bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/ToolTip.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2009 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.widgets;


 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.internal.carbon.HMHelpContentRec;
 import org.eclipse.swt.internal.carbon.OS;
 import org.eclipse.swt.events.*;

 /**
  * Instances of this class represent popup windows that are used
  * to inform or warn the user.
  * <p>
  * <dl>
  * <dt><b>Styles:</b></dt>
  * <dd>BALLOON, ICON_ERROR, ICON_INFORMATION, ICON_WARNING</dd>
  * <dt><b>Events:</b></dt>
  * <dd>Selection</dd>
  * </dl>
  * </p><p>
  * Note: Only one of the styles ICON_ERROR, ICON_INFORMATION,
  * and ICON_WARNING may be specified.
  * </p><p>
  * IMPORTANT: This class is <em>not</em> intended to be subclassed.
  * </p>
  *
  * @see <a href="http://www.eclipse.org/swt/snippets/#tooltips">Tool Tips snippets</a>
  * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
  * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
  *
  * @since 3.2
  * @noextend This class is not intended to be subclassed by clients.
  */
 public class ToolTip extends Widget {
 	Shell parent, tip;
 	int x, y;
 	boolean spikeAbove, autohide;
 	TextLayout layoutText, layoutMessage;
 	String text, message;
 	TrayItem item;
 	Region region;
 	Font boldFont;
 	Runnable runnable;

 	int helpString;
 	static final int BORDER = 5;
 	static final int PADDING = 5;
 	static final int INSET = 4;
 	static final int TIP_HEIGHT = 20;
 	static final int IMAGE_SIZE = 16;
 	static final int DELAY = 10000;

 /**
  * Constructs a new instance of this class given its parent
  * and a style value describing its behavior and appearance.
  * <p>
  * The style value is either one of the style constants defined in
  * class <code>SWT</code> which is applicable to instances of this
  * class, or must be built by <em>bitwise OR</em>'ing together
  * (that is, using the <code>int</code> "|" operator) two or more
  * of those <code>SWT</code> style constants. The class description
  * lists the style constants that are applicable to the class.
  * Style bits are also inherited from superclasses.
  * </p>
  *
  * @param parent a composite control which will be the parent of the new instance (cannot be null)
  * @param style the style of control to construct
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
  *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
  * </ul>
  *
  * @see SWT#BALLOON
  * @see SWT#ICON_ERROR
  * @see SWT#ICON_INFORMATION
  * @see SWT#ICON_WARNING
  * @see Widget#checkSubclass
  * @see Widget#getStyle
  */
 public ToolTip (Shell parent, int style) {
 	super (parent, checkStyle (style));
 	this.parent = parent;
 	createWidget ();
 	parent.addToolTip (this);
 }

 static int checkStyle (int style) {
 	int mask = SWT.ICON_ERROR | SWT.ICON_INFORMATION | SWT.ICON_WARNING;
 	if ((style & mask) == 0) return style;
 	return checkBits (style, SWT.ICON_INFORMATION, SWT.ICON_WARNING, SWT.ICON_ERROR, 0, 0, 0);
 }

 /**
  * Adds the listener to the collection of listeners who will
  * be notified when the receiver is selected by the user, by sending
  * it one of the messages defined in the <code>SelectionListener</code>
  * interface.
  * <p>
  * <code>widgetSelected</code> is called when the receiver is selected.
  * <code>widgetDefaultSelected</code> is not called.
  * </p>
  *
  * @param listener the listener which should be notified when the receiver is selected by the user
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see SelectionListener
  * @see #removeSelectionListener
  * @see SelectionEvent
  */
 public void addSelectionListener (SelectionListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Selection,typedListener);
 	addListener (SWT.DefaultSelection,typedListener);
 }

 void configure () {
 	Display display = parent.getDisplay ();
 	int x = this.x;
 	int y = this.y;
 	if (x == -1 || y == -1) {
 		Point point;
 		if (item != null) {
 			point = item.getLocation ();
 		} else {
 			point = display.getCursorLocation ();
 		}
 		x = point.x;
 		y = point.y;
 	}
 	Monitor monitor = parent.getMonitor ();
 	Rectangle dest = monitor.getBounds ();
 	Point size = getSize (dest.width / 4);
 	int w = size.x;
 	int h = size.y;
 	int t = (style & SWT.BALLOON) != 0 ? TIP_HEIGHT : 0;
 	int i = (style & SWT.BALLOON) != 0 ? 17 : 0;
 	tip.setSize (w, h + t);
 	int [] polyline;
 	spikeAbove = dest.height >= y + size.y + t;
 	if (dest.width >= x + size.x) {
 		if (dest.height >= y + size.y + t) {
 			polyline = new int [] {
 				0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t,
 				16, t, 16, 0, 35, t,
 				w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t,
 				w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t,
 				5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t,
 				0, 5+t};
 			tip.setLocation (Math.max (0, x - i), y);
 		} else {
 			polyline = new int [] {
 				0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0,
 				w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5,
 				w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h,
 				35, h, 16, h+t, 16, h,
 				5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5,
 				0, 5};
 			tip.setLocation (Math.max (0, x - i), y - size.y - t);
 		}
 	} else {
 		if (dest.height >= y + size.y + t) {
 			polyline = new int [] {
 				0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t,
 				w-35, t, w-16, 0, w-16, t,
 				w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t,
 				w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t,
 				5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t,
 				0, 5+t};
 			tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y);
 		} else {
 			polyline = new int [] {
 				0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0,
 				w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5,
 				w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h,
 				w-16, h, w-16, h+t, w-35, h,
 				5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5,
 				0, 5};
 			tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y - size.y - t);
 		}
 	}
 	if ((style & SWT.BALLOON) != 0) {
 		if (region != null) region.dispose ();
 		region = new Region (display);
 		region.add (polyline);
 		tip.setRegion (region);
 	}
 }

 void createWidget () {
 	super.createWidget ();
 	this.autohide = true;
 	x = y = -1;
 	text = "";
 	message = "";
 }


 void disposeTip () {
 	if (tip != null) tip.dispose ();
 	tip = null;
 	if (region != null) region.dispose ();
 	region = null;
 	if (layoutText != null) layoutText.dispose ();
 	layoutText = null;
 	if (layoutMessage != null) layoutMessage.dispose ();
 	layoutMessage = null;
 	if (boldFont != null) boldFont.dispose ();
 	boldFont = null;
 }

 /**
  * Returns <code>true</code> if the receiver is automatically
  * hidden by the platform, and <code>false</code> otherwise.
  *
  * @return the receiver's auto hide state
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  */
 public boolean getAutoHide () {
 	checkWidget ();
 	return autohide;
 }

 /**
  * Returns the receiver's message, which will be an empty
  * string if it has never been set.
  *
  * @return the receiver's message
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public String getMessage () {
 	checkWidget ();
 	return message;
 }

 /**
  * Returns the receiver's parent, which must be a <code>Shell</code>.
  *
  * @return the receiver's parent
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public Shell getParent () {
 	checkWidget ();
 	return parent;
 }

 Point getSize (int maxWidth) {
 	int textWidth = 0, messageWidth = 0;
 	if (layoutText != null) {
 		layoutText.setWidth (-1);
 		textWidth = layoutText.getBounds ().width;
 	}
 	if (layoutMessage != null) {
 		layoutMessage.setWidth (-1);
 		messageWidth = layoutMessage.getBounds ().width;
 	}
 	int messageTrim = 2 * INSET + 2 * BORDER + 2 * PADDING;
 	boolean hasImage = 	layoutText != null && (style & SWT.BALLOON) != 0 && (style & (SWT.ICON_ERROR | SWT.ICON_INFORMATION | SWT.ICON_WARNING)) != 0;
 	int textTrim = messageTrim + (hasImage ? IMAGE_SIZE : 0);
 	int width = Math.min (maxWidth, Math.max (textWidth + textTrim, messageWidth + messageTrim));
 	int textHeight = 0, messageHeight = 0;
 	if (layoutText != null) {
 		layoutText.setWidth (maxWidth - textTrim);
 		textHeight = layoutText.getBounds ().height;
 	}
 	if (layoutMessage != null) {
 		layoutMessage.setWidth (maxWidth - messageTrim);
 		messageHeight = layoutMessage.getBounds ().height;
 	}
 	int height = 2 * BORDER + 2 * PADDING + messageHeight;
 	if (layoutText != null) height += Math.max (IMAGE_SIZE, textHeight) + 2 * PADDING;
 	return new Point (width, height);
 }

 /**
  * Returns the receiver's text, which will be an empty
  * string if it has never been set.
  *
  * @return the receiver's text
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public String getText () {
 	checkWidget ();
 	return text;
 }

 /**
  * Returns <code>true</code> if the receiver is visible, and
  * <code>false</code> otherwise.
  * <p>
  * If one of the receiver's ancestors is not visible or some
  * other condition makes the receiver not visible, this method
  * may still indicate that it is considered visible even though
  * it may not actually be showing.
  * </p>
  *
  * @return the receiver's visibility state
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public boolean getVisible () {
 	checkWidget ();
 	if (tip != null) return	tip.getVisible ();
 	if (display.helpWidget == this) {
 		int window = OS.FrontWindow ();
 		int [] windowClass = new int [1];
 		OS.GetWindowClass (window, windowClass);
 		return windowClass [0] == OS.kHelpWindowClass;
 	}
 	return false;
 }

 /**
  * Returns <code>true</code> if the receiver is visible and all
  * of the receiver's ancestors are visible and <code>false</code>
  * otherwise.
  *
  * @return the receiver's visibility state
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see #getVisible
  */
 public boolean isVisible () {
 	checkWidget ();
 	return getVisible ();
 }

 void onMouseDown (Event event) {
 	sendSelectionEvent (SWT.Selection, null, true);
 	setVisible (false);
 }

 void onPaint (Event event) {
 	GC gc = event.gc;
 	int x = BORDER + PADDING;
 	int y = BORDER + PADDING;
 	if ((style & SWT.BALLOON) != 0 && spikeAbove) y += TIP_HEIGHT;
 	if (layoutText != null) {
 		int id = style & (SWT.ICON_ERROR | SWT.ICON_INFORMATION | SWT.ICON_WARNING);
 		if ((style & SWT.BALLOON) != 0 && id != 0) {
 			Display display = getDisplay ();
 			Image image = display.getSystemImage (id);
 			Rectangle rect = image.getBounds ();
 			gc.drawImage (image, 0, 0, rect.width, rect.height, x, y, IMAGE_SIZE, IMAGE_SIZE);
 			x += IMAGE_SIZE;
 		}
 		x += INSET;
 		layoutText.draw (gc, x, y);
 		y += 2 * PADDING + Math.max (IMAGE_SIZE, layoutText.getBounds ().height);
 	}
 	if (layoutMessage != null) {
 		x = BORDER + PADDING + INSET;
 		layoutMessage.draw (gc, x, y);
 	}
 }

 void releaseWidget () {
 	super.releaseWidget ();
 	if (parent != null) parent.removeTooTip (this);
 	if (runnable != null) {
 		Display display = getDisplay ();
 		display.timerExec (-1, runnable);
 	}
 	runnable = null;
 	disposeTip ();
 	if (helpString != 0) OS.CFRelease (helpString);
 	helpString = 0;
 }

 /**
  * Removes the listener from the collection of listeners who will
  * be notified when the receiver is selected by the user.
  *
  * @param listener the listener which should no longer be notified
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see SelectionListener
  * @see #addSelectionListener
  */
 public void removeSelectionListener (SelectionListener listener) {
 	checkWidget();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Selection, listener);
 	eventTable.unhook (SWT.DefaultSelection,listener);
 }

 /**
  * Makes the receiver hide automatically when <code>true</code>,
  * and remain visible when <code>false</code>.
  *
  * @param autoHide the auto hide state
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
  * @see #getVisible
  * @see #setVisible
  */
 public void setAutoHide (boolean autohide) {
 	checkWidget ();
 	this.autohide = autohide;
 	//TODO - update when visible
 }

 /**
  * Sets the location of the receiver, which must be a tooltip,
  * to the point specified by the arguments which are relative
  * to the display.
  * <p>
  * Note that this is different from most widgets where the
  * location of the widget is relative to the parent.
  * </p>
  *
  * @param x the new x coordinate for the receiver
  * @param y the new y coordinate for the receiver
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setLocation (int x, int y) {
 	checkWidget ();
 	if (this.x == x && this.y == y) return;
 	this.x = x;
 	this.y = y;
 	if (tip != null && tip.getVisible ()) configure ();
 }

 /**
  * Sets the location of the receiver, which must be a tooltip,
  * to the point specified by the argument which is relative
  * to the display.
  * <p>
  * Note that this is different from most widgets where the
  * location of the widget is relative to the parent.
  * </p><p>
  * Note that the platform window manager ultimately has control
  * over the location of tooltips.
  * </p>
  *
  * @param location the new location for the receiver
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the point is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setLocation (Point location) {
 	checkWidget ();
 	if (location == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	setLocation (location.x, location.y);
 }

 /**
  * Sets the receiver's message.
  *
  * @param string the new message
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the text is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setMessage (String string) {
 	checkWidget ();
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	message = string;
 	if (tip != null) {
 		layoutMessage.setText (string);
 		if (tip.getVisible ()) configure ();
 	}
 }

 /**
  * Sets the receiver's text.
  *
  * @param string the new text
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT - if the text is null</li>
  * </ul>
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setText (String string) {
 	checkWidget ();
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	text = string;
 	if (tip != null) {
 		layoutText.setText (string);
 		TextStyle style = new TextStyle (boldFont, null, null);
 		layoutText.setStyle (style, 0, string.length ());
 		if (tip.getVisible ()) configure ();
 	}
 }

 /**
  * Marks the receiver as visible if the argument is <code>true</code>,
  * and marks it invisible otherwise.
  * <p>
  * If one of the receiver's ancestors is not visible or some
  * other condition makes the receiver not visible, marking
  * it visible may not actually cause it to be displayed.
  * </p>
  *
  * @param visible the new visibility state
  *
  * @exception SWTException <ul>
  *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
 public void setVisible (boolean visible) {
 	checkWidget ();
 	if (helpString != 0) OS.CFRelease (helpString);
 	helpString = 0;
 	if (runnable != null) display.timerExec (-1, runnable);
 	runnable = null;
 	if (visible) {
 		OS.HMHideTag ();
 		display.helpWidget = this;
 		if (!autohide || (style & SWT.BALLOON) != 0) {
 			// Show tip
 			if (tip == null) {
 				tip = new Shell (parent, SWT.ON_TOP | SWT.NO_TRIM | SWT.TOOL);
 				Color background = display.getSystemColor (SWT.COLOR_INFO_BACKGROUND);
 				tip.setBackground (background);
 				Listener listener = new Listener () {
 					public void handleEvent (Event event) {
 						switch (event.type) {
 							case SWT.Paint: onPaint (event); break;
 							case SWT.MouseDown: onMouseDown (event); break;
 						}
 					}
 				};
 				tip.addListener (SWT.Paint, listener);
 				tip.addListener (SWT.MouseDown, listener);

 				layoutText = new TextLayout (display);
 				layoutText.setText (text);
 				Font font = display.getSystemFont ();
 				FontData data = font.getFontData () [0];
 				boldFont = new Font (display, data.getName (), data.getHeight (), SWT.BOLD);
 				TextStyle style = new TextStyle (boldFont, null, null);
 				layoutText.setStyle (style, 0, text.length ());
 				layoutMessage = new TextLayout (display);
 				layoutMessage.setText(message);
 			}

 			configure ();
 			tip.setVisible (true);
 			if (autohide) {
 				runnable = new Runnable () {
 					public void run () {
 						if (!isDisposed ()) setVisible (false);
 					}
 				};
 				display.timerExec(DELAY, runnable);
 			}
 		} else {
 			// Show HMTag
 			if (tip != null) disposeTip ();
 			if (x == -1 || y == -1) {
 				Point point;
 				if (item != null) {
 					point = item.getLocation ();
 					x = point.x;
 					y = point.y;
 				} else {
 					org.eclipse.swt.internal.carbon.Point pt = new org.eclipse.swt.internal.carbon.Point ();
 					OS.GetGlobalMouse (pt);
 					x = pt.h;
 					y = pt.v;
 				}
 			}
 			StringBuffer string = new StringBuffer (text);
 			if (text.length () > 0) string.append ("\n\n");
 			string.append (message);
 			char [] buffer = new char [string.length ()];
 			string.getChars (0, buffer.length, buffer, 0);
 			helpString = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length);
 			HMHelpContentRec helpContent = new HMHelpContentRec ();
 			helpContent.tagSide = (short) OS.kHMAbsoluteCenterAligned;
 			helpContent.absHotRect_left = (short)x;
 			helpContent.absHotRect_top = (short)y;
 			helpContent.absHotRect_right = (short)(x + 1);
 			helpContent.absHotRect_bottom = (short) (y + 1);
 			helpContent.content0_contentType = OS.kHMCFStringContent;
 			helpContent.content0_tagCFString = helpString;
 			helpContent.content1_contentType = OS.kHMCFStringContent;
 			helpContent.content1_tagCFString = helpString;
 			OS.HMDisplayTag(helpContent);
 		}
 	} else {
 		if (display.helpWidget == this) {
 			display.helpWidget = null;
 			OS.HMHideTag ();
 			if (tip != null) tip.setVisible (false);
 		}
 	}
 }

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2009 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.widgets;


	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.internal.carbon.HMHelpContentRec;
	import org.eclipse.swt.internal.carbon.OS;
	import org.eclipse.swt.events.*;

	/**
	* Instances of this class represent popup windows that are used
	* to inform or warn the user.
	* <p>
	* <dl>
	* <dt><b>Styles:</b></dt>
	* <dd>BALLOON, ICON_ERROR, ICON_INFORMATION, ICON_WARNING</dd>
	* <dt><b>Events:</b></dt>
	* <dd>Selection</dd>
	* </dl>
	* </p><p>
	* Note: Only one of the styles ICON_ERROR, ICON_INFORMATION,
	* and ICON_WARNING may be specified.
	* </p><p>
	* IMPORTANT: This class is <em>not</em> intended to be subclassed.
	* </p>
	*
	* @see <a href="http://www.eclipse.org/swt/snippets/#tooltips">Tool Tips snippets</a>
	* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
	* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
	*
	* @since 3.2
	* @noextend This class is not intended to be subclassed by clients.
	*/
	public class ToolTip extends Widget {
	Shell parent, tip;
	int x, y;
	boolean spikeAbove, autohide;
	TextLayout layoutText, layoutMessage;
	String text, message;
	TrayItem item;
	Region region;
	Font boldFont;
	Runnable runnable;

	int helpString;
	static final int BORDER = 5;
	static final int PADDING = 5;
	static final int INSET = 4;
	static final int TIP_HEIGHT = 20;
	static final int IMAGE_SIZE = 16;
	static final int DELAY = 10000;

	/**
	* Constructs a new instance of this class given its parent
	* and a style value describing its behavior and appearance.
	* <p>
	* The style value is either one of the style constants defined in
	* class <code>SWT</code> which is applicable to instances of this
	* class, or must be built by <em>bitwise OR</em>'ing together
	* (that is, using the <code>int</code> "\|" operator) two or more
	* of those <code>SWT</code> style constants. The class description
	* lists the style constants that are applicable to the class.
	* Style bits are also inherited from superclasses.
	* </p>
	*
	* @param parent a composite control which will be the parent of the new instance (cannot be null)
	* @param style the style of control to construct
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
	* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
	* </ul>
	*
	* @see SWT#BALLOON
	* @see SWT#ICON_ERROR
	* @see SWT#ICON_INFORMATION
	* @see SWT#ICON_WARNING
	* @see Widget#checkSubclass
	* @see Widget#getStyle
	*/
	public ToolTip (Shell parent, int style) {
	super (parent, checkStyle (style));
	this.parent = parent;
	createWidget ();
	parent.addToolTip (this);
	}

	static int checkStyle (int style) {
	int mask = SWT.ICON_ERROR \| SWT.ICON_INFORMATION \| SWT.ICON_WARNING;
	if ((style & mask) == 0) return style;
	return checkBits (style, SWT.ICON_INFORMATION, SWT.ICON_WARNING, SWT.ICON_ERROR, 0, 0, 0);
	}

	/**
	* Adds the listener to the collection of listeners who will
	* be notified when the receiver is selected by the user, by sending
	* it one of the messages defined in the <code>SelectionListener</code>
	* interface.
	* <p>
	* <code>widgetSelected</code> is called when the receiver is selected.
	* <code>widgetDefaultSelected</code> is not called.
	* </p>
	*
	* @param listener the listener which should be notified when the receiver is selected by the user
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see SelectionListener
	* @see #removeSelectionListener
	* @see SelectionEvent
	*/
	public void addSelectionListener (SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
	}

	void configure () {
	Display display = parent.getDisplay ();
	int x = this.x;
	int y = this.y;
	if (x == -1 \|\| y == -1) {
	Point point;
	if (item != null) {
	point = item.getLocation ();
	} else {
	point = display.getCursorLocation ();
	}
	x = point.x;
	y = point.y;
	}
	Monitor monitor = parent.getMonitor ();
	Rectangle dest = monitor.getBounds ();
	Point size = getSize (dest.width / 4);
	int w = size.x;
	int h = size.y;
	int t = (style & SWT.BALLOON) != 0 ? TIP_HEIGHT : 0;
	int i = (style & SWT.BALLOON) != 0 ? 17 : 0;
	tip.setSize (w, h + t);
	int [] polyline;
	spikeAbove = dest.height >= y + size.y + t;
	if (dest.width >= x + size.x) {
	if (dest.height >= y + size.y + t) {
	polyline = new int [] {
	0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t,
	16, t, 16, 0, 35, t,
	w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t,
	w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t,
	5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t,
	0, 5+t};
	tip.setLocation (Math.max (0, x - i), y);
	} else {
	polyline = new int [] {
	0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0,
	w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5,
	w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h,
	35, h, 16, h+t, 16, h,
	5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5,
	0, 5};
	tip.setLocation (Math.max (0, x - i), y - size.y - t);
	}
	} else {
	if (dest.height >= y + size.y + t) {
	polyline = new int [] {
	0, 5+t, 1, 5+t, 1, 3+t, 3, 1+t, 5, 1+t, 5, t,
	w-35, t, w-16, 0, w-16, t,
	w-5, t, w-5, 1+t, w-3, 1+t, w-1, 3+t, w-1, 5+t, w, 5+t,
	w, h-5+t, w-1, h-5+t, w-1, h-3+t, w-2, h-3+t, w-2, h-2+t, w-3, h-2+t, w-3, h-1+t, w-5, h-1+t, w-5, h+t,
	5, h+t, 5, h-1+t, 3, h-1+t, 3, h-2+t, 2, h-2+t, 2, h-3+t, 1, h-3+t, 1, h-5+t, 0, h-5+t,
	0, 5+t};
	tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y);
	} else {
	polyline = new int [] {
	0, 5, 1, 5, 1, 3, 3, 1, 5, 1, 5, 0,
	w-5, 0, w-5, 1, w-3, 1, w-1, 3, w-1, 5, w, 5,
	w, h-5, w-1, h-5, w-1, h-3, w-2, h-3, w-2, h-2, w-3, h-2, w-3, h-1, w-5, h-1, w-5, h,
	w-16, h, w-16, h+t, w-35, h,
	5, h, 5, h-1, 3, h-1, 3, h-2, 2, h-2, 2, h-3, 1, h-3, 1, h-5, 0, h-5,
	0, 5};
	tip.setLocation (Math.min (dest.width - size.x, x - size.x + i), y - size.y - t);
	}
	}
	if ((style & SWT.BALLOON) != 0) {
	if (region != null) region.dispose ();
	region = new Region (display);
	region.add (polyline);
	tip.setRegion (region);
	}
	}

	void createWidget () {
	super.createWidget ();
	this.autohide = true;
	x = y = -1;
	text = "";
	message = "";
	}


	void disposeTip () {
	if (tip != null) tip.dispose ();
	tip = null;
	if (region != null) region.dispose ();
	region = null;
	if (layoutText != null) layoutText.dispose ();
	layoutText = null;
	if (layoutMessage != null) layoutMessage.dispose ();
	layoutMessage = null;
	if (boldFont != null) boldFont.dispose ();
	boldFont = null;
	}

	/**
	* Returns <code>true</code> if the receiver is automatically
	* hidden by the platform, and <code>false</code> otherwise.
	*
	* @return the receiver's auto hide state
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	*/
	public boolean getAutoHide () {
	checkWidget ();
	return autohide;
	}

	/**
	* Returns the receiver's message, which will be an empty
	* string if it has never been set.
	*
	* @return the receiver's message
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public String getMessage () {
	checkWidget ();
	return message;
	}

	/**
	* Returns the receiver's parent, which must be a <code>Shell</code>.
	*
	* @return the receiver's parent
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public Shell getParent () {
	checkWidget ();
	return parent;
	}

	Point getSize (int maxWidth) {
	int textWidth = 0, messageWidth = 0;
	if (layoutText != null) {
	layoutText.setWidth (-1);
	textWidth = layoutText.getBounds ().width;
	}
	if (layoutMessage != null) {
	layoutMessage.setWidth (-1);
	messageWidth = layoutMessage.getBounds ().width;
	}
	int messageTrim = 2 * INSET + 2 * BORDER + 2 * PADDING;
	boolean hasImage = layoutText != null && (style & SWT.BALLOON) != 0 && (style & (SWT.ICON_ERROR \| SWT.ICON_INFORMATION \| SWT.ICON_WARNING)) != 0;
	int textTrim = messageTrim + (hasImage ? IMAGE_SIZE : 0);
	int width = Math.min (maxWidth, Math.max (textWidth + textTrim, messageWidth + messageTrim));
	int textHeight = 0, messageHeight = 0;
	if (layoutText != null) {
	layoutText.setWidth (maxWidth - textTrim);
	textHeight = layoutText.getBounds ().height;
	}
	if (layoutMessage != null) {
	layoutMessage.setWidth (maxWidth - messageTrim);
	messageHeight = layoutMessage.getBounds ().height;
	}
	int height = 2 * BORDER + 2 * PADDING + messageHeight;
	if (layoutText != null) height += Math.max (IMAGE_SIZE, textHeight) + 2 * PADDING;
	return new Point (width, height);
	}

	/**
	* Returns the receiver's text, which will be an empty
	* string if it has never been set.
	*
	* @return the receiver's text
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public String getText () {
	checkWidget ();
	return text;
	}

	/**
	* Returns <code>true</code> if the receiver is visible, and
	* <code>false</code> otherwise.
	* <p>
	* If one of the receiver's ancestors is not visible or some
	* other condition makes the receiver not visible, this method
	* may still indicate that it is considered visible even though
	* it may not actually be showing.
	* </p>
	*
	* @return the receiver's visibility state
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public boolean getVisible () {
	checkWidget ();
	if (tip != null) return tip.getVisible ();
	if (display.helpWidget == this) {
	int window = OS.FrontWindow ();
	int [] windowClass = new int [1];
	OS.GetWindowClass (window, windowClass);
	return windowClass [0] == OS.kHelpWindowClass;
	}
	return false;
	}

	/**
	* Returns <code>true</code> if the receiver is visible and all
	* of the receiver's ancestors are visible and <code>false</code>
	* otherwise.
	*
	* @return the receiver's visibility state
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see #getVisible
	*/
	public boolean isVisible () {
	checkWidget ();
	return getVisible ();
	}

	void onMouseDown (Event event) {
	sendSelectionEvent (SWT.Selection, null, true);
	setVisible (false);
	}

	void onPaint (Event event) {
	GC gc = event.gc;
	int x = BORDER + PADDING;
	int y = BORDER + PADDING;
	if ((style & SWT.BALLOON) != 0 && spikeAbove) y += TIP_HEIGHT;
	if (layoutText != null) {
	int id = style & (SWT.ICON_ERROR \| SWT.ICON_INFORMATION \| SWT.ICON_WARNING);
	if ((style & SWT.BALLOON) != 0 && id != 0) {
	Display display = getDisplay ();
	Image image = display.getSystemImage (id);
	Rectangle rect = image.getBounds ();
	gc.drawImage (image, 0, 0, rect.width, rect.height, x, y, IMAGE_SIZE, IMAGE_SIZE);
	x += IMAGE_SIZE;
	}
	x += INSET;
	layoutText.draw (gc, x, y);
	y += 2 * PADDING + Math.max (IMAGE_SIZE, layoutText.getBounds ().height);
	}
	if (layoutMessage != null) {
	x = BORDER + PADDING + INSET;
	layoutMessage.draw (gc, x, y);
	}
	}

	void releaseWidget () {
	super.releaseWidget ();
	if (parent != null) parent.removeTooTip (this);
	if (runnable != null) {
	Display display = getDisplay ();
	display.timerExec (-1, runnable);
	}
	runnable = null;
	disposeTip ();
	if (helpString != 0) OS.CFRelease (helpString);
	helpString = 0;
	}

	/**
	* Removes the listener from the collection of listeners who will
	* be notified when the receiver is selected by the user.
	*
	* @param listener the listener which should no longer be notified
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see SelectionListener
	* @see #addSelectionListener
	*/
	public void removeSelectionListener (SelectionListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);
	}

	/**
	* Makes the receiver hide automatically when <code>true</code>,
	* and remain visible when <code>false</code>.
	*
	* @param autoHide the auto hide state
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*
	* @see #getVisible
	* @see #setVisible
	*/
	public void setAutoHide (boolean autohide) {
	checkWidget ();
	this.autohide = autohide;
	//TODO - update when visible
	}

	/**
	* Sets the location of the receiver, which must be a tooltip,
	* to the point specified by the arguments which are relative
	* to the display.
	* <p>
	* Note that this is different from most widgets where the
	* location of the widget is relative to the parent.
	* </p>
	*
	* @param x the new x coordinate for the receiver
	* @param y the new y coordinate for the receiver
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setLocation (int x, int y) {
	checkWidget ();
	if (this.x == x && this.y == y) return;
	this.x = x;
	this.y = y;
	if (tip != null && tip.getVisible ()) configure ();
	}

	/**
	* Sets the location of the receiver, which must be a tooltip,
	* to the point specified by the argument which is relative
	* to the display.
	* <p>
	* Note that this is different from most widgets where the
	* location of the widget is relative to the parent.
	* </p><p>
	* Note that the platform window manager ultimately has control
	* over the location of tooltips.
	* </p>
	*
	* @param location the new location for the receiver
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setLocation (Point location) {
	checkWidget ();
	if (location == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	setLocation (location.x, location.y);
	}

	/**
	* Sets the receiver's message.
	*
	* @param string the new message
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the text is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setMessage (String string) {
	checkWidget ();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	message = string;
	if (tip != null) {
	layoutMessage.setText (string);
	if (tip.getVisible ()) configure ();
	}
	}

	/**
	* Sets the receiver's text.
	*
	* @param string the new text
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT - if the text is null</li>
	* </ul>
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setText (String string) {
	checkWidget ();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	text = string;
	if (tip != null) {
	layoutText.setText (string);
	TextStyle style = new TextStyle (boldFont, null, null);
	layoutText.setStyle (style, 0, string.length ());
	if (tip.getVisible ()) configure ();
	}
	}

	/**
	* Marks the receiver as visible if the argument is <code>true</code>,
	* and marks it invisible otherwise.
	* <p>
	* If one of the receiver's ancestors is not visible or some
	* other condition makes the receiver not visible, marking
	* it visible may not actually cause it to be displayed.
	* </p>
	*
	* @param visible the new visibility state
	*
	* @exception SWTException <ul>
	* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
	* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
	* </ul>
	*/
	public void setVisible (boolean visible) {
	checkWidget ();
	if (helpString != 0) OS.CFRelease (helpString);
	helpString = 0;
	if (runnable != null) display.timerExec (-1, runnable);
	runnable = null;
	if (visible) {
	OS.HMHideTag ();
	display.helpWidget = this;
	if (!autohide \|\| (style & SWT.BALLOON) != 0) {
	// Show tip
	if (tip == null) {
	tip = new Shell (parent, SWT.ON_TOP \| SWT.NO_TRIM \| SWT.TOOL);
	Color background = display.getSystemColor (SWT.COLOR_INFO_BACKGROUND);
	tip.setBackground (background);
	Listener listener = new Listener () {
	public void handleEvent (Event event) {
	switch (event.type) {
	case SWT.Paint: onPaint (event); break;
	case SWT.MouseDown: onMouseDown (event); break;
	}
	}
	};
	tip.addListener (SWT.Paint, listener);
	tip.addListener (SWT.MouseDown, listener);

	layoutText = new TextLayout (display);
	layoutText.setText (text);
	Font font = display.getSystemFont ();
	FontData data = font.getFontData () [0];
	boldFont = new Font (display, data.getName (), data.getHeight (), SWT.BOLD);
	TextStyle style = new TextStyle (boldFont, null, null);
	layoutText.setStyle (style, 0, text.length ());
	layoutMessage = new TextLayout (display);
	layoutMessage.setText(message);
	}

	configure ();
	tip.setVisible (true);
	if (autohide) {
	runnable = new Runnable () {
	public void run () {
	if (!isDisposed ()) setVisible (false);
	}
	};
	display.timerExec(DELAY, runnable);
	}
	} else {
	// Show HMTag
	if (tip != null) disposeTip ();
	if (x == -1 \|\| y == -1) {
	Point point;
	if (item != null) {
	point = item.getLocation ();
	x = point.x;
	y = point.y;
	} else {
	org.eclipse.swt.internal.carbon.Point pt = new org.eclipse.swt.internal.carbon.Point ();
	OS.GetGlobalMouse (pt);
	x = pt.h;
	y = pt.v;
	}
	}
	StringBuffer string = new StringBuffer (text);
	if (text.length () > 0) string.append ("\n\n");
	string.append (message);
	char [] buffer = new char [string.length ()];
	string.getChars (0, buffer.length, buffer, 0);
	helpString = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length);
	HMHelpContentRec helpContent = new HMHelpContentRec ();
	helpContent.tagSide = (short) OS.kHMAbsoluteCenterAligned;
	helpContent.absHotRect_left = (short)x;
	helpContent.absHotRect_top = (short)y;
	helpContent.absHotRect_right = (short)(x + 1);
	helpContent.absHotRect_bottom = (short) (y + 1);
	helpContent.content0_contentType = OS.kHMCFStringContent;
	helpContent.content0_tagCFString = helpString;
	helpContent.content1_contentType = OS.kHMCFStringContent;
	helpContent.content1_tagCFString = helpString;
	OS.HMDisplayTag(helpContent);
	}
	} else {
	if (display.helpWidget == this) {
	display.helpWidget = null;
	OS.HMHideTag ();
	if (tip != null) tip.setVisible (false);
	}
	}
	}

	}