IMPORTANT: This field is not 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.

 Control() 
{

}

Prevents uninitialized instances from being created outside the package.

 public Control(Composite parent,
    int style) 
{
	super (parent, style);
	this.parent = parent;
	createWidget ();
}

Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.

Parameters:

parent - a composite control which will be the parent of the new instance (cannot be null)

style - the style of control to construct

Throws:

IllegalArgumentException -
• ERROR_NULL_ARGUMENT - if the parent is null


SWTException -
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
• ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass


Also see:

SWT#BORDER
SWT#LEFT_TO_RIGHT
SWT#RIGHT_TO_LEFT
Widget#checkSubclass
Widget#getStyle
exception: IllegalArgumentException -
• ERROR_NULL_ARGUMENT - if the parent is null


exception: SWTException -
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
• ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass

 LRESULT WM_ACTIVATE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_CAPTURECHANGED(int wParam,
    int lParam) 
{
	return wmCaptureChanged (handle, wParam, lParam);
}

 LRESULT WM_CHANGEUISTATE(int wParam,
    int lParam) 
{
	if ((state & IGNORE_WM_CHANGEUISTATE) != 0) return LRESULT.ZERO;
	return null;
}

 LRESULT WM_CHAR(int wParam,
    int lParam) 
{
	return wmChar (handle, wParam, lParam);
}

 LRESULT WM_CLEAR(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_CLOSE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_COMMAND(int wParam,
    int lParam) 
{
	/*
	* When the WM_COMMAND message is sent from a
	* menu, the HWND parameter in LPARAM is zero.
	*/
	if (lParam == 0) {
		Decorations shell = menuShell ();
		if (shell.isEnabled ()) {
			int id = OS.LOWORD (wParam);
			MenuItem item = display.getMenuItem (id);
			if (item != null && item.isEnabled ()) {
				return item.wmCommandChild (wParam, lParam);
			}
		}
		return null;
	}
	Control control = display.getControl (lParam);
	if (control == null) return null;
	return control.wmCommandChild (wParam, lParam);
}

 LRESULT WM_CONTEXTMENU(int wParam,
    int lParam) 
{
	return wmContextMenu (handle, wParam, lParam);
}

 LRESULT WM_CTLCOLOR(int wParam,
    int lParam) 
{
	int /*long*/ hPalette = display.hPalette;
	if (hPalette != 0) {
		OS.SelectPalette (wParam, hPalette, false);
		OS.RealizePalette (wParam);
	}
	Control control = display.getControl (lParam);
	if (control == null) return null;
	return control.wmColorChild (wParam, lParam);
}

 LRESULT WM_CUT(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_DESTROY(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_DRAWITEM(int wParam,
    int lParam) 
{
	DRAWITEMSTRUCT struct = new DRAWITEMSTRUCT ();
	OS.MoveMemory (struct, lParam, DRAWITEMSTRUCT.sizeof);
	if (struct.CtlType == OS.ODT_MENU) {
		MenuItem item = display.getMenuItem (struct.itemID);
		if (item == null) return null;
		return item.wmDrawChild (wParam, lParam);
	}
	Control control = display.getControl (struct.hwndItem);
	if (control == null) return null;
	return control.wmDrawChild (wParam, lParam);
}

 LRESULT WM_ENDSESSION(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_ENTERIDLE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_ERASEBKGND(int wParam,
    int lParam) 
{
	if ((state & DRAW_BACKGROUND) != 0) {
		if (findImageControl () != null) return LRESULT.ONE;
	}
	if ((state & THEME_BACKGROUND) != 0) {
		if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
			if (findThemeControl () != null) return LRESULT.ONE;
		}
	}
	return null;
}

 LRESULT WM_GETDLGCODE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_GETFONT(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_GETMINMAXINFO(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_GETOBJECT(int wParam,
    int lParam) 
{
	if (accessible != null) {
		int /*long*/ result = accessible.internal_WM_GETOBJECT (wParam, lParam);
		if (result != 0) return new LRESULT (result);
	}
	return null;
}

 LRESULT WM_HELP(int wParam,
    int lParam) 
{
	if (OS.IsWinCE) return null;
	HELPINFO lphi = new HELPINFO ();
	OS.MoveMemory (lphi, lParam, HELPINFO.sizeof);
	Decorations shell = menuShell ();
	if (!shell.isEnabled ()) return null;
	if (lphi.iContextType == OS.HELPINFO_MENUITEM) {
		MenuItem item = display.getMenuItem (lphi.iCtrlId);
		if (item != null && item.isEnabled ()) {
			Widget widget = null;
			if (item.hooks (SWT.Help)) {
				widget = item;
			} else {
				Menu menu = item.parent;
				if (menu.hooks (SWT.Help)) widget = menu;
			}
			if (widget != null) {
				int /*long*/ hwndShell = shell.handle;
				OS.SendMessage (hwndShell, OS.WM_CANCELMODE, 0, 0);
				widget.postEvent (SWT.Help);
				return LRESULT.ONE;
			}
		}
		return null;
	}
	if (hooks (SWT.Help)) {
		postEvent (SWT.Help);
		return LRESULT.ONE;
	}
	return null;
}

 LRESULT WM_HOTKEY(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_HSCROLL(int wParam,
    int lParam) 
{
	Control control = display.getControl (lParam);
	if (control == null) return null;
	return control.wmScrollChild (wParam, lParam);
}

 LRESULT WM_IME_CHAR(int wParam,
    int lParam) 
{
	return wmIMEChar (handle, wParam, lParam);
}

 LRESULT WM_IME_COMPOSITION(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_IME_COMPOSITION_START(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_IME_ENDCOMPOSITION(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_INITMENUPOPUP(int wParam,
    int lParam) 
{
	
	/* Ignore WM_INITMENUPOPUP for an accelerator */
	if (display.accelKeyHit) return null;
	/*
	* If the high order word of LPARAM is non-zero,
	* the menu is the system menu and we can ignore
	* WPARAM.  Otherwise, use WPARAM to find the menu.
	*/
	Shell shell = getShell ();
	Menu oldMenu = shell.activeMenu, newMenu = null;
	if (OS.HIWORD (lParam) == 0) {
		newMenu = menuShell ().findMenu (wParam);
		if (newMenu != null) newMenu.update ();
	}	
	Menu menu = newMenu;
	while (menu != null && menu != oldMenu) {
		menu = menu.getParentMenu ();
	}
	if (menu == null) {
		menu = shell.activeMenu;
		while (menu != null) {
			/*
			* It is possible (but unlikely), that application
			* code could have disposed the widget in the hide
			* event.  If this happens, stop searching up the
			* ancestor list because there is no longer a link
			* to follow.
			*/
			menu.sendEvent (SWT.Hide);
			if (menu.isDisposed ()) break;
			menu = menu.getParentMenu ();
			Menu ancestor = newMenu;
			while (ancestor != null && ancestor != menu) {
				ancestor = ancestor.getParentMenu ();
			}
			if (ancestor != null) break;
		}
	}
	/*
	* The shell and the new menu may be disposed because of
	* sending the hide event to the ancestor menus but setting
	* a field to null in a disposed shell is not harmful.
	*/
	if (newMenu != null && newMenu.isDisposed ()) newMenu = null;
	shell.activeMenu = newMenu;
	/* Send the show event */
	if (newMenu != null && newMenu != oldMenu) {
		newMenu.sendEvent (SWT.Show);
		// widget could be disposed at this point
	}
	return null;
}

 LRESULT WM_INPUTLANGCHANGE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_KEYDOWN(int wParam,
    int lParam) 
{
	return wmKeyDown (handle, wParam, lParam);
}

 LRESULT WM_KEYUP(int wParam,
    int lParam) 
{
	return wmKeyUp (handle, wParam, lParam);
}

 LRESULT WM_KILLFOCUS(int wParam,
    int lParam) 
{
	return wmKillFocus (handle, wParam, lParam);
}

 LRESULT WM_LBUTTONDBLCLK(int wParam,
    int lParam) 
{
	return wmLButtonDblClk (handle, wParam, lParam);
}

 LRESULT WM_LBUTTONDOWN(int wParam,
    int lParam) 
{
	return wmLButtonDown (handle, wParam, lParam);
}

 LRESULT WM_LBUTTONUP(int wParam,
    int lParam) 
{
	return wmLButtonUp (handle, wParam, lParam);
}

 LRESULT WM_MBUTTONDBLCLK(int wParam,
    int lParam) 
{
	return wmMButtonDblClk (handle, wParam, lParam);
}

 LRESULT WM_MBUTTONDOWN(int wParam,
    int lParam) 
{
	return wmMButtonDown (handle, wParam, lParam);
}

 LRESULT WM_MBUTTONUP(int wParam,
    int lParam) 
{
	return wmMButtonUp (handle, wParam, lParam);
}

 LRESULT WM_MEASUREITEM(int wParam,
    int lParam) 
{
	MEASUREITEMSTRUCT struct = new MEASUREITEMSTRUCT ();
	OS.MoveMemory (struct, lParam, MEASUREITEMSTRUCT.sizeof);
	if (struct.CtlType == OS.ODT_MENU) {
		MenuItem item = display.getMenuItem (struct.itemID);
		if (item == null) return null;
		return item.wmMeasureChild (wParam, lParam);
	}
	int /*long*/ hwnd = OS.GetDlgItem (handle, struct.CtlID);
	Control control = display.getControl (hwnd);
	if (control == null) return null;
	return control.wmMeasureChild (wParam, lParam);
}

 LRESULT WM_MENUCHAR(int wParam,
    int lParam) 
{
	/*
	* Feature in Windows.  When the user types Alt+< key >
	* and < key > does not match a mnemonic in the System
	* menu or the menu bar, Windows beeps.  This beep is
	* unexpected and unwanted by applications that look
	* for Alt+< key >.  The fix is to detect the case and
	* stop Windows from beeping by closing the menu.
	*/
	int type = OS.HIWORD (wParam);
	if (type == 0 || type == OS.MF_SYSMENU) {
		display.mnemonicKeyHit = false;
		return new LRESULT (OS.MAKELRESULT (0, OS.MNC_CLOSE));
	}
	return null;
}

 LRESULT WM_MENUSELECT(int wParam,
    int lParam) 
{
	int code = OS.HIWORD (wParam);
	Shell shell = getShell ();
	if (code == 0xFFFF && lParam == 0) {
		Menu menu = shell.activeMenu;
		while (menu != null) {
			/*
			* When the user cancels any menu that is not the
			* menu bar, assume a mnemonic key was pressed to open
			* the menu from WM_SYSCHAR.  When the menu was invoked
			* using the mouse, this assumption is wrong but not
			* harmful.  This variable is only used in WM_SYSCHAR
			* and WM_SYSCHAR is only sent after the user has pressed
			* a mnemonic.
			*/
			display.mnemonicKeyHit = true;
			/*
			* It is possible (but unlikely), that application
			* code could have disposed the widget in the hide
			* event.  If this happens, stop searching up the
			* parent list because there is no longer a link
			* to follow.
			*/
			menu.sendEvent (SWT.Hide);
			if (menu.isDisposed ()) break;
			menu = menu.getParentMenu ();
		}
		/*
		* The shell may be disposed because of sending the hide
		* event to the last active menu menu but setting a field
		* to null in a destroyed widget is not harmful.
		*/
		shell.activeMenu = null;
		return null;
	}
	if ((code & OS.MF_SYSMENU) != 0) return null;
	if ((code & OS.MF_HILITE) != 0) {
		MenuItem item = null;
		Decorations menuShell = menuShell ();
		if ((code & OS.MF_POPUP) != 0) {
			int index = OS.LOWORD (wParam);
			MENUITEMINFO info = new MENUITEMINFO ();
			info.cbSize = MENUITEMINFO.sizeof;
			info.fMask = OS.MIIM_SUBMENU;
			if (OS.GetMenuItemInfo (lParam, index, true, info)) {
				Menu newMenu = menuShell.findMenu (info.hSubMenu);
				if (newMenu != null) item = newMenu.cascade;
			}	
		} else {
			Menu newMenu = menuShell.findMenu (lParam);
			if (newMenu != null) {
				int id = OS.LOWORD (wParam);
				item = display.getMenuItem (id);
			}
			Menu oldMenu = shell.activeMenu;
			if (oldMenu != null) {
				Menu ancestor = oldMenu;
				while (ancestor != null && ancestor != newMenu) {
					ancestor = ancestor.getParentMenu ();
				}
				if (ancestor == newMenu) {
					ancestor = oldMenu;
					while (ancestor != newMenu) {
						/*
						* It is possible (but unlikely), that application
						* code could have disposed the widget in the hide
						* event or the item about to be armed.  If this
						* happens, stop searching up the ancestor list
						* because there is no longer a link to follow.
						*/
						ancestor.sendEvent (SWT.Hide);
						if (ancestor.isDisposed ()) break;
						ancestor = ancestor.getParentMenu ();
						if (ancestor == null) break;
					}
					/*
					* The shell and/or the item could be disposed when
					* processing hide events from above.  If this happens,
					* ensure that the shell is not accessed and that no
					* arm event is sent to the item.
					*/
					if (!shell.isDisposed ()) {
						if (newMenu != null && newMenu.isDisposed ()) {
							newMenu = null;
						}
						shell.activeMenu = newMenu;
					}
					if (item != null && item.isDisposed ()) item = null;
				}
			}
		}
		if (item != null) item.sendEvent (SWT.Arm);
	}
	return null;
}

 LRESULT WM_MOUSEACTIVATE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_MOUSEHOVER(int wParam,
    int lParam) 
{
	return wmMouseHover (handle, wParam, lParam);
}

 LRESULT WM_MOUSELEAVE(int wParam,
    int lParam) 
{
	if (OS.COMCTL32_MAJOR  >= 6) getShell ().fixToolTip ();
	return wmMouseLeave (handle, wParam, lParam);
}

 LRESULT WM_MOUSEMOVE(int wParam,
    int lParam) 
{
	return wmMouseMove (handle, wParam, lParam);
}

 LRESULT WM_MOUSEWHEEL(int wParam,
    int lParam) 
{
	return wmMouseWheel (handle, wParam, lParam);
}

 LRESULT WM_MOVE(int wParam,
    int lParam) 
{
	state |= MOVE_OCCURRED;
	if (findImageControl () != null) {
		if (this != getShell ()) redrawChildren ();
	} else {
		if ((state & THEME_BACKGROUND) != 0) {
			if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
				if (OS.IsWindowVisible (handle)) {
					if (findThemeControl () != null) redrawChildren ();
				}
			}
		}
	}
	if ((state & MOVE_DEFERRED) == 0) sendEvent (SWT.Move);
	// widget could be disposed at this point
	return null;
}

 LRESULT WM_NCACTIVATE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_NCCALCSIZE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_NCHITTEST(int wParam,
    int lParam) 
{
	if (!OS.IsWindowEnabled (handle)) return null;
	if (!isActive ()) return new LRESULT (OS.HTTRANSPARENT);
	return null;
}

 LRESULT WM_NCLBUTTONDOWN(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_NCPAINT(int wParam,
    int lParam) 
{
	return wmNCPaint (handle, wParam, lParam);
}

 LRESULT WM_NOTIFY(int wParam,
    int lParam) 
{
	NMHDR hdr = new NMHDR ();
	OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
	return wmNotify (hdr, wParam, lParam);
}

 LRESULT WM_PAINT(int wParam,
    int lParam) 
{
	return wmPaint (handle, wParam, lParam);
}

 LRESULT WM_PALETTECHANGED(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_PARENTNOTIFY(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_PASTE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_PRINT(int wParam,
    int lParam) 
{
	return wmPrint (handle, wParam, lParam);
}

 LRESULT WM_PRINTCLIENT(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_QUERYENDSESSION(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_QUERYNEWPALETTE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_QUERYOPEN(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_RBUTTONDBLCLK(int wParam,
    int lParam) 
{
	return wmRButtonDblClk (handle, wParam, lParam);
}

 LRESULT WM_RBUTTONDOWN(int wParam,
    int lParam) 
{
	return wmRButtonDown (handle, wParam, lParam);
}

 LRESULT WM_RBUTTONUP(int wParam,
    int lParam) 
{
	return wmRButtonUp (handle, wParam, lParam);
}

 LRESULT WM_SETCURSOR(int wParam,
    int lParam) 
{
	int hitTest = (short) OS.LOWORD (lParam);
 	if (hitTest == OS.HTCLIENT) {
		Control control = display.getControl (wParam);
		if (control == null) return null;
		Cursor cursor = control.findCursor ();
		if (cursor != null) {
			OS.SetCursor (cursor.handle);
			return LRESULT.ONE;
		}
	}
	return null;
}

 LRESULT WM_SETFOCUS(int wParam,
    int lParam) 
{
	return wmSetFocus (handle, wParam, lParam);
}

 LRESULT WM_SETFONT(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_SETREDRAW(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_SETTINGCHANGE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_SHOWWINDOW(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_SIZE(int wParam,
    int lParam) 
{
	state |= RESIZE_OCCURRED;
	if ((state & RESIZE_DEFERRED) == 0) sendEvent (SWT.Resize);
	// widget could be disposed at this point
	return null;
}

 LRESULT WM_SYSCHAR(int wParam,
    int lParam) 
{
	return wmSysChar (handle, wParam, lParam);
}

 LRESULT WM_SYSCOLORCHANGE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_SYSCOMMAND(int wParam,
    int lParam) 
{
	/*
	* Check to see if the command is a system command or
	* a user menu item that was added to the System menu.
	* When a user item is added to the System menu,
	* WM_SYSCOMMAND must always return zero.
	* 
	* NOTE: This is undocumented.
	*/
	if ((wParam & 0xF000) == 0) {
		Decorations shell = menuShell ();
		if (shell.isEnabled ()) {
			MenuItem item = display.getMenuItem (OS.LOWORD (wParam));
			if (item != null) item.wmCommandChild (wParam, lParam);
		}
		return LRESULT.ZERO;
	}
	/* Process the System Command */
	int cmd = (int)/*64*/wParam & 0xFFF0;
	switch (cmd) {
		case OS.SC_CLOSE:
			int /*long*/ hwndShell = menuShell ().handle;
			int bits = OS.GetWindowLong (hwndShell, OS.GWL_STYLE);
			if ((bits & OS.WS_SYSMENU) == 0) return LRESULT.ZERO;
			break;
		case OS.SC_KEYMENU:
			/*
			* When lParam is zero, one of F10, Shift+F10, Ctrl+F10 or
			* Ctrl+Shift+F10 was pressed.  If there is no menu bar and
			* the focus control is interested in keystrokes, give the
			* key to the focus control.  Normally, F10 with no menu bar
			* moves focus to the System menu but this can be achieved
			* using Alt+Space.  To allow the application to see F10,
			* avoid running the default window proc.
			* 
			* NOTE:  When F10 is pressed, WM_SYSCOMMAND is sent to the
			* shell, not the focus control.  This is undocumented Windows
			* behavior.
			*/
			if (lParam == 0) {
				Decorations shell = menuShell ();
				Menu menu = shell.getMenuBar ();
				if (menu == null) {
					Control control = display._getFocusControl ();
					if (control != null) {
						if (control.hooks (SWT.KeyDown) || control.hooks (SWT.KeyUp)) {
							display.mnemonicKeyHit = false;
							return LRESULT.ZERO;
						}
					}
				}
			} else {
				/*
				* When lParam is not zero, Alt+< key > was pressed.  If the
				* application is interested in keystrokes and there is a
				* menu bar, check to see whether the key that was pressed
				* matches a mnemonic on the menu bar.  Normally, Windows
				* matches the first character of a menu item as well as
				* matching the mnemonic character.  To allow the application
				* to see the keystrokes in this case, avoid running the default
				* window proc.
				* 
				* NOTE: When the user types Alt+Space, the System menu is
				* activated.  In this case the application should not see
				* the keystroke.
				*/
				if (hooks (SWT.KeyDown) || hooks (SWT.KeyUp)) {
					if (lParam != ' ') {
						Decorations shell = menuShell ();
						Menu menu = shell.getMenuBar ();
						if (menu != null) {
							char key = Display.mbcsToWcs ((int)/*64*/lParam);
							if (key != 0) {
								key = Character.toUpperCase (key);
								MenuItem [] items = menu.getItems ();
								for (int i=0; i< items.length; i++) {
									MenuItem item = items [i];
									String text = item.getText ();
									char mnemonic = findMnemonic (text);
									if (text.length ()  > 0 && mnemonic == 0) {
										char ch = text.charAt (0);
										if (Character.toUpperCase (ch) == key) {
											display.mnemonicKeyHit = false;
											return LRESULT.ZERO;
										}
									}
								}
							}
						} else {
							display.mnemonicKeyHit = false;
						}
					}
				}
			}
			// FALL THROUGH
		case OS.SC_HSCROLL:
		case OS.SC_VSCROLL:
			/*
			* Do not allow keyboard traversal of the menu bar
			* or scrolling when the shell is not enabled.
			*/
			Decorations shell = menuShell ();
			if (!shell.isEnabled () || !shell.isActive ()) {
				return LRESULT.ZERO;
			}
			break;
		case OS.SC_MINIMIZE:
			/* Save the focus widget when the shell is minimized */
			menuShell ().saveFocus ();
			break;
	}
	return null;
}

 LRESULT WM_SYSKEYDOWN(int wParam,
    int lParam) 
{
	return wmSysKeyDown (handle, wParam, lParam);
}

 LRESULT WM_SYSKEYUP(int wParam,
    int lParam) 
{
	return wmSysKeyUp (handle, wParam, lParam);
}

 LRESULT WM_TIMER(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_UNDO(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_UPDATEUISTATE(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT WM_VSCROLL(int wParam,
    int lParam) 
{
	Control control = display.getControl (lParam);
	if (control == null) return null;
	return control.wmScrollChild (wParam, lParam);
}

 LRESULT WM_WINDOWPOSCHANGED(int wParam,
    int lParam) 
{
	try {
		display.resizeCount++;
		int /*long*/ code = callWindowProc (handle, OS.WM_WINDOWPOSCHANGED, wParam, lParam);
		return code == 0 ? LRESULT.ZERO : new LRESULT (code);
	} finally {
		--display.resizeCount;
	}
}

 LRESULT WM_WINDOWPOSCHANGING(int wParam,
    int lParam) 
{
	/*
	* Bug in Windows.  When WM_SETREDRAW is used to turn off drawing
	* for a control and the control is moved or resized, Windows does
	* not redraw the area where the control once was in the parent.
	* The fix is to detect this case and redraw the area.
	*/
	if (!getDrawing()) {
		Shell shell = getShell ();
		if (shell != this) {
			WINDOWPOS lpwp = new WINDOWPOS ();
			OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof);
			if ((lpwp.flags & OS.SWP_NOMOVE) == 0 || (lpwp.flags & OS.SWP_NOSIZE) == 0) {
				RECT rect = new RECT ();
				OS.GetWindowRect (topHandle (), rect);
				int width = rect.right - rect.left;
				int height = rect.bottom - rect.top;
				if (width != 0 && height != 0) {
					int /*long*/ hwndParent = parent == null ? 0 : parent.handle;
					OS.MapWindowPoints (0, hwndParent, rect, 2);
					if (OS.IsWinCE) {
						OS.InvalidateRect (hwndParent, rect, true);
					} else {
						int /*long*/ rgn1 = OS.CreateRectRgn (rect.left, rect.top, rect.right, rect.bottom);
						int /*long*/ rgn2 = OS.CreateRectRgn (lpwp.x, lpwp.y, lpwp.x + lpwp.cx, lpwp.y + lpwp.cy);
						OS.CombineRgn (rgn1, rgn1, rgn2, OS.RGN_DIFF);
						int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
						OS.RedrawWindow (hwndParent, null, rgn1, flags);
						OS.DeleteObject (rgn1);
						OS.DeleteObject (rgn2);
					}
				}
			}
		}
	}
	return null;
}

 LRESULT WM_XBUTTONDBLCLK(int wParam,
    int lParam) 
{
	return wmXButtonDblClk (handle, wParam, lParam);
}

 LRESULT WM_XBUTTONDOWN(int wParam,
    int lParam) 
{
	return wmXButtonDown (handle, wParam, lParam);
}

 LRESULT WM_XBUTTONUP(int wParam,
    int lParam) 
{
	return wmXButtonUp (handle, wParam, lParam);
}

 public  void addControlListener(ControlListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Resize,typedListener);
	addListener (SWT.Move,typedListener);
}

Adds the listener to the collection of listeners who will be notified when the control is moved or resized, by sending it one of the messages defined in the ControlListener interface.

 public  void addDragDetectListener(DragDetectListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.DragDetect,typedListener);
}

Adds the listener to the collection of listeners who will be notified when a drag gesture occurs, by sending it one of the messages defined in the DragDetectListener interface.

 public  void addFocusListener(FocusListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.FocusIn,typedListener);
	addListener (SWT.FocusOut,typedListener);
}

Adds the listener to the collection of listeners who will be notified when the control gains or loses focus, by sending it one of the messages defined in the FocusListener interface.

 public  void addHelpListener(HelpListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Help, typedListener);
}

Adds the listener to the collection of listeners who will be notified when help events are generated for the control, by sending it one of the messages defined in the HelpListener interface.

 public  void addKeyListener(KeyListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.KeyUp,typedListener);
	addListener (SWT.KeyDown,typedListener);
}

Adds the listener to the collection of listeners who will be notified when keys are pressed and released on the system keyboard, by sending it one of the messages defined in the KeyListener interface.

When a key listener is added to a control, the control will take part in widget traversal. By default, all traversal keys (such as the tab key and so on) are delivered to the control. In order for a control to take part in traversal, it should listen for traversal events. Otherwise, the user can traverse into a control but not out. Note that native controls such as table and tree implement key traversal in the operating system. It is not necessary to add traversal listeners for these controls, unless you want to override the default traversal.

 public  void addMenuDetectListener(MenuDetectListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.MenuDetect, typedListener);
}

Adds the listener to the collection of listeners who will be notified when the platform-specific context menu trigger has occurred, by sending it one of the messages defined in the MenuDetectListener interface.

 public  void addMouseListener(MouseListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.MouseDown,typedListener);
	addListener (SWT.MouseUp,typedListener);
	addListener (SWT.MouseDoubleClick,typedListener);
}

Adds the listener to the collection of listeners who will be notified when mouse buttons are pressed and released, by sending it one of the messages defined in the MouseListener interface.

 public  void addMouseMoveListener(MouseMoveListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.MouseMove,typedListener);
}

Adds the listener to the collection of listeners who will be notified when the mouse moves, by sending it one of the messages defined in the MouseMoveListener interface.

 public  void addMouseTrackListener(MouseTrackListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.MouseEnter,typedListener);
	addListener (SWT.MouseExit,typedListener);
	addListener (SWT.MouseHover,typedListener);
}

Adds the listener to the collection of listeners who will be notified when the mouse passes or hovers over controls, by sending it one of the messages defined in the MouseTrackListener interface.

 public  void addMouseWheelListener(MouseWheelListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.MouseWheel, typedListener);
}

Adds the listener to the collection of listeners who will be notified when the mouse wheel is scrolled, by sending it one of the messages defined in the MouseWheelListener interface.

 public  void addPaintListener(PaintListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Paint,typedListener);
}

Adds the listener to the collection of listeners who will be notified when the receiver needs to be painted, by sending it one of the messages defined in the PaintListener interface.

 public  void addTraverseListener(TraverseListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Traverse,typedListener);
}

Adds the listener to the collection of listeners who will be notified when traversal events occur, by sending it one of the messages defined in the TraverseListener interface.

 int borderHandle() 
{
	return handle;
}

  void checkBackground() 
{
	Shell shell = getShell ();
	if (this == shell) return;
	state &= ~PARENT_BACKGROUND;
	Composite composite = parent;
	do {
		int mode = composite.backgroundMode;
		if (mode != 0) {
			if (mode == SWT.INHERIT_DEFAULT) {
				Control control = this;
				do {
					if ((control.state & THEME_BACKGROUND) == 0) {
						return;
					}
					control = control.parent;
				} while (control != composite);
			}
			state |= PARENT_BACKGROUND;
			return;
		}
		if (composite == shell) break;
		composite = composite.parent;
	} while (true);
}

  void checkBorder() 
{
	if (getBorderWidth () == 0) style &= ~SWT.BORDER;
}

  void checkBuffered() 
{
	style &= ~SWT.DOUBLE_BUFFERED;
}

  void checkComposited() 
{
	/* Do nothing */
}

 boolean checkHandle(int hwnd) 
{
	return hwnd == handle;
}

  void checkMirrored() 
{
	if ((style & SWT.RIGHT_TO_LEFT) != 0) {
		int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
		if ((bits & OS.WS_EX_LAYOUTRTL) != 0) style |= SWT.MIRRORED;
	}
}

 public Point computeSize(int wHint,
    int hHint) 
{
	return computeSize (wHint, hHint, true);
}

Returns the preferred size of the receiver.

The preferred size of a control is the size that it would best be displayed at. The width hint and height hint arguments allow the caller to ask a control questions such as "Given a particular width, how high does the control need to be to show all of the contents?" To indicate that the caller does not wish to constrain a particular dimension, the constant SWT.DEFAULT is passed for the hint.

 public Point computeSize(int wHint,
    int hHint,
    boolean changed) 
{
	checkWidget ();
	int width = DEFAULT_WIDTH;
	int height = DEFAULT_HEIGHT;
	if (wHint != SWT.DEFAULT) width = wHint;
	if (hHint != SWT.DEFAULT) height = hHint;
	int border = getBorderWidth ();
	width += border * 2;
	height += border * 2;
	return new Point (width, height);
}

Returns the preferred size of the receiver.

The preferred size of a control is the size that it would best be displayed at. The width hint and height hint arguments allow the caller to ask a control questions such as "Given a particular width, how high does the control need to be to show all of the contents?" To indicate that the caller does not wish to constrain a particular dimension, the constant SWT.DEFAULT is passed for the hint.

If the changed flag is true, it indicates that the receiver's contents have changed, therefore any caches that a layout manager containing the control may have been keeping need to be flushed. When the control is resized, the changed flag will be false, so layout manager caches can be retained.

 Widget computeTabGroup() 
{
	if (isTabGroup ()) return this;
	return parent.computeTabGroup ();
}

 Widget[] computeTabList() 
{
	if (isTabGroup ()) {
		if (getVisible () && getEnabled ()) {
			return new Widget [] {this};
		}
	}
	return new Widget [0];
}

 Control computeTabRoot() 
{
	Control [] tabList = parent._getTabList ();
	if (tabList != null) {
		int index = 0;
		while (index <  tabList.length) {
			if (tabList [index] == this) break;
			index++;
		}
		if (index == tabList.length) {
			if (isTabGroup ()) return this;
		}
	}
	return parent.computeTabRoot ();
}

  void createHandle() 
{
	int /*long*/ hwndParent = widgetParent ();
	handle = OS.CreateWindowEx (
		widgetExtStyle (),
		windowClass (),
		null,
		widgetStyle (),
		OS.CW_USEDEFAULT, 0, OS.CW_USEDEFAULT, 0,
		hwndParent,
		0,
		OS.GetModuleHandle (null),
		widgetCreateStruct ());
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
	if ((bits & OS.WS_CHILD) != 0) {
		OS.SetWindowLongPtr (handle, OS.GWLP_ID, handle);
	}
	if (OS.IsDBLocale && hwndParent != 0) {
		int /*long*/ hIMC = OS.ImmGetContext (hwndParent);
		OS.ImmAssociateContext (handle, hIMC);
		OS.ImmReleaseContext (hwndParent, hIMC);
	}
}

  void createWidget() 
{
	state |= DRAG_DETECT;
	foreground = background = -1;
	checkOrientation (parent);
	createHandle ();
	checkBackground ();
	checkBuffered ();
	checkComposited ();
	register ();
	subclass ();
	setDefaultFont ();
	checkMirrored ();
	checkBorder ();
	if ((state & PARENT_BACKGROUND) != 0) {
		setBackground ();
	}
}

 int defaultBackground() 
{
	if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW);
	return OS.GetSysColor (OS.COLOR_BTNFACE);
}

 int defaultFont() 
{
	return display.getSystemFont ().handle;
}

 int defaultForeground() 
{
	return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
}

  void deregister() 
{
	display.removeControl (handle);
}

  void destroyWidget() 
{
	int /*long*/ hwnd = topHandle ();
	releaseHandle ();
	if (hwnd != 0) {
		OS.DestroyWindow (hwnd);
	}
}

 public boolean dragDetect(Event event) 
{
	checkWidget ();
	if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
	return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
}

Detects a drag and drop gesture. This method is used to detect a drag gesture when called from within a mouse down listener.

By default, a drag is detected when the gesture occurs anywhere within the client area of a control. Some controls, such as tables and trees, override this behavior. In addition to the operating system specific drag gesture, they require the mouse to be inside an item. Custom widget writers can use setDragDetect to disable the default detection, listen for mouse down, and then call dragDetect() from within the listener to conditionally detect a drag.

 public boolean dragDetect(MouseEvent event) 
{
	checkWidget ();
	if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
	return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
}

Detects a drag and drop gesture. This method is used to detect a drag gesture when called from within a mouse down listener.

By default, a drag is detected when the gesture occurs anywhere within the client area of a control. Some controls, such as tables and trees, override this behavior. In addition to the operating system specific drag gesture, they require the mouse to be inside an item. Custom widget writers can use setDragDetect to disable the default detection, listen for mouse down, and then call dragDetect() from within the listener to conditionally detect a drag.

 boolean dragDetect(int button,
    int count,
    int stateMask,
    int x,
    int y) 
{
	if (button != 1 || count != 1) return false;
	boolean dragging = dragDetect (handle, x, y, false, null, null);
	if (OS.GetKeyState (OS.VK_LBUTTON) <  0) {
		if (OS.GetCapture () != handle) OS.SetCapture (handle);
	}
	if (!dragging) {
		/*
		* Feature in Windows.  DragDetect() captures the mouse
		* and tracks its movement until the user releases the
		* left mouse button, presses the ESC key, or moves the
		* mouse outside the drag rectangle.  If the user moves
		* the mouse outside of the drag rectangle, DragDetect()
		* returns true and a drag and drop operation can be
		* started.  When the left mouse button is released or
		* the ESC key is pressed, these events are consumed by
		* DragDetect() so that application code that matches
		* mouse down/up pairs or looks for the ESC key will not
		* function properly.  The fix is to send the missing
		* events when the drag has not started.
		* 
		* NOTE: For now, don't send a fake WM_KEYDOWN/WM_KEYUP
		* events for the ESC key.  This would require computing
		* wParam (the key) and lParam (the repeat count, scan code,
		* extended-key flag, context code, previous key-state flag,
		* and transition-state flag) which is non-trivial.
		*/
		if (button == 1 && OS.GetKeyState (OS.VK_ESCAPE)  >= 0) {
			int wParam = 0;
			if ((stateMask & SWT.CTRL) != 0) wParam |= OS.MK_CONTROL;
			if ((stateMask & SWT.SHIFT) != 0) wParam |= OS.MK_SHIFT;
			if ((stateMask & SWT.ALT) != 0) wParam |= OS.MK_ALT;
			if ((stateMask & SWT.BUTTON1) != 0) wParam |= OS.MK_LBUTTON;
			if ((stateMask & SWT.BUTTON2) != 0) wParam |= OS.MK_MBUTTON;
			if ((stateMask & SWT.BUTTON3) != 0) wParam |= OS.MK_RBUTTON;
			if ((stateMask & SWT.BUTTON4) != 0) wParam |= OS.MK_XBUTTON1;
			if ((stateMask & SWT.BUTTON5) != 0) wParam |= OS.MK_XBUTTON2;
			int /*long*/ lParam = OS.MAKELPARAM (x, y);
			OS.SendMessage (handle, OS.WM_LBUTTONUP, wParam, lParam);
		}
		return false;
	}
	return sendDragEvent (button, stateMask, x, y);
}

  void drawBackground(int hDC) 
{
	RECT rect = new RECT ();
	OS.GetClientRect (handle, rect);
	drawBackground (hDC, rect);
}

  void drawBackground(int hDC,
    RECT rect) 
{
	drawBackground (hDC, rect, -1);
}

  void drawBackground(int hDC,
    RECT rect,
    int pixel) 
{
	Control control = findBackgroundControl ();
	if (control != null) {
		if (control.backgroundImage != null) {
			fillImageBackground (hDC, control, rect);
			return;
		}
		pixel = control.getBackgroundPixel ();
	}
	if (pixel == -1) {
		if ((state & THEME_BACKGROUND) != 0) {
			if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
				control = findThemeControl ();
				if (control != null) {
					fillThemeBackground (hDC, control, rect);
					return;
				}
			}
		}
	}
	if (pixel == -1) pixel = getBackgroundPixel ();
	fillBackground (hDC, pixel, rect);
}

  void drawImageBackground(int hDC,
    int hwnd,
    int hBitmap,
    RECT rect) 
{
	RECT rect2 = new RECT ();
	OS.GetClientRect (hwnd, rect2);
	OS.MapWindowPoints (hwnd, handle, rect2, 2);
	int /*long*/ hBrush = findBrush (hBitmap, OS.BS_PATTERN);
	POINT lpPoint = new POINT ();
	OS.GetWindowOrgEx (hDC, lpPoint);
	OS.SetBrushOrgEx (hDC, -rect2.left - lpPoint.x, -rect2.top - lpPoint.y, lpPoint);
	int /*long*/ hOldBrush = OS.SelectObject (hDC, hBrush);
	OS.PatBlt (hDC, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
	OS.SetBrushOrgEx (hDC, lpPoint.x, lpPoint.y, null);
	OS.SelectObject (hDC, hOldBrush);
}

  void drawThemeBackground(int hDC,
    int hwnd,
    RECT rect) 
{
	/* Do nothing */
}

  void enableDrag(boolean enabled) 
{
	/* Do nothing */
}

  void enableWidget(boolean enabled) 
{
	OS.EnableWindow (handle, enabled);
}

  void fillBackground(int hDC,
    int pixel,
    RECT rect) 
{
	if (rect.left  > rect.right || rect.top  > rect.bottom) return;
	int /*long*/ hPalette = display.hPalette;
	if (hPalette != 0) {
		OS.SelectPalette (hDC, hPalette, false);
		OS.RealizePalette (hDC);
	}
	OS.FillRect (hDC, rect, findBrush (pixel, OS.BS_SOLID));
}

  void fillImageBackground(int hDC,
    Control control,
    RECT rect) 
{
	if (rect.left  > rect.right || rect.top  > rect.bottom) return;
	if (control != null) {
		Image image = control.backgroundImage;
		if (image != null) {
			control.drawImageBackground (hDC, handle, image.handle, rect);
		}
	}
}

  void fillThemeBackground(int hDC,
    Control control,
    RECT rect) 
{
	if (rect.left  > rect.right || rect.top  > rect.bottom) return;
	if (control != null) {
		control.drawThemeBackground (hDC, handle, rect);
	}
}

 Control findBackgroundControl() 
{
	if (background != -1 || backgroundImage != null) return this;
	return (state & PARENT_BACKGROUND) != 0 ? parent.findBackgroundControl () : null;
}

 int findBrush(int value,
    int lbStyle) 
{
	return parent.findBrush (value, lbStyle);
}

 Cursor findCursor() 
{
	if (cursor != null) return cursor;
	return parent.findCursor ();
}

 Control findImageControl() 
{
	Control control = findBackgroundControl ();
	return control != null && control.backgroundImage != null ? control : null;
}

 Menu[] findMenus(Control control) 
{
	if (menu != null && this != control) return new Menu [] {menu};
	return new Menu [0];
}

 char findMnemonic(String string) 
{
	int index = 0;
	int length = string.length ();
	do {
		while (index <  length && string.charAt (index) != '&') index++;
		if (++index  >= length) return '\0';
		if (string.charAt (index) != '&') return string.charAt (index);
		index++;
	} while (index <  length);
 	return '\0';
}

 Control findThemeControl() 
{
	return background == -1 && backgroundImage == null ? parent.findThemeControl () : null;
}

  void fixChildren(Shell newShell,
    Shell oldShell,
    Decorations newDecorations,
    Decorations oldDecorations,
    Menu[] menus) 
{
	oldShell.fixShell (newShell, this);
	oldDecorations.fixDecorations (newDecorations, this, menus);
}

  void fixFocus(Control focusControl) 
{
	Shell shell = getShell ();
	Control control = this;
	while (control != shell && (control = control.parent) != null) {
		if (control.setFixedFocus ()) return;
	}
	shell.setSavedFocus (focusControl);
	OS.SetFocus (0);
}

 public boolean forceFocus() 
{
	checkWidget ();
	if (display.focusEvent == SWT.FocusOut) return false;
	Decorations shell = menuShell ();
	shell.setSavedFocus (this);
	if (!isEnabled () || !isVisible () || !isActive ()) return false;
	if (isFocusControl ()) return true;
	shell.setSavedFocus (null);
	/*
	* This code is intentionally commented.
	*
	* When setting focus to a control, it is
	* possible that application code can set
	* the focus to another control inside of
	* WM_SETFOCUS.  In this case, the original
	* control will no longer have the focus
	* and the call to setFocus() will return
	* false indicating failure.
	* 
	* We are still working on a solution at
	* this time.
	*/
//	if (OS.GetFocus () != OS.SetFocus (handle)) return false;
	OS.SetFocus (handle);
	if (isDisposed ()) return false;
	shell.setSavedFocus (this);
	return isFocusControl ();
}

Forces the receiver to have the keyboard focus, causing all keyboard events to be delivered to it.

  void forceResize() 
{
	if (parent == null) return;
	WINDOWPOS [] lpwp = parent.lpwp;
	if (lpwp == null) return;
	for (int i=0; i< lpwp.length; i++) {
		WINDOWPOS wp = lpwp [i];
		if (wp != null && wp.hwnd == handle) {
			/*
			* This code is intentionally commented.  All widgets that
			* are created by SWT have WS_CLIPSIBLINGS to ensure that
			* application code does not draw outside of the control.
			*/	
//			int count = parent.getChildrenCount ();
//			if (count  > 1) {
//				int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
//				if ((bits & OS.WS_CLIPSIBLINGS) == 0) wp.flags |= OS.SWP_NOCOPYBITS;
//			}
			SetWindowPos (wp.hwnd, 0, wp.x, wp.y, wp.cx, wp.cy, wp.flags);
			lpwp [i] = null;
			return;
		}	
	}
}

 public Accessible getAccessible() 
{
	checkWidget ();
	if (accessible == null) accessible = new_Accessible (this);
	return accessible;
}

Returns the accessible object for the receiver. If this is the first time this object is requested, then the object is created and returned.

 public Color getBackground() 
{
	checkWidget ();
	Control control = findBackgroundControl ();
	if (control == null) control = this;
	return Color.win32_new (display, control.getBackgroundPixel ());
}

Returns the receiver's background color.

Note: This operation is a hint and may be overridden by the platform. For example, on some versions of Windows the background of a TabFolder, is a gradient rather than a solid color.

 public Image getBackgroundImage() 
{
	checkWidget ();
	Control control = findBackgroundControl ();
	if (control == null) control = this;
	return control.backgroundImage;
}

Returns the receiver's background image.

 int getBackgroundPixel() 
{
	return background != -1 ? background :  defaultBackground ();
}

 public int getBorderWidth() 
{
	checkWidget ();
	int /*long*/ borderHandle = borderHandle ();
	int bits1 = OS.GetWindowLong (borderHandle, OS.GWL_EXSTYLE);
	if ((bits1 & OS.WS_EX_CLIENTEDGE) != 0) return OS.GetSystemMetrics (OS.SM_CXEDGE);
	if ((bits1 & OS.WS_EX_STATICEDGE) != 0) return OS.GetSystemMetrics (OS.SM_CXBORDER);
	int bits2 = OS.GetWindowLong (borderHandle, OS.GWL_STYLE);
	if ((bits2 & OS.WS_BORDER) != 0) return OS.GetSystemMetrics (OS.SM_CXBORDER);
	return 0;
}

Returns the receiver's border width.

 public Rectangle getBounds() 
{
	checkWidget ();
	forceResize ();
	RECT rect = new RECT ();
	OS.GetWindowRect (topHandle (), rect);
	int /*long*/ hwndParent = parent == null ? 0 : parent.handle;
	OS.MapWindowPoints (0, hwndParent, rect, 2);
	int width = rect.right - rect.left;
	int height =  rect.bottom - rect.top;
	return new Rectangle (rect.left, rect.top, width, height);
}

Returns a rectangle describing the receiver's size and location relative to its parent (or its display if its parent is null), unless the receiver is a shell. In this case, the location is relative to the display.

 String getClipboardText() 
{
	String string = "";
	if (OS.OpenClipboard (0)) {
		int /*long*/ hMem = OS.GetClipboardData (OS.IsUnicode ? OS.CF_UNICODETEXT : OS.CF_TEXT);
		if (hMem != 0) {
			/* Ensure byteCount is a multiple of 2 bytes on UNICODE platforms */
			int byteCount = OS.GlobalSize (hMem) / TCHAR.sizeof * TCHAR.sizeof;
			int /*long*/ ptr = OS.GlobalLock (hMem);
			if (ptr != 0) {
				/* Use the character encoding for the default locale */
				TCHAR buffer = new TCHAR (0, byteCount / TCHAR.sizeof);
				OS.MoveMemory (buffer, ptr, byteCount);
				string = buffer.toString (0, buffer.strlen ());
				OS.GlobalUnlock (hMem);
			}
		}
		OS.CloseClipboard ();
	}
	return string;
}

 int getCodePage() 
{
	if (OS.IsUnicode) return OS.CP_ACP;
	int /*long*/ hFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
	LOGFONT logFont = OS.IsUnicode ? (LOGFONT) new LOGFONTW () : new LOGFONTA ();
	OS.GetObject (hFont, LOGFONT.sizeof, logFont);
	int cs = logFont.lfCharSet & 0xFF;
	int [] lpCs = new int [8];
	if (OS.TranslateCharsetInfo (cs, lpCs, OS.TCI_SRCCHARSET)) {
		return lpCs [1];
	}
	return OS.GetACP ();
}

 public Cursor getCursor() 
{
	checkWidget ();
	return cursor;
}

Returns the receiver's cursor, or null if it has not been set.

When the mouse pointer passes over a control its appearance is changed to match the control's cursor.

 public boolean getDragDetect() 
{
	checkWidget ();
	return (state & DRAG_DETECT) != 0;
}

Returns true if the receiver is detecting drag gestures, and false otherwise.

 boolean getDrawing() 
{
	return drawCount < = 0;
}

 public boolean getEnabled() 
{
	checkWidget ();
	return OS.IsWindowEnabled (handle);
}

Returns true if the receiver is enabled, and false otherwise. A disabled control is typically not selectable from the user interface and draws with an inactive or "grayed" look.

 public Font getFont() 
{
	checkWidget ();
	if (font != null) return font;
	int /*long*/ hFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
	if (hFont == 0) hFont = defaultFont ();
	return Font.win32_new (display, hFont);
}

Returns the font that the receiver will use to paint textual information.

 public Color getForeground() 
{
	checkWidget ();
	return Color.win32_new (display, getForegroundPixel ());
}

Returns the foreground color that the receiver will use to draw.

 int getForegroundPixel() 
{
	return foreground != -1 ? foreground : defaultForeground ();
}

 public Object getLayoutData() 
{
	checkWidget ();
	return layoutData;
}

Returns layout data which is associated with the receiver.

 public Point getLocation() 
{
	checkWidget ();
	forceResize ();
	RECT rect = new RECT ();
	OS.GetWindowRect (topHandle (), rect);
	int /*long*/ hwndParent = parent == null ? 0 : parent.handle;
	OS.MapWindowPoints (0, hwndParent, rect, 2);
	return new Point (rect.left, rect.top);
}

Returns a point describing the receiver's location relative to its parent (or its display if its parent is null), unless the receiver is a shell. In this case, the point is relative to the display.

 public Menu getMenu() 
{
	checkWidget ();
	return menu;
}

Returns the receiver's pop up menu if it has one, or null if it does not. All controls may optionally have a pop up menu that is displayed when the user requests one for the control. The sequence of key strokes, button presses and/or button releases that are used to request a pop up menu is platform specific.

 public Monitor getMonitor() 
{
	checkWidget ();
	if (OS.IsWinCE || OS.WIN32_VERSION <  OS.VERSION (4, 10)) {
		return display.getPrimaryMonitor ();
	}
	int /*long*/ hmonitor = OS.MonitorFromWindow (handle, OS.MONITOR_DEFAULTTONEAREST);
	MONITORINFO lpmi = new MONITORINFO ();
	lpmi.cbSize = MONITORINFO.sizeof;
	OS.GetMonitorInfo (hmonitor, lpmi);
	Monitor monitor = new Monitor ();
	monitor.handle = hmonitor;
	monitor.x = lpmi.rcMonitor_left;
	monitor.y = lpmi.rcMonitor_top;
	monitor.width = lpmi.rcMonitor_right - lpmi.rcMonitor_left;
	monitor.height = lpmi.rcMonitor_bottom - lpmi.rcMonitor_top;
	monitor.clientX = lpmi.rcWork_left;
	monitor.clientY = lpmi.rcWork_top;
	monitor.clientWidth = lpmi.rcWork_right - lpmi.rcWork_left;
	monitor.clientHeight = lpmi.rcWork_bottom - lpmi.rcWork_top;
	return monitor;
}

Returns the receiver's monitor.

 public Composite getParent() 
{
	checkWidget ();
	return parent;
}

Returns the receiver's parent, which must be a Composite or null when the receiver is a shell that was created with null or a display for a parent.

 Control[] getPath() 
{
	int count = 0;
	Shell shell = getShell ();
	Control control = this;
	while (control != shell) {
		count++;
		control = control.parent;
	}
	control = this;
	Control [] result = new Control [count];
	while (control != shell) {
		result [--count] = control;
		control = control.parent;
	}
	return result;
}

 public Region getRegion() 
{
	checkWidget ();
	return region;
}

Returns the region that defines the shape of the control, or null if the control has the default shape.

 public Shell getShell() 
{
	checkWidget ();
	return parent.getShell ();
}

Returns the receiver's shell. For all controls other than shells, this simply returns the control's nearest ancestor shell. Shells return themselves, even if they are children of other shells.

 public Point getSize() 
{
	checkWidget ();
	forceResize ();
	RECT rect = new RECT ();
	OS.GetWindowRect (topHandle (), rect);
	int width = rect.right - rect.left;
	int height = rect.bottom - rect.top;
	return new Point (width, height);
}

Returns a point describing the receiver's size. The x coordinate of the result is the width of the receiver. The y coordinate of the result is the height of the receiver.

 public String getToolTipText() 
{
	checkWidget ();
	return toolTipText;
}

Returns the receiver's tool tip text, or null if it has not been set.

 public boolean getVisible() 
{
	checkWidget ();
	if (!getDrawing()) return (state & HIDDEN) == 0;
	int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
	return (bits & OS.WS_VISIBLE) != 0;
}

Returns true if the receiver is visible, and false otherwise.

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.

 boolean hasCursor() 
{
	RECT rect = new RECT ();
	if (!OS.GetClientRect (handle, rect)) return false;
	OS.MapWindowPoints (handle, 0, rect, 2);
	POINT pt = new POINT ();
	return OS.GetCursorPos (pt) && OS.PtInRect (rect, pt);
}

 boolean hasFocus() 
{
	/*
	* If a non-SWT child of the control has focus,
	* then this control is considered to have focus
	* even though it does not have focus in Windows.
	*/
	int /*long*/ hwndFocus = OS.GetFocus ();
	while (hwndFocus != 0) {
		if (hwndFocus == handle) return true;
		if (display.getControl (hwndFocus) != null) {
			return false;
		}
		hwndFocus = OS.GetParent (hwndFocus);
	}
	return false;
}

 public  void internal_dispose_GC(int hDC,
    GCData data) 
{
	checkWidget ();
	int /*long*/ hwnd = handle;
	if (data != null && data.hwnd != 0) {
		hwnd = data.hwnd;
	}
	if (data == null || data.ps == null) {
		OS.ReleaseDC (hwnd, hDC);
	} else {
		OS.EndPaint (hwnd, data.ps);
	}
}

Invokes platform specific functionality to dispose a GC handle.

IMPORTANT: This method is not part of the public API for Control. 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.

 public int internal_new_GC(GCData data) 
{
	checkWidget();
	int /*long*/ hwnd = handle;
	if (data != null && data.hwnd != 0) hwnd = data.hwnd;
	if (data != null) data.hwnd = hwnd;
	int /*long*/ hDC = 0;
	if (data == null || data.ps == null) {
		hDC = OS.GetDC (hwnd);
	} else {
		hDC = OS.BeginPaint (hwnd, data.ps);
	}
	if (hDC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
	if (data != null) {
		if (!OS.IsWinCE && OS.WIN32_VERSION  >= OS.VERSION (4, 10)) {
			int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;
			if ((data.style & mask) != 0) {
				data.layout = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.LAYOUT_RTL : 0;
			} else {
				int flags = OS.GetLayout (hDC);
				if ((flags & OS.LAYOUT_RTL) != 0) {
					data.style |= SWT.RIGHT_TO_LEFT | SWT.MIRRORED;
				} else {
					data.style |= SWT.LEFT_TO_RIGHT;
				}
			}
		} else {
			data.style |= SWT.LEFT_TO_RIGHT;
		}
		data.device = display;
		int foreground = getForegroundPixel ();
		if (foreground != OS.GetTextColor (hDC)) data.foreground = foreground;
		Control control = findBackgroundControl ();
		if (control == null) control = this;
		int background = control.getBackgroundPixel ();
		if (background != OS.GetBkColor (hDC)) data.background = background;
		data.font = font != null ? font : Font.win32_new (display, OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0));
		data.uiState = (int)/*64*/OS.SendMessage (hwnd, OS.WM_QUERYUISTATE, 0, 0);
	}
	return hDC;
}

Invokes platform specific functionality to allocate a new GC handle.

IMPORTANT: This method is not part of the public API for Control. 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.

 boolean isActive() 
{
	Dialog dialog = display.getModalDialog ();
	if (dialog != null) {
		Shell dialogShell = dialog.parent;
		if (dialogShell != null && !dialogShell.isDisposed ()) {
			if (dialogShell != getShell ()) return false;
		}
	}
	Shell shell = null;
	Shell [] modalShells = display.modalShells;
	if (modalShells != null) {
		int bits = SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL;
		int index = modalShells.length;
		while (--index  >= 0) {
			Shell modal = modalShells [index];
			if (modal != null) {
				if ((modal.style & bits) != 0) {
					Control control = this;
					while (control != null) {
						if (control == modal) break;
						control = control.parent;
					}
					if (control != modal) return false;
					break;
				}
				if ((modal.style & SWT.PRIMARY_MODAL) != 0) {
					if (shell == null) shell = getShell ();
					if (modal.parent == shell) return false;
				}
			}
		}
	}
	if (shell == null) shell = getShell ();
	return shell.getEnabled ();
}

 public boolean isEnabled() 
{
	checkWidget ();
	return getEnabled () && parent.isEnabled ();
}

Returns true if the receiver is enabled and all ancestors up to and including the receiver's nearest ancestor shell are enabled. Otherwise, false is returned. A disabled control is typically not selectable from the user interface and draws with an inactive or "grayed" look.

 boolean isFocusAncestor(Control control) 
{
	while (control != null && control != this && !(control instanceof Shell)) {
		control = control.parent;
	}
	return control == this;
}

 public boolean isFocusControl() 
{
	checkWidget ();
	Control focusControl = display.focusControl;
	if (focusControl != null && !focusControl.isDisposed ()) {
		return this == focusControl;
	}
	return hasFocus ();
}

Returns true if the receiver has the user-interface focus, and false otherwise.

 public boolean isReparentable() 
{
	checkWidget ();
	return true;
}

Returns true if the underlying operating system supports this reparenting, otherwise false

 boolean isShowing() 
{
	/*
	* This is not complete.  Need to check if the
	* widget is obscured by a parent or sibling.
	*/
	if (!isVisible ()) return false;
	Control control = this;
	while (control != null) {
		Point size = control.getSize ();
		if (size.x == 0 || size.y == 0) {
			return false;
		}
		control = control.parent;
	}
	return true;
	/*
	* Check to see if current damage is included.
	*/
//	if (!OS.IsWindowVisible (handle)) return false;
//	int flags = OS.DCX_CACHE | OS.DCX_CLIPCHILDREN | OS.DCX_CLIPSIBLINGS;
//	int /*long*/ hDC = OS.GetDCEx (handle, 0, flags);
//	int result = OS.GetClipBox (hDC, new RECT ());
//	OS.ReleaseDC (handle, hDC);
//	return result != OS.NULLREGION;
}

 boolean isTabGroup() 
{
	Control [] tabList = parent._getTabList ();
	if (tabList != null) {
		for (int i=0; i< tabList.length; i++) {
			if (tabList [i] == this) return true;
		}
	}
	int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
	return (bits & OS.WS_TABSTOP) != 0;
}

 boolean isTabItem() 
{
	Control [] tabList = parent._getTabList ();
	if (tabList != null) {
		for (int i=0; i< tabList.length; i++) {
			if (tabList [i] == this) return false;
		}
	}
	int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
	if ((bits & OS.WS_TABSTOP) != 0) return false;
	int /*long*/ code = OS.SendMessage (handle, OS.WM_GETDLGCODE, 0, 0);
	if ((code & OS.DLGC_STATIC) != 0) return false;
	if ((code & OS.DLGC_WANTALLKEYS) != 0) return false;
	if ((code & OS.DLGC_WANTARROWS) != 0) return false;
	if ((code & OS.DLGC_WANTTAB) != 0) return false;
	return true;
}

 public boolean isVisible() 
{
	checkWidget ();
	if (OS.IsWindowVisible (handle)) return true;
	return getVisible () && parent.isVisible ();
}

Returns true if the receiver is visible and all ancestors up to and including the receiver's nearest ancestor shell are visible. Otherwise, false is returned.

  void mapEvent(int hwnd,
    Event event) 
{
	if (hwnd != handle) {
		POINT point = new POINT ();
		point.x = event.x;
		point.y = event.y;
		OS.MapWindowPoints (hwnd, handle, point, 1);
		event.x = point.x;
		event.y = point.y;
	}
}

  void markLayout(boolean changed,
    boolean all) 
{
	/* Do nothing */
}

 Decorations menuShell() 
{
	return parent.menuShell ();
}

 boolean mnemonicHit(char key) 
{
	return false;
}

 boolean mnemonicMatch(char key) 
{
	return false;
}

 public  void moveAbove(Control control) 
{
	checkWidget ();
	int /*long*/ topHandle = topHandle (), hwndAbove = OS.HWND_TOP;
	if (control != null) {
		if (control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
		if (parent != control.parent) return;
		int /*long*/ hwnd = control.topHandle ();
		if (hwnd == 0 || hwnd == topHandle) return;
		hwndAbove = OS.GetWindow (hwnd, OS.GW_HWNDPREV);
		/*
		* Bug in Windows.  For some reason, when GetWindow ()
		* with GW_HWNDPREV is used to query the previous window
		* in the z-order with the first child, Windows returns
		* the first child instead of NULL.  The fix is to detect
		* this case and move the control to the top.
		*/
		if (hwndAbove == 0 || hwndAbove == hwnd) {
			hwndAbove = OS.HWND_TOP;
		}
	}
	int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE; 
	SetWindowPos (topHandle, hwndAbove, 0, 0, 0, 0, flags);
}

Moves the receiver above the specified control in the drawing order. If the argument is null, then the receiver is moved to the top of the drawing order. The control at the top of the drawing order will not be covered by other controls even if they occupy intersecting areas.

 public  void moveBelow(Control control) 
{
	checkWidget ();
	int /*long*/ topHandle = topHandle (), hwndAbove = OS.HWND_BOTTOM;
	if (control != null) {
		if (control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
		if (parent != control.parent) return;
		hwndAbove = control.topHandle ();
	} else {
		/*
		* Bug in Windows.  When SetWindowPos() is called
		* with HWND_BOTTOM on a dialog shell, the dialog
		* and the parent are moved to the bottom of the
		* desktop stack.  The fix is to move the dialog
		* to the bottom of the dialog window stack by
		* moving behind the first dialog child.
		*/
		Shell shell = getShell ();
		if (this == shell && parent != null) {
			/* 
			* Bug in Windows.  For some reason, when GetWindow ()
			* with GW_HWNDPREV is used to query the previous window
			* in the z-order with the first child, Windows returns
			* the first child instead of NULL.  The fix is to detect
			* this case and do nothing because the control is already
			* at the bottom.
			*/
			int /*long*/ hwndParent = parent.handle, hwnd = hwndParent;
			hwndAbove = OS.GetWindow (hwnd, OS.GW_HWNDPREV);
			while (hwndAbove != 0 && hwndAbove != hwnd) {
				if (OS.GetWindow (hwndAbove, OS.GW_OWNER) == hwndParent) break;
				hwndAbove = OS.GetWindow (hwnd = hwndAbove, OS.GW_HWNDPREV);
			}
			if (hwndAbove == hwnd) return;
		}
	}
	if (hwndAbove == 0 || hwndAbove == topHandle) return;
	int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE; 
	SetWindowPos (topHandle, hwndAbove, 0, 0, 0, 0, flags);
}

Moves the receiver below the specified control in the drawing order. If the argument is null, then the receiver is moved to the bottom of the drawing order. The control at the bottom of the drawing order will be covered by all other controls which occupy intersecting areas.

 Accessible new_Accessible(Control control) 
{
	return Accessible.internal_new_Accessible (this);
}

 GC new_GC(GCData data) 
{
	return GC.win32_new (this, data);
}

 public  void pack() 
{
	checkWidget ();
	pack (true);
}

Causes the receiver to be resized to its preferred size. For a composite, this involves computing the preferred size from its layout, if there is one.

 public  void pack(boolean changed) 
{
	checkWidget ();
	setSize (computeSize (SWT.DEFAULT, SWT.DEFAULT, changed));
}

Causes the receiver to be resized to its preferred size. For a composite, this involves computing the preferred size from its layout, if there is one.

If the changed flag is true, it indicates that the receiver's contents have changed, therefore any caches that a layout manager containing the control may have been keeping need to be flushed. When the control is resized, the changed flag will be false, so layout manager caches can be retained.

 public boolean print(GC gc) 
{
	checkWidget ();
	if (gc == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
	if (!OS.IsWinCE && OS.WIN32_VERSION  >= OS.VERSION (5, 1)) {
		int /*long*/ topHandle = topHandle ();
		int /*long*/ hdc = gc.handle;
		int state = 0;
		int /*long*/ gdipGraphics = gc.getGCData().gdipGraphics;
		if (gdipGraphics != 0) {
			int /*long*/ clipRgn = 0;
			Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone);
			int /*long*/ 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;
			int /*long*/ 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);
			}
		}
		if (OS.IsWinCE) {
			OS.UpdateWindow (topHandle);
		} else {
			int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
			OS.RedrawWindow (topHandle, null, 0, flags);
		}
		printWidget (topHandle, hdc, gc);
		if (gdipGraphics != 0) {
			OS.RestoreDC(hdc, state);
			Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc);
		}
		return true;
	}
	return false;
}

Prints the receiver and all children.

  void printWidget(int hwnd,
    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)) {
		/*
		* Bug in Windows.  When PrintWindow() will only draw that
		* portion of a control that is not obscured by the shell.
		* The fix is temporarily reparent the window to the desktop,
		* call PrintWindow() then reparent the window back.
		*/
		int /*long*/ hwndParent = OS.GetParent (hwnd);
		int /*long*/ hwndShell = hwndParent;
		while (OS.GetParent (hwndShell) != 0) {
			if (OS.GetWindow (hwndShell, OS.GW_OWNER) != 0) break;
			hwndShell = OS.GetParent (hwndShell);
		}
		RECT rect1 = new RECT ();
		OS.GetWindowRect (hwnd, rect1);
		boolean fixPrintWindow = !OS.IsWindowVisible(hwnd);
		if (!fixPrintWindow) {
			RECT rect2 = new RECT ();
			OS.GetWindowRect (hwndShell, rect2);
			OS.IntersectRect (rect2, rect1, rect2);
			fixPrintWindow = !OS.EqualRect (rect2, rect1);
		}
		/*
		* Bug in Windows. PrintWindow() does not print portions
		* of the receiver that are clipped out using SetWindowRgn()
		* in a parent.  The fix is temporarily reparent the window
		* to the desktop, call PrintWindow() then reparent the window
		* back.
		*/
		if (!fixPrintWindow) {
			int /*long*/ rgn = OS.CreateRectRgn(0, 0, 0, 0);
			int /*long*/ parent = OS.GetParent(hwnd);
			while (parent != hwndShell && !fixPrintWindow) {
				if (OS.GetWindowRgn(parent, rgn) != 0) {
					fixPrintWindow = true;
				}
				parent = OS.GetParent(parent);
			}
			OS.DeleteObject(rgn);
		}
		int bits = OS.GetWindowLong (hwnd, OS.GWL_STYLE);
		int /*long*/ hwndInsertAfter = OS.GetWindow (hwnd, OS.GW_HWNDPREV);
		/*
		* Bug in Windows.  For some reason, when GetWindow ()
		* with GW_HWNDPREV is used to query the previous window
		* in the z-order with the first child, Windows returns
		* the first child instead of NULL.  The fix is to detect
		* this case and move the control to the top.
		*/
		if (hwndInsertAfter == 0 || hwndInsertAfter == hwnd) {
			hwndInsertAfter = OS.HWND_TOP;
		}
		if (fixPrintWindow) {
			int x = OS.GetSystemMetrics (OS.SM_XVIRTUALSCREEN);
			int y = OS.GetSystemMetrics (OS.SM_YVIRTUALSCREEN);	
			int width = OS.GetSystemMetrics (OS.SM_CXVIRTUALSCREEN);
			int height = OS.GetSystemMetrics (OS.SM_CYVIRTUALSCREEN);
			int flags = OS.SWP_NOSIZE | OS.SWP_NOZORDER | OS.SWP_NOACTIVATE | OS.SWP_DRAWFRAME;
			if ((bits & OS.WS_VISIBLE) != 0) {
				OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 0, 0);
			}
			SetWindowPos (hwnd, 0, x + width, y + height, 0, 0, flags);
			OS.SetParent (hwnd, 0);
			if ((bits & OS.WS_VISIBLE) != 0) {
				OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 1, 0);
			}
		}
		if ((bits & OS.WS_VISIBLE) == 0) {
			OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 1, 0);
		}
		success = OS.PrintWindow (hwnd, hdc, 0);
		if ((bits & OS.WS_VISIBLE) == 0) {
			OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 0, 0);
		}
		if (fixPrintWindow) {
			if ((bits & OS.WS_VISIBLE) != 0) {
				OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 0, 0);
			}
			OS.SetParent (hwnd, hwndParent);
			OS.MapWindowPoints (0, hwndParent, rect1, 2);
			int flags = OS.SWP_NOSIZE | OS.SWP_NOACTIVATE | OS.SWP_DRAWFRAME;
			SetWindowPos (hwnd, hwndInsertAfter, rect1.left, rect1.top, rect1.right - rect1.left, rect1.bottom - rect1.top, flags);
			if ((bits & OS.WS_VISIBLE) != 0) {
				OS.DefWindowProc (hwnd, OS.WM_SETREDRAW, 1, 0);
			}
		}
	}
	/*
	* 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) {
		int flags = OS.PRF_CLIENT | OS.PRF_NONCLIENT | OS.PRF_ERASEBKGND | OS.PRF_CHILDREN;
		OS.SendMessage (hwnd, OS.WM_PRINT, hdc, flags);
	}
}

 public  void redraw() 
{
	checkWidget ();
	redraw (false);
}

Causes the entire bounds of the receiver to be marked as needing to be redrawn. The next time a paint request is processed, the control will be completely painted, including the background.

  void redraw(boolean all) 
{
//	checkWidget ();
	if (!OS.IsWindowVisible (handle)) return;
	if (OS.IsWinCE) {
		OS.InvalidateRect (handle, null, true);
	} else {
		int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
		if (all) flags |= OS.RDW_ALLCHILDREN;
		OS.RedrawWindow (handle, null, 0, flags);
	}
}

 public  void redraw(int x,
    int y,
    int width,
    int height,
    boolean all) 
{
	checkWidget ();
	if (width < = 0 || height < = 0) return;
	if (!OS.IsWindowVisible (handle)) return;
	RECT rect = new RECT ();
	OS.SetRect (rect, x, y, x + width, y + height);
	if (OS.IsWinCE) {
		OS.InvalidateRect (handle, rect, true);
	} else {
		int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
		if (all) flags |= OS.RDW_ALLCHILDREN;
		OS.RedrawWindow (handle, rect, 0, flags);
	}
}

Causes the rectangular area of the receiver specified by the arguments to be marked as needing to be redrawn. The next time a paint request is processed, that area of the receiver will be painted, including the background. If the all flag is true, any children of the receiver which intersect with the specified area will also paint their intersecting areas. If the all flag is false, the children will not be painted.

 boolean redrawChildren() 
{
	if (!OS.IsWindowVisible (handle)) return false;
	Control control = findBackgroundControl ();
	if (control == null) {
		if ((state & THEME_BACKGROUND) != 0) {
			if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
				OS.InvalidateRect (handle, null, true);
				return true;
			}
		}
	} else {
		if (control.backgroundImage != null) {
			OS.InvalidateRect (handle, null, true);
			return true;
		}
	}
	return false;
}

  void register() 
{
	display.addControl (handle, this);
}

  void releaseHandle() 
{
	super.releaseHandle ();
	handle = 0;
	parent = null;
}

  void releaseParent() 
{
	parent.removeControl (this);
}

  void releaseWidget() 
{
	super.releaseWidget ();
	if (OS.IsDBLocale) {
		OS.ImmAssociateContext (handle, 0);
	}
	if (toolTipText != null) {
		setToolTipText (getShell (), null);
	}
	toolTipText = null;
	if (menu != null && !menu.isDisposed ()) {
		menu.dispose ();
	}
	backgroundImage = null;
	menu = null;
	cursor = null;
	unsubclass ();
	deregister ();
	layoutData = null;
	if (accessible != null) {
		accessible.internal_dispose_Accessible ();
	}
	accessible = null;
	region = null;
	font = null;
}

 public  void removeControlListener(ControlListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Move, listener);
	eventTable.unhook (SWT.Resize, listener);
}

Removes the listener from the collection of listeners who will be notified when the control is moved or resized.

 public  void removeDragDetectListener(DragDetectListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.DragDetect, listener);
}

Removes the listener from the collection of listeners who will be notified when a drag gesture occurs.

 public  void removeFocusListener(FocusListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.FocusIn, listener);
	eventTable.unhook (SWT.FocusOut, listener);
}

Removes the listener from the collection of listeners who will be notified when the control gains or loses focus.

 public  void removeHelpListener(HelpListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Help, listener);
}

Removes the listener from the collection of listeners who will be notified when the help events are generated for the control.

 public  void removeKeyListener(KeyListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.KeyUp, listener);
	eventTable.unhook (SWT.KeyDown, listener);
}

Removes the listener from the collection of listeners who will be notified when keys are pressed and released on the system keyboard.

 public  void removeMenuDetectListener(MenuDetectListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.MenuDetect, listener);
}

Removes the listener from the collection of listeners who will be notified when the platform-specific context menu trigger has occurred.

 public  void removeMouseListener(MouseListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.MouseDown, listener);
	eventTable.unhook (SWT.MouseUp, listener);
	eventTable.unhook (SWT.MouseDoubleClick, listener);
}

Removes the listener from the collection of listeners who will be notified when mouse buttons are pressed and released.

 public  void removeMouseMoveListener(MouseMoveListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.MouseMove, listener);
}

Removes the listener from the collection of listeners who will be notified when the mouse moves.

 public  void removeMouseTrackListener(MouseTrackListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.MouseEnter, listener);
	eventTable.unhook (SWT.MouseExit, listener);
	eventTable.unhook (SWT.MouseHover, listener);
}

Removes the listener from the collection of listeners who will be notified when the mouse passes or hovers over controls.

 public  void removeMouseWheelListener(MouseWheelListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.MouseWheel, listener);
}

Removes the listener from the collection of listeners who will be notified when the mouse wheel is scrolled.

 public  void removePaintListener(PaintListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook(SWT.Paint, listener);
}

Removes the listener from the collection of listeners who will be notified when the receiver needs to be painted.

 public  void removeTraverseListener(TraverseListener listener) 
{
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Traverse, listener);
}

Removes the listener from the collection of listeners who will be notified when traversal events occur.

 boolean sendFocusEvent(int type) 
{
	Shell shell = getShell ();
	/*
	* Feature in Windows.  During the processing of WM_KILLFOCUS,
	* when the focus window is queried using GetFocus(), it has
	* already been assigned to the new window.  The fix is to
	* remember the control that is losing or gaining focus and
	* answer it during WM_KILLFOCUS.  If a WM_SETFOCUS occurs
	* during WM_KILLFOCUS, the focus control needs to be updated
	* to the current control.  At any other time, the focus
	* control matches Windows.
	*/
	Display display = this.display;
	display.focusEvent = type;
	display.focusControl = this;
	sendEvent (type);
	// widget could be disposed at this point
	display.focusEvent = SWT.None;
	display.focusControl = null;
	/*
	* It is possible that the shell may be
	* disposed at this point.  If this happens
	* don't send the activate and deactivate
	* events.
	*/	
	if (!shell.isDisposed ()) {
		switch (type) {
			case SWT.FocusIn:
				shell.setActiveControl (this);
				break;
			case SWT.FocusOut:
				if (shell != display.getActiveShell ()) {
					shell.setActiveControl (null);
				}
				break;
		}
	}
	return true;
}

  void sendMove() 
{
	sendEvent (SWT.Move);
}

  void sendResize() 
{
	sendEvent (SWT.Resize);
}

  void setBackground() 
{
	Control control = findBackgroundControl ();
	if (control == null) control = this;
	if (control.backgroundImage != null) {
		Shell shell = getShell ();
		shell.releaseBrushes ();
		setBackgroundImage (control.backgroundImage.handle);
	} else {
		setBackgroundPixel (control.background == -1 ? control.defaultBackground() : control.background);
	}
}

 public  void setBackground(Color color) 
{
	checkWidget ();
	int pixel = -1;
	if (color != null) {
		if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		pixel = color.handle;
	}
	if (pixel == background) return;
	background = pixel;
	updateBackgroundColor ();
}

Sets the receiver's background color to the color specified by the argument, or to the default system color for the control if the argument is null.

Note: This operation is a hint and may be overridden by the platform. For example, on Windows the background of a Button cannot be changed.

 public  void setBackgroundImage(Image image) 
{
	checkWidget ();
	if (image != null) {
		if (image.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
		if (image.type != SWT.BITMAP) error (SWT.ERROR_INVALID_ARGUMENT);
	}
	if (backgroundImage == image) return;
	backgroundImage = image;
	Shell shell = getShell ();
	shell.releaseBrushes ();
	updateBackgroundImage ();
}

Sets the receiver's background image to the image specified by the argument, or to the default system color for the control if the argument is null. The background image is tiled to fill the available space.

Note: This operation is a hint and may be overridden by the platform. For example, on Windows the background of a Button cannot be changed.

  void setBackgroundImage(int hBitmap) 
{
	if (OS.IsWinCE) {
		OS.InvalidateRect (handle, null, true);
	} else {
		int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
		OS.RedrawWindow (handle, null, 0, flags);
	}
}

  void setBackgroundPixel(int pixel) 
{
	if (OS.IsWinCE) {
		OS.InvalidateRect (handle, null, true);
	} else {
		int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
		OS.RedrawWindow (handle, null, 0, flags);
	}
}

 public  void setBounds(Rectangle rect) 
{
	checkWidget ();
	if (rect == null) error (SWT.ERROR_NULL_ARGUMENT);
	setBounds (rect.x, rect.y, rect.width, rect.height);
}

Sets the receiver's size and location to the rectangular area specified by the argument. The x and y fields of the rectangle are relative to the receiver's parent (or its display if its parent is null).

Note: Attempting to set the width or height of the receiver to a negative number will cause that value to be set to zero instead.

 public  void setBounds(int x,
    int y,
    int width,
    int height) 
{
	checkWidget ();
	int flags = OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE;
	setBounds (x, y, Math.max (0, width), Math.max (0, height), flags);
}

Sets the receiver's size and location to the rectangular area specified by the arguments. The x and y arguments are relative to the receiver's parent (or its display if its parent is null), unless the receiver is a shell. In this case, the x and y arguments are relative to the display.

Note: Attempting to set the width or height of the receiver to a negative number will cause that value to be set to zero instead.

  void setBounds(int x,
    int y,
    int width,
    int height,
    int flags) 
{
	setBounds (x, y, width, height, flags, true);
}

  void setBounds(int x,
    int y,
    int width,
    int height,
    int flags,
    boolean defer) 
{
	if (findImageControl () != null) {
		if (backgroundImage == null) flags |= OS.SWP_NOCOPYBITS;
	} else {
		if (OS.GetWindow (handle, OS.GW_CHILD) == 0) {
			if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
				if (findThemeControl () != null) flags |= OS.SWP_NOCOPYBITS;
			}
		}
	}
	int /*long*/ topHandle = topHandle ();
	if (defer && parent != null) {
		forceResize ();
		if (parent.lpwp != null) {
			int index = 0;
			WINDOWPOS [] lpwp = parent.lpwp;
			while (index <  lpwp.length) {
				if (lpwp [index] == null) break;
				index ++;
			}
			if (index == lpwp.length) {
				WINDOWPOS [] newLpwp = new WINDOWPOS [lpwp.length + 4];
				System.arraycopy (lpwp, 0, newLpwp, 0, lpwp.length);
				parent.lpwp = lpwp = newLpwp;
			}
			WINDOWPOS wp = new WINDOWPOS ();
			wp.hwnd = topHandle;
			wp.x = x;
			wp.y = y;
			wp.cx = width;
			wp.cy = height;
			wp.flags = flags;
			lpwp [index] = wp;
			return;
		}
	}
	SetWindowPos (topHandle, 0, x, y, width, height, flags);
}

 public  void setCapture(boolean capture) 
{
	checkWidget ();
	if (capture) {
		OS.SetCapture (handle);
	} else {
		if (OS.GetCapture () == handle) {
			OS.ReleaseCapture ();
		}
	}
}

If the argument is true, causes the receiver to have all mouse events delivered to it until the method is called with false as the argument. Note that on some platforms, a mouse button must currently be down for capture to be assigned.

  void setCursor() 
{
	int /*long*/ lParam = OS.MAKELPARAM (OS.HTCLIENT, OS.WM_MOUSEMOVE);
	OS.SendMessage (handle, OS.WM_SETCURSOR, handle, lParam);
}

 public  void setCursor(Cursor cursor) 
{
	checkWidget ();
	if (cursor != null && cursor.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	this.cursor = cursor;
	if (OS.IsWinCE) {
		int /*long*/ hCursor = cursor != null ? cursor.handle : 0;
		OS.SetCursor (hCursor);
		return;
	}
	int /*long*/ hwndCursor = OS.GetCapture ();
	if (hwndCursor == 0) {
		POINT pt = new POINT ();
		if (!OS.GetCursorPos (pt)) return;
		int /*long*/ hwnd = hwndCursor = OS.WindowFromPoint (pt);
		while (hwnd != 0 && hwnd != handle) {
			hwnd = OS.GetParent (hwnd);
		}
		if (hwnd == 0) return;
	}
	Control control = display.getControl (hwndCursor);
	if (control == null) control = this;
	control.setCursor ();
}

Sets the receiver's cursor to the cursor specified by the argument, or to the default cursor for that kind of control if the argument is null.

When the mouse pointer passes over a control its appearance is changed to match the control's cursor.

  void setDefaultFont() 
{
	int /*long*/ hFont = display.getSystemFont ().handle;
	OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
}

 public  void setDragDetect(boolean dragDetect) 
{
	checkWidget ();
	if (dragDetect) {
		state |= DRAG_DETECT;
	} else {
		state &= ~DRAG_DETECT;
	}
	enableDrag (dragDetect);
}

Sets the receiver's drag detect state. If the argument is true, the receiver will detect drag gestures, otherwise these gestures will be ignored.

 public  void setEnabled(boolean enabled) 
{
	checkWidget ();
	/*
	* Feature in Windows.  If the receiver has focus, disabling
	* the receiver causes no window to have focus.  The fix is
	* to assign focus to the first ancestor window that takes
	* focus.  If no window will take focus, set focus to the
	* desktop.
	*/
	Control control = null;
	boolean fixFocus = false;
	if (!enabled) {
		if (display.focusEvent != SWT.FocusOut) {
			control = display.getFocusControl ();
			fixFocus = isFocusAncestor (control);
		}
	}
	enableWidget (enabled);
	if (fixFocus) fixFocus (control);
}

Enables the receiver if the argument is true, and disables it otherwise. A disabled control is typically not selectable from the user interface and draws with an inactive or "grayed" look.

 boolean setFixedFocus() 
{
	if ((style & SWT.NO_FOCUS) != 0) return false;
	return forceFocus ();
}

 public boolean setFocus() 
{
	checkWidget ();
	if ((style & SWT.NO_FOCUS) != 0) return false;
	return forceFocus ();
}

Causes the receiver to have the keyboard focus, such that all keyboard events will be delivered to it. Focus reassignment will respect applicable platform constraints.

 public  void setFont(Font font) 
{
	checkWidget ();
	int /*long*/ hFont = 0;
	if (font != null) { 
		if (font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		hFont = font.handle;
	}
	this.font = font;
	if (hFont == 0) hFont = defaultFont ();
	OS.SendMessage (handle, OS.WM_SETFONT, hFont, 1);
}

Sets the font that the receiver will use to paint textual information to the font specified by the argument, or to the default font for that kind of control if the argument is null.

 public  void setForeground(Color color) 
{
	checkWidget ();
	int pixel = -1;
	if (color != null) {
		if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		pixel = color.handle;
	}
	if (pixel == foreground) return;
	foreground = pixel;
	setForegroundPixel (pixel);
}

Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the control if the argument is null.

Note: This operation is a hint and may be overridden by the platform.

  void setForegroundPixel(int pixel) 
{
	OS.InvalidateRect (handle, null, true);
}

 public  void setLayoutData(Object layoutData) 
{
	checkWidget ();
	this.layoutData = layoutData;
}

Sets the layout data associated with the receiver to the argument.

 public  void setLocation(Point location) 
{
	checkWidget ();
	if (location == null) error (SWT.ERROR_NULL_ARGUMENT);
	setLocation (location.x, location.y);
}

Sets the receiver's location to the point specified by the arguments which are relative to the receiver's parent (or its display if its parent is null), unless the receiver is a shell. In this case, the point is relative to the display.

 public  void setLocation(int x,
    int y) 
{
	checkWidget ();
	int flags = OS.SWP_NOSIZE | OS.SWP_NOZORDER | OS.SWP_NOACTIVATE;
	/*
	* Feature in WinCE.  The SWP_DRAWFRAME flag for SetWindowPos()
	* causes a WM_SIZE message to be sent even when the SWP_NOSIZE
	* flag is specified.  The fix is to set SWP_DRAWFRAME only when
	* not running on WinCE.
	*/
	if (!OS.IsWinCE) flags |= OS.SWP_DRAWFRAME;
	setBounds (x, y, 0, 0, flags);
}

Sets the receiver's location to the point specified by the arguments which are relative to the receiver's parent (or its display if its parent is null), unless the receiver is a shell. In this case, the point is relative to the display.

 public  void setMenu(Menu menu) 
{
	checkWidget ();
	if (menu != null) {
		if (menu.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
		if ((menu.style & SWT.POP_UP) == 0) {
			error (SWT.ERROR_MENU_NOT_POP_UP);
		}
		if (menu.parent != menuShell ()) {
			error (SWT.ERROR_INVALID_PARENT);
		}
	}
	this.menu = menu;
}

Sets the receiver's pop up menu to the argument. All controls may optionally have a pop up menu that is displayed when the user requests one for the control. The sequence of key strokes, button presses and/or button releases that are used to request a pop up menu is platform specific.

Note: Disposing of a control that has a pop up menu will dispose of the menu. To avoid this behavior, set the menu to null before the control is disposed.

 public boolean setParent(Composite parent) 
{
	checkWidget ();
	if (parent == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (parent.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (this.parent == parent) return true;
	if (!isReparentable ()) return false;
	releaseParent ();
	Shell newShell = parent.getShell (), oldShell = getShell ();
	Decorations newDecorations = parent.menuShell (), oldDecorations = menuShell ();
	if (oldShell != newShell || oldDecorations != newDecorations) {
		Menu [] menus = oldShell.findMenus (this);
		fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
	}
	int /*long*/ topHandle = topHandle ();
	if (OS.SetParent (topHandle, parent.handle) == 0) return false;
	this.parent = parent;
	int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE; 
	SetWindowPos (topHandle, OS.HWND_BOTTOM, 0, 0, 0, 0, flags);
	return true;
}

Changes the parent of the widget to be the one provided if the underlying operating system supports this feature. Returns true if the parent is successfully changed.

 boolean setRadioFocus(boolean tabbing) 
{
	return false;
}

 boolean setRadioSelection(boolean value) 
{
	return false;
}

 public  void setRedraw(boolean redraw) 
{
	checkWidget ();
	/*
	 * Feature in Windows.  When WM_SETREDRAW is used to turn
	 * off drawing in a widget, it clears the WS_VISIBLE bits
	 * and then sets them when redraw is turned back on.  This
	 * means that WM_SETREDRAW will make a widget unexpectedly
	 * visible.  The fix is to track the visibility state while
	 * drawing is turned off and restore it when drawing is
	 * turned back on.
	 */
	if (drawCount == 0) {
		int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
		if ((bits & OS.WS_VISIBLE) == 0) state |= HIDDEN;
	}
	if (redraw) {
		if (--drawCount == 0) {
			int /*long*/ topHandle = topHandle ();
			OS.SendMessage (topHandle, OS.WM_SETREDRAW, 1, 0);
			if (handle != topHandle) OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
			if ((state & HIDDEN) != 0) {
				state &= ~HIDDEN;
				OS.ShowWindow (topHandle, OS.SW_HIDE);
				if (handle != topHandle) OS.ShowWindow (handle, OS.SW_HIDE);
			} else {
				if (OS.IsWinCE) {
					OS.InvalidateRect (topHandle, null, true);
					if (handle != topHandle) OS.InvalidateRect (handle, null, true);
				} else {
					int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
					OS.RedrawWindow (topHandle, null, 0, flags);
				}
			}
		}
	} else {
		if (drawCount++ == 0) {
			int /*long*/ topHandle = topHandle ();
			OS.SendMessage (topHandle, OS.WM_SETREDRAW, 0, 0);
			if (handle != topHandle) OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
		}
	}
}

If the argument is false, causes subsequent drawing operations in the receiver to be ignored. No drawing of any kind can occur in the receiver until the flag is set to true. Graphics operations that occurred while the flag was false are lost. When the flag is set to true, the entire widget is marked as needing to be redrawn. Nested calls to this method are stacked.

Note: This operation is a hint and may not be supported on some platforms or for some widgets.

 public  void setRegion(Region region) 
{
	checkWidget ();
	if (region != null && region.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
	int /*long*/ hRegion = 0;
	if (region != null) {
		hRegion = OS.CreateRectRgn (0, 0, 0, 0);
		OS.CombineRgn (hRegion, region.handle, hRegion, OS.RGN_OR);
	}
	OS.SetWindowRgn (handle, hRegion, true);
	this.region = region;
}

Sets the shape of the control to the region specified by the argument. When the argument is null, the default shape of the control is restored.

 boolean setSavedFocus() 
{
	return forceFocus ();
}

 public  void setSize(Point size) 
{
	checkWidget ();
	if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
	setSize (size.x, size.y);
}

Sets the receiver's size to the point specified by the argument.

Note: Attempting to set the width or height of the receiver to a negative number will cause them to be set to zero instead.

 public  void setSize(int width,
    int height) 
{
	checkWidget ();
	int flags = OS.SWP_NOMOVE | OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE;
	setBounds (0, 0, Math.max (0, width), Math.max (0, height), flags);
}

Sets the receiver's size to the point specified by the arguments.

Note: Attempting to set the width or height of the receiver to a negative number will cause that value to be set to zero instead.

 boolean setTabItemFocus() 
{
	if (!isShowing ()) return false;
	return forceFocus ();
}

 public  void setToolTipText(String string) 
{
	checkWidget ();
	toolTipText = string;
	setToolTipText (getShell (), string);
}

Sets the receiver's tool tip text to the argument, which may be null indicating that the default tool tip for the control will be shown. For a control that has a default tool tip, such as the Tree control on Windows, setting the tool tip text to an empty string replaces the default, causing no tool tip text to be shown.

The mnemonic indicator (character '&') is not displayed in a tool tip. To display a single '&' in the tool tip, the character '&' can be escaped by doubling it in the string.

  void setToolTipText(Shell shell,
    String string) 
{
	shell.setToolTipText (handle, string);
}

 public  void setVisible(boolean visible) 
{
	checkWidget ();
	if (!getDrawing()) {
		if (((state & HIDDEN) == 0) == visible) return;
	} else {
		int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
		if (((bits & OS.WS_VISIBLE) != 0) == visible) return;
	}
	if (visible) {
		sendEvent (SWT.Show);
		if (isDisposed ()) return;
	}
	/*
	* Feature in Windows.  If the receiver has focus, hiding
	* the receiver causes no window to have focus.  The fix is
	* to assign focus to the first ancestor window that takes
	* focus.  If no window will take focus, set focus to the
	* desktop.
	*/
	Control control = null;
	boolean fixFocus = false;
	if (!visible) {
		if (display.focusEvent != SWT.FocusOut) {
			control = display.getFocusControl ();
			fixFocus = isFocusAncestor (control);
		}
	}
	if (!getDrawing()) {
		state = visible ? state & ~HIDDEN : state | HIDDEN;
	} else {
		showWidget (visible);
		if (isDisposed ()) return;
	}
	if (!visible) {
		sendEvent (SWT.Hide);
		if (isDisposed ()) return;
	}
	if (fixFocus) fixFocus (control);
}

Marks the receiver as visible if the argument is true, and marks it invisible otherwise.

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.

  void showWidget(boolean visible) 
{
	int /*long*/ topHandle = topHandle ();
	OS.ShowWindow (topHandle, visible ? OS.SW_SHOW : OS.SW_HIDE);
	if (handle != topHandle) OS.ShowWindow (handle, visible ? OS.SW_SHOW : OS.SW_HIDE);
}

  void sort(int[] items) 
{
	/* Shell Sort from K&R, pg 108 */
	int length = items.length;
	for (int gap=length/2; gap >0; gap/=2) {
		for (int i=gap; i< length; i++) {
			for (int j=i-gap; j >=0; j-=gap) {
		   		if (items [j] < = items [j + gap]) {
					int swap = items [j];
					items [j] = items [j + gap];
					items [j + gap] = swap;
		   		}
	    	}
	    }
	}
}

  void subclass() 
{
	int /*long*/ oldProc = windowProc ();
	int /*long*/ newProc = display.windowProc;
	if (oldProc == newProc) return;
	OS.SetWindowLongPtr (handle, OS.GWLP_WNDPROC, newProc);
}

 public Point toControl(Point point) 
{
	checkWidget ();
	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
	return toControl (point.x, point.y);
}

Returns a point which is the result of converting the argument, which is specified in display relative coordinates, to coordinates relative to the receiver.

 public Point toControl(int x,
    int y) 
{
	checkWidget ();
	POINT pt = new POINT ();
	pt.x = x;  pt.y = y; 
	OS.ScreenToClient (handle, pt);
	return new Point (pt.x, pt.y);
}

Returns a point which is the result of converting the argument, which is specified in display relative coordinates, to coordinates relative to the receiver.

 public Point toDisplay(Point point) 
{
	checkWidget ();
	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
	return toDisplay (point.x, point.y);
}

Returns a point which is the result of converting the argument, which is specified in coordinates relative to the receiver, to display relative coordinates.

 public Point toDisplay(int x,
    int y) 
{
	checkWidget ();
	POINT pt = new POINT ();
	pt.x = x;  pt.y = y; 
	OS.ClientToScreen (handle, pt);
	return new Point (pt.x, pt.y);
}

Returns a point which is the result of converting the argument, which is specified in coordinates relative to the receiver, to display relative coordinates.

 int topHandle() 
{
	return handle;
}

 boolean translateAccelerator(MSG msg) 
{
	return menuShell ().translateAccelerator (msg);
}

 boolean translateMnemonic(MSG msg) 
{
	if (msg.wParam <  0x20) return false;
	int /*long*/ hwnd = msg.hwnd;
	if (OS.GetKeyState (OS.VK_MENU)  >= 0) {
		int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
		if ((code & OS.DLGC_WANTALLKEYS) != 0) return false;
		if ((code & OS.DLGC_BUTTON) == 0) return false;
	}
	Decorations shell = menuShell ();
	if (shell.isVisible () && shell.isEnabled ()) {
		display.lastAscii = (int)/*64*/msg.wParam;
		display.lastNull = display.lastDead = false;
		Event event = new Event ();
		event.detail = SWT.TRAVERSE_MNEMONIC;
		if (setKeyState (event, SWT.Traverse, msg.wParam, msg.lParam)) {
			return translateMnemonic (event, null) || shell.translateMnemonic (event, this);
		}
	}
	return false;
}

 boolean translateMnemonic(Event event,
    Control control) 
{
	if (control == this) return false;
	if (!isVisible () || !isEnabled ()) return false;
	event.doit = mnemonicMatch (event.character);
	return traverse (event);
}

 boolean translateTraversal(MSG msg) 
{
	int /*long*/ hwnd = msg.hwnd;
	int key = (int)/*64*/msg.wParam;
	if (key == OS.VK_MENU) {
		OS.SendMessage (hwnd, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
		return false;
	}
	int detail = SWT.TRAVERSE_NONE;
	boolean doit = true, all = false;
	boolean lastVirtual = false;
	int lastKey = key, lastAscii = 0;
	switch (key) {
		case OS.VK_ESCAPE: {
			all = true;
			lastAscii = 27;
			int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
			if ((code & OS.DLGC_WANTALLKEYS) != 0) {
				/*
				* Use DLGC_HASSETSEL to determine that the control
				* is a text widget.  A text widget normally wants
				* all keys except VK_ESCAPE.  If this bit is not
				* set, then assume the control wants all keys,
				* including VK_ESCAPE.
				*/
				if ((code & OS.DLGC_HASSETSEL) == 0) doit = false;
			}
			detail = SWT.TRAVERSE_ESCAPE;
			break;
		}
		case OS.VK_RETURN: {
			all = true;
			lastAscii = '\r';
			int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
			if ((code & OS.DLGC_WANTALLKEYS) != 0) doit = false;
			detail = SWT.TRAVERSE_RETURN;
			break;
		}
		case OS.VK_TAB: {
			lastAscii = '\t';
			boolean next = OS.GetKeyState (OS.VK_SHIFT)  >= 0;
			int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
			if ((code & (OS.DLGC_WANTTAB | OS.DLGC_WANTALLKEYS)) != 0) {
				/*
				* Use DLGC_HASSETSEL to determine that the control is a
				* text widget.  If the control is a text widget, then
				* Ctrl+Tab and Shift+Tab should traverse out of the widget.
				* If the control is not a text widget, the correct behavior
				* is to give every character, including Tab, Ctrl+Tab and
				* Shift+Tab to the control.
				*/
				if ((code & OS.DLGC_HASSETSEL) != 0) {
					if (next && OS.GetKeyState (OS.VK_CONTROL)  >= 0) {
						doit = false;
					}
				} else {
					doit = false;
				}
			}
			detail = next ? SWT.TRAVERSE_TAB_NEXT : SWT.TRAVERSE_TAB_PREVIOUS;
			break;
		}
		case OS.VK_UP:
		case OS.VK_LEFT:
		case OS.VK_DOWN:
		case OS.VK_RIGHT: {
			/*
			* On WinCE SP there is no tab key.  Focus is assigned
			* using the VK_UP and VK_DOWN keys, not with VK_LEFT
			* or VK_RIGHT.
			*/
			if (OS.IsSP) {
				if (key == OS.VK_LEFT || key == OS.VK_RIGHT) return false;
			}
			lastVirtual = true;
			int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
			if ((code & (OS.DLGC_WANTARROWS /*| OS.DLGC_WANTALLKEYS*/)) != 0) doit = false;
			boolean next = key == OS.VK_DOWN || key == OS.VK_RIGHT;
			if (parent != null && (parent.style & SWT.MIRRORED) != 0) {
				if (key == OS.VK_LEFT || key == OS.VK_RIGHT) next = !next;
			}
			detail = next ? SWT.TRAVERSE_ARROW_NEXT : SWT.TRAVERSE_ARROW_PREVIOUS;
			break;
		}
		case OS.VK_PRIOR:
		case OS.VK_NEXT: {
			all = true;
			lastVirtual = true;
			if (OS.GetKeyState (OS.VK_CONTROL)  >= 0) return false;
			int /*long*/ code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
			if ((code & OS.DLGC_WANTALLKEYS) != 0) {
				/*
				* Use DLGC_HASSETSEL to determine that the control is a
				* text widget.  If the control is a text widget, then
				* Ctrl+PgUp and Ctrl+PgDn should traverse out of the widget.
				*/
				if ((code & OS.DLGC_HASSETSEL) == 0) doit = false;
			}
			detail = key == OS.VK_PRIOR ? SWT.TRAVERSE_PAGE_PREVIOUS : SWT.TRAVERSE_PAGE_NEXT;
			break;
		}
		default:
			return false;
	}
	Event event = new Event ();
	event.doit = doit;
	event.detail = detail;
	display.lastKey = lastKey;
	display.lastAscii = lastAscii;
	display.lastVirtual = lastVirtual;
	display.lastNull = display.lastDead = false;
	if (!setKeyState (event, SWT.Traverse, msg.wParam, msg.lParam)) return false;
	Shell shell = getShell ();
	Control control = this;
	do {
		if (control.traverse (event)) {
			OS.SendMessage (hwnd, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
			return true;
		}
		if (!event.doit && control.hooks (SWT.Traverse)) return false;
		if (control == shell) return false;
		control = control.parent;
	} while (all && control != null);
	return false;
}

 boolean traverse(Event event) 
{
	/*
	* It is possible (but unlikely), that application
	* code could have disposed the widget in the traverse
	* event.  If this happens, return true to stop further
	* event processing.
	*/	
	sendEvent (SWT.Traverse, event);
	if (isDisposed ()) return true;
	if (!event.doit) return false;
	switch (event.detail) {
		case SWT.TRAVERSE_NONE:			return true;
		case SWT.TRAVERSE_ESCAPE:			return traverseEscape ();
		case SWT.TRAVERSE_RETURN:			return traverseReturn ();
		case SWT.TRAVERSE_TAB_NEXT:		return traverseGroup (true);
		case SWT.TRAVERSE_TAB_PREVIOUS:	return traverseGroup (false);
		case SWT.TRAVERSE_ARROW_NEXT:		return traverseItem (true);
		case SWT.TRAVERSE_ARROW_PREVIOUS:	return traverseItem (false);
		case SWT.TRAVERSE_MNEMONIC:		return traverseMnemonic (event.character);	
		case SWT.TRAVERSE_PAGE_NEXT:		return traversePage (true);
		case SWT.TRAVERSE_PAGE_PREVIOUS:	return traversePage (false);
	}
	return false;
}

 public boolean traverse(int traversal) 
{
	checkWidget ();
	Event event = new Event ();
	event.doit = true;
	event.detail = traversal;
	return traverse (event);
}

Based on the argument, perform one of the expected platform traversal action. The argument should be one of the constants: SWT.TRAVERSE_ESCAPE, SWT.TRAVERSE_RETURN, SWT.TRAVERSE_TAB_NEXT, SWT.TRAVERSE_TAB_PREVIOUS, SWT.TRAVERSE_ARROW_NEXT and SWT.TRAVERSE_ARROW_PREVIOUS.

 boolean traverseEscape() 
{
	return false;
}

 boolean traverseGroup(boolean next) 
{
	Control root = computeTabRoot ();
	Widget group = computeTabGroup ();
	Widget [] list = root.computeTabList ();
	int length = list.length;
	int index = 0;
	while (index <  length) {
		if (list [index] == group) break;
		index++;
	}
	/*
	* It is possible (but unlikely), that application
	* code could have disposed the widget in focus in
	* or out events.  Ensure that a disposed widget is
	* not accessed.
	*/
	if (index == length) return false;
	int start = index, offset = (next) ? 1 : -1;
	while ((index = ((index + offset + length) % length)) != start) {
		Widget widget = list [index];
		if (!widget.isDisposed () && widget.setTabGroupFocus ()) {
			return true;
		}
	}
	if (group.isDisposed ()) return false;
	return group.setTabGroupFocus ();
}

 boolean traverseItem(boolean next) 
{
	Control [] children = parent._getChildren ();
	int length = children.length;
	int index = 0;
	while (index <  length) {
		if (children [index] == this) break;
		index++;
	}
	/*
	* It is possible (but unlikely), that application
	* code could have disposed the widget in focus in
	* or out events.  Ensure that a disposed widget is
	* not accessed.
	*/
	if (index == length) return false;
	int start = index, offset = (next) ? 1 : -1;
	while ((index = (index + offset + length) % length) != start) {
		Control child = children [index];
		if (!child.isDisposed () && child.isTabItem ()) {
			if (child.setTabItemFocus ()) return true;
		}
	}
	return false;
}

 boolean traverseMnemonic(char key) 
{
	if (mnemonicHit (key)) {
		OS.SendMessage (handle, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
		return true;
	}
	return false;
}

 boolean traversePage(boolean next) 
{
	return false;
}

 boolean traverseReturn() 
{
	return false;
}

  void unsubclass() 
{
	int /*long*/ newProc = windowProc ();
	int /*long*/ oldProc = display.windowProc;
	if (oldProc == newProc) return;
	OS.SetWindowLongPtr (handle, OS.GWLP_WNDPROC, newProc);
}

 public  void update() 
{
	checkWidget ();
	update (false);
}

Forces all outstanding paint requests for the widget to be processed before this method returns. If there are no outstanding paint request, this method does nothing.

Note: This method does not cause a redraw.

  void update(boolean all) 
{
//	checkWidget ();
	if (OS.IsWinCE) {
		OS.UpdateWindow (handle);
	} else {
		int flags = OS.RDW_UPDATENOW;
		if (all) flags |= OS.RDW_ALLCHILDREN;
		OS.RedrawWindow (handle, null, 0, flags);
	}
}

  void updateBackgroundColor() 
{
	Control control = findBackgroundControl ();
	if (control == null) control = this;
	setBackgroundPixel (control.background);
}

  void updateBackgroundImage() 
{
	Control control = findBackgroundControl ();
	Image image = control != null ? control.backgroundImage : backgroundImage;
	setBackgroundImage (image != null ? image.handle : 0);
}

  void updateBackgroundMode() 
{
	int oldState = state & PARENT_BACKGROUND;
	checkBackground ();
	if (oldState != (state & PARENT_BACKGROUND)) {
		setBackground ();
	}
}

  void updateFont(Font oldFont,
    Font newFont) 
{
	if (getFont ().equals (oldFont)) setFont (newFont);
}

  void updateImages() 
{
	/* Do nothing */
}

  void updateLayout(boolean resize,
    boolean all) 
{
	/* Do nothing */
}

 CREATESTRUCT widgetCreateStruct() 
{
	return null;
}

 int widgetExtStyle() 
{
	int bits = 0;
	if (!OS.IsPPC) {
		if ((style & SWT.BORDER) != 0) bits |= OS.WS_EX_CLIENTEDGE;
	}
//	if ((style & SWT.BORDER) != 0) {
//		if ((style & SWT.FLAT) == 0) bits |= OS.WS_EX_CLIENTEDGE;
//	}
	/*
	* Feature in Windows NT.  When CreateWindowEx() is called with
	* WS_EX_LAYOUTRTL or WS_EX_NOINHERITLAYOUT, CreateWindowEx()
	* fails to create the HWND. The fix is to not use these bits.
	*/
	if (OS.WIN32_VERSION <  OS.VERSION (4, 10)) {
		return bits;
	} 
	bits |= OS.WS_EX_NOINHERITLAYOUT;
	if ((style & SWT.RIGHT_TO_LEFT) != 0) bits |= OS.WS_EX_LAYOUTRTL;
	return bits;
}

 int widgetParent() 
{
	return parent.handle;
}

 int widgetStyle() 
{
	/* Force clipping of siblings by setting WS_CLIPSIBLINGS */
	int bits = OS.WS_CHILD | OS.WS_VISIBLE | OS.WS_CLIPSIBLINGS;
//	if ((style & SWT.BORDER) != 0) {
//		if ((style & SWT.FLAT) != 0) bits |= OS.WS_BORDER;
//	}
	if (OS.IsPPC) {
		if ((style & SWT.BORDER) != 0) bits |= OS.WS_BORDER;
	}
	return bits;
	/*
	* This code is intentionally commented.  When clipping
	* of both siblings and children is not enforced, it is
	* possible for application code to draw outside of the
	* control.
	*/
//	int bits = OS.WS_CHILD | OS.WS_VISIBLE;
//	if ((style & SWT.CLIP_SIBLINGS) != 0) bits |= OS.WS_CLIPSIBLINGS;
//	if ((style & SWT.CLIP_CHILDREN) != 0) bits |= OS.WS_CLIPCHILDREN;
//	return bits;
}

 abstract TCHAR windowClass()

 abstract int windowProc()

 int windowProc(int hwnd,
    int msg,
    int wParam,
    int lParam) 
{
	LRESULT result = null;
	switch (msg) {
		case OS.WM_ACTIVATE:			result = WM_ACTIVATE (wParam, lParam); break;
		case OS.WM_CAPTURECHANGED:		result = WM_CAPTURECHANGED (wParam, lParam); break;
		case OS.WM_CHANGEUISTATE:		result = WM_CHANGEUISTATE (wParam, lParam); break;
		case OS.WM_CHAR:				result = WM_CHAR (wParam, lParam); break;
		case OS.WM_CLEAR:				result = WM_CLEAR (wParam, lParam); break;
		case OS.WM_CLOSE:				result = WM_CLOSE (wParam, lParam); break;
		case OS.WM_COMMAND:				result = WM_COMMAND (wParam, lParam); break;
		case OS.WM_CONTEXTMENU:			result = WM_CONTEXTMENU (wParam, lParam); break;
		case OS.WM_CTLCOLORBTN:
		case OS.WM_CTLCOLORDLG:
		case OS.WM_CTLCOLOREDIT:
		case OS.WM_CTLCOLORLISTBOX:
		case OS.WM_CTLCOLORMSGBOX:
		case OS.WM_CTLCOLORSCROLLBAR:
		case OS.WM_CTLCOLORSTATIC:		result = WM_CTLCOLOR (wParam, lParam); break;
		case OS.WM_CUT:					result = WM_CUT (wParam, lParam); break;
		case OS.WM_DESTROY:				result = WM_DESTROY (wParam, lParam); break;
		case OS.WM_DRAWITEM:			result = WM_DRAWITEM (wParam, lParam); break;
		case OS.WM_ENDSESSION:			result = WM_ENDSESSION (wParam, lParam); break;
		case OS.WM_ENTERIDLE:			result = WM_ENTERIDLE (wParam, lParam); break;
		case OS.WM_ERASEBKGND:			result = WM_ERASEBKGND (wParam, lParam); break;
		case OS.WM_GETDLGCODE:			result = WM_GETDLGCODE (wParam, lParam); break;
		case OS.WM_GETFONT:				result = WM_GETFONT (wParam, lParam); break;
		case OS.WM_GETOBJECT:			result = WM_GETOBJECT (wParam, lParam); break;
		case OS.WM_GETMINMAXINFO:		result = WM_GETMINMAXINFO (wParam, lParam); break;
		case OS.WM_HELP:				result = WM_HELP (wParam, lParam); break;
		case OS.WM_HSCROLL:				result = WM_HSCROLL (wParam, lParam); break;
		case OS.WM_IME_CHAR:			result = WM_IME_CHAR (wParam, lParam); break;
		case OS.WM_IME_COMPOSITION:		result = WM_IME_COMPOSITION (wParam, lParam); break;
		case OS.WM_IME_COMPOSITION_START:	result = WM_IME_COMPOSITION_START (wParam, lParam); break;
		case OS.WM_IME_ENDCOMPOSITION:	result = WM_IME_ENDCOMPOSITION (wParam, lParam); break;
		case OS.WM_INITMENUPOPUP:		result = WM_INITMENUPOPUP (wParam, lParam); break;
		case OS.WM_INPUTLANGCHANGE:		result = WM_INPUTLANGCHANGE (wParam, lParam); break;
		case OS.WM_HOTKEY:				result = WM_HOTKEY (wParam, lParam); break;		
		case OS.WM_KEYDOWN:				result = WM_KEYDOWN (wParam, lParam); break;
		case OS.WM_KEYUP:				result = WM_KEYUP (wParam, lParam); break;
		case OS.WM_KILLFOCUS:			result = WM_KILLFOCUS (wParam, lParam); break;
		case OS.WM_LBUTTONDBLCLK:		result = WM_LBUTTONDBLCLK (wParam, lParam); break;
		case OS.WM_LBUTTONDOWN:			result = WM_LBUTTONDOWN (wParam, lParam); break;
		case OS.WM_LBUTTONUP:			result = WM_LBUTTONUP (wParam, lParam); break;
		case OS.WM_MBUTTONDBLCLK:		result = WM_MBUTTONDBLCLK (wParam, lParam); break;
		case OS.WM_MBUTTONDOWN:			result = WM_MBUTTONDOWN (wParam, lParam); break;
		case OS.WM_MBUTTONUP:			result = WM_MBUTTONUP (wParam, lParam); break;
		case OS.WM_MEASUREITEM:			result = WM_MEASUREITEM (wParam, lParam); break;
		case OS.WM_MENUCHAR:			result = WM_MENUCHAR (wParam, lParam); break;
		case OS.WM_MENUSELECT:			result = WM_MENUSELECT (wParam, lParam); break;
		case OS.WM_MOUSEACTIVATE:		result = WM_MOUSEACTIVATE (wParam, lParam); break;
		case OS.WM_MOUSEHOVER:			result = WM_MOUSEHOVER (wParam, lParam); break;
		case OS.WM_MOUSELEAVE:			result = WM_MOUSELEAVE (wParam, lParam); break;
		case OS.WM_MOUSEMOVE:			result = WM_MOUSEMOVE (wParam, lParam); break;
		case OS.WM_MOUSEWHEEL:			result = WM_MOUSEWHEEL (wParam, lParam); break;
		case OS.WM_MOVE:				result = WM_MOVE (wParam, lParam); break;
		case OS.WM_NCACTIVATE:			result = WM_NCACTIVATE (wParam, lParam); break;
		case OS.WM_NCCALCSIZE:			result = WM_NCCALCSIZE (wParam, lParam); break;
		case OS.WM_NCHITTEST:			result = WM_NCHITTEST (wParam, lParam); break;
		case OS.WM_NCLBUTTONDOWN:		result = WM_NCLBUTTONDOWN (wParam, lParam); break;
		case OS.WM_NCPAINT:				result = WM_NCPAINT (wParam, lParam); break;
		case OS.WM_NOTIFY:				result = WM_NOTIFY (wParam, lParam); break;
		case OS.WM_PAINT:				result = WM_PAINT (wParam, lParam); break;
		case OS.WM_PALETTECHANGED:		result = WM_PALETTECHANGED (wParam, lParam); break;
		case OS.WM_PARENTNOTIFY:		result = WM_PARENTNOTIFY (wParam, lParam); break;
		case OS.WM_PASTE:				result = WM_PASTE (wParam, lParam); break;
		case OS.WM_PRINT:				result = WM_PRINT (wParam, lParam); break;
		case OS.WM_PRINTCLIENT:			result = WM_PRINTCLIENT (wParam, lParam); break;
		case OS.WM_QUERYENDSESSION:		result = WM_QUERYENDSESSION (wParam, lParam); break;
		case OS.WM_QUERYNEWPALETTE:		result = WM_QUERYNEWPALETTE (wParam, lParam); break;
		case OS.WM_QUERYOPEN:			result = WM_QUERYOPEN (wParam, lParam); break;
		case OS.WM_RBUTTONDBLCLK:		result = WM_RBUTTONDBLCLK (wParam, lParam); break;
		case OS.WM_RBUTTONDOWN:			result = WM_RBUTTONDOWN (wParam, lParam); break;
		case OS.WM_RBUTTONUP:			result = WM_RBUTTONUP (wParam, lParam); break;
		case OS.WM_SETCURSOR:			result = WM_SETCURSOR (wParam, lParam); break;
		case OS.WM_SETFOCUS:			result = WM_SETFOCUS (wParam, lParam); break;
		case OS.WM_SETFONT:				result = WM_SETFONT (wParam, lParam); break;
		case OS.WM_SETTINGCHANGE:		result = WM_SETTINGCHANGE (wParam, lParam); break;
		case OS.WM_SETREDRAW:			result = WM_SETREDRAW (wParam, lParam); break;
		case OS.WM_SHOWWINDOW:			result = WM_SHOWWINDOW (wParam, lParam); break;
		case OS.WM_SIZE:				result = WM_SIZE (wParam, lParam); break;
		case OS.WM_SYSCHAR:				result = WM_SYSCHAR (wParam, lParam); break;
		case OS.WM_SYSCOLORCHANGE:		result = WM_SYSCOLORCHANGE (wParam, lParam); break;
		case OS.WM_SYSCOMMAND:			result = WM_SYSCOMMAND (wParam, lParam); break;
		case OS.WM_SYSKEYDOWN:			result = WM_SYSKEYDOWN (wParam, lParam); break;
		case OS.WM_SYSKEYUP:			result = WM_SYSKEYUP (wParam, lParam); break;
		case OS.WM_TIMER:				result = WM_TIMER (wParam, lParam); break;
		case OS.WM_UNDO:				result = WM_UNDO (wParam, lParam); break;
		case OS.WM_UPDATEUISTATE:		result = WM_UPDATEUISTATE (wParam, lParam); break;
		case OS.WM_VSCROLL:				result = WM_VSCROLL (wParam, lParam); break;
		case OS.WM_WINDOWPOSCHANGED:	result = WM_WINDOWPOSCHANGED (wParam, lParam); break;
		case OS.WM_WINDOWPOSCHANGING:	result = WM_WINDOWPOSCHANGING (wParam, lParam); break;
		case OS.WM_XBUTTONDBLCLK:		result = WM_XBUTTONDBLCLK (wParam, lParam); break;
		case OS.WM_XBUTTONDOWN:			result = WM_XBUTTONDOWN (wParam, lParam); break;
		case OS.WM_XBUTTONUP:			result = WM_XBUTTONUP (wParam, lParam); break;
	}
	if (result != null) return result.value;
	return callWindowProc (hwnd, msg, wParam, lParam);
}

 LRESULT wmColorChild(int wParam,
    int lParam) 
{
	Control control = findBackgroundControl ();
	if (control == null) {
		if ((state & THEME_BACKGROUND) != 0) {
			if (OS.COMCTL32_MAJOR  >= 6 && OS.IsAppThemed ()) {
				control = findThemeControl ();
				if (control != null) {
					RECT rect = new RECT ();
					OS.GetClientRect (handle, rect);
					OS.SetTextColor (wParam, getForegroundPixel ());
					OS.SetBkColor (wParam, getBackgroundPixel ());
					fillThemeBackground (wParam, control, rect);
					OS.SetBkMode (wParam, OS.TRANSPARENT);
					return new LRESULT (OS.GetStockObject (OS.NULL_BRUSH));
				}
			}
		}
		if (foreground == -1) return null;
	}
	if (control == null) control = this;
	int forePixel = getForegroundPixel ();
	int backPixel = control.getBackgroundPixel ();
	OS.SetTextColor (wParam, forePixel);
	OS.SetBkColor (wParam, backPixel);
	if (control.backgroundImage != null) {
		RECT rect = new RECT ();
		OS.GetClientRect (handle, rect);
		int /*long*/ hwnd = control.handle;
		int /*long*/ hBitmap = control.backgroundImage.handle;
		OS.MapWindowPoints (handle, hwnd, rect, 2);
		POINT lpPoint = new POINT ();
		OS.GetWindowOrgEx (wParam, lpPoint);
		OS.SetBrushOrgEx (wParam, -rect.left - lpPoint.x, -rect.top - lpPoint.y, lpPoint);
		int /*long*/ hBrush = findBrush (hBitmap, OS.BS_PATTERN);
		if ((state & DRAW_BACKGROUND) != 0) {
			int /*long*/ hOldBrush = OS.SelectObject (wParam, hBrush);
			OS.MapWindowPoints (hwnd, handle, rect, 2);
			OS.PatBlt (wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
			OS.SelectObject (wParam, hOldBrush);
		}
		OS.SetBkMode (wParam, OS.TRANSPARENT);
		return new LRESULT (hBrush);
	}
	int /*long*/ hBrush = findBrush (backPixel, OS.BS_SOLID);
	if ((state & DRAW_BACKGROUND) != 0) {
		RECT rect = new RECT ();
		OS.GetClientRect (handle, rect);
		int /*long*/ hOldBrush = OS.SelectObject (wParam, hBrush);
		OS.PatBlt (wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
		OS.SelectObject (wParam, hOldBrush);
	}
	return new LRESULT (hBrush);
}

 LRESULT wmCommandChild(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT wmDrawChild(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT wmMeasureChild(int wParam,
    int lParam) 
{
	return null;
}

 LRESULT wmNotify(NMHDR hdr,
    int wParam,
    int lParam) 
{
	Control control = display.getControl (hdr.hwndFrom);
	if (control == null) return null;
	return control.wmNotifyChild (hdr, wParam, lParam);
}

 LRESULT wmNotifyChild(NMHDR hdr,
    int wParam,
    int lParam) 
{
	return null;
}

 LRESULT wmScrollChild(int wParam,
    int lParam) 
{
	return null;
}