| /******************************************************************************* |
| * 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.widgets; |
| |
| |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class provide an etched border |
| * with an optional title. |
| * <p> |
| * Shadow styles are hints and may not be honoured |
| * by the platform. To create a group with the |
| * default shadow style for the platform, do not |
| * specify a shadow style. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SHADOW_ETCHED_IN, SHADOW_ETCHED_OUT, SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the above styles 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/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Group extends Composite { |
| String text = ""; |
| static final int CLIENT_INSET = 3; |
| static final long /*int*/ GroupProc; |
| static final TCHAR GroupClass = new TCHAR (0, OS.IsWinCE ? "BUTTON" : "SWT_GROUP", true); |
| static { |
| /* |
| * Feature in Windows. The group box window class |
| * uses the CS_HREDRAW and CS_VREDRAW style bits to |
| * force a full redraw of the control and all children |
| * when resized. This causes flashing. The fix is to |
| * register a new window class without these bits and |
| * implement special code that damages only the control. |
| * |
| * Feature in WinCE. On certain devices, defining |
| * a new window class which looks like BUTTON causes |
| * CreateWindowEx() to crash. The workaround is to use |
| * the class Button directly. |
| */ |
| WNDCLASS lpWndClass = new WNDCLASS (); |
| if (OS.IsWinCE) { |
| OS.GetClassInfo (0, GroupClass, lpWndClass); |
| GroupProc = lpWndClass.lpfnWndProc; |
| } else { |
| TCHAR WC_BUTTON = new TCHAR (0, "BUTTON", true); |
| OS.GetClassInfo (0, WC_BUTTON, lpWndClass); |
| GroupProc = lpWndClass.lpfnWndProc; |
| long /*int*/ hInstance = OS.GetModuleHandle (null); |
| if (!OS.GetClassInfo (hInstance, GroupClass, lpWndClass)) { |
| long /*int*/ hHeap = OS.GetProcessHeap (); |
| lpWndClass.hInstance = hInstance; |
| lpWndClass.style &= ~(OS.CS_HREDRAW | OS.CS_VREDRAW); |
| int byteCount = GroupClass.length () * TCHAR.sizeof; |
| long /*int*/ lpszClassName = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); |
| OS.MoveMemory (lpszClassName, GroupClass, byteCount); |
| lpWndClass.lpszClassName = lpszClassName; |
| OS.RegisterClass (lpWndClass); |
| OS.HeapFree (hHeap, 0, lpszClassName); |
| } |
| } |
| } |
| |
| /** |
| * 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#SHADOW_ETCHED_IN |
| * @see SWT#SHADOW_ETCHED_OUT |
| * @see SWT#SHADOW_IN |
| * @see SWT#SHADOW_OUT |
| * @see SWT#SHADOW_NONE |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Group (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| @Override |
| long /*int*/ callWindowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) { |
| if (handle == 0) return 0; |
| /* |
| * Feature in Windows. When the user clicks on the group |
| * box label, the group box takes focus. This is unwanted. |
| * The fix is to avoid calling the group box window proc. |
| */ |
| switch (msg) { |
| case OS.WM_LBUTTONDOWN: |
| case OS.WM_LBUTTONDBLCLK: |
| return OS.DefWindowProc (hwnd, msg, wParam, lParam); |
| } |
| return OS.CallWindowProc (GroupProc, hwnd, msg, wParam, lParam); |
| } |
| |
| static int checkStyle (int style) { |
| style |= SWT.NO_FOCUS; |
| /* |
| * Even though it is legal to create this widget |
| * with scroll bars, they serve no useful purpose |
| * because they do not automatically scroll the |
| * widget's client area. The fix is to clear |
| * the SWT style. |
| */ |
| return style & ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| } |
| |
| @Override |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| @Override |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| Point size = super.computeSize (wHint, hHint, changed); |
| int length = text.length (); |
| if (length != 0) { |
| String string = fixText (false); |
| |
| /* |
| * If the group has text, and the text is wider than the |
| * client area, pad the width so the text is not clipped. |
| */ |
| TCHAR buffer = new TCHAR (getCodePage (), string == null ? text : string, true); |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| RECT rect = new RECT (); |
| int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE; |
| OS.DrawText (hDC, buffer, -1, rect, flags); |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| int offsetY = OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed () ? 0 : 1; |
| size.x = Math.max (size.x, rect.right - rect.left + CLIENT_INSET * 6 + offsetY); |
| } |
| return size; |
| } |
| |
| @Override |
| public Rectangle computeTrim (int x, int y, int width, int height) { |
| checkWidget (); |
| Rectangle trim = super.computeTrim (x, y, width, height); |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); |
| OS.GetTextMetrics (hDC, tm); |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| int offsetY = OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed () ? 0 : 1; |
| trim.x -= CLIENT_INSET; |
| trim.y -= tm.tmHeight + offsetY; |
| trim.width += CLIENT_INSET * 2; |
| trim.height += tm.tmHeight + CLIENT_INSET + offsetY; |
| return trim; |
| } |
| |
| @Override |
| void createHandle () { |
| /* |
| * Feature in Windows. When a button is created, |
| * it clears the UI state for all controls in the |
| * shell by sending WM_CHANGEUISTATE with UIS_SET, |
| * UISF_HIDEACCEL and UISF_HIDEFOCUS to the parent. |
| * This is undocumented and unexpected. The fix |
| * is to ignore the WM_CHANGEUISTATE, when sent |
| * from CreateWindowEx(). |
| */ |
| parent.state |= IGNORE_WM_CHANGEUISTATE; |
| super.createHandle (); |
| parent.state &= ~IGNORE_WM_CHANGEUISTATE; |
| state |= DRAW_BACKGROUND; |
| state &= ~CANVAS; |
| } |
| |
| @Override |
| void enableWidget (boolean enabled) { |
| super.enableWidget (enabled); |
| /* |
| * Bug in Windows. When a group control is right-to-left and |
| * is disabled, the first pixel of the text is clipped. The |
| * fix is to add a space to both sides of the text. |
| */ |
| String string = fixText (enabled); |
| if (string != null) { |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| OS.SetWindowText (handle, buffer); |
| } |
| } |
| |
| String fixText (boolean enabled) { |
| /* |
| * Bug in Windows. When a group control is right-to-left and |
| * is disabled, the first pixel of the text is clipped. The |
| * fix is to add a space to both sides of the text. |
| */ |
| if (text.length() == 0) return null; |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| String string = null; |
| if (!enabled && (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ())) { |
| string = " " + text + " "; |
| } |
| return !OS.IsUnicode || (style & SWT.FLIP_TEXT_DIRECTION) == 0 ? string : string != null ? LRE + string : LRE + text; |
| } else if (OS.IsUnicode && (style & SWT.FLIP_TEXT_DIRECTION) != 0) { |
| return RLE + text; |
| } |
| return null; |
| } |
| |
| @Override |
| public Rectangle getClientArea () { |
| checkWidget (); |
| forceResize (); |
| RECT rect = new RECT (); |
| OS.GetClientRect (handle, rect); |
| long /*int*/ newFont, oldFont = 0; |
| long /*int*/ hDC = OS.GetDC (handle); |
| newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); |
| TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); |
| OS.GetTextMetrics (hDC, tm); |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| int offsetY = OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed () ? 0 : 1; |
| int x = CLIENT_INSET, y = tm.tmHeight + offsetY; |
| int width = Math.max (0, rect.right - CLIENT_INSET * 2); |
| int height = Math.max (0, rect.bottom - y - CLIENT_INSET); |
| return new Rectangle (x, y, width, height); |
| } |
| |
| @Override |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns the receiver's text, which is the string that the |
| * is used as the <em>title</em>. If the text has not previously |
| * been set, returns an empty string. |
| * |
| * @return the 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; |
| } |
| |
| @Override |
| boolean mnemonicHit (char key) { |
| return setFocus (); |
| } |
| |
| @Override |
| boolean mnemonicMatch (char key) { |
| char mnemonic = findMnemonic (getText ()); |
| if (mnemonic == '\0') return false; |
| return Character.toUpperCase (key) == Character.toUpperCase (mnemonic); |
| } |
| |
| @Override |
| void printWidget (long /*int*/ hwnd, long /*int*/ hdc, GC gc) { |
| /* |
| * Bug in Windows. For some reason, PrintWindow() |
| * returns success but does nothing when it is called |
| * on a printer. The fix is to just go directly to |
| * WM_PRINT in this case. |
| */ |
| boolean success = false; |
| if (!(OS.GetDeviceCaps(gc.handle, OS.TECHNOLOGY) == OS.DT_RASPRINTER)) { |
| int bits = OS.GetWindowLong (hwnd, OS.GWL_STYLE); |
| if ((bits & OS.WS_VISIBLE) == 0) { |
| OS.ShowWindow (hwnd, OS.SW_SHOW); |
| } |
| success = OS.PrintWindow (hwnd, hdc, 0); |
| if ((bits & OS.WS_VISIBLE) == 0) { |
| OS.ShowWindow (hwnd, OS.SW_HIDE); |
| } |
| } |
| |
| /* |
| * Bug in Windows. For some reason, PrintWindow() fails |
| * when it is called on a push button. The fix is to |
| * detect the failure and use WM_PRINT instead. Note |
| * that WM_PRINT cannot be used all the time because it |
| * fails for browser controls when the browser has focus. |
| */ |
| if (!success) { |
| /* |
| * Bug in Windows. For some reason, WM_PRINT when called |
| * with PRF_CHILDREN will not draw the tool bar divider |
| * for tool bar children that do not have CCS_NODIVIDER. |
| * The fix is to draw the group box and iterate through |
| * the children, drawing each one. |
| */ |
| int flags = OS.PRF_CLIENT | OS.PRF_NONCLIENT | OS.PRF_ERASEBKGND; |
| OS.SendMessage (hwnd, OS.WM_PRINT, hdc, flags); |
| int nSavedDC = OS.SaveDC (hdc); |
| Control [] children = _getChildren (); |
| Rectangle rect = getBounds (); |
| OS.IntersectClipRect (hdc, 0, 0, rect.width, rect.height); |
| for (int i=children.length - 1; i>=0; --i) { |
| Point location = children [i].getLocation (); |
| int graphicsMode = OS.GetGraphicsMode(hdc); |
| if (graphicsMode == OS.GM_ADVANCED) { |
| float [] lpXform = {1, 0, 0, 1, location.x, location.y}; |
| OS.ModifyWorldTransform(hdc, lpXform, OS.MWT_LEFTMULTIPLY); |
| } else { |
| OS.SetWindowOrgEx (hdc, -location.x, -location.y, null); |
| } |
| long /*int*/ topHandle = children [i].topHandle(); |
| int bits = OS.GetWindowLong (topHandle, OS.GWL_STYLE); |
| if ((bits & OS.WS_VISIBLE) != 0) { |
| children [i].printWidget (topHandle, hdc, gc); |
| } |
| if (graphicsMode == OS.GM_ADVANCED) { |
| float [] lpXform = {1, 0, 0, 1, -location.x, -location.y}; |
| OS.ModifyWorldTransform(hdc, lpXform, OS.MWT_LEFTMULTIPLY); |
| } |
| } |
| OS.RestoreDC (hdc, nSavedDC); |
| } |
| } |
| |
| @Override |
| void releaseWidget () { |
| super.releaseWidget (); |
| text = null; |
| } |
| |
| @Override |
| int resolveTextDirection () { |
| return resolveTextDirection (text); |
| } |
| |
| @Override |
| public void setFont (Font font) { |
| checkWidget (); |
| Rectangle oldRect = getClientArea (); |
| super.setFont (font); |
| Rectangle newRect = getClientArea (); |
| if (!oldRect.equals (newRect)) sendResize (); |
| } |
| |
| /** |
| * Sets the receiver's text, which is the string that will |
| * be displayed as the receiver's <em>title</em>, to the argument, |
| * which may not be null. The string may include the mnemonic character. |
| * </p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, focus is assigned |
| * to the first child of the group. On most platforms, the |
| * mnemonic appears underlined but may be emphasised in a |
| * platform specific manner. The mnemonic indicator character |
| * '&' can be escaped by doubling it in the string, causing |
| * a single '&' to be displayed. |
| * </p><p> |
| * Note: If control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * @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 ((state & HAS_AUTO_DIRECTION) == 0 || !updateTextDirection (AUTO_TEXT_DIRECTION)) { |
| string = fixText (OS.IsWindowEnabled (handle)); |
| TCHAR buffer = new TCHAR (getCodePage (), string == null ? text : string, true); |
| OS.SetWindowText (handle, buffer); |
| } |
| } |
| |
| @Override |
| boolean updateTextDirection(int textDirection) { |
| if (super.updateTextDirection(textDirection)) { |
| String string = fixText (OS.IsWindowEnabled (handle)); |
| TCHAR buffer = new TCHAR (getCodePage (), string == null ? text : string, true); |
| OS.SetWindowText (handle, buffer); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| int widgetStyle () { |
| /* |
| * Bug in Windows. When GetDCEx() is called with DCX_INTERSECTUPDATE, |
| * the HDC that is returned does not include the current update region. |
| * This was confirmed under DEBUG Windows when GetDCEx() complained about |
| * invalid flags. Therefore, it is not easily possible to get an HDC from |
| * outside of WM_PAINT that includes the current damage and clips children. |
| * Because the receiver has children and draws a frame and label, it is |
| * necessary that the receiver always draw clipped, in the current damaged |
| * area. The fix is to force the receiver to be fully clipped by including |
| * WS_CLIPCHILDREN and WS_CLIPSIBLINGS in the default style bits. |
| */ |
| return super.widgetStyle () | OS.BS_GROUPBOX | OS.WS_CLIPCHILDREN | OS.WS_CLIPSIBLINGS; |
| } |
| |
| @Override |
| TCHAR windowClass () { |
| return GroupClass; |
| } |
| |
| @Override |
| long /*int*/ windowProc () { |
| return GroupProc; |
| } |
| |
| @Override |
| LRESULT WM_ERASEBKGND (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_ERASEBKGND (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. Group boxes do not erase |
| * the background before drawing. The fix is to |
| * fill the background. |
| */ |
| drawBackground (wParam); |
| return LRESULT.ONE; |
| } |
| |
| @Override |
| LRESULT WM_NCHITTEST (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_NCHITTEST (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. The window proc for the group box |
| * returns HTTRANSPARENT indicating that mouse messages |
| * should not be delivered to the receiver and any children. |
| * Normally, group boxes in Windows do not have children and |
| * this is the correct behavior for this case. Because we |
| * allow children, answer HTCLIENT to allow mouse messages |
| * to be delivered to the children. |
| */ |
| long /*int*/ code = callWindowProc (handle, OS.WM_NCHITTEST, wParam, lParam); |
| if (code == OS.HTTRANSPARENT) code = OS.HTCLIENT; |
| return new LRESULT (code); |
| } |
| |
| @Override |
| LRESULT WM_MOUSEMOVE (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_MOUSEMOVE (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. In version 6.00 of COMCTL32.DLL, |
| * every time the mouse moves, the group title redraws. |
| * This only happens when WM_NCHITTEST returns HTCLIENT. |
| * The fix is to avoid calling the group window proc. |
| */ |
| return LRESULT.ZERO; |
| } |
| |
| @Override |
| LRESULT WM_PRINTCLIENT (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_PRINTCLIENT (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. In version 6.00 of COMCTL32.DLL, |
| * when WM_PRINTCLIENT is sent from a child BS_GROUP |
| * control to a parent BS_GROUP, the parent BS_GROUP |
| * clears the font from the HDC. Normally, group boxes |
| * in Windows do not have children so this behavior is |
| * undefined. When the parent of a BS_GROUP is not a |
| * BS_GROUP, there is no problem. The fix is to save |
| * and restore the current font. |
| */ |
| if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { |
| int nSavedDC = OS.SaveDC (wParam); |
| long /*int*/ code = callWindowProc (handle, OS.WM_PRINTCLIENT, wParam, lParam); |
| OS.RestoreDC (wParam, nSavedDC); |
| return new LRESULT (code); |
| } |
| return result; |
| } |
| |
| @Override |
| LRESULT WM_UPDATEUISTATE (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_UPDATEUISTATE (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. When WM_UPDATEUISTATE is sent to |
| * a group, it sends WM_CTLCOLORBTN to get the foreground |
| * and background. If drawing happens in WM_CTLCOLORBTN, |
| * it will overwrite the contents of the control. The |
| * fix is draw the group without drawing the background |
| * and avoid the group window proc. |
| */ |
| boolean redraw = findImageControl () != null; |
| if (!redraw) { |
| if ((state & THEME_BACKGROUND) != 0) { |
| if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { |
| redraw = findThemeControl () != null; |
| } |
| } |
| if (!redraw) redraw = findBackgroundControl () != null; |
| } |
| if (redraw) { |
| OS.InvalidateRect (handle, null, false); |
| long /*int*/ code = OS.DefWindowProc (handle, OS.WM_UPDATEUISTATE, wParam, lParam); |
| return new LRESULT (code); |
| } |
| return result; |
| } |
| |
| @Override |
| LRESULT WM_WINDOWPOSCHANGING (long /*int*/ wParam, long /*int*/ lParam) { |
| LRESULT result = super.WM_WINDOWPOSCHANGING (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Invalidate the portion of the group widget that needs to |
| * be redrawn. Note that for some reason, invalidating the |
| * group from inside WM_SIZE causes pixel corruption for |
| * radio button children. |
| */ |
| if (OS.IsWinCE) return result; |
| if (!OS.IsWindowVisible (handle)) return result; |
| WINDOWPOS lpwp = new WINDOWPOS (); |
| OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof); |
| if ((lpwp.flags & (OS.SWP_NOSIZE | OS.SWP_NOREDRAW)) != 0) { |
| return result; |
| } |
| RECT rect = new RECT (); |
| OS.SetRect (rect, 0, 0, lpwp.cx, lpwp.cy); |
| OS.SendMessage (handle, OS.WM_NCCALCSIZE, 0, rect); |
| int newWidth = rect.right - rect.left; |
| int newHeight = rect.bottom - rect.top; |
| OS.GetClientRect (handle, rect); |
| int oldWidth = rect.right - rect.left; |
| int oldHeight = rect.bottom - rect.top; |
| if (newWidth == oldWidth && newHeight == oldHeight) { |
| return result; |
| } |
| if (newWidth != oldWidth) { |
| int left = oldWidth; |
| if (newWidth < oldWidth) left = newWidth; |
| OS.SetRect (rect, left - CLIENT_INSET, 0, newWidth, newHeight); |
| OS.InvalidateRect (handle, rect, true); |
| } |
| if (newHeight != oldHeight) { |
| int bottom = oldHeight; |
| if (newHeight < oldHeight) bottom = newHeight; |
| if (newWidth < oldWidth) oldWidth -= CLIENT_INSET; |
| OS.SetRect (rect, 0, bottom - CLIENT_INSET, oldWidth, newHeight); |
| OS.InvalidateRect (handle, rect, true); |
| } |
| return result; |
| } |
| } |