void drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
	BITMAP bm = new BITMAP();
	OS.GetObject(srcImage.handle, BITMAP.sizeof, bm);
	int imgWidth = bm.bmWidth;
	int imgHeight = bm.bmHeight;
	if (simple) {
		srcWidth = destWidth = imgWidth;
		srcHeight = destHeight = imgHeight;
	} else {
		if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) {
			SWT.error (SWT.ERROR_INVALID_ARGUMENT);
		}
		simple = srcX == 0 && srcY == 0 && 
			srcWidth == destWidth && destWidth == imgWidth &&
			srcHeight == destHeight && destHeight == imgHeight;
	}
	boolean mustRestore = false;
	GC memGC = srcImage.memGC;
	if (memGC != null && !memGC.isDisposed()) {
		memGC.flush();
		mustRestore = true;
		GCData data = memGC.data;
		if (data.hNullBitmap != 0) {
			OS.SelectObject(memGC.handle, data.hNullBitmap);
			data.hNullBitmap = 0;
		}
	}
	if (srcImage.alpha != -1 || srcImage.alphaData != null) {
		drawBitmapAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, bm, imgWidth, imgHeight);
	} else if (srcImage.transparentPixel != -1) {
		drawBitmapTransparent(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, bm, imgWidth, imgHeight);
	} else {
		drawBitmap(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, bm, imgWidth, imgHeight);
	}
	if (mustRestore) {
		long /*int*/ hOldBitmap = OS.SelectObject(memGC.handle, srcImage.handle);
		memGC.data.hNullBitmap = hOldBitmap;
	}
}

void drawBitmapAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight) {
	/* Simple cases */
	if (srcImage.alpha == 0) return;
	if (srcImage.alpha == 255) {
		drawBitmap(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, bm, imgWidth, imgHeight);
		return;
	}

	boolean alphaBlendSupport = OS.IsWinNT && OS.WIN32_VERSION >= OS.VERSION(4, 10);
	boolean isPrinter = OS.GetDeviceCaps(handle, OS.TECHNOLOGY) == OS.DT_RASPRINTER;
	if (alphaBlendSupport && isPrinter) {
		int caps = OS.GetDeviceCaps(handle, OS.SHADEBLENDCAPS);
		if (caps != 0) {
			if (srcImage.alpha != -1) {
				alphaBlendSupport = (caps & OS.SB_CONST_ALPHA) != 0;
			} else {
				alphaBlendSupport = (caps & OS.SB_PIXEL_ALPHA) != 0;
			}
		}
	}
	if (alphaBlendSupport) {
		BLENDFUNCTION blend = new BLENDFUNCTION();
		blend.BlendOp = OS.AC_SRC_OVER;
		long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
		long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, srcImage.handle);
		if (srcImage.alpha != -1) {
			blend.SourceConstantAlpha = (byte)srcImage.alpha;
			OS.AlphaBlend(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, blend);
		} else {
			long /*int*/ memDib = Image.createDIB(srcWidth, srcHeight, 32);
			if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			long /*int*/ memHdc = OS.CreateCompatibleDC(handle);
			long /*int*/ oldMemBitmap = OS.SelectObject(memHdc, memDib);
			BITMAP dibBM = new BITMAP();
			OS.GetObject(memDib, BITMAP.sizeof, dibBM);
			OS.BitBlt(memHdc, 0, 0, srcWidth, srcHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
			byte[] srcData = new byte[dibBM.bmWidthBytes * dibBM.bmHeight];
			OS.MoveMemory(srcData, dibBM.bmBits, srcData.length);
			final int apinc = imgWidth - srcWidth;
			int ap = srcY * imgWidth + srcX, sp = 0;
			byte[] alphaData = srcImage.alphaData;
			for (int y = 0; y < srcHeight; ++y) {
				for (int x = 0; x < srcWidth; ++x) {
					int alpha = alphaData[ap++] & 0xff;
					int r = ((srcData[sp + 0] & 0xFF) * alpha) + 128;
					r = (r + (r >> 8)) >> 8;
					int g = ((srcData[sp + 1] & 0xFF) * alpha) + 128;
					g = (g + (g >> 8)) >> 8;
					int b = ((srcData[sp + 2] & 0xFF) * alpha) + 128;
					b = (b + (b >> 8)) >> 8;								
					srcData[sp+0] = (byte)r;
					srcData[sp+1] = (byte)g;
					srcData[sp+2] = (byte)b;
					srcData[sp+3] = (byte)alpha;
					sp += 4;
				}
				ap += apinc;
			}
			OS.MoveMemory(dibBM.bmBits, srcData, srcData.length);
			blend.SourceConstantAlpha = (byte)0xff;
			blend.AlphaFormat = OS.AC_SRC_ALPHA;
			OS.AlphaBlend(handle, destX, destY, destWidth, destHeight, memHdc, 0, 0, srcWidth, srcHeight, blend);
			OS.SelectObject(memHdc, oldMemBitmap);
			OS.DeleteDC(memHdc);
			OS.DeleteObject(memDib);
		}
		OS.SelectObject(srcHdc, oldSrcBitmap);
		OS.DeleteDC(srcHdc);
		return;
	}

	/* Check clipping */
	Rectangle rect = getClipping();
	rect = rect.intersection(new Rectangle(destX, destY, destWidth, destHeight));
	if (rect.isEmpty()) return;

	/* 
	* Optimization.  Recalculate src and dest rectangles so that
	* only the clipping area is drawn.
	*/
	int sx1 = srcX + (((rect.x - destX) * srcWidth) / destWidth);
	int sx2 = srcX + ((((rect.x + rect.width) - destX) * srcWidth) / destWidth);
	int sy1 = srcY + (((rect.y - destY) * srcHeight) / destHeight);
	int sy2 = srcY + ((((rect.y + rect.height) - destY) * srcHeight) / destHeight);
	destX = rect.x;
	destY = rect.y;
	destWidth = rect.width;
	destHeight = rect.height;
	srcX = sx1;
	srcY = sy1;
	srcWidth = Math.max(1, sx2 - sx1);
	srcHeight = Math.max(1, sy2 - sy1);
	
	/* Create resources */
	long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, srcImage.handle);
	long /*int*/ memHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ memDib = Image.createDIB(Math.max(srcWidth, destWidth), Math.max(srcHeight, destHeight), 32);
	if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);
	long /*int*/ oldMemBitmap = OS.SelectObject(memHdc, memDib);

	BITMAP dibBM = new BITMAP();
	OS.GetObject(memDib, BITMAP.sizeof, dibBM);
	int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;

	/* Get the background pixels */
	OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, handle, destX, destY, OS.SRCCOPY);
	byte[] destData = new byte[sizeInBytes];
	OS.MoveMemory(destData, dibBM.bmBits, sizeInBytes);

 	/* Get the foreground pixels */
 	OS.BitBlt(memHdc, 0, 0, srcWidth, srcHeight, srcHdc, srcX, srcY, OS.SRCCOPY);
 	byte[] srcData = new byte[sizeInBytes];
	OS.MoveMemory(srcData, dibBM.bmBits, sizeInBytes);
	
	/* Merge the alpha channel in place */
	int alpha = srcImage.alpha;
	final boolean hasAlphaChannel = (srcImage.alpha == -1);
	if (hasAlphaChannel) {
		final int apinc = imgWidth - srcWidth;
		final int spinc = dibBM.bmWidthBytes - srcWidth * 4;
		int ap = srcY * imgWidth + srcX, sp = 3;
		byte[] alphaData = srcImage.alphaData;
		for (int y = 0; y < srcHeight; ++y) {
			for (int x = 0; x < srcWidth; ++x) {
				srcData[sp] = alphaData[ap++];
				sp += 4;
			}
			ap += apinc;
			sp += spinc;
		}
	}
	
	/* Scale the foreground pixels with alpha */
	OS.MoveMemory(dibBM.bmBits, srcData, sizeInBytes);
	/* 
	* Bug in WinCE and Win98.  StretchBlt does not correctly stretch when
	* the source and destination HDCs are the same.  The workaround is to
	* stretch to a temporary HDC and blit back into the original HDC.
	* Note that on WinCE StretchBlt correctly compresses the image when the
	* source and destination HDCs are the same.
	* 
	* Note that this also fails when drawing to a printer.
	*/
	if ((OS.IsWinCE && (destWidth > srcWidth || destHeight > srcHeight)) || (!OS.IsWinNT && !OS.IsWinCE) || isPrinter) {
		long /*int*/ tempHdc = OS.CreateCompatibleDC(handle);
		long /*int*/ tempDib = Image.createDIB(destWidth, destHeight, 32);
		if (tempDib == 0) SWT.error(SWT.ERROR_NO_HANDLES);		
		long /*int*/ oldTempBitmap = OS.SelectObject(tempHdc, tempDib);
		if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
			if (!OS.IsWinCE) OS.SetStretchBltMode(memHdc, OS.COLORONCOLOR);
			OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, srcWidth, srcHeight, OS.SRCCOPY);
		} else {
			OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);
		}
		OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, tempHdc, 0, 0, OS.SRCCOPY);
		OS.SelectObject(tempHdc, oldTempBitmap);
		OS.DeleteObject(tempDib);
		OS.DeleteDC(tempHdc);
	} else {
		if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
			if (!OS.IsWinCE) OS.SetStretchBltMode(memHdc, OS.COLORONCOLOR);
			OS.StretchBlt(memHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, srcWidth, srcHeight, OS.SRCCOPY);
		} else {
			OS.BitBlt(memHdc, 0, 0, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);
		}
	}
	OS.MoveMemory(srcData, dibBM.bmBits, sizeInBytes);
	
	/* Compose the pixels */
	final int dpinc = dibBM.bmWidthBytes - destWidth * 4;
	int dp = 0;
	for (int y = 0; y < destHeight; ++y) {
		for (int x = 0; x < destWidth; ++x) {
			if (hasAlphaChannel) alpha = srcData[dp + 3] & 0xff;
			destData[dp] += ((srcData[dp] & 0xff) - (destData[dp] & 0xff)) * alpha / 255;
			destData[dp + 1] += ((srcData[dp + 1] & 0xff) - (destData[dp + 1] & 0xff)) * alpha / 255;
			destData[dp + 2] += ((srcData[dp + 2] & 0xff) - (destData[dp + 2] & 0xff)) * alpha / 255;
			dp += 4;
		}
		dp += dpinc;
	}

	/* Draw the composed pixels */
	OS.MoveMemory(dibBM.bmBits, destData, sizeInBytes);
	OS.BitBlt(handle, destX, destY, destWidth, destHeight, memHdc, 0, 0, OS.SRCCOPY);

	/* Free resources */
	OS.SelectObject(memHdc, oldMemBitmap);
	OS.DeleteDC(memHdc);
	OS.DeleteObject(memDib);
	OS.SelectObject(srcHdc, oldSrcBitmap);
	OS.DeleteDC(srcHdc);
}

void drawBitmapTransparentByClipping(long /*int*/ srcHdc, long /*int*/ maskHdc, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight) {
	/* Create a clipping region from the mask */
	long /*int*/ rgn = OS.CreateRectRgn(0, 0, 0, 0);
	for (int y=0; y<imgHeight; y++) {
		for (int x=0; x<imgWidth; x++) {
			if (OS.GetPixel(maskHdc, x, y) == 0) {
				long /*int*/ tempRgn = OS.CreateRectRgn(x, y, x+1, y+1);
				OS.CombineRgn(rgn, rgn, tempRgn, OS.RGN_OR);
				OS.DeleteObject(tempRgn);
			}
		}
	}
	/* Stretch the clipping mask if needed */
	if (destWidth != srcWidth || destHeight != srcHeight) {
		int nBytes = OS.GetRegionData (rgn, 0, null);
		int[] lpRgnData = new int[nBytes / 4];
		OS.GetRegionData (rgn, nBytes, lpRgnData);
		float[] lpXform = new float[] {(float)destWidth/srcWidth, 0, 0, (float)destHeight/srcHeight, 0, 0};
		long /*int*/ tmpRgn = OS.ExtCreateRegion(lpXform, nBytes, lpRgnData);
		OS.DeleteObject(rgn);
		rgn = tmpRgn;
	}
	OS.OffsetRgn(rgn, destX, destY);
	long /*int*/ clip = OS.CreateRectRgn(0, 0, 0, 0);
	int result = OS.GetClipRgn(handle, clip);
	if (result == 1) OS.CombineRgn(rgn, rgn, clip, OS.RGN_AND);
	OS.SelectClipRgn(handle, rgn);
	int rop2 = 0;
	if (!OS.IsWinCE) {
		rop2 = OS.GetROP2(handle);
	} else {
		rop2 = OS.SetROP2 (handle, OS.R2_COPYPEN);
		OS.SetROP2 (handle, rop2);
	}
	int dwRop = rop2 == OS.R2_XORPEN ? OS.SRCINVERT : OS.SRCCOPY;
	if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
		int mode = 0;
		if (!OS.IsWinCE) mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
		OS.StretchBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, dwRop);
		if (!OS.IsWinCE) OS.SetStretchBltMode(handle, mode);
	} else {
		OS.BitBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, dwRop);
	}
	OS.SelectClipRgn(handle, result == 1 ? clip : 0);
	OS.DeleteObject(clip);
	OS.DeleteObject(rgn);
}

void drawBitmapMask(Image srcImage, long /*int*/ srcColor, long /*int*/ srcMask, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, boolean offscreen) {
	int srcColorY = srcY;
	if (srcColor == 0) {
		srcColor = srcMask;
		srcColorY += imgHeight;
	}
	long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, srcColor);
	long /*int*/ destHdc = handle;
	int x = destX, y = destY;
	long /*int*/ tempHdc = 0, tempBitmap = 0, oldTempBitmap = 0;
	int oldBkColor = 0, oldTextColor = 0;
	if (offscreen) {
		tempHdc = OS.CreateCompatibleDC(handle);
		tempBitmap = OS.CreateCompatibleBitmap(handle, destWidth, destHeight);
		oldTempBitmap = OS.SelectObject(tempHdc, tempBitmap);
		OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, handle, destX, destY, OS.SRCCOPY);
		destHdc = tempHdc;
		x = y = 0;
	} else {
		oldBkColor = OS.SetBkColor(handle, 0xFFFFFF);
		oldTextColor = OS.SetTextColor(handle, 0); 
	} 
	if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
		int mode = 0;
		if (!OS.IsWinCE) mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
		OS.StretchBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcColorY, srcWidth, srcHeight, OS.SRCINVERT);
		OS.SelectObject(srcHdc, srcMask);
		OS.StretchBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCAND);
		OS.SelectObject(srcHdc, srcColor);
		OS.StretchBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcColorY, srcWidth, srcHeight, OS.SRCINVERT);
		if (!OS.IsWinCE) OS.SetStretchBltMode(handle, mode);
	} else {
		OS.BitBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcColorY, OS.SRCINVERT);
		OS.SetTextColor(destHdc, 0);
		OS.SelectObject(srcHdc, srcMask);
		OS.BitBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCAND);
		OS.SelectObject(srcHdc, srcColor);
		OS.BitBlt(destHdc, x, y, destWidth, destHeight, srcHdc, srcX, srcColorY, OS.SRCINVERT);
	}
	if (offscreen) {
		OS.BitBlt(handle, destX, destY, destWidth, destHeight, tempHdc, 0, 0, OS.SRCCOPY);
		OS.SelectObject(tempHdc, oldTempBitmap);
		OS.DeleteDC(tempHdc);
		OS.DeleteObject(tempBitmap);
	} else {
		OS.SetBkColor(handle, oldBkColor);
		OS.SetTextColor(handle, oldTextColor);
	}
	OS.SelectObject(srcHdc, oldSrcBitmap);
	OS.DeleteDC(srcHdc);
}

void drawBitmapTransparent(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight) {
 		
	/* Find the RGB values for the transparent pixel. */
	boolean isDib = bm.bmBits != 0;
	long /*int*/ hBitmap = srcImage.handle;
	long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, hBitmap);
	byte[] originalColors = null;
	int transparentColor = srcImage.transparentColor;
	if (transparentColor == -1) {
		int transBlue = 0, transGreen = 0, transRed = 0;		
		boolean fixPalette = false;
		if (bm.bmBitsPixel <= 8) {
			if (isDib) {
				/* Palette-based DIBSECTION */
				if (OS.IsWinCE) {
					byte[] pBits = new byte[1];
					OS.MoveMemory(pBits, bm.bmBits, 1);
					byte oldValue = pBits[0];			
					int mask = (0xFF << (8 - bm.bmBitsPixel)) & 0x00FF;
					pBits[0] = (byte)((srcImage.transparentPixel << (8 - bm.bmBitsPixel)) | (pBits[0] & ~mask));
					OS.MoveMemory(bm.bmBits, pBits, 1);
					int color = OS.GetPixel(srcHdc, 0, 0);
	          		pBits[0] = oldValue;
	           		OS.MoveMemory(bm.bmBits, pBits, 1);				
					transBlue = (color & 0xFF0000) >> 16;
					transGreen = (color & 0xFF00) >> 8;
					transRed = color & 0xFF;				
				} else {
					int maxColors = 1 << bm.bmBitsPixel;
					byte[] oldColors = new byte[maxColors * 4];
					OS.GetDIBColorTable(srcHdc, 0, maxColors, oldColors);
					int offset = srcImage.transparentPixel * 4;		
					for (int i = 0; i < oldColors.length; i += 4) {
						if (i != offset) {
							if (oldColors[offset] == oldColors[i] && oldColors[offset+1] == oldColors[i+1] && oldColors[offset+2] == oldColors[i+2]) {
								fixPalette = true;
								break;
							}
						}
					}
					if (fixPalette) {
						byte[] newColors = new byte[oldColors.length];
						transRed = transGreen = transBlue = 0xff;
						newColors[offset] = (byte)transBlue;
						newColors[offset+1] = (byte)transGreen;
						newColors[offset+2] = (byte)transRed;
						OS.SetDIBColorTable(srcHdc, 0, maxColors, newColors);
						originalColors = oldColors;
					} else {
						transBlue = oldColors[offset] & 0xFF;
						transGreen = oldColors[offset+1] & 0xFF;
						transRed = oldColors[offset+2] & 0xFF;
					}
				}
			} else {
				/* Palette-based bitmap */
				int numColors = 1 << bm.bmBitsPixel;
				/* Set the few fields necessary to get the RGB data out */
				BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER();
				bmiHeader.biSize = BITMAPINFOHEADER.sizeof;
				bmiHeader.biPlanes = bm.bmPlanes;
				bmiHeader.biBitCount = bm.bmBitsPixel;
				byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4];
				OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof);
				if (OS.IsWinCE) SWT.error(SWT.ERROR_NOT_IMPLEMENTED);
				OS.GetDIBits(srcHdc, srcImage.handle, 0, 0, null, bmi, OS.DIB_RGB_COLORS);
				int offset = BITMAPINFOHEADER.sizeof + 4 * srcImage.transparentPixel;
				transRed = bmi[offset + 2] & 0xFF;
				transGreen = bmi[offset + 1] & 0xFF;
				transBlue = bmi[offset] & 0xFF;
			}
		} else {
			/* Direct color image */
			int pixel = srcImage.transparentPixel;
			switch (bm.bmBitsPixel) {
				case 16:
					transBlue = (pixel & 0x1F) << 3;
					transGreen = (pixel & 0x3E0) >> 2;
					transRed = (pixel & 0x7C00) >> 7;
					break;
				case 24:
					transBlue = (pixel & 0xFF0000) >> 16;
					transGreen = (pixel & 0xFF00) >> 8;
					transRed = pixel & 0xFF;
					break;
				case 32:
					transBlue = (pixel & 0xFF000000) >>> 24;
					transGreen = (pixel & 0xFF0000) >> 16;
					transRed = (pixel & 0xFF00) >> 8;
					break;
			}
		}
		transparentColor = transBlue << 16 | transGreen << 8 | transRed;
		if (!fixPalette) srcImage.transparentColor = transparentColor;
	}

	if (OS.IsWinCE) {
		/*
		* Note in WinCE. TransparentImage uses the first entry of a palette
		* based image when there are multiple entries that have the same
		* transparent color.
		*/
		OS.TransparentImage(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, transparentColor);
	} else if (originalColors == null && OS.IsWinNT && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
		int mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
		OS.TransparentBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, transparentColor);
		OS.SetStretchBltMode(handle, mode);
	} else {
		/* Create the mask for the source image */
		long /*int*/ maskHdc = OS.CreateCompatibleDC(handle);
		long /*int*/ maskBitmap = OS.CreateBitmap(imgWidth, imgHeight, 1, 1, null);
		long /*int*/ oldMaskBitmap = OS.SelectObject(maskHdc, maskBitmap);
		OS.SetBkColor(srcHdc, transparentColor);
		OS.BitBlt(maskHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY);
		if (originalColors != null) OS.SetDIBColorTable(srcHdc, 0, 1 << bm.bmBitsPixel, originalColors);
	
		if (OS.GetDeviceCaps(handle, OS.TECHNOLOGY) == OS.DT_RASPRINTER) {
			/* Most printers do not support BitBlt(), draw the source bitmap transparently using clipping */
			drawBitmapTransparentByClipping(srcHdc, maskHdc, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight);
		} else {
			/* Draw the source bitmap transparently using invert/and mask/invert */
			long /*int*/ tempHdc = OS.CreateCompatibleDC(handle);
			long /*int*/ tempBitmap = OS.CreateCompatibleBitmap(handle, destWidth, destHeight);	
			long /*int*/ oldTempBitmap = OS.SelectObject(tempHdc, tempBitmap);
			OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, handle, destX, destY, OS.SRCCOPY);
			if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
				if (!OS.IsWinCE) OS.SetStretchBltMode(tempHdc, OS.COLORONCOLOR);
				OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCINVERT);
				OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, maskHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCAND);
				OS.StretchBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, OS.SRCINVERT);
			} else {
				OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCINVERT);
				OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, maskHdc, srcX, srcY, OS.SRCAND);
				OS.BitBlt(tempHdc, 0, 0, destWidth, destHeight, srcHdc, srcX, srcY, OS.SRCINVERT);
			}
			OS.BitBlt(handle, destX, destY, destWidth, destHeight, tempHdc, 0, 0, OS.SRCCOPY);
			OS.SelectObject(tempHdc, oldTempBitmap);
			OS.DeleteDC(tempHdc);
			OS.DeleteObject(tempBitmap);
		}
		OS.SelectObject(maskHdc, oldMaskBitmap);
		OS.DeleteDC(maskHdc);
		OS.DeleteObject(maskBitmap);
	}
	OS.SelectObject(srcHdc, oldSrcBitmap);
	if (hBitmap != srcImage.handle) OS.DeleteObject(hBitmap);
	OS.DeleteDC(srcHdc);
}

void drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight) {
	long /*int*/ srcHdc = OS.CreateCompatibleDC(handle);
	long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, srcImage.handle);
	int rop2 = 0;
	if (!OS.IsWinCE) {
		rop2 = OS.GetROP2(handle);
	} else {
		rop2 = OS.SetROP2 (handle, OS.R2_COPYPEN);
		OS.SetROP2 (handle, rop2);
	}
	int dwRop = rop2 == OS.R2_XORPEN ? OS.SRCINVERT : OS.SRCCOPY;
	if (!simple && (srcWidth != destWidth || srcHeight != destHeight)) {
		int mode = 0;
		if (!OS.IsWinCE) mode = OS.SetStretchBltMode(handle, OS.COLORONCOLOR);
		OS.StretchBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, srcWidth, srcHeight, dwRop);
		if (!OS.IsWinCE) OS.SetStretchBltMode(handle, mode);
	} else {
		OS.BitBlt(handle, destX, destY, destWidth, destHeight, srcHdc, srcX, srcY, dwRop);
	}
	OS.SelectObject(srcHdc, oldSrcBitmap);
	OS.DeleteDC(srcHdc);
}

/** 
 * Draws a line, using the foreground color, between the points 
 * (<code>x1</code>, <code>y1</code>) and (<code>x2</code>, <code>y2</code>).
 *
 * @param x1 the first point's x coordinate
 * @param y1 the first point's y coordinate
 * @param x2 the second point's x coordinate
 * @param y2 the second point's y coordinate
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawLine (int x1, int y1, int x2, int y2) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		Gdip.Graphics_DrawLine(gdipGraphics, data.gdipPen, x1, y1, x2, y2);
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
			x1--;
			x2--;
		}
	}
	if (OS.IsWinCE) {
		int [] points = new int [] {x1, y1, x2, y2};
		OS.Polyline (handle, points, points.length / 2);
	} else {
		OS.MoveToEx (handle, x1, y1, 0);
		OS.LineTo (handle, x2, y2);
	}
	if (data.lineWidth <= 1) {
		OS.SetPixel (handle, x2, y2, data.foreground);
	}
}

/** 
 * Draws the outline of an oval, using the foreground color,
 * within the specified rectangular area.
 * <p>
 * The result is a circle or ellipse that fits within the 
 * rectangle specified by the <code>x</code>, <code>y</code>, 
 * <code>width</code>, and <code>height</code> arguments. 
 * </p><p> 
 * The oval covers an area that is <code>width + 1</code> 
 * pixels wide and <code>height + 1</code> pixels tall.
 * </p>
 *
 * @param x the x coordinate of the upper left corner of the oval to be drawn
 * @param y the y coordinate of the upper left corner of the oval to be drawn
 * @param width the width of the oval to be drawn
 * @param height the height of the oval to be drawn
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawOval (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		Gdip.Graphics_DrawEllipse(gdipGraphics, data.gdipPen, x, y, width, height);
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
	}
	OS.Ellipse(handle, x, y, x + width + 1, y + height + 1);
}

/** 
 * Draws the path described by the parameter.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param path the path to draw
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Path
 * 
 * @since 3.1
 */
public void drawPath (Path path) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	initGdip();
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
	Gdip.Graphics_DrawPath(gdipGraphics, data.gdipPen, path.handle);
	Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
}

/** 
 * Draws a pixel, using the foreground color, at the specified
 * point (<code>x</code>, <code>y</code>).
 * <p>
 * Note that the receiver's line attributes do not affect this
 * operation.
 * </p>
 *
 * @param x the point's x coordinate
 * @param y the point's y coordinate
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *  
 * @since 3.0
 */
public void drawPoint (int x, int y) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics != 0) {
		checkGC(DRAW);
		Gdip.Graphics_FillRectangle(data.gdipGraphics, getFgBrush(), x, y, 1, 1);
		return;
	}
	OS.SetPixel (handle, x, y, data.foreground);
}

/** 
 * Draws the closed polygon which is defined by the specified array
 * of integer coordinates, using the receiver's foreground color. The array 
 * contains alternating x and y values which are considered to represent
 * points which are the vertices of the polygon. Lines are drawn between
 * each consecutive pair, and between the first pair and last pair in the
 * array.
 *
 * @param pointArray an array of alternating x and y values which are the vertices of the polygon
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT if pointArray is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawPolygon(int[] pointArray) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		Gdip.Graphics_DrawPolygon(gdipGraphics, data.gdipPen, pointArray, pointArray.length / 2);
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
			for (int i = 0; i < pointArray.length; i+=2) {
				pointArray[i]--;
			}
		}
	}
	OS.Polygon(handle, pointArray, pointArray.length / 2);
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
			for (int i = 0; i < pointArray.length; i+=2) {
				pointArray[i]++;
			}
		}
	}
}

/** 
 * Draws the polyline which is defined by the specified array
 * of integer coordinates, using the receiver's foreground color. The array 
 * contains alternating x and y values which are considered to represent
 * points which are the corners of the polyline. Lines are drawn between
 * each consecutive pair, but not between the first pair and last pair in
 * the array.
 *
 * @param pointArray an array of alternating x and y values which are the corners of the polyline
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the point array is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawPolyline(int[] pointArray) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		Gdip.Graphics_DrawLines(gdipGraphics, data.gdipPen, pointArray, pointArray.length / 2);
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
			for (int i = 0; i < pointArray.length; i+=2) {
				pointArray[i]--;
			}
		}
	}
	OS.Polyline(handle, pointArray, pointArray.length / 2);
	int length = pointArray.length;
	if (length >= 2) {
		if (data.lineWidth <= 1) {
			OS.SetPixel (handle, pointArray[length - 2], pointArray[length - 1], data.foreground);
		}
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) {
			for (int i = 0; i < pointArray.length; i+=2) {
				pointArray[i]++;
			}
		}
	}
}

/** 
 * Draws the outline of the rectangle specified by the arguments,
 * using the receiver's foreground color. The left and right edges
 * of the rectangle are at <code>x</code> and <code>x + width</code>. 
 * The top and bottom edges are at <code>y</code> and <code>y + height</code>. 
 *
 * @param x the x coordinate of the rectangle to be drawn
 * @param y the y coordinate of the rectangle to be drawn
 * @param width the width of the rectangle to be drawn
 * @param height the height of the rectangle to be drawn
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawRectangle (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(DRAW);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		if (width < 0) {
			x = x + width;
			width = -width;
		}
		if (height < 0) {
			y = y + height;
			height = -height;
		}
		Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
		Gdip.Graphics_DrawRectangle(gdipGraphics, data.gdipPen, x, y, width, height);
		Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		/*
		* Note that Rectangle() subtracts one pixel in MIRRORED mode when
		* the pen was created with CreatePen() and its width is 0 or 1.    
		*/
		if (data.lineWidth > 1) {
			if ((data.lineWidth % 2) == 1) x++;
		} else {
			if (data.hPen != 0 && OS.GetObject(data.hPen, 0, 0) != LOGPEN.sizeof) {
				x++;
			}
		}
	}
	OS.Rectangle (handle, x, y, x + width + 1, y + height + 1);
}

/** 
 * Draws the outline of the specified rectangle, using the receiver's
 * foreground color. The left and right edges of the rectangle are at
 * <code>rect.x</code> and <code>rect.x + rect.width</code>. The top 
 * and bottom edges are at <code>rect.y</code> and 
 * <code>rect.y + rect.height</code>. 
 *
 * @param rect the rectangle to draw
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawRectangle (Rectangle rect) {
	if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	drawRectangle (rect.x, rect.y, rect.width, rect.height);
}

/** 
 * Draws the outline of the round-cornered rectangle specified by 
 * the arguments, using the receiver's foreground color. The left and
 * right edges of the rectangle are at <code>x</code> and <code>x + width</code>. 
 * The top and bottom edges are at <code>y</code> and <code>y + height</code>.
 * The <em>roundness</em> of the corners is specified by the 
 * <code>arcWidth</code> and <code>arcHeight</code> arguments, which
 * are respectively the width and height of the ellipse used to draw
 * the corners.
 *
 * @param x the x coordinate of the rectangle to be drawn
 * @param y the y coordinate of the rectangle to be drawn
 * @param width the width of the rectangle to be drawn
 * @param height the height of the rectangle to be drawn
 * @param arcWidth the width of the arc
 * @param arcHeight the height of the arc
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(DRAW);
	if (data.gdipGraphics != 0) {
		drawRoundRectangleGdip(data.gdipGraphics, data.gdipPen, x, y, width, height, arcWidth, arcHeight);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		if (data.lineWidth != 0 && data.lineWidth % 2 == 0) x--;
	}
	if (OS.IsWinCE) {
		/* 
		* Bug in WinCE PPC.  On certain devices, RoundRect does not draw
		* all the pixels.  The workaround is to draw a round rectangle
		* using lines and arcs.
		*/
		if (width == 0 || height == 0) return;									
		if (arcWidth == 0 || arcHeight == 0) {
			drawRectangle(x, y, width, height);
			return;
		}
		if (width < 0) {
			x += width;
			width = -width;
		}
		if (height < 0) {
			y += height;
			height = -height;
		}
		if (arcWidth < 0) arcWidth = -arcWidth;
		if (arcHeight < 0) arcHeight = -arcHeight;
		if (arcWidth > width) arcWidth = width;
		if (arcHeight > height) arcHeight = height;
				
		if (arcWidth < width) {
			drawLine(x+arcWidth/2, y, x+width-arcWidth/2, y);
			drawLine(x+arcWidth/2, y+height, x+width-arcWidth/2, y+height);
		}
		if (arcHeight < height) {
			drawLine(x, y+arcHeight/2, x, y+height-arcHeight/2);
			drawLine(x+width, y+arcHeight/2, x+width, y+height-arcHeight/2);
		}			
		if (arcWidth != 0 && arcHeight != 0) {
			drawArc(x, y, arcWidth, arcHeight, 90, 90);				
			drawArc(x+width-arcWidth, y, arcWidth, arcHeight, 0, 90);
			drawArc(x+width-arcWidth, y+height-arcHeight, arcWidth, arcHeight, 0, -90);
			drawArc(x, y+height-arcHeight, arcWidth, arcHeight, 180, 90);
		} 
	} else {
		OS.RoundRect(handle, x,y,x+width+1,y+height+1, arcWidth, arcHeight);
	}
}

void drawRoundRectangleGdip (long /*int*/ gdipGraphics, long /*int*/ pen, int x, int y, int width, int height, int arcWidth, int arcHeight) {
	int nx = x;
	int ny = y;
	int nw = width;
	int nh = height;
	int naw = arcWidth;
	int nah = arcHeight;
	
	if (nw < 0) {
		nw = 0 - nw;
		nx = nx - nw;
	}
	if (nh < 0) {
		nh = 0 - nh;
		ny = ny - nh;
	}
	if (naw < 0) 
		naw = 0 - naw;
	if (nah < 0)
		nah = 0 - nah;
	
	Gdip.Graphics_TranslateTransform(gdipGraphics, data.gdipXOffset, data.gdipYOffset, Gdip.MatrixOrderPrepend);
	if (naw == 0 || nah == 0) {
		Gdip.Graphics_DrawRectangle(gdipGraphics, data.gdipPen, x, y, width, height);
	} else {
		long /*int*/ path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
		if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		if (nw > naw) {
			if (nh > nah) {
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nah, 0, -90);
				Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nah, -90, -90);
				Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, naw, nah, -180, -90);
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny + nh - nah, naw, nah, -270, -90);
			} else {
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nh, -270, -180);
				Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nh, -90, -180);
			}
		} else {
			if (nh > nah) {
				Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nah, 0, -180);
				Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, nw, nah, -180, -180);
			} else {
				Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nh, 0, 360);
			}
		}
		Gdip.GraphicsPath_CloseFigure(path);
		Gdip.Graphics_DrawPath(gdipGraphics, pen, path);
		Gdip.GraphicsPath_delete(path);
	}
	Gdip.Graphics_TranslateTransform(gdipGraphics, -data.gdipXOffset, -data.gdipYOffset, Gdip.MatrixOrderPrepend);
}

/** 
 * Draws the given string, using the receiver's current font and
 * foreground color. No tab expansion or carriage return processing
 * will be performed. The background of the rectangular area where
 * the string is being drawn will be filled with the receiver's
 * background color.
 *
 * @param string the string to be drawn
 * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
 * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawString (String string, int x, int y) {
	drawString(string, x, y, false);
}

/** 
 * Draws the given string, using the receiver's current font and
 * foreground color. No tab expansion or carriage return processing
 * will be performed. If <code>isTransparent</code> is <code>true</code>,
 * then the background of the rectangular area where the string is being
 * drawn will not be modified, otherwise it will be filled with the
 * receiver's background color.
 *
 * @param string the string to be drawn
 * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn
 * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn
 * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawString (String string, int x, int y, boolean isTransparent) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
//	TCHAR buffer = new TCHAR (getCodePage(), string, false);
	int length = string.length();
	if (length == 0) return;
	char[] buffer = new char [length];
	string.getChars(0, length, buffer, 0);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		checkGC(FONT | FOREGROUND | (isTransparent ? 0 : BACKGROUND));
		drawText(gdipGraphics, string, x, y, isTransparent ? SWT.DRAW_TRANSPARENT : 0, null);
		return;
	}
	int rop2 = 0;
	if (OS.IsWinCE) {
		rop2 = OS.SetROP2(handle, OS.R2_COPYPEN);
		OS.SetROP2(handle, rop2);
	} else {
		rop2 = OS.GetROP2(handle);
	}
	checkGC(FONT | FOREGROUND_TEXT | BACKGROUND_TEXT);
	int oldBkMode = OS.SetBkMode(handle, isTransparent ? OS.TRANSPARENT : OS.OPAQUE);
	RECT rect = null;
	SIZE size = null;
	int flags = 0;
	if ((data.style & SWT.MIRRORED) != 0) {
		if (!isTransparent) {
			size = new SIZE();
			OS.GetTextExtentPoint32W(handle, buffer, length, size);
			rect = new RECT ();
			rect.left = x;
			rect.right = x + size.cx;
			rect.top = y;
			rect.bottom = y + size.cy;
			flags = OS.ETO_CLIPPED;
		}
		x--;
	}
	if (rop2 != OS.R2_XORPEN) {
		OS.ExtTextOutW(handle, x, y, flags, rect, buffer, length, null);
	} else {
		int foreground = OS.GetTextColor(handle);
		if (isTransparent) {
			if (size == null) {
				size = new SIZE();
				OS.GetTextExtentPoint32W(handle, buffer, length, size);
			}
			int width = size.cx, height = size.cy;
			long /*int*/ hBitmap = OS.CreateCompatibleBitmap(handle, width, height);
			if (hBitmap == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			long /*int*/ memDC = OS.CreateCompatibleDC(handle);
			long /*int*/ hOldBitmap = OS.SelectObject(memDC, hBitmap);
			OS.PatBlt(memDC, 0, 0, width, height, OS.BLACKNESS);
			OS.SetBkMode(memDC, OS.TRANSPARENT);
			OS.SetTextColor(memDC, foreground);
			OS.SelectObject(memDC, OS.GetCurrentObject(handle, OS.OBJ_FONT));
			OS.ExtTextOutW(memDC, 0, 0, 0, null, buffer, length, null);
			OS.BitBlt(handle, x, y, width, height, memDC, 0, 0, OS.SRCINVERT);
			OS.SelectObject(memDC, hOldBitmap);
			OS.DeleteDC(memDC);
			OS.DeleteObject(hBitmap);
		} else {
			int background = OS.GetBkColor(handle);
			OS.SetTextColor(handle, foreground ^ background);
			OS.ExtTextOutW(handle, x, y, flags, rect, buffer, length, null);
			OS.SetTextColor(handle, foreground);
		}
	}
	OS.SetBkMode(handle, oldBkMode);
}

/** 
 * Draws the given string, using the receiver's current font and
 * foreground color. Tab expansion and carriage return processing
 * are performed. The background of the rectangular area where
 * the text is being drawn will be filled with the receiver's
 * background color.
 *
 * @param string the string to be drawn
 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawText (String string, int x, int y) {
	drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
}

/** 
 * Draws the given string, using the receiver's current font and
 * foreground color. Tab expansion and carriage return processing
 * are performed. If <code>isTransparent</code> is <code>true</code>,
 * then the background of the rectangular area where the text is being
 * drawn will not be modified, otherwise it will be filled with the
 * receiver's background color.
 *
 * @param string the string to be drawn
 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
 * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawText (String string, int x, int y, boolean isTransparent) {
	int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB;
	if (isTransparent) flags |= SWT.DRAW_TRANSPARENT;
	drawText(string, x, y, flags);
}

/** 
 * Draws the given string, using the receiver's current font and
 * foreground color. Tab expansion, line delimiter and mnemonic
 * processing are performed according to the specified flags. If
 * <code>flags</code> includes <code>DRAW_TRANSPARENT</code>,
 * then the background of the rectangular area where the text is being
 * drawn will not be modified, otherwise it will be filled with the
 * receiver's background color.
 * <p>
 * The parameter <code>flags</code> may be a combination of:
 * <dl>
 * <dt><b>DRAW_DELIMITER</b></dt>
 * <dd>draw multiple lines</dd>
 * <dt><b>DRAW_TAB</b></dt>
 * <dd>expand tabs</dd>
 * <dt><b>DRAW_MNEMONIC</b></dt>
 * <dd>underline the mnemonic character</dd>
 * <dt><b>DRAW_TRANSPARENT</b></dt>
 * <dd>transparent background</dd>
 * </dl>
 * </p>
 *
 * @param string the string to be drawn
 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn
 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn
 * @param flags the flags specifying how to process the text
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void drawText (String string, int x, int y, int flags) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (string.length() == 0) return;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		checkGC(FONT | FOREGROUND | ((flags & SWT.DRAW_TRANSPARENT) != 0 ? 0 : BACKGROUND));
		drawText(gdipGraphics, string, x, y, flags, null);
		return;
	}
	TCHAR buffer = new TCHAR(getCodePage(), string, false);
	int length = buffer.length();
	if (length == 0) return;
	RECT rect = new RECT();
	/*
	* Feature in Windows.  For some reason DrawText(), the maximum
    * value for the bottom and right coordinates for the RECT that
    * is used to position the text is different on between Windows
    * versions.  If this value is larger than the maximum, nothing
	* is drawn.  On Windows 98, the limit is 0x7FFF.  On Windows CE,
	* NT, and 2000 it is 0x6FFFFFF. And on XP, it is 0x7FFFFFFF.
	* The fix is to use the the smaller limit for Windows 98 and the
	* larger limit on the other Windows platforms. 
	*/
	int limit = OS.IsWin95 ? 0x7FFF : 0x6FFFFFF;
	OS.SetRect(rect, x, y, limit, limit);
	int uFormat = OS.DT_LEFT;
	if ((flags & SWT.DRAW_DELIMITER) == 0) uFormat |= OS.DT_SINGLELINE;
	if ((flags & SWT.DRAW_TAB) != 0) uFormat |= OS.DT_EXPANDTABS;
	if ((flags & SWT.DRAW_MNEMONIC) == 0) uFormat |= OS.DT_NOPREFIX;
	if ((flags & SWT.DRAW_MNEMONIC) != 0 && (data.uiState & OS.UISF_HIDEACCEL) != 0) {
		uFormat |= OS.DT_HIDEPREFIX;
	}
	int rop2 = 0;
	if (OS.IsWinCE) {
		rop2 = OS.SetROP2(handle, OS.R2_COPYPEN);
		OS.SetROP2(handle, rop2);
	} else {
		rop2 = OS.GetROP2(handle);
	}
	checkGC(FONT | FOREGROUND_TEXT | BACKGROUND_TEXT);
	int oldBkMode = OS.SetBkMode(handle, (flags & SWT.DRAW_TRANSPARENT) != 0 ? OS.TRANSPARENT : OS.OPAQUE);
	if (rop2 != OS.R2_XORPEN) {
		OS.DrawText(handle, buffer, length, rect, uFormat);
	} else {
		int foreground = OS.GetTextColor(handle);
		if ((flags & SWT.DRAW_TRANSPARENT) != 0) {
			OS.DrawText(handle, buffer, buffer.length(), rect, uFormat | OS.DT_CALCRECT);
			int width = rect.right - rect.left;
			int height = rect.bottom - rect.top;
			long /*int*/ hBitmap = OS.CreateCompatibleBitmap(handle, width, height);
			if (hBitmap == 0) SWT.error(SWT.ERROR_NO_HANDLES);
			long /*int*/ memDC = OS.CreateCompatibleDC(handle);
			long /*int*/ hOldBitmap = OS.SelectObject(memDC, hBitmap);
			OS.PatBlt(memDC, 0, 0, width, height, OS.BLACKNESS);
			OS.SetBkMode(memDC, OS.TRANSPARENT);
			OS.SetTextColor(memDC, foreground);
			OS.SelectObject(memDC, OS.GetCurrentObject(handle, OS.OBJ_FONT));
			OS.SetRect(rect, 0, 0, 0x7FFF, 0x7FFF);
			OS.DrawText(memDC, buffer, length, rect, uFormat);
			OS.BitBlt(handle, x, y, width, height, memDC, 0, 0, OS.SRCINVERT);
			OS.SelectObject(memDC, hOldBitmap);
			OS.DeleteDC(memDC);
			OS.DeleteObject(hBitmap);
		} else {
			int background = OS.GetBkColor(handle);
			OS.SetTextColor(handle, foreground ^ background);
			OS.DrawText(handle, buffer, length, rect, uFormat);
			OS.SetTextColor(handle, foreground);
		}
	}
	OS.SetBkMode(handle, oldBkMode);
}

boolean useGDIP (long /*int*/ hdc, char[] buffer) {
	if (OS.IsWinCE || !OS.IsUnicode) return false;
	short[] glyphs = new short[buffer.length];
	OS.GetGlyphIndicesW(hdc, buffer, buffer.length, glyphs, OS.GGI_MARK_NONEXISTING_GLYPHS);
	for (int i = 0; i < glyphs.length; i++) {
		if (glyphs [i] == -1) {
			switch (buffer[i]) {
				case '\t':
				case '\n':
				case '\r':
					break;
				default:
					return true;
			}
		}
	}
	return false;
}

void drawText(long /*int*/ gdipGraphics, String string, int x, int y, int flags, Point size) {
	int length = string.length();
	char[] chars = new char [length];
	string.getChars(0, length, chars, 0);
	long /*int*/ hdc = Gdip.Graphics_GetHDC(gdipGraphics);
	long /*int*/ hFont = data.hGDIFont;
	if (hFont == 0 && data.font != null) hFont = data.font.handle;
	long /*int*/ oldFont = 0;
	if (hFont != 0) oldFont = OS.SelectObject(hdc, hFont);
	TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA();
	OS.GetTextMetrics(hdc, lptm);
	boolean gdip = useGDIP(hdc, chars);
	if (hFont != 0) OS.SelectObject(hdc, oldFont);
	Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
	if (gdip) {
		drawTextGDIP(gdipGraphics, string, x, y, flags, size == null, size);
		return;
	}
	int i = 0, start = 0, end = 0, drawX = x, drawY = y, width = 0, mnemonicIndex = -1;
	if ((flags & (SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC)) != 0) {
		int tabWidth = lptm.tmAveCharWidth * 8;
		while (i < length) {
			char c = chars [end++] = chars [i++];
			switch (c) {
				case '\t':
					if ((flags & SWT.DRAW_TAB) != 0) {
						int l = end - start - 1;
						RectF bounds = drawText(gdipGraphics, chars, start, l, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
						drawX += Math.ceil(bounds.Width);
						drawX = x + (((drawX - x) / tabWidth) + 1) * tabWidth;
						mnemonicIndex = -1;
						start = end;
					}
					break;
				case '&':
					if ((flags & SWT.DRAW_MNEMONIC) != 0) {
						if (i == length) {end--; continue;}
						if (chars [i] == '&') {i++; continue;}
						end--;
						mnemonicIndex = end - start;
					}
					break;
				case '\r':
				case '\n':
					if ((flags & SWT.DRAW_DELIMITER) != 0) {
						int l = end - start - 1;
						if (c == '\r' && end != length && chars[end] == '\n') {
							end++;
							i++;
						}
						RectF bounds = drawText(gdipGraphics, chars, start, l, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
						drawY += Math.ceil(bounds.Height);
						width = Math.max(width, drawX + (int)Math.ceil(bounds.Width));
						drawX = x;
						mnemonicIndex = -1;
						start = end;
					}
					break;
			}
		}
		length = end;
	}
	RectF bounds = drawText(gdipGraphics, chars, start, length - start, drawX, drawY, flags, mnemonicIndex, lptm, size == null);
	if (size != null) {
		drawY += Math.ceil(bounds.Height);
		width = Math.max(width, drawX + (int)Math.ceil(bounds.Width));
		size.x = width;
		size.y = drawY;
	}
}

RectF drawText(long /*int*/ gdipGraphics, char[] buffer, int start, int length, int x, int y, int flags, int mnemonicIndex, TEXTMETRIC lptm, boolean draw) {
	boolean drawMnemonic = draw && mnemonicIndex != -1 && (data.uiState & OS.UISF_HIDEACCEL) == 0;
	boolean needsBounds = !draw || drawMnemonic || (flags & SWT.DRAW_TRANSPARENT) == 0 || (data.style & SWT.MIRRORED) != 0 || (flags & SWT.DRAW_DELIMITER) != 0;
	if (length <= 0) {
		RectF bounds = null;
		if (needsBounds) {
			bounds = new RectF();
			bounds.Height = lptm.tmHeight;
		}
		return bounds;
	}
	int nGlyphs = (length * 3 / 2) + 16;
	GCP_RESULTS result = new GCP_RESULTS();
	result.lStructSize = GCP_RESULTS.sizeof;
	result.nGlyphs = nGlyphs;
	long /*int*/ hHeap = OS.GetProcessHeap();
	long /*int*/ lpDx = result.lpDx = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 4);
	long /*int*/ lpGlyphs = result.lpGlyphs = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 2);
	long /*int*/ lpOrder = 0;
	int dwFlags = OS.GCP_GLYPHSHAPE | OS.GCP_REORDER | OS.GCP_LIGATE;
	if (drawMnemonic) {
		lpOrder = result.lpOrder = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, nGlyphs * 4);
	}
	long /*int*/ hdc = Gdip.Graphics_GetHDC(gdipGraphics);
	long /*int*/ hFont = data.hGDIFont;
	if (hFont == 0 && data.font != null) hFont = data.font.handle;
	long /*int*/ oldFont = 0;
	if (hFont != 0) oldFont = OS.SelectObject(hdc, hFont);
	if (start != 0) {
		char[] temp = new char[length];
		System.arraycopy(buffer, start, temp, 0, length);
		buffer = temp;
	}
	if ((data.style & SWT.MIRRORED) != 0) OS.SetLayout(hdc, OS.GetLayout(hdc) | OS.LAYOUT_RTL);
	OS.GetCharacterPlacementW(hdc, buffer, length, 0, result, dwFlags);
	if ((data.style & SWT.MIRRORED) != 0) OS.SetLayout(hdc, OS.GetLayout(hdc) & ~OS.LAYOUT_RTL);
	if (hFont != 0) OS.SelectObject(hdc, oldFont);
	Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
	nGlyphs = result.nGlyphs;
	int drawX = x, drawY = y + lptm.tmAscent;
	int[] dx = new int[nGlyphs];
	OS.MoveMemory(dx, result.lpDx, nGlyphs * 4);
	float[] points = new float[dx.length * 2];
	for (int i = 0, j = 0; i < dx.length; i++) {
		points[j++] = drawX;
		points[j++] = drawY;
		drawX += dx[i];
	}
	RectF bounds = null;
	if (needsBounds) {
		bounds = new RectF();
		Gdip.Graphics_MeasureDriverString(gdipGraphics, lpGlyphs, nGlyphs, data.gdipFont, points, 0, 0, bounds);
	}
	if (draw) {
		if ((flags & SWT.DRAW_TRANSPARENT) == 0) {
			Gdip.Graphics_FillRectangle(gdipGraphics, data.gdipBrush, x, y, (int)Math.ceil(bounds.Width), (int)Math.ceil(bounds.Height));
		}
		int gstate = 0;
		long /*int*/ brush = getFgBrush();
		if ((data.style & SWT.MIRRORED) != 0) {
			switch (Gdip.Brush_GetType(brush)) {
				case Gdip.BrushTypeLinearGradient:
					Gdip.LinearGradientBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
					Gdip.LinearGradientBrush_TranslateTransform(brush, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);	
					break;			
				case Gdip.BrushTypeTextureFill:
					Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
					Gdip.TextureBrush_TranslateTransform(brush, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);	
					break;			
			}
			gstate = Gdip.Graphics_Save(gdipGraphics);
			Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
			Gdip.Graphics_TranslateTransform(gdipGraphics, - 2 * x - bounds.Width, 0, Gdip.MatrixOrderPrepend);		 		 		 
		}
		Gdip.Graphics_DrawDriverString(gdipGraphics, lpGlyphs, result.nGlyphs, data.gdipFont, brush, points, 0, 0);
		if ((data.style & SWT.MIRRORED) != 0) {
			switch (Gdip.Brush_GetType(brush)) {
				case Gdip.BrushTypeLinearGradient:
					Gdip.LinearGradientBrush_ResetTransform(brush);
					break;
				case Gdip.BrushTypeTextureFill:
					Gdip.TextureBrush_ResetTransform(brush);
					break;
			}
			Gdip.Graphics_Restore(gdipGraphics, gstate);
		}
		if (drawMnemonic) {
			long /*int*/ pen = Gdip.Pen_new(brush, 1);
			if (pen != 0) {
				int[] order = new int[1];
				OS.MoveMemory(order, result.lpOrder + mnemonicIndex * 4, 4);
				int mnemonicLeft, mnemonicRight;
				if ((data.style & SWT.MIRRORED) != 0) {
					mnemonicLeft = (int)Math.ceil(bounds.Width) - (int)points[order[0] * 2] + 2 * x;
					mnemonicRight = mnemonicLeft - dx[order[0]];
				} else {
					mnemonicLeft = (int)points[order[0] * 2];
					mnemonicRight = mnemonicLeft + dx[order[0]];
				}
				int mnemonicY = y + lptm.tmAscent + 2;
				int smoothingMode = Gdip.Graphics_GetSmoothingMode(gdipGraphics);
				Gdip.Graphics_SetSmoothingMode(gdipGraphics, Gdip.SmoothingModeNone);
				Gdip.Graphics_DrawLine(gdipGraphics, pen, mnemonicLeft, mnemonicY, mnemonicRight, mnemonicY);
				Gdip.Graphics_SetSmoothingMode(gdipGraphics, smoothingMode);
				Gdip.Pen_delete(pen);
			}
		}
	}
	if (lpOrder != 0) OS.HeapFree(hHeap, 0, lpOrder);
	OS.HeapFree(hHeap, 0, lpGlyphs);
	OS.HeapFree(hHeap, 0, lpDx);
	return bounds;
}

void drawTextGDIP(long /*int*/ gdipGraphics, String string, int x, int y, int flags, boolean draw, Point size) {
	boolean needsBounds = !draw || (flags & SWT.DRAW_TRANSPARENT) == 0;
	char[] buffer;
	int length = string.length();
	if (length != 0) {
		buffer = new char [length];
		string.getChars(0, length, buffer, 0);
	} else {
		if (draw) return;
		buffer = new char[]{' '};
	}
	PointF pt = new PointF();
	long /*int*/ format = Gdip.StringFormat_Clone(Gdip.StringFormat_GenericTypographic());
	int formatFlags = Gdip.StringFormat_GetFormatFlags(format) | Gdip.StringFormatFlagsMeasureTrailingSpaces;
	if ((data.style & SWT.MIRRORED) != 0) formatFlags |= Gdip.StringFormatFlagsDirectionRightToLeft;
	Gdip.StringFormat_SetFormatFlags(format, formatFlags);
	float[] tabs = (flags & SWT.DRAW_TAB) != 0 ? new float[]{measureSpace(data.gdipFont, format) * 8} : new float[1];
	Gdip.StringFormat_SetTabStops(format, 0, tabs.length, tabs); 
	int hotkeyPrefix = (flags & SWT.DRAW_MNEMONIC) != 0 ? Gdip.HotkeyPrefixShow : Gdip.HotkeyPrefixNone;
	if ((flags & SWT.DRAW_MNEMONIC) != 0 && (data.uiState & OS.UISF_HIDEACCEL) != 0) hotkeyPrefix = Gdip.HotkeyPrefixHide;
	Gdip.StringFormat_SetHotkeyPrefix(format, hotkeyPrefix);
	RectF bounds = null;
	if (needsBounds) {
		bounds = new RectF();
		Gdip.Graphics_MeasureString(gdipGraphics, buffer, buffer.length, data.gdipFont, pt, format, bounds);
	}
	if (draw) {
		if ((flags & SWT.DRAW_TRANSPARENT) == 0) {
			Gdip.Graphics_FillRectangle(gdipGraphics, data.gdipBrush, x, y, (int)Math.ceil(bounds.Width), (int)Math.ceil(bounds.Height));
		}
		int gstate = 0;
		long /*int*/ brush = getFgBrush();
		if ((data.style & SWT.MIRRORED) != 0) {
			switch (Gdip.Brush_GetType(brush)) {
				case Gdip.BrushTypeLinearGradient:
					Gdip.LinearGradientBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
					Gdip.LinearGradientBrush_TranslateTransform(brush, - 2 * x, 0, Gdip.MatrixOrderPrepend);	
					break;			
				case Gdip.BrushTypeTextureFill:
					Gdip.TextureBrush_ScaleTransform(brush, -1, 1, Gdip.MatrixOrderPrepend);
					Gdip.TextureBrush_TranslateTransform(brush, - 2 * x, 0, Gdip.MatrixOrderPrepend);	
					break;			
			}
			gstate = Gdip.Graphics_Save(gdipGraphics);
			Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend);
			Gdip.Graphics_TranslateTransform(gdipGraphics, - 2 * x, 0, Gdip.MatrixOrderPrepend);		 		 		 
		}
		pt.X = x;
		pt.Y = y;
		Gdip.Graphics_DrawString(gdipGraphics, buffer, buffer.length, data.gdipFont, pt, format, brush);
		if ((data.style & SWT.MIRRORED) != 0) {
			switch (Gdip.Brush_GetType(brush)) {
				case Gdip.BrushTypeLinearGradient:
					Gdip.LinearGradientBrush_ResetTransform(brush);
					break;
				case Gdip.BrushTypeTextureFill:
					Gdip.TextureBrush_ResetTransform(brush);
					break;
			}
			Gdip.Graphics_Restore(gdipGraphics, gstate);
		}
	}
	Gdip.StringFormat_delete(format);
	if (length == 0) bounds.Width = 0;
	if (size != null) {
		size.x = (int)Math.ceil(bounds.Width);
		size.y = (int)Math.ceil(bounds.Height);
	}
}

/**
 * Compares the argument to the receiver, and returns true
 * if they represent the <em>same</em> object using a class
 * specific comparison.
 *
 * @param object the object to compare with this object
 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
 *
 * @see #hashCode
 */
@Override
public boolean equals (Object object) {
	return (object == this) || ((object instanceof GC) && (handle == ((GC)object).handle));
}

/**
 * Fills the interior of a circular or elliptical arc within
 * the specified rectangular area, with the receiver's background
 * color.
 * <p>
 * The resulting arc begins at <code>startAngle</code> and extends  
 * for <code>arcAngle</code> degrees, using the current color.
 * Angles are interpreted such that 0 degrees is at the 3 o'clock
 * position. A positive value indicates a counter-clockwise rotation
 * while a negative value indicates a clockwise rotation.
 * </p><p>
 * The center of the arc is the center of the rectangle whose origin 
 * is (<code>x</code>, <code>y</code>) and whose size is specified by the 
 * <code>width</code> and <code>height</code> arguments. 
 * </p><p>
 * The resulting arc covers an area <code>width + 1</code> pixels wide
 * by <code>height + 1</code> pixels tall.
 * </p>
 *
 * @param x the x coordinate of the upper-left corner of the arc to be filled
 * @param y the y coordinate of the upper-left corner of the arc to be filled
 * @param width the width of the arc to be filled
 * @param height the height of the arc to be filled
 * @param startAngle the beginning angle
 * @param arcAngle the angular extent of the arc, relative to the start angle
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawArc
 */
public void fillArc (int x, int y, int width, int height, int startAngle, int arcAngle) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FILL);
	if (width < 0) {
		x = x + width;
		width = -width;
	}
	if (height < 0) {
		y = y + height;
		height = -height;
	}
	if (width == 0 || height == 0 || arcAngle == 0) return;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		if (width == height) {
			Gdip.Graphics_FillPie(gdipGraphics, data.gdipBrush, x, y, width, height, -startAngle, -arcAngle);
		} else {
			int state = Gdip.Graphics_Save(gdipGraphics);
			Gdip.Graphics_TranslateTransform(gdipGraphics, x, y, Gdip.MatrixOrderPrepend);
			Gdip.Graphics_ScaleTransform(gdipGraphics, width, height, Gdip.MatrixOrderPrepend);
			Gdip.Graphics_FillPie(gdipGraphics, data.gdipBrush, 0, 0, 1, 1, -startAngle, -arcAngle);
			Gdip.Graphics_Restore(gdipGraphics, state);
		}
		return;
	}
	
	if ((data.style & SWT.MIRRORED) != 0) x--;
	/*
	* Feature in WinCE.  The function Pie is not present in the
	* WinCE SDK.  The fix is to emulate it by using Polygon.
	*/
	if (OS.IsWinCE) {
		/* compute arc with a simple linear interpolation */
		if (arcAngle < 0) {
			startAngle += arcAngle;
			arcAngle = -arcAngle;
		}
		boolean drawSegments = true;
		if (arcAngle >= 360) {
			arcAngle = 360;
			drawSegments = false;
		}
		int[] points = new int[(arcAngle + 1) * 2 + (drawSegments ? 4 : 0)];		
		int cteX = 2 * x + width;
		int cteY = 2 * y + height;
		int index = (drawSegments ? 2 : 0);
		for (int i = 0; i <= arcAngle; i++) {
			points[index++] = (Compatibility.cos(startAngle + i, width) + cteX) >> 1;
			points[index++] = (cteY - Compatibility.sin(startAngle + i, height)) >> 1;
		} 
		if (drawSegments) {
			points[0] = points[points.length - 2] = cteX >> 1;
			points[1] = points[points.length - 1] = cteY >> 1;
		}
		OS.Polygon(handle, points, points.length / 2);
	} else {
	 	int x1, y1, x2, y2,tmp;
		boolean isNegative;
		if (arcAngle >= 360 || arcAngle <= -360) {
			x1 = x2 = x + width;
			y1 = y2 = y + height / 2;
		} else {
			isNegative = arcAngle < 0;
	
			arcAngle = arcAngle + startAngle;
			if (isNegative) {
				// swap angles
			   	tmp = startAngle;
				startAngle = arcAngle;
				arcAngle = tmp;
			}
			x1 = Compatibility.cos(startAngle, width) + x + width/2;
			y1 = -1 * Compatibility.sin(startAngle, height) + y + height/2;
			
			x2 = Compatibility.cos(arcAngle, width) + x + width/2;
			y2 = -1 * Compatibility.sin(arcAngle, height) + y + height/2; 				
		}
		OS.Pie(handle, x, y, x + width + 1, y + height + 1, x1, y1, x2, y2);
	}
}

/**
 * Fills the interior of the specified rectangle with a gradient
 * sweeping from left to right or top to bottom progressing
 * from the receiver's foreground color to its background color.
 *
 * @param x the x coordinate of the rectangle to be filled
 * @param y the y coordinate of the rectangle to be filled
 * @param width the width of the rectangle to be filled, may be negative
 *        (inverts direction of gradient if horizontal)
 * @param height the height of the rectangle to be filled, may be negative
 *        (inverts direction of gradient if vertical)
 * @param vertical if true sweeps from top to bottom, else 
 *        sweeps from left to right
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawRectangle(int, int, int, int)
 */
public void fillGradientRectangle(int x, int y, int width, int height, boolean vertical) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (width == 0 || height == 0) return;

	RGB backgroundRGB, foregroundRGB;
	backgroundRGB = getBackground().getRGB();
	foregroundRGB = getForeground().getRGB();

	RGB fromRGB, toRGB;
	fromRGB = foregroundRGB;
	toRGB   = backgroundRGB;

	boolean swapColors = false;
	if (width < 0) {
		x += width; width = -width;
		if (! vertical) swapColors = true;
	}
	if (height < 0) {
		y += height; height = -height;
		if (vertical) swapColors = true;
	}
	if (swapColors) {
		fromRGB = backgroundRGB;
		toRGB   = foregroundRGB;
	}
	if (fromRGB.equals(toRGB)) {
		fillRectangle(x, y, width, height);
		return;
	}
	if (data.gdipGraphics != 0) {
		initGdip();
		PointF p1= new PointF(), p2 = new PointF();
		p1.X = x;
		p1.Y = y;
		if (vertical) {
			p2.X = p1.X;
			p2.Y = p1.Y + height;
		} else {
			p2.X = p1.X + width;
			p2.Y = p1.Y;
		}
		int rgb = ((fromRGB.red & 0xFF) << 16) | ((fromRGB.green & 0xFF) << 8) | (fromRGB.blue & 0xFF);
		long /*int*/ fromGpColor = Gdip.Color_new(data.alpha << 24 | rgb);
		if (fromGpColor == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		rgb = ((toRGB.red & 0xFF) << 16) | ((toRGB.green & 0xFF) << 8) | (toRGB.blue & 0xFF);
		long /*int*/ toGpColor = Gdip.Color_new(data.alpha << 24 | rgb);
		if (toGpColor == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		long /*int*/ brush = Gdip.LinearGradientBrush_new(p1, p2, fromGpColor, toGpColor);
		Gdip.Graphics_FillRectangle(data.gdipGraphics, brush, x, y, width, height);
		Gdip.LinearGradientBrush_delete(brush);
		Gdip.Color_delete(fromGpColor);
		Gdip.Color_delete(toGpColor);
		return;
	}
	/* Use GradientFill if supported, only on Windows 98, 2000 and newer. */
	/* 
	* Bug in Windows: On Windows 2000 when the device is a printer,
	* GradientFill swaps red and blue color components, causing the
	* gradient to be printed in the wrong color. On Windows 98 when
	* the device is a printer, GradientFill does not fill completely
	* to the right edge of the rectangle. The fix is not to use
	* GradientFill for printer devices.
	*/
	int rop2 = 0;
	if (OS.IsWinCE) {
		rop2 = OS.SetROP2(handle, OS.R2_COPYPEN);
		OS.SetROP2(handle, rop2);
	} else {
		rop2 = OS.GetROP2(handle);
	}
	if (OS.IsWinNT && rop2 != OS.R2_XORPEN && OS.GetDeviceCaps(handle, OS.TECHNOLOGY) != OS.DT_RASPRINTER) {
		final long /*int*/ hHeap = OS.GetProcessHeap();
		final long /*int*/ pMesh = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, GRADIENT_RECT.sizeof + TRIVERTEX.sizeof * 2);
		if (pMesh == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		final long /*int*/ pVertex = pMesh + GRADIENT_RECT.sizeof;
	
		GRADIENT_RECT gradientRect = new GRADIENT_RECT();
		gradientRect.UpperLeft = 0;
		gradientRect.LowerRight = 1;
		OS.MoveMemory(pMesh, gradientRect, GRADIENT_RECT.sizeof);
	
		TRIVERTEX trivertex = new TRIVERTEX();
		trivertex.x = x;
		trivertex.y = y;
		trivertex.Red = (short)((fromRGB.red << 8) | fromRGB.red);
		trivertex.Green = (short)((fromRGB.green << 8) | fromRGB.green);
		trivertex.Blue = (short)((fromRGB.blue << 8) | fromRGB.blue);
		trivertex.Alpha = -1;
		OS.MoveMemory(pVertex, trivertex, TRIVERTEX.sizeof);
		
		trivertex.x = x + width;
		trivertex.y = y + height;
		trivertex.Red = (short)((toRGB.red << 8) | toRGB.red);
		trivertex.Green = (short)((toRGB.green << 8) | toRGB.green);
		trivertex.Blue = (short)((toRGB.blue << 8) | toRGB.blue);
		trivertex.Alpha = -1;
		OS.MoveMemory(pVertex + TRIVERTEX.sizeof, trivertex, TRIVERTEX.sizeof);
	
		boolean success = OS.GradientFill(handle, pVertex, 2, pMesh, 1, vertical ? OS.GRADIENT_FILL_RECT_V : OS.GRADIENT_FILL_RECT_H);
		OS.HeapFree(hHeap, 0, pMesh);
		if (success) return;
	}
	
	final int depth = OS.GetDeviceCaps(handle, OS.BITSPIXEL);
	final int bitResolution = (depth >= 24) ? 8 : (depth >= 15) ? 5 : 0;
	ImageData.fillGradientRectangle(this, data.device,
		x, y, width, height, vertical, fromRGB, toRGB,
		bitResolution, bitResolution, bitResolution);
}

/** 
 * Fills the interior of an oval, within the specified
 * rectangular area, with the receiver's background
 * color.
 *
 * @param x the x coordinate of the upper left corner of the oval to be filled
 * @param y the y coordinate of the upper left corner of the oval to be filled
 * @param width the width of the oval to be filled
 * @param height the height of the oval to be filled
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawOval
 */
public void fillOval (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FILL);
	if (data.gdipGraphics != 0) {
		Gdip.Graphics_FillEllipse(data.gdipGraphics, data.gdipBrush, x, y, width, height);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) x--;
	OS.Ellipse(handle, x, y, x + width + 1, y + height + 1);
}

/** 
 * Fills the path described by the parameter.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 *
 * @param path the path to fill
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Path
 * 
 * @since 3.1
 */
public void fillPath (Path path) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	initGdip();
	checkGC(FILL);
	int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
	Gdip.GraphicsPath_SetFillMode(path.handle, mode);
	Gdip.Graphics_FillPath(data.gdipGraphics, data.gdipBrush, path.handle);
}

/** 
 * Fills the interior of the closed polygon which is defined by the
 * specified array of integer coordinates, using the receiver's
 * background color. The array contains alternating x and y values
 * which are considered to represent points which are the vertices of
 * the polygon. Lines are drawn between each consecutive pair, and
 * between the first pair and last pair in the array.
 *
 * @param pointArray an array of alternating x and y values which are the vertices of the polygon
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT if pointArray is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawPolygon	
 */
public void fillPolygon(int[] pointArray) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	checkGC(FILL);
	if (data.gdipGraphics != 0) {
		int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
		Gdip.Graphics_FillPolygon(data.gdipGraphics, data.gdipBrush, pointArray, pointArray.length / 2, mode);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) {
		for (int i = 0; i < pointArray.length; i+=2) {
			pointArray[i]--;
		}
	}
	OS.Polygon(handle, pointArray, pointArray.length / 2);
	if ((data.style & SWT.MIRRORED) != 0) {
		for (int i = 0; i < pointArray.length; i+=2) {
			pointArray[i]++;
		}
	}
}

/** 
 * Fills the interior of the rectangle specified by the arguments,
 * using the receiver's background color. 
 *
 * @param x the x coordinate of the rectangle to be filled
 * @param y the y coordinate of the rectangle to be filled
 * @param width the width of the rectangle to be filled
 * @param height the height of the rectangle to be filled
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawRectangle(int, int, int, int)
 */
public void fillRectangle (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FILL);
	if (data.gdipGraphics != 0) {
		if (width < 0) {
			x = x + width;
			width = -width;
		}
		if (height < 0) {
			y = y + height;
			height = -height;
		}
		Gdip.Graphics_FillRectangle(data.gdipGraphics, data.gdipBrush, x, y, width, height);
		return;
	}
	int rop2 = 0;
	if (OS.IsWinCE) {
		rop2 = OS.SetROP2(handle, OS.R2_COPYPEN);
		OS.SetROP2(handle, rop2);
	} else {
		rop2 = OS.GetROP2(handle);
	}
	int dwRop = rop2 == OS.R2_XORPEN ? OS.PATINVERT : OS.PATCOPY;
	OS.PatBlt(handle, x, y, width, height, dwRop);
}

/** 
 * Fills the interior of the specified rectangle, using the receiver's
 * background color. 
 *
 * @param rect the rectangle to be filled
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawRectangle(int, int, int, int)
 */
public void fillRectangle (Rectangle rect) {
	if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	fillRectangle (rect.x, rect.y, rect.width, rect.height);
}

/** 
 * Fills the interior of the round-cornered rectangle specified by 
 * the arguments, using the receiver's background color. 
 *
 * @param x the x coordinate of the rectangle to be filled
 * @param y the y coordinate of the rectangle to be filled
 * @param width the width of the rectangle to be filled
 * @param height the height of the rectangle to be filled
 * @param arcWidth the width of the arc
 * @param arcHeight the height of the arc
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #drawRoundRectangle
 */
public void fillRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FILL);
	if (data.gdipGraphics != 0) {
		fillRoundRectangleGdip(data.gdipGraphics, data.gdipBrush, x, y, width, height, arcWidth, arcHeight);
		return;
	}
	if ((data.style & SWT.MIRRORED) != 0) x--;
	OS.RoundRect(handle, x,y,x+width+1,y+height+1,arcWidth, arcHeight);
}

void fillRoundRectangleGdip (long /*int*/ gdipGraphics, long /*int*/ brush, int x, int y, int width, int height, int arcWidth, int arcHeight) {
	int nx = x;
	int ny = y;
	int nw = width;
	int nh = height;
	int naw = arcWidth;
	int nah = arcHeight;
	
	if (nw < 0) {
		nw = 0 - nw;
		nx = nx - nw;
	}
	if (nh < 0) {
		nh = 0 - nh;
		ny = ny -nh;
	}
	if (naw < 0) 
		naw = 0 - naw;
	if (nah < 0)
		nah = 0 - nah;

	if (naw == 0 || nah == 0) {
		Gdip.Graphics_FillRectangle(data.gdipGraphics, data.gdipBrush, x, y, width, height);
	} else {
		long /*int*/ path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate);
		if (path == 0) SWT.error(SWT.ERROR_NO_HANDLES);
		if (nw > naw) {
			if (nh > nah) {
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nah, 0, -90);
				Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nah, -90, -90);
				Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, naw, nah, -180, -90);
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny + nh - nah, naw, nah, -270, -90);
			} else {
				Gdip.GraphicsPath_AddArc(path, nx + nw - naw, ny, naw, nh, -270, -180);
				Gdip.GraphicsPath_AddArc(path, nx, ny, naw, nh, -90, -180);
			}
		} else {
			if (nh > nah) {
				Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nah, 0, -180);
				Gdip.GraphicsPath_AddArc(path, nx, ny + nh - nah, nw, nah, -180, -180);
			} else {
				Gdip.GraphicsPath_AddArc(path, nx, ny, nw, nh, 0, 360);
			}
		}
		Gdip.GraphicsPath_CloseFigure(path);
		Gdip.Graphics_FillPath(gdipGraphics, brush, path);
		Gdip.GraphicsPath_delete(path);
	}
}

void flush () {
	if (data.gdipGraphics != 0) {
		Gdip.Graphics_Flush(data.gdipGraphics, 0);
		/*
		* Note Flush() does not flush the output to the
		* underline HDC. This is done by calling GetHDC()
		* followed by ReleaseHDC().
		*/
		long /*int*/ hdc = Gdip.Graphics_GetHDC(data.gdipGraphics);
		Gdip.Graphics_ReleaseHDC(data.gdipGraphics, hdc);
	}
}

/**
 * Returns the <em>advance width</em> of the specified character in
 * the font which is currently selected into the receiver.
 * <p>
 * The advance width is defined as the horizontal distance the cursor
 * should move after printing the character in the selected font.
 * </p>
 *
 * @param ch the character to measure
 * @return the distance in the x direction to move past the character before painting the next
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public int getAdvanceWidth(char ch) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FONT);
	if (OS.IsWinCE) {
		SIZE size = new SIZE();
		OS.GetTextExtentPoint32W(handle, new char[]{ch}, 1, size);
		return size.cx;
	}
	int tch = ch;
	if (ch > 0x7F) {
		TCHAR buffer = new TCHAR(getCodePage(), ch, false);
		tch = buffer.tcharAt(0);
	}
	int[] width = new int[1];
	OS.GetCharWidth(handle, tch, tch, width);
	return width[0];
}

/**
 * Returns <code>true</code> if receiver is using the operating system's
 * advanced graphics subsystem.  Otherwise, <code>false</code> is returned
 * to indicate that normal graphics are in use.
 * <p>
 * Advanced graphics may not be installed for the operating system.  In this
 * case, <code>false</code> is always returned.  Some operating system have
 * only one graphics subsystem.  If this subsystem supports advanced graphics,
 * then <code>true</code> is always returned.  If any graphics operation such
 * as alpha, antialias, patterns, interpolation, paths, clipping or transformation
 * has caused the receiver to switch from regular to advanced graphics mode,
 * <code>true</code> is returned.  If the receiver has been explicitly switched
 * to advanced mode and this mode is supported, <code>true</code> is returned.
 * </p>
 *
 * @return the advanced value
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public boolean getAdvanced() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.gdipGraphics != 0;
}

/**
 * Returns the receiver's alpha value. The alpha value
 * is between 0 (transparent) and 255 (opaque).
 *
 * @return the alpha value
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1
 */
public int getAlpha() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.alpha;
}

/**
 * Returns the receiver's anti-aliasing setting value, which will be
 * one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or
 * <code>SWT.ON</code>. Note that this controls anti-aliasing for all
 * <em>non-text drawing</em> operations.
 *
 * @return the anti-aliasing setting
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see #getTextAntialias
 * 
 * @since 3.1
 */
public int getAntialias() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0) return SWT.DEFAULT;
	int mode = Gdip.Graphics_GetSmoothingMode(data.gdipGraphics);
	switch (mode) {
		case Gdip.SmoothingModeDefault: return SWT.DEFAULT;
		case Gdip.SmoothingModeHighSpeed:
		case Gdip.SmoothingModeNone: return SWT.OFF;
		case Gdip.SmoothingModeAntiAlias:
		case Gdip.SmoothingModeAntiAlias8x8:
		case Gdip.SmoothingModeHighQuality: return SWT.ON;
	}
	return SWT.DEFAULT;
}

/** 
 * Returns the background color.
 *
 * @return the receiver's background color
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Color getBackground() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return Color.win32_new(data.device, data.background);
}

/** 
 * Returns the background pattern. The default value is
 * <code>null</code>.
 *
 * @return the receiver's background pattern
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see Pattern
 * 
 * @since 3.1
 */
public Pattern getBackgroundPattern() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.backgroundPattern;
}

/**
 * Returns the width of the specified character in the font
 * selected into the receiver. 
 * <p>
 * The width is defined as the space taken up by the actual
 * character, not including the leading and tailing whitespace
 * or overhang.
 * </p>
 *
 * @param ch the character to measure
 * @return the width of the character
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public int getCharWidth(char ch) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FONT);
	
	/* GetCharABCWidths only succeeds on truetype fonts */
	if (!OS.IsWinCE) {
		int tch = ch;
		if (ch > 0x7F) {
			TCHAR buffer = new TCHAR(getCodePage(), ch, false);
			tch = buffer.tcharAt (0);
		}
		int[] width = new int[3];
		if (OS.GetCharABCWidths(handle, tch, tch, width)) {
			return width[1];
		}
	}
	
	/* It wasn't a truetype font */
	TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA();
	OS.GetTextMetrics(handle, lptm);
	SIZE size = new SIZE();
	OS.GetTextExtentPoint32W(handle, new char[]{ch}, 1, size);
	return size.cx - lptm.tmOverhang;
}

/** 
 * Returns the bounding rectangle of the receiver's clipping
 * region. If no clipping region is set, the return value
 * will be a rectangle which covers the entire bounds of the
 * object the receiver is drawing on.
 *
 * @return the bounding rectangle of the clipping region
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Rectangle getClipping() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Rect rect = new Rect();
		Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
		Gdip.Graphics_GetVisibleClipBounds(gdipGraphics, rect);
		Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
		return new Rectangle(rect.X, rect.Y, rect.Width, rect.Height);
	}
	RECT rect = new RECT();
	OS.GetClipBox(handle, rect);
	return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
}

/** 
 * Sets the region managed by the argument to the current
 * clipping region of the receiver.
 *
 * @param region the region to fill with the clipping region
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the region is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the region is disposed</li>
 * </ul>	
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void getClipping (Region region) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (region == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if (region.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		long /*int*/ rgn = Gdip.Region_new();
		Gdip.Graphics_GetClip(data.gdipGraphics, rgn);
		if (Gdip.Region_IsInfinite(rgn, gdipGraphics)) {
			Rect rect = new Rect();
			Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
			Gdip.Graphics_GetVisibleClipBounds(gdipGraphics, rect);
			Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
			OS.SetRectRgn(region.handle, rect.X, rect.Y, rect.X + rect.Width, rect.Y + rect.Height);
		} else {
			long /*int*/ matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
			long /*int*/ identity = Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
			Gdip.Graphics_GetTransform(gdipGraphics, matrix);
			Gdip.Graphics_SetTransform(gdipGraphics, identity);
			long /*int*/ hRgn = Gdip.Region_GetHRGN(rgn, data.gdipGraphics);
			Gdip.Graphics_SetTransform(gdipGraphics, matrix);
			Gdip.Matrix_delete(identity);
			Gdip.Matrix_delete(matrix);
			if (!OS.IsWinCE) {
				POINT pt = new POINT ();
				OS.GetWindowOrgEx (handle, pt);
				OS.OffsetRgn (hRgn, pt.x, pt.y);
			}
			OS.CombineRgn(region.handle, hRgn, 0, OS.RGN_COPY);			
			OS.DeleteObject(hRgn);
		}
		Gdip.Region_delete(rgn);
		return;
	}
	POINT pt = new POINT ();
	if (!OS.IsWinCE) OS.GetWindowOrgEx (handle, pt);
	int result = OS.GetClipRgn (handle, region.handle);
	if (result != 1) {
		RECT rect = new RECT();
		OS.GetClipBox(handle, rect);
		OS.SetRectRgn(region.handle, rect.left, rect.top, rect.right, rect.bottom);
	} else {
		OS.OffsetRgn (region.handle, pt.x, pt.y);
	}
	if (!OS.IsWinCE) {
		long /*int*/ metaRgn = OS.CreateRectRgn (0, 0, 0, 0);
		if (OS.GetMetaRgn (handle, metaRgn) != 0) {
			OS.OffsetRgn (metaRgn, pt.x, pt.y);
			OS.CombineRgn (region.handle, metaRgn, region.handle, OS.RGN_AND);
		}
		OS.DeleteObject(metaRgn);
		long /*int*/ hwnd = data.hwnd;
		if (hwnd != 0 && data.ps != null) {
			long /*int*/ sysRgn = OS.CreateRectRgn (0, 0, 0, 0);
			if (OS.GetRandomRgn (handle, sysRgn, OS.SYSRGN) == 1) {
				if (OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
					if ((OS.GetLayout(handle) & OS.LAYOUT_RTL) != 0) {
						int nBytes = OS.GetRegionData (sysRgn, 0, null);
						int [] lpRgnData = new int [nBytes / 4];
						OS.GetRegionData (sysRgn, nBytes, lpRgnData);
						long /*int*/ newSysRgn = OS.ExtCreateRegion(new float [] {-1, 0, 0, 1, 0, 0}, nBytes, lpRgnData);
						OS.DeleteObject(sysRgn);
						sysRgn = newSysRgn;
					}
				}
				if (OS.IsWinNT) {
					OS.MapWindowPoints(0, hwnd, pt, 1);
					OS.OffsetRgn(sysRgn, pt.x, pt.y);
				}
				OS.CombineRgn (region.handle, sysRgn, region.handle, OS.RGN_AND);
			}
			OS.DeleteObject(sysRgn);
		}
	}
}

int getCodePage () {
	if (OS.IsUnicode) return OS.CP_ACP;
	int[] lpCs = new int[8];
	int cs = OS.GetTextCharset(handle);
	OS.TranslateCharsetInfo(cs, lpCs, OS.TCI_SRCCHARSET);
	return lpCs[1];
}

long /*int*/ getFgBrush() {
	return data.foregroundPattern != null ? data.foregroundPattern.handle : data.gdipFgBrush;
}

/** 
 * Returns the receiver's fill rule, which will be one of
 * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>.
 *
 * @return the receiver's fill rule
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1
 */
public int getFillRule() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (OS.IsWinCE) return SWT.FILL_EVEN_ODD;
	return OS.GetPolyFillMode(handle) == OS.WINDING ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD;
}

/** 
 * Returns the font currently being used by the receiver
 * to draw and measure text.
 *
 * @return the receiver's font
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Font getFont () {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.font;
}

/**
 * Returns a FontMetrics which contains information
 * about the font currently being used by the receiver
 * to draw and measure text.
 *
 * @return font metrics for the receiver's font
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public FontMetrics getFontMetrics() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	checkGC(FONT);
	TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA();
	OS.GetTextMetrics(handle, lptm);
	return FontMetrics.win32_new(lptm);
}

/** 
 * Returns the receiver's foreground color.
 *
 * @return the color used for drawing foreground things
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Color getForeground() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return Color.win32_new(data.device, data.foreground);
}

/** 
 * Returns the foreground pattern. The default value is
 * <code>null</code>.
 *
 * @return the receiver's foreground pattern
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see Pattern
 * 
 * @since 3.1
 */
public Pattern getForegroundPattern() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.foregroundPattern;
}

/** 
 * Returns the GCData.
 * <p>
 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
 * API for <code>GC</code>. It is marked public only so that it
 * can be shared within the packages provided by SWT. It is not
 * available on all platforms, and should never be called from
 * application code.
 * </p>
 *
 * @return the receiver's GCData
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see GCData
 * 
 * @noreference This method is not intended to be referenced by clients.
 * 
 * @since 3.2
 */
public GCData getGCData() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data;
}

/** 
 * Returns the receiver's interpolation setting, which will be one of
 * <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, 
 * <code>SWT.LOW</code> or <code>SWT.HIGH</code>.
 *
 * @return the receiver's interpolation setting
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1
 */
public int getInterpolation() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0) return SWT.DEFAULT;
	int mode = Gdip.Graphics_GetInterpolationMode(data.gdipGraphics);
	switch (mode) {
		case Gdip.InterpolationModeDefault: return SWT.DEFAULT;
		case Gdip.InterpolationModeNearestNeighbor: return SWT.NONE;
		case Gdip.InterpolationModeBilinear:
		case Gdip.InterpolationModeLowQuality: return SWT.LOW;
		case Gdip.InterpolationModeBicubic:
		case Gdip.InterpolationModeHighQualityBilinear:
		case Gdip.InterpolationModeHighQualityBicubic:
		case Gdip.InterpolationModeHighQuality: return SWT.HIGH;
	}
	return SWT.DEFAULT;
}

/** 
 * Returns the receiver's line attributes.
 *
 * @return the line attributes used for drawing lines
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.3 
 */
public LineAttributes getLineAttributes() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	float[] dashes = null;
	if (data.lineDashes != null) {
		dashes = new float[data.lineDashes.length];
		System.arraycopy(data.lineDashes, 0, dashes, 0, dashes.length);
	}
	return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, data.lineDashesOffset, data.lineMiterLimit);
}

/** 
 * Returns the receiver's line cap style, which will be one
 * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>,
 * or <code>SWT.CAP_SQUARE</code>.
 *
 * @return the cap style used for drawing lines
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public int getLineCap() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.lineCap;
}

/** 
 * Returns the receiver's line dash style. The default value is
 * <code>null</code>.
 *
 * @return the line dash style used for drawing lines
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public int[] getLineDash() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.lineDashes == null) return null;
	int[] lineDashes = new int[data.lineDashes.length];
	for (int i = 0; i < lineDashes.length; i++) {
		lineDashes[i] = (int)data.lineDashes[i];
	}
	return lineDashes;	
}

/** 
 * Returns the receiver's line join style, which will be one
 * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>,
 * or <code>SWT.JOIN_BEVEL</code>.
 *
 * @return the join style used for drawing lines
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public int getLineJoin() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.lineJoin;
}

/** 
 * Returns the receiver's line style, which will be one
 * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>,
 * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or
 * <code>SWT.LINE_DASHDOTDOT</code>.
 *
 * @return the style used for drawing lines
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public int getLineStyle() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.lineStyle;
}

/** 
 * Returns the width that will be used when drawing lines
 * for all of the figure drawing operations (that is,
 * <code>drawLine</code>, <code>drawRectangle</code>, 
 * <code>drawPolyline</code>, and so forth.
 *
 * @return the receiver's line width 
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public int getLineWidth() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return (int)data.lineWidth;
}

/**
 * Returns the receiver's style information.
 * <p>
 * Note that the value which is returned by this method <em>may
 * not match</em> the value which was provided to the constructor
 * when the receiver was created. This can occur when the underlying
 * operating system does not support a particular combination of
 * requested styles. 
 * </p>
 *
 * @return the style bits
 *  
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *   
 * @since 2.1.2
 */
public int getStyle () {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	return data.style;
}

/**
 * Returns the receiver's text drawing anti-aliasing setting value,
 * which will be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or
 * <code>SWT.ON</code>. Note that this controls anti-aliasing
 * <em>only</em> for text drawing operations.
 *
 * @return the anti-aliasing setting
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see #getAntialias
 * 
 * @since 3.1
 */
public int getTextAntialias() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0) return SWT.DEFAULT;
	int mode = Gdip.Graphics_GetTextRenderingHint(data.gdipGraphics);
	switch (mode) {
		case Gdip.TextRenderingHintSystemDefault: return SWT.DEFAULT;
		case Gdip.TextRenderingHintSingleBitPerPixel:
		case Gdip.TextRenderingHintSingleBitPerPixelGridFit: return SWT.OFF;
		case Gdip.TextRenderingHintAntiAlias:
		case Gdip.TextRenderingHintAntiAliasGridFit:
		case Gdip.TextRenderingHintClearTypeGridFit: return SWT.ON;
	}
	return SWT.DEFAULT;
}

/** 
 * Sets the parameter to the transform that is currently being
 * used by the receiver.
 *
 * @param transform the destination to copy the transform into
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the parameter is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see Transform
 * 
 * @since 3.1
 */
public void getTransform(Transform transform) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Gdip.Graphics_GetTransform(gdipGraphics, transform.handle);
		long /*int*/ identity = identity();
		Gdip.Matrix_Invert(identity);
		Gdip.Matrix_Multiply(transform.handle, identity, Gdip.MatrixOrderAppend);
		Gdip.Matrix_delete(identity);
	} else {
		transform.setElements(1, 0, 0, 1, 0, 0);
	}
}

/** 
 * Returns <code>true</code> if this GC is drawing in the mode
 * where the resulting color in the destination is the
 * <em>exclusive or</em> of the color values in the source
 * and the destination, and <code>false</code> if it is
 * drawing in the mode where the destination color is being
 * replaced with the source color value.
 *
 * @return <code>true</code> true if the receiver is in XOR mode, and false otherwise
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public boolean getXORMode() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	int rop2 = 0;
	if (OS.IsWinCE) {
		rop2 = OS.SetROP2 (handle, OS.R2_COPYPEN);
		OS.SetROP2 (handle, rop2);
	} else {
		rop2 = OS.GetROP2(handle);
	}
	return rop2 == OS.R2_XORPEN;
}

void initGdip() {
	data.device.checkGDIP();
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) return;
	/*
	* Feature in GDI+. The GDI+ clipping set with Graphics->SetClip()
	* is always intersected with the GDI clipping at the time the
	* GDI+ graphics is created.  This means that the clipping 
	* cannot be reset.  The fix is to clear the clipping before
	* the GDI+ graphics is created and reset it afterwards.
	*/
	long /*int*/ hRgn = OS.CreateRectRgn(0, 0, 0, 0);
	int result = OS.GetClipRgn(handle, hRgn);
	if (!OS.IsWinCE) {
		POINT pt = new POINT ();
		OS.GetWindowOrgEx (handle, pt);
		OS.OffsetRgn (hRgn, pt.x, pt.y);
	}
	OS.SelectClipRgn(handle, 0);

	/*
	* Bug in GDI+.  GDI+ does not work when the HDC layout is RTL.  There
	* are many issues like pixel corruption, but the most visible problem
	* is that it does not have an effect when drawing to an bitmap.  The
	* fix is to clear the bit before creating the GDI+ graphics and install
	* a mirroring matrix ourselves.
	*/
	if ((data.style & SWT.MIRRORED) != 0) {
		OS.SetLayout(handle, OS.GetLayout(handle) & ~OS.LAYOUT_RTL);
	}

	gdipGraphics = data.gdipGraphics = Gdip.Graphics_new(handle);
	if (gdipGraphics == 0) SWT.error(SWT.ERROR_NO_HANDLES);
	Gdip.Graphics_SetPageUnit(gdipGraphics, Gdip.UnitPixel);
	Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf);
	if ((data.style & SWT.MIRRORED) != 0) {
		long /*int*/ matrix = identity();
		Gdip.Graphics_SetTransform(gdipGraphics, matrix);
		Gdip.Matrix_delete(matrix);
	}
	if (result == 1) setClipping(hRgn);
	OS.DeleteObject(hRgn);		
	data.state = 0;
	if (data.hPen != 0) {
		OS.SelectObject(handle, OS.GetStockObject(OS.NULL_PEN));
		OS.DeleteObject(data.hPen);
		data.hPen = 0;
	}
	if (data.hBrush != 0) {
		OS.SelectObject(handle, OS.GetStockObject(OS.NULL_BRUSH));
		OS.DeleteObject(data.hBrush);
		data.hBrush = 0;
	}
}

long /*int*/ identity() {
	if ((data.style & SWT.MIRRORED) != 0) {
		int width = 0;
		int technology = OS.GetDeviceCaps(handle, OS.TECHNOLOGY);
		if (technology == OS.DT_RASPRINTER) {
			width = OS.GetDeviceCaps(handle, OS.PHYSICALWIDTH);
		} else {
			Image image = data.image;
			if (image != null) {
				BITMAP bm = new BITMAP();
				OS.GetObject(image.handle, BITMAP.sizeof, bm);
				width = bm.bmWidth;
			} else {
				long /*int*/ hwnd = OS.IsWinCE ? data.hwnd : OS.WindowFromDC(handle);
				if (hwnd != 0) {
					RECT rect = new RECT();
					OS.GetClientRect(hwnd, rect);
					width = rect.right - rect.left;
				} else {
					long /*int*/ hBitmap = OS.GetCurrentObject(handle, OS.OBJ_BITMAP);
					BITMAP bm = new BITMAP();
					OS.GetObject(hBitmap, BITMAP.sizeof, bm);
					width = bm.bmWidth;
				}
			}
		}
		POINT pt = new POINT ();
		if (!OS.IsWinCE) OS.GetWindowOrgEx (handle, pt);
		return Gdip.Matrix_new(-1, 0, 0, 1, width + 2 * pt.x, 0);
	}
	return Gdip.Matrix_new(1, 0, 0, 1, 0, 0);
}

void init(Drawable drawable, GCData data, long /*int*/ hDC) {
	int foreground = data.foreground;
	if (foreground != -1) {
		data.state &= ~(FOREGROUND | FOREGROUND_TEXT | PEN);
	} else {
		data.foreground = OS.GetTextColor(hDC);
	}
	int background = data.background;
	if (background != -1) {
		data.state &= ~(BACKGROUND | BACKGROUND_TEXT | BRUSH);
	} else {
		data.background = OS.GetBkColor(hDC);
	}
	data.state &= ~(NULL_BRUSH | NULL_PEN);
	Font font = data.font;
	if (font != null) {
		data.state &= ~FONT;
	} else {
		data.font = Font.win32_new(device, OS.GetCurrentObject(hDC, OS.OBJ_FONT));
	}
	long /*int*/ hPalette = data.device.hPalette;
	if (hPalette != 0) {
		OS.SelectPalette(hDC, hPalette, true);
		OS.RealizePalette(hDC);
	}
	Image image = data.image;
	if (image != null) {
		data.hNullBitmap = OS.SelectObject(hDC, image.handle);
		image.memGC = this;
	}
	int layout = data.layout;
	if (layout != -1) {
		if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
			int flags = OS.GetLayout(hDC);
			if ((flags & OS.LAYOUT_RTL) != (layout & OS.LAYOUT_RTL)) {
				flags &= ~OS.LAYOUT_RTL;
				OS.SetLayout(hDC, flags | layout);
			}
			if ((data.style & SWT.RIGHT_TO_LEFT) != 0) data.style |= SWT.MIRRORED;
		}
	}	
	this.drawable = drawable;
	this.data = data;
	handle = hDC;
}

/**
 * Returns an integer hash code for the receiver. Any two 
 * objects that return <code>true</code> when passed to 
 * <code>equals</code> must return the same value for this
 * method.
 *
 * @return the receiver's hash
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 *
 * @see #equals
 */
@Override
public int hashCode () {
	return (int)/*64*/handle;
}

/**
 * Returns <code>true</code> if the receiver has a clipping
 * region set into it, and <code>false</code> otherwise.
 * If this method returns false, the receiver will draw on all
 * available space in the destination. If it returns true, 
 * it will draw only in the area that is covered by the region
 * that can be accessed with <code>getClipping(region)</code>.
 *
 * @return <code>true</code> if the GC has a clipping region, and <code>false</code> otherwise
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public boolean isClipped() {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		long /*int*/ rgn = Gdip.Region_new();
		Gdip.Graphics_GetClip(data.gdipGraphics, rgn);
		boolean isInfinite = Gdip.Region_IsInfinite(rgn, gdipGraphics);
		Gdip.Region_delete(rgn);
		return !isInfinite;
	}
	long /*int*/ region = OS.CreateRectRgn(0, 0, 0, 0);
	int result = OS.GetClipRgn(handle, region);
	OS.DeleteObject(region);
	return result > 0;
}

/**
 * Returns <code>true</code> if the GC has been disposed,
 * and <code>false</code> otherwise.
 * <p>
 * This method gets the dispose state for the GC.
 * When a GC has been disposed, it is an error to
 * invoke any other method (except {@link #dispose()}) using the GC.
 *
 * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise
 */
@Override
public boolean isDisposed() {
	return handle == 0;
}

float measureSpace(long /*int*/ font, long /*int*/ format) {
	PointF pt = new PointF();
	RectF bounds = new RectF();
	Gdip.Graphics_MeasureString(data.gdipGraphics, new char[]{' '}, 1, font, pt, format, bounds);
	return bounds.Width;
}

/**
 * Sets the receiver to always use the operating system's advanced graphics
 * subsystem for all graphics operations if the argument is <code>true</code>.
 * If the argument is <code>false</code>, the advanced graphics subsystem is 
 * no longer used, advanced graphics state is cleared and the normal graphics
 * subsystem is used from now on.
 * <p>
 * Normally, the advanced graphics subsystem is invoked automatically when
 * any one of the alpha, antialias, patterns, interpolation, paths, clipping
 * or transformation operations in the receiver is requested.  When the receiver
 * is switched into advanced mode, the advanced graphics subsystem performs both
 * advanced and normal graphics operations.  Because the two subsystems are
 * different, their output may differ.  Switching to advanced graphics before
 * any graphics operations are performed ensures that the output is consistent.
 * </p><p>
 * Advanced graphics may not be installed for the operating system.  In this
 * case, this operation does nothing.  Some operating system have only one
 * graphics subsystem, so switching from normal to advanced graphics does
 * nothing.  However, switching from advanced to normal graphics will always
 * clear the advanced graphics state, even for operating systems that have
 * only one graphics subsystem.
 * </p>
 *
 * @param advanced the new advanced graphics state
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @see #setAlpha
 * @see #setAntialias
 * @see #setBackgroundPattern
 * @see #setClipping(Path)
 * @see #setForegroundPattern
 * @see #setLineAttributes
 * @see #setInterpolation
 * @see #setTextAntialias
 * @see #setTransform
 * @see #getAdvanced
 * 
 * @since 3.1
 */
public void setAdvanced(boolean advanced) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (advanced && data.gdipGraphics != 0) return;
	if (advanced) {
		try {
			initGdip();
		} catch (SWTException e) {}
	} else {
		disposeGdip();
		data.alpha = 0xFF;
		data.backgroundPattern = data.foregroundPattern = null;
		data.state = 0;
		setClipping(0);
		if ((data.style & SWT.MIRRORED) != 0) {
			OS.SetLayout(handle, OS.GetLayout(handle) | OS.LAYOUT_RTL);
		}
	}
}

/**
 * Sets the receiver's anti-aliasing value to the parameter, 
 * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code>
 * or <code>SWT.ON</code>. Note that this controls anti-aliasing for all
 * <em>non-text drawing</em> operations.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 *
 * @param antialias the anti-aliasing setting
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>,
 *                                 <code>SWT.OFF</code> or <code>SWT.ON</code></li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see #getAdvanced
 * @see #setAdvanced
 * @see #setTextAntialias
 * 
 * @since 3.1
 */
public void setAntialias(int antialias) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0 && antialias == SWT.DEFAULT) return;
	int mode = 0;
	switch (antialias) {
		case SWT.DEFAULT:
			mode = Gdip.SmoothingModeDefault;
			break;
		case SWT.OFF:
			mode = Gdip.SmoothingModeNone;
			break;
		case SWT.ON:
			mode = Gdip.SmoothingModeAntiAlias;
			break;			
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	initGdip();
	Gdip.Graphics_SetSmoothingMode(data.gdipGraphics, mode);
}

/**
 * Sets the receiver's alpha value which must be
 * between 0 (transparent) and 255 (opaque).
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * @param alpha the alpha value
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setAlpha(int alpha) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0 && (alpha & 0xFF) == 0xFF) return;
	initGdip();
	data.alpha = alpha & 0xFF;
	data.state &= ~(BACKGROUND | FOREGROUND);
}

/**
 * Sets the background color. The background color is used
 * for fill operations and as the background color when text
 * is drawn.
 *
 * @param color the new background color for the receiver
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the color is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setBackground (Color color) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (data.backgroundPattern == null && data.background == color.handle) return;
	data.backgroundPattern = null;
	data.background = color.handle;
	data.state &= ~(BACKGROUND | BACKGROUND_TEXT);
}

/** 
 * Sets the background pattern. The default value is <code>null</code>.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param pattern the new background pattern
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Pattern
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setBackgroundPattern (Pattern pattern) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (data.gdipGraphics == 0 && pattern == null) return;
	initGdip();
	if (data.backgroundPattern == pattern) return;
	data.backgroundPattern = pattern;
	data.state &= ~BACKGROUND;
}

void setClipping(long /*int*/ clipRgn) {
	long /*int*/ hRgn = clipRgn;
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		if (hRgn != 0) {
			long /*int*/ region = Gdip.Region_new(hRgn);
			Gdip.Graphics_SetClip(gdipGraphics, region, Gdip.CombineModeReplace);
			Gdip.Region_delete(region);
		} else {
			Gdip.Graphics_ResetClip(gdipGraphics);
		}
	} else {
		POINT pt = null;
		if (hRgn != 0 && !OS.IsWinCE) {
			pt = new POINT();
			OS.GetWindowOrgEx(handle, pt);
			OS.OffsetRgn(hRgn, -pt.x, -pt.y);
		}
		OS.SelectClipRgn(handle, hRgn);
		if (hRgn != 0 && !OS.IsWinCE) {
			OS.OffsetRgn(hRgn, pt.x, pt.y);
		}
	}
}

/**
 * Sets the area of the receiver which can be changed
 * by drawing operations to the rectangular area specified
 * by the arguments.
 *
 * @param x the x coordinate of the clipping rectangle
 * @param y the y coordinate of the clipping rectangle
 * @param width the width of the clipping rectangle
 * @param height the height of the clipping rectangle
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setClipping (int x, int y, int width, int height) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	long /*int*/ hRgn = OS.CreateRectRgn(x, y, x + width, y + height);
	setClipping(hRgn);
	OS.DeleteObject(hRgn);
}

/**
 * Sets the area of the receiver which can be changed
 * by drawing operations to the path specified
 * by the argument.  
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param path the clipping path.
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Path
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setClipping (Path path) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	setClipping(0);
	if (path != null) {
		initGdip();
		int mode = OS.GetPolyFillMode(handle) == OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate;
		Gdip.GraphicsPath_SetFillMode(path.handle, mode);
		Gdip.Graphics_SetClipPath(data.gdipGraphics, path.handle);
	}
}

/**
 * Sets the area of the receiver which can be changed
 * by drawing operations to the rectangular area specified
 * by the argument.  Specifying <code>null</code> for the
 * rectangle reverts the receiver's clipping area to its
 * original value.
 *
 * @param rect the clipping rectangle or <code>null</code>
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setClipping (Rectangle rect) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (rect == null) {
		setClipping(0);
	} else {
		setClipping(rect.x, rect.y, rect.width, rect.height);
	}
}

/**
 * Sets the area of the receiver which can be changed
 * by drawing operations to the region specified
 * by the argument.  Specifying <code>null</code> for the
 * region reverts the receiver's clipping area to its
 * original value.
 *
 * @param region the clipping region or <code>null</code>
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setClipping (Region region) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	setClipping(region != null ? region.handle : 0);
}

/** 
 * Sets the receiver's fill rule to the parameter, which must be one of
 * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>.
 *
 * @param rule the new fill rule
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code>
 *                                 or <code>SWT.FILL_WINDING</code></li>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1
 */
public void setFillRule(int rule) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (OS.IsWinCE) return;
	int mode = OS.ALTERNATE;
	switch (rule) {
		case SWT.FILL_WINDING: mode = OS.WINDING; break;
		case SWT.FILL_EVEN_ODD: mode = OS.ALTERNATE; break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	OS.SetPolyFillMode(handle, mode);
}

/** 
 * Sets the font which will be used by the receiver
 * to draw and measure text to the argument. If the
 * argument is null, then a default font appropriate
 * for the platform will be used instead.
 *
 * @param font the new font for the receiver, or null to indicate a default font
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setFont (Font font) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	data.font = font != null ? font : data.device.systemFont;
	data.state &= ~FONT;
}

/**
 * Sets the foreground color. The foreground color is used
 * for drawing operations including when text is drawn.
 *
 * @param color the new foreground color for the receiver
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the color is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setForeground (Color color) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (data.foregroundPattern == null && color.handle == data.foreground) return;
	data.foregroundPattern = null;
	data.foreground = color.handle;
	data.state &= ~(FOREGROUND | FOREGROUND_TEXT);
}

/** 
 * Sets the foreground pattern. The default value is <code>null</code>.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * @param pattern the new foreground pattern
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Pattern
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setForegroundPattern (Pattern pattern) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (data.gdipGraphics == 0 && pattern == null) return;
	initGdip();
	if (data.foregroundPattern == pattern) return;
	data.foregroundPattern = pattern;
	data.state &= ~FOREGROUND;
}

/** 
 * Sets the receiver's interpolation setting to the parameter, which
 * must be one of <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, 
 * <code>SWT.LOW</code> or <code>SWT.HIGH</code>.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param interpolation the new interpolation setting
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.DEFAULT</code>, 
 *                                 <code>SWT.NONE</code>, <code>SWT.LOW</code> or <code>SWT.HIGH</code>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setInterpolation(int interpolation) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0 && interpolation == SWT.DEFAULT) return;
	int mode = 0;
	switch (interpolation) {
		case SWT.DEFAULT: mode = Gdip.InterpolationModeDefault; break;
		case SWT.NONE: mode = Gdip.InterpolationModeNearestNeighbor; break;
		case SWT.LOW: mode = Gdip.InterpolationModeLowQuality; break;
		case SWT.HIGH: mode = Gdip.InterpolationModeHighQuality; break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	initGdip();
	Gdip.Graphics_SetInterpolationMode(data.gdipGraphics, mode);
}

/**
 * Sets the receiver's line attributes.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * @param attributes the line attributes
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the attributes is null</li>
 *    <li>ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see LineAttributes
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.3
 */
public void setLineAttributes(LineAttributes attributes) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	int mask = 0;
	float lineWidth = attributes.width;
	if (lineWidth != data.lineWidth) {
		mask |= LINE_WIDTH | DRAW_OFFSET;
	}
	int lineStyle = attributes.style;
	if (lineStyle != data.lineStyle) {
		mask |= LINE_STYLE;
		switch (lineStyle) {
			case SWT.LINE_SOLID:
			case SWT.LINE_DASH:
			case SWT.LINE_DOT:
			case SWT.LINE_DASHDOT:
			case SWT.LINE_DASHDOTDOT:
				break;
			case SWT.LINE_CUSTOM:
				if (attributes.dash == null) lineStyle = SWT.LINE_SOLID;
				break;
			default:
				SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		}
	}
	int join = attributes.join;
	if (join != data.lineJoin) {
		mask |= LINE_JOIN;
		switch (join) {
			case SWT.JOIN_MITER:
			case SWT.JOIN_ROUND:
			case SWT.JOIN_BEVEL:
				break;
			default:
				SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		}
	}
	int cap = attributes.cap;
	if (cap != data.lineCap) {
		mask |= LINE_CAP;
		switch (cap) {
			case SWT.CAP_FLAT:
			case SWT.CAP_ROUND:
			case SWT.CAP_SQUARE:
				break;
			default:
				SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		}
	}
	float[] dashes = attributes.dash;
	float[] lineDashes = data.lineDashes;
	if (dashes != null && dashes.length > 0) {
		boolean changed = lineDashes == null || lineDashes.length != dashes.length;
		for (int i = 0; i < dashes.length; i++) {
			float dash = dashes[i];
			if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
			if (!changed && lineDashes[i] != dash) changed = true;
		}
		if (changed) {
			float[] newDashes = new float[dashes.length];
			System.arraycopy(dashes, 0, newDashes, 0, dashes.length);
			dashes = newDashes;
			mask |= LINE_STYLE;
		} else {
			dashes = lineDashes;
		}
	} else {
		if (lineDashes != null && lineDashes.length > 0) {
			mask |= LINE_STYLE;
		} else {
			dashes = lineDashes;
		}
	}
	float dashOffset = attributes.dashOffset;
	if (dashOffset != data.lineDashesOffset) {
		mask |= LINE_STYLE;
	}
	float miterLimit = attributes.miterLimit;
	if (miterLimit != data.lineMiterLimit) {
		mask |= LINE_MITERLIMIT;
	}
	initGdip();
	if (mask == 0) return;
	data.lineWidth = lineWidth;
	data.lineStyle = lineStyle;
	data.lineCap = cap;
	data.lineJoin = join;
	data.lineDashes = dashes;
	data.lineDashesOffset = dashOffset;
	data.lineMiterLimit = miterLimit;
	data.state &= ~mask;
}

/** 
 * Sets the receiver's line cap style to the argument, which must be one
 * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>,
 * or <code>SWT.CAP_SQUARE</code>.
 *
 * @param cap the cap style to be used for drawing lines
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public void setLineCap(int cap) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.lineCap == cap) return;
	switch (cap) {
		case SWT.CAP_ROUND:
		case SWT.CAP_FLAT:
		case SWT.CAP_SQUARE:
			break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	data.lineCap = cap;
	data.state &= ~LINE_CAP;
}

/** 
 * Sets the receiver's line dash style to the argument. The default
 * value is <code>null</code>. If the argument is not <code>null</code>,
 * the receiver's line style is set to <code>SWT.LINE_CUSTOM</code>, otherwise
 * it is set to <code>SWT.LINE_SOLID</code>.
 *
 * @param dashes the dash style to be used for drawing lines
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0</li>
 * </ul> 
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public void setLineDash(int[] dashes) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	float[] lineDashes = data.lineDashes;
	if (dashes != null && dashes.length > 0) {
		boolean changed = data.lineStyle != SWT.LINE_CUSTOM || lineDashes == null || lineDashes.length != dashes.length;
		for (int i = 0; i < dashes.length; i++) {
			int dash = dashes[i];
			if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
			if (!changed && lineDashes[i] != dash) changed = true;
		}
		if (!changed) return;
		data.lineDashes = new float[dashes.length];
		for (int i = 0; i < dashes.length; i++) {
			data.lineDashes[i] = dashes[i];
		}
		data.lineStyle = SWT.LINE_CUSTOM;
	} else {
		if (data.lineStyle == SWT.LINE_SOLID && (lineDashes == null || lineDashes.length == 0)) return;
		data.lineDashes = null;
		data.lineStyle = SWT.LINE_SOLID;
	}
	data.state &= ~LINE_STYLE;
}

/** 
 * Sets the receiver's line join style to the argument, which must be one
 * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>,
 * or <code>SWT.JOIN_BEVEL</code>.
 *
 * @param join the join style to be used for drawing lines
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @since 3.1 
 */
public void setLineJoin(int join) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.lineJoin == join) return;
	switch (join) {
		case SWT.JOIN_MITER:
		case SWT.JOIN_ROUND:
		case SWT.JOIN_BEVEL:
			break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	data.lineJoin = join;
	data.state &= ~LINE_JOIN;
}

/** 
 * Sets the receiver's line style to the argument, which must be one
 * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>,
 * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or
 * <code>SWT.LINE_DASHDOTDOT</code>.
 *
 * @param lineStyle the style to be used for drawing lines
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setLineStyle(int lineStyle) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.lineStyle == lineStyle) return;
	switch (lineStyle) {
		case SWT.LINE_SOLID:
		case SWT.LINE_DASH:
		case SWT.LINE_DOT:
		case SWT.LINE_DASHDOT:
		case SWT.LINE_DASHDOTDOT:
			break;
		case SWT.LINE_CUSTOM:
			if (data.lineDashes == null) lineStyle = SWT.LINE_SOLID;
			break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	data.lineStyle = lineStyle;
	data.state &= ~LINE_STYLE;
}

/** 
 * Sets the width that will be used when drawing lines
 * for all of the figure drawing operations (that is,
 * <code>drawLine</code>, <code>drawRectangle</code>, 
 * <code>drawPolyline</code>, and so forth.
 * <p>
 * Note that line width of zero is used as a hint to
 * indicate that the fastest possible line drawing
 * algorithms should be used. This means that the
 * output may be different from line width one.
 * </p>
 *
 * @param lineWidth the width of a line
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public void setLineWidth(int lineWidth) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.lineWidth == lineWidth) return;
	data.lineWidth = lineWidth;
	data.state &= ~(LINE_WIDTH | DRAW_OFFSET);
}

/** 
 * If the argument is <code>true</code>, puts the receiver
 * in a drawing mode where the resulting color in the destination
 * is the <em>exclusive or</em> of the color values in the source
 * and the destination, and if the argument is <code>false</code>,
 * puts the receiver in a drawing mode where the destination color
 * is replaced with the source color value.
 * <p>
 * Note that this mode in fundamentally unsupportable on certain
 * platforms, notably Carbon (Mac OS X). Clients that want their
 * code to run on all platforms need to avoid this method.
 * </p>
 *
 * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used
 *
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 * 
 * @deprecated this functionality is not supported on some platforms
 */
@Deprecated
public void setXORMode(boolean xor) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	OS.SetROP2(handle, xor ? OS.R2_XORPEN : OS.R2_COPYPEN);
}

/**
 * Sets the receiver's text anti-aliasing value to the parameter, 
 * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code>
 * or <code>SWT.ON</code>. Note that this controls anti-aliasing only
 * for all <em>text drawing</em> operations.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param antialias the anti-aliasing setting
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>,
 *                                 <code>SWT.OFF</code> or <code>SWT.ON</code></li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see #getAdvanced
 * @see #setAdvanced
 * @see #setAntialias
 * 
 * @since 3.1
 */
public void setTextAntialias(int antialias) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (data.gdipGraphics == 0 && antialias == SWT.DEFAULT) return;
	int textMode = 0;
	switch (antialias) {
		case SWT.DEFAULT:
			textMode = Gdip.TextRenderingHintSystemDefault;
			break;
		case SWT.OFF:
			textMode = Gdip.TextRenderingHintSingleBitPerPixelGridFit;
			break;
		case SWT.ON:
			int[] type = new int[1];
			OS.SystemParametersInfo(OS.SPI_GETFONTSMOOTHINGTYPE, 0, type, 0);
			if (type[0] == OS.FE_FONTSMOOTHINGCLEARTYPE) {
				textMode = Gdip.TextRenderingHintClearTypeGridFit;
			} else {
				textMode = Gdip.TextRenderingHintAntiAliasGridFit;
			}
			break;
		default:
			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	}
	initGdip();
	Gdip.Graphics_SetTextRenderingHint(data.gdipGraphics, textMode);
}

/**
 * Sets the transform that is currently being used by the receiver. If
 * the argument is <code>null</code>, the current transform is set to
 * the identity transform.
 * <p>
 * This operation requires the operating system's advanced
 * graphics subsystem which may not be available on some
 * platforms.
 * </p>
 * 
 * @param transform the transform to set
 * 
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li>
 * </ul>
 * 
 * @see Transform
 * @see #getAdvanced
 * @see #setAdvanced
 * 
 * @since 3.1
 */
public void setTransform(Transform transform) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (data.gdipGraphics == 0 && transform == null) return;
	initGdip();
	long /*int*/ identity = identity();
	if (transform != null) {
		 Gdip.Matrix_Multiply(identity, transform.handle, Gdip.MatrixOrderPrepend);
	}
	Gdip.Graphics_SetTransform(data.gdipGraphics, identity);
	Gdip.Matrix_delete(identity);
	data.state &= ~DRAW_OFFSET;
}

/**
 * Returns the extent of the given string. No tab
 * expansion or carriage return processing will be performed.
 * <p>
 * The <em>extent</em> of a string is the width and height of
 * the rectangular area it would cover if drawn in a particular
 * font (in this case, the current font in the receiver).
 * </p>
 *
 * @param string the string to measure
 * @return a point containing the extent of the string
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Point stringExtent(String string) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	checkGC(FONT);
	int length = string.length();
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Point size = new Point(0, 0);
		drawText(gdipGraphics, string, 0, 0, 0, size);
		return size;
	}
	SIZE size = new SIZE();
	if (length == 0) {
//		OS.GetTextExtentPoint32(handle, SPACE, SPACE.length(), size);
		OS.GetTextExtentPoint32W(handle, new char[]{' '}, 1, size);
		return new Point(0, size.cy);
	} else {
//		TCHAR buffer = new TCHAR (getCodePage(), string, false);
		char[] buffer = new char [length];
		string.getChars(0, length, buffer, 0);
		OS.GetTextExtentPoint32W(handle, buffer, length, size);
		return new Point(size.cx, size.cy);
	}
}

/**
 * Returns the extent of the given string. Tab expansion and
 * carriage return processing are performed.
 * <p>
 * The <em>extent</em> of a string is the width and height of
 * the rectangular area it would cover if drawn in a particular
 * font (in this case, the current font in the receiver).
 * </p>
 *
 * @param string the string to measure
 * @return a point containing the extent of the string
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Point textExtent(String string) {
	return textExtent(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB);
}

/**
 * Returns the extent of the given string. Tab expansion, line
 * delimiter and mnemonic processing are performed according to
 * the specified flags, which can be a combination of:
 * <dl>
 * <dt><b>DRAW_DELIMITER</b></dt>
 * <dd>draw multiple lines</dd>
 * <dt><b>DRAW_TAB</b></dt>
 * <dd>expand tabs</dd>
 * <dt><b>DRAW_MNEMONIC</b></dt>
 * <dd>underline the mnemonic character</dd>
 * <dt><b>DRAW_TRANSPARENT</b></dt>
 * <dd>transparent background</dd>
 * </dl>
 * <p>
 * The <em>extent</em> of a string is the width and height of
 * the rectangular area it would cover if drawn in a particular
 * font (in this case, the current font in the receiver).
 * </p>
 *
 * @param string the string to measure
 * @param flags the flags specifying how to process the text
 * @return a point containing the extent of the string
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
 * </ul>
 */
public Point textExtent(String string, int flags) {
	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
	if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	checkGC(FONT);
	long /*int*/ gdipGraphics = data.gdipGraphics;
	if (gdipGraphics != 0) {
		Point size = new Point(0, 0);
		drawText(gdipGraphics, string, 0, 0, flags, size);
		return size;
	}
	if (string.length () == 0) {
		SIZE size = new SIZE();
//		OS.GetTextExtentPoint32(handle, SPACE, SPACE.length(), size);
		OS.GetTextExtentPoint32W(handle, new char [] {' '}, 1, size);
		return new Point(0, size.cy);
	}
	RECT rect = new RECT();
	TCHAR buffer = new TCHAR(getCodePage(), string, false);
	int uFormat = OS.DT_LEFT | OS.DT_CALCRECT;
	if ((flags & SWT.DRAW_DELIMITER) == 0) uFormat |= OS.DT_SINGLELINE;
	if ((flags & SWT.DRAW_TAB) != 0) uFormat |= OS.DT_EXPANDTABS;
	if ((flags & SWT.DRAW_MNEMONIC) == 0) uFormat |= OS.DT_NOPREFIX;
	OS.DrawText(handle, buffer, buffer.length(), rect, uFormat);
	return new Point(rect.right, rect.bottom);
}

/**
 * Returns a string containing a concise, human-readable
 * description of the receiver.
 *
 * @return a string representation of the receiver
 */
@Override
public String toString () {
	if (isDisposed()) return "GC {*DISPOSED*}";
	return "GC {" + handle + "}";
}

/**	 
 * Invokes platform specific functionality to allocate a new graphics context.
 * <p>
 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
 * API for <code>GC</code>. It is marked public only so that it
 * can be shared within the packages provided by SWT. It is not
 * available on all platforms, and should never be called from
 * application code.
 * </p>
 *
 * @param drawable the Drawable for the receiver.
 * @param data the data for the receiver.
 *
 * @return a new <code>GC</code>
 * 
 * @noreference This method is not intended to be referenced by clients.
 */
public static GC win32_new(Drawable drawable, GCData data) {
	GC gc = new GC();
	long /*int*/ hDC = drawable.internal_new_GC(data);
	gc.device = data.device;
	gc.init(drawable, data, hDC);
	return gc;
}

/**	 
 * Invokes platform specific functionality to wrap a graphics context.
 * <p>
 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
 * API for <code>GC</code>. It is marked public only so that it
 * can be shared within the packages provided by SWT. It is not
 * available on all platforms, and should never be called from
 * application code.
 * </p>
 *
 * @param hDC the Windows HDC.
 * @param data the data for the receiver.
 *
 * @return a new <code>GC</code>
 * 
 * @noreference This method is not intended to be referenced by clients.
 */
public static GC win32_new(long /*int*/ hDC, GCData data) {
	GC gc = new GC();
	gc.device = data.device;
	data.style |= SWT.LEFT_TO_RIGHT;
	if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (4, 10)) {
		int flags = OS.GetLayout (hDC);
		if ((flags & OS.LAYOUT_RTL) != 0) {
			data.style |= SWT.RIGHT_TO_LEFT | SWT.MIRRORED;
		}
	}
	gc.init(null, data, hDC);
	return gc;
}

}