/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.internal.win32.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* Instances of this class represent the "windows"
* which the desktop or "window manager" is managing.
* Instances that do not have a parent (that is, they
* are built using the constructor, which takes a
* Display
as the argument) are described
* as top level shells. Instances that do have
* a parent are described as secondary or
* dialog shells.
*
* Instances are always displayed in one of the maximized, * minimized or normal states: *
RESIZE
) until it is
* no longer maximized.
*
* The modality of an instance may be specified using
* style bits. The modality style bits are used to determine
* whether input is blocked for other shells on the display.
* The PRIMARY_MODAL
style allows an instance to block
* input to its parent. The APPLICATION_MODAL
style
* allows an instance to block input to every other shell in the
* display. The SYSTEM_MODAL
style allows an instance
* to block input to all shells, including shells belonging to
* different applications.
*
* Note: The styles supported by this class are treated
* as HINTs, since the window manager for the
* desktop on which the instance is visible has ultimate
* control over the appearance and behavior of decorations
* and modality. For example, some window managers only
* support resizable windows and will always assume the
* RESIZE style, even if it is not set. In addition, if a
* modality style is not supported, it is "upgraded" to a
* more restrictive modality style that is supported. For
* example, if PRIMARY_MODAL
is not supported,
* it would be upgraded to APPLICATION_MODAL
.
* A modality style may also be "downgraded" to a less
* restrictive style. For example, most operating systems
* no longer support SYSTEM_MODAL
because
* it can freeze up the desktop, so this is typically
* downgraded to APPLICATION_MODAL
.
*
SWT
provides two "convenience constants"
* for the most commonly required style combinations:
* SHELL_TRIM
CLOSE | TITLE | MIN | MAX | RESIZE
)
* DIALOG_TRIM
TITLE | CLOSE | BORDER
)
* * Note: Only one of the styles APPLICATION_MODAL, MODELESS, * PRIMARY_MODAL and SYSTEM_MODAL may be specified. *
* IMPORTANT: This class is not intended to be subclassed. *
* * @see Decorations * @see SWT * @see Shell snippets * @see SWT Example: ControlExample * @see Sample code and further information * @noextend This class is not intended to be subclassed by clients. */ public class Shell extends Decorations { Menu activeMenu; ToolTip [] toolTips; long /*int*/ hIMC, hwndMDIClient, lpstrTip, toolTipHandle, balloonTipHandle; int minWidth = SWT.DEFAULT, minHeight = SWT.DEFAULT; long /*int*/ [] brushes; boolean showWithParent, fullScreen, wasMaximized, modified, center; String toolTitle, balloonTitle; long /*int*/ toolIcon, balloonIcon; long /*int*/ windowProc; Control lastActive; SHACTIVATEINFO psai; static /*final*/ long /*int*/ ToolTipProc; static final long /*int*/ DialogProc; static final TCHAR DialogClass = new TCHAR (0, OS.IsWinCE ? "Dialog" : "#32770", true); final static int [] SYSTEM_COLORS = { OS.COLOR_BTNFACE, OS.COLOR_WINDOW, OS.COLOR_BTNTEXT, OS.COLOR_WINDOWTEXT, OS.COLOR_HIGHLIGHT, OS.COLOR_SCROLLBAR, }; final static int BRUSHES_SIZE = 32; static { WNDCLASS lpWndClass = new WNDCLASS (); OS.GetClassInfo (0, DialogClass, lpWndClass); DialogProc = lpWndClass.lpfnWndProc; } /** * Constructs a new instance of this class. This is equivalent * to callingShell((Display) null)
.
*
* @exception SWTException Shell((Display) null, style)
.
*
* 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.
*
SWT.SHELL_TRIM
.
* * Note: Currently, null can be passed in for the display argument. * This has the effect of creating the shell on the currently active * display if there is one. If there is no current display, the * shell is created on a "default" display. Passing in null as * the display argument is not considered to be good coding style, * and may not be supported in a future release of SWT. *
* * @param display the display to create the shell on * * @exception SWTException
* 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.
*
* Note: Currently, null can be passed in for the display argument. * This has the effect of creating the shell on the currently active * display if there is one. If there is no current display, the * shell is created on a "default" display. Passing in null as * the display argument is not considered to be good coding style, * and may not be supported in a future release of SWT. *
* * @param display the display to create the shell on * @param style the style of control to construct * * @exception SWTExceptionSWT.DIALOG_TRIM
.
* * Note: Currently, null can be passed in for the parent. * This has the effect of creating the shell on the currently active * display if there is one. If there is no current display, the * shell is created on a "default" display. Passing in null as * the parent is not considered to be good coding style, * and may not be supported in a future release of SWT. *
* * @param parent a shell which will be the parent of the new instance * * @exception IllegalArgumentException
* 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.
*
* Note: Currently, null can be passed in for the parent. * This has the effect of creating the shell on the currently active * display if there is one. If there is no current display, the * shell is created on a "default" display. Passing in null as * the parent is not considered to be good coding style, * and may not be supported in a future release of SWT. *
* * @param parent a shell which will be the parent of the new instance * @param style the style of control to construct * * @exception IllegalArgumentException
* IMPORTANT: This method is not part of the public
* API for Shell
. 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.
*
* IMPORTANT: This method is not part of the public
* API for Shell
. 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.
*
ShellListener
interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException true
if the receiver is currently
* in fullscreen state, and false otherwise.
* * * @return the fullscreen state * * @exception SWTException
SWT
:
* NONE
, ROMAN
, DBCS
,
* PHONETIC
, NATIVE
, ALPHA
.
*
* @return the IME mode
*
* @exception SWTException true
if the receiver is marked as modified, or false
otherwise
*
* @exception SWTException null
if the shell has the default shape.
*
* @return the region that defines the shape of the shell, or null
*
* @exception SWTException * @return the dialog shells * * @exception SWTException
*
* @return a ToolBar object representing the Shell's tool bar, or
* This operation requires the operating system's advanced
* widgets subsystem which may not be available on some
* platforms.
*
* Note: The result of intermixing calls to
*
*
* @since 3.7
*/
public ToolBar getToolBar() {
checkWidget ();
return null;
}
Composite findDeferredControl () {
return layoutCount > 0 ? this : null;
}
public boolean isEnabled () {
checkWidget ();
return getEnabled ();
}
public boolean isVisible () {
checkWidget ();
return getVisible ();
}
long /*int*/ hwndMDIClient () {
if (hwndMDIClient == 0) {
int widgetStyle = OS.MDIS_ALLCHILDSTYLES | OS.WS_CHILD | OS.WS_CLIPCHILDREN | OS.WS_CLIPSIBLINGS;
hwndMDIClient = OS.CreateWindowEx (
0,
new TCHAR (0, "MDICLIENT", true),
null,
widgetStyle,
0, 0, 0, 0,
handle,
0,
OS.GetModuleHandle (null),
new CREATESTRUCT ());
// OS.ShowWindow (hwndMDIClient, OS.SW_SHOW);
}
return hwndMDIClient;
}
/**
* Moves the receiver to the top of the drawing order for
* the display on which it was created (so that all other
* shells on that display, which are not the receiver's
* children will be drawn behind it), marks it visible,
* sets the focus and asks the window manager to make the
* shell active.
*
* @exception SWTException
*
*
* @see Control#moveAbove
* @see Control#setFocus
* @see Control#setVisible
* @see Display#getActiveShell
* @see Decorations#setDefaultButton(Button)
* @see Shell#setActive
* @see Shell#forceActive
*/
public void open () {
checkWidget ();
STARTUPINFO lpStartUpInfo = Display.lpStartupInfo;
if (lpStartUpInfo == null || (lpStartUpInfo.dwFlags & OS.STARTF_USESHOWWINDOW) == 0) {
bringToTop ();
if (isDisposed ()) return;
}
/*
* Feature on WinCE PPC. A new application becomes
* the foreground application only if it has at least
* one visible window before the event loop is started.
* The workaround is to explicitly force the shell to
* be the foreground window.
*/
if (OS.IsWinCE) OS.SetForegroundWindow (handle);
OS.SendMessage (handle, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
setVisible (true);
if (isDisposed ()) return;
/*
* Bug in Windows XP. Despite the fact that an icon has been
* set for a window, the task bar displays the wrong icon the
* first time the window is made visible with ShowWindow() after
* a call to BringToTop(), when a long time elapses between the
* ShowWindow() and the time the event queue is read. The icon
* in the window trimming is correct but the one in the task
* bar does not get updated. The fix is to call PeekMessage()
* with the flag PM_NOREMOVE and PM_QS_SENDMESSAGE to respond
* to a cross thread WM_GETICON.
*
* NOTE: This allows other cross thread messages to be delivered,
* most notably WM_ACTIVATE.
*/
MSG msg = new MSG ();
int flags = OS.PM_NOREMOVE | OS.PM_NOYIELD | OS.PM_QS_SENDMESSAGE;
OS.PeekMessage (msg, 0, 0, 0, flags);
if (!restoreFocus () && !traverseGroup (true)) setFocus ();
}
public boolean print (GC gc) {
checkWidget ();
if (gc == null) error (SWT.ERROR_NULL_ARGUMENT);
if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
return false;
}
void register () {
super.register ();
if (toolTipHandle != 0) display.addControl (toolTipHandle, this);
if (balloonTipHandle != 0) display.addControl (balloonTipHandle, this);
}
void releaseBrushes () {
if (brushes != null) {
for (int i=0; i
*
*
* @see ShellListener
* @see #addShellListener
*/
public void removeShellListener (ShellListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Close, listener);
eventTable.unhook (SWT.Iconify,listener);
eventTable.unhook (SWT.Deiconify,listener);
eventTable.unhook (SWT.Activate, listener);
eventTable.unhook (SWT.Deactivate, listener);
}
void reskinChildren (int flags) {
Shell [] shells = getShells ();
for (int i=0; i
*
*
* @since 2.0
* @see Control#moveAbove
* @see Control#setFocus
* @see Control#setVisible
* @see Display#getActiveShell
* @see Decorations#setDefaultButton(Button)
* @see Shell#open
* @see Shell#setActive
*/
public void setActive () {
checkWidget ();
if (!isVisible ()) return;
bringToTop ();
// widget could be disposed at this point
}
void setActiveControl (Control control) {
setActiveControl (control, SWT.None);
}
void setActiveControl (Control control, int type) {
if (control != null && control.isDisposed ()) control = null;
if (lastActive != null && lastActive.isDisposed ()) lastActive = null;
if (lastActive == control) return;
/*
* Compute the list of controls to be activated and
* deactivated by finding the first common parent
* control.
*/
Control [] activate = (control == null) ? new Control [0] : control.getPath ();
Control [] deactivate = (lastActive == null) ? new Control [0] : lastActive.getPath ();
lastActive = control;
int index = 0, length = Math.min (activate.length, deactivate.length);
while (index < length) {
if (activate [index] != deactivate [index]) break;
index++;
}
/*
* It is possible (but unlikely), that application
* code could have destroyed some of the widgets. If
* this happens, keep processing those widgets that
* are not disposed.
*/
for (int i=deactivate.length-1; i>=index; --i) {
if (!deactivate [i].isDisposed ()) {
deactivate [i].sendEvent (SWT.Deactivate);
}
}
for (int i=activate.length-1; i>=index; --i) {
if (!activate [i].isDisposed ()) {
Event event = new Event ();
event.detail = type;
activate [i].sendEvent (SWT.Activate, event);
}
}
}
/**
* Sets the receiver's alpha value which must be
* between 0 (transparent) and 255 (opaque).
*
*
*
* @since 3.4
*/
public void setAlpha (int alpha) {
checkWidget ();
if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (5, 1)) {
alpha &= 0xFF;
int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
if (alpha == 0xFF) {
OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits & ~OS.WS_EX_LAYERED);
int flags = OS.RDW_ERASE | OS.RDW_INVALIDATE | OS.RDW_FRAME | OS.RDW_ALLCHILDREN;
OS.RedrawWindow (handle, null, 0, flags);
} else {
OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits | OS.WS_EX_LAYERED);
OS.SetLayeredWindowAttributes (handle, 0, (byte)alpha, OS.LWA_ALPHA);
}
}
}
void setBounds (int x, int y, int width, int height, int flags, boolean defer) {
if (fullScreen) setFullScreen (false);
/*
* Bug in Windows. When a window has alpha and
* SetWindowPos() is called with SWP_DRAWFRAME,
* the contents of the window are copied rather
* than allowing the windows underneath to draw.
* This causes pixel corruption. The fix is to
* clear the SWP_DRAWFRAME bits.
*/
int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
if ((bits & OS.WS_EX_LAYERED) != 0) {
flags &= ~OS.SWP_DRAWFRAME;
}
super.setBounds (x, y, width, height, flags, false);
}
public void setEnabled (boolean enabled) {
checkWidget ();
if (((state & DISABLED) == 0) == enabled) return;
super.setEnabled (enabled);
if (enabled && handle == OS.GetActiveWindow ()) {
if (!restoreFocus ()) traverseGroup (true);
}
}
/**
* Sets the full screen state of the receiver.
* If the argument is true
causes the receiver
* to switch to the full screen state, and if the argument is
* false
and the receiver was previously switched
* into full screen state, causes the receiver to switch back
* to either the maximized or normal states.
* setFullScreen(true)
,
* setMaximized(true)
and setMinimized(true)
will
* vary by platform. Typically, the behavior will match the platform user's
* expectations, but not always. This should be avoided if possible.
*
*
*
* @since 3.4
*/
public void setFullScreen (boolean fullScreen) {
checkWidget();
if (this.fullScreen == fullScreen) return;
int stateFlags = fullScreen ? OS.SW_SHOWMAXIMIZED : OS.SW_RESTORE;
int styleFlags = OS.GetWindowLong (handle, OS.GWL_STYLE);
int mask = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX;
if ((style & mask) != 0) {
if (fullScreen) {
styleFlags &= ~(OS.WS_CAPTION | OS.WS_MAXIMIZEBOX | OS.WS_MINIMIZEBOX);
} else {
styleFlags |= OS.WS_CAPTION;
if ((style & SWT.MAX) != 0) styleFlags |= OS.WS_MAXIMIZEBOX;
if ((style & SWT.MIN) != 0) styleFlags |= OS.WS_MINIMIZEBOX;
}
}
if (fullScreen) wasMaximized = getMaximized ();
boolean visible = isVisible ();
OS.SetWindowLong (handle, OS.GWL_STYLE, styleFlags);
if (wasMaximized) {
OS.ShowWindow (handle, OS.SW_HIDE);
stateFlags = OS.SW_SHOWMAXIMIZED;
}
if (visible) OS.ShowWindow (handle, stateFlags);
OS.UpdateWindow (handle);
this.fullScreen = fullScreen;
}
/**
* Sets the input method editor mode to the argument which
* should be the result of bitwise OR'ing together one or more
* of the following constants defined in class SWT
:
* NONE
, ROMAN
, DBCS
,
* PHONETIC
, NATIVE
, ALPHA
.
*
* @param mode the new IME mode
*
* @exception SWTException
*
*
* @see SWT
*/
public void setImeInputMode (int mode) {
checkWidget ();
if (!OS.IsDBLocale) return;
boolean imeOn = mode != SWT.NONE;
long /*int*/ hIMC = OS.ImmGetContext (handle);
OS.ImmSetOpenStatus (hIMC, imeOn);
if (imeOn) {
int [] lpfdwConversion = new int [1], lpfdwSentence = new int [1];
if (OS.ImmGetConversionStatus (hIMC, lpfdwConversion, lpfdwSentence)) {
int newBits = 0;
int oldBits = OS.IME_CMODE_NATIVE | OS.IME_CMODE_KATAKANA;
if ((mode & SWT.PHONETIC) != 0) {
newBits = OS.IME_CMODE_KATAKANA | OS.IME_CMODE_NATIVE;
oldBits = 0;
} else {
if ((mode & SWT.NATIVE) != 0) {
newBits = OS.IME_CMODE_NATIVE;
oldBits = OS.IME_CMODE_KATAKANA;
}
}
boolean fullShape = (mode & SWT.DBCS) != 0;
if ((mode & SWT.NATIVE) != 0) {
long /*int*/ hkl = OS.GetKeyboardLayout (0);
int langid = OS.PRIMARYLANGID (OS.LOWORD (hkl));
if (langid == OS.LANG_JAPANESE) {
fullShape = true;
}
}
if (fullShape) {
newBits |= OS.IME_CMODE_FULLSHAPE;
} else {
oldBits |= OS.IME_CMODE_FULLSHAPE;
}
if ((mode & SWT.ROMAN) != 0) {
newBits |= OS.IME_CMODE_ROMAN;
} else {
oldBits |= OS.IME_CMODE_ROMAN;
}
lpfdwConversion [0] |= newBits;
lpfdwConversion [0] &= ~oldBits;
OS.ImmSetConversionStatus (hIMC, lpfdwConversion [0], lpfdwSentence [0]);
}
}
OS.ImmReleaseContext (handle, hIMC);
}
/**
* Sets the receiver's minimum size to the size specified by the arguments.
* If the new minimum size is larger than the current size of the receiver,
* the receiver is resized to the new minimum size.
*
* @param width the new minimum width for the receiver
* @param height the new minimum height for the receiver
*
* @exception SWTException
*
*
* @since 3.1
*/
public void setMinimumSize (int width, int height) {
checkWidget ();
int widthLimit = 0, heightLimit = 0;
int trim = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX;
if ((style & SWT.NO_TRIM) == 0 && (style & trim) != 0) {
widthLimit = OS.GetSystemMetrics (OS.SM_CXMINTRACK);
if ((style & SWT.RESIZE) != 0) {
heightLimit = OS.GetSystemMetrics (OS.SM_CYMINTRACK);
} else {
RECT rect = new RECT ();
int bits1 = OS.GetWindowLong (handle, OS.GWL_STYLE);
int bits2 = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
OS.AdjustWindowRectEx (rect, bits1, false, bits2);
heightLimit = rect.bottom - rect.top;
}
}
minWidth = Math.max (widthLimit, width);
minHeight = Math.max (heightLimit, height);
Point size = getSize ();
int newWidth = Math.max (size.x, minWidth);
int newHeight = Math.max (size.y, minHeight);
if (minWidth <= widthLimit) minWidth = SWT.DEFAULT;
if (minHeight <= heightLimit) minHeight = SWT.DEFAULT;
if (newWidth != size.x || newHeight != size.y) setSize (newWidth, newHeight);
}
/**
* Sets the receiver's minimum size to the size specified by the argument.
* If the new minimum size is larger than the current size of the receiver,
* the receiver is resized to the new minimum size.
*
* @param size the new minimum size for the receiver
*
* @exception IllegalArgumentException
*
* @exception SWTException
*
*
* @since 3.1
*/
public void setMinimumSize (Point size) {
checkWidget ();
if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
setMinimumSize (size.x, size.y);
}
/**
* Sets the receiver's modified state as specified by the argument.
*
* @param modified the new modified state for the receiver
*
*
* @exception SWTException
*
*
* @since 3.5
*/
public void setModified (boolean modified) {
checkWidget ();
this.modified = modified;
}
void setItemEnabled (int cmd, boolean enabled) {
long /*int*/ hMenu = OS.GetSystemMenu (handle, false);
if (hMenu == 0) return;
int flags = OS.MF_ENABLED;
if (!enabled) flags = OS.MF_DISABLED | OS.MF_GRAYED;
OS.EnableMenuItem (hMenu, cmd, OS.MF_BYCOMMAND | flags);
}
void setParent () {
/* Do nothing. Not necessary for Shells */
}
/**
* Sets the shape of the shell to the region specified
* by the argument. When the argument is null, the
* default shape of the shell is restored. The shell
* must be created with the style SWT.NO_TRIM in order
* to specify a region.
*
* @param region the region that defines the shape of the shell (or null)
*
* @exception IllegalArgumentException
*
* @exception SWTException
*
*
* @since 3.0
*
*/
public void setRegion (Region region) {
checkWidget ();
if ((style & SWT.NO_TRIM) == 0) return;
super.setRegion (region);
}
void setToolTipText (long /*int*/ hwnd, String text) {
if (OS.IsWinCE) return;
TOOLINFO lpti = new TOOLINFO ();
lpti.cbSize = TOOLINFO.sizeof;
lpti.hwnd = handle;
lpti.uId = hwnd;
long /*int*/ hwndToolTip = toolTipHandle ();
if (text == null) {
OS.SendMessage (hwndToolTip, OS.TTM_DELTOOL, 0, lpti);
} else {
if (OS.SendMessage (hwndToolTip, OS.TTM_GETTOOLINFO, 0, lpti) != 0) {
OS.SendMessage (hwndToolTip, OS.TTM_UPDATE, 0, 0);
} else {
lpti.uFlags = OS.TTF_IDISHWND | OS.TTF_SUBCLASS;
lpti.lpszText = OS.LPSTR_TEXTCALLBACK;
OS.SendMessage (hwndToolTip, OS.TTM_ADDTOOL, 0, lpti);
}
}
}
void setToolTipText (NMTTDISPINFO lpnmtdi, byte [] buffer) {
/*
* Ensure that the current position of the mouse
* is inside the client area of the shell. This
* prevents tool tips from popping up over the
* shell trimmings.
*/
if (!hasCursor ()) return;
long /*int*/ hHeap = OS.GetProcessHeap ();
if (lpstrTip != 0) OS.HeapFree (hHeap, 0, lpstrTip);
int byteCount = buffer.length;
lpstrTip = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory (lpstrTip, buffer, byteCount);
lpnmtdi.lpszText = lpstrTip;
}
void setToolTipText (NMTTDISPINFO lpnmtdi, char [] buffer) {
/*
* Ensure that the current position of the mouse
* is inside the client area of the shell. This
* prevents tool tips from popping up over the
* shell trimmings.
*/
if (!hasCursor ()) return;
long /*int*/ hHeap = OS.GetProcessHeap ();
if (lpstrTip != 0) OS.HeapFree (hHeap, 0, lpstrTip);
int byteCount = buffer.length * 2;
lpstrTip = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory (lpstrTip, buffer, byteCount);
lpnmtdi.lpszText = lpstrTip;
}
void setToolTipTitle (long /*int*/ hwndToolTip, String text, int icon) {
/*
* Bug in Windows. For some reason, when TTM_SETTITLE
* is used to set the title of a tool tip, Windows leaks
* GDI objects. This happens even when TTM_SETTITLE is
* called with TTI_NONE and NULL. The documentation
* states that Windows copies the icon and that the
* programmer must free the copy but does not provide
* API to get the icon. For example, when TTM_SETTITLE
* is called with ICON_ERROR, when TTM_GETTITLE is used
* to query the title and the icon, the uTitleBitmap
* field in the TTGETTITLE struct is zero. The fix
* is to remember these values, only set them when then
* change and leak less.
*
* NOTE: This only happens on Vista.
*/
if (hwndToolTip != toolTipHandle && hwndToolTip != balloonTipHandle) {
return;
}
if (hwndToolTip == toolTipHandle) {
if (text == toolTitle || (toolTitle != null && toolTitle.equals (text))) {
if (icon == toolIcon) return;
}
toolTitle = text;
toolIcon = icon;
} else {
if (hwndToolTip == balloonTipHandle) {
if (text == balloonTitle || (balloonTitle != null && balloonTitle.equals (text))) {
if (icon == toolIcon) return;
}
balloonTitle = text;
balloonIcon = icon;
}
}
if (text != null) {
/*
* Feature in Windows. The text point to by pszTitle
* must not exceed 100 characters in length, including
* the null terminator.
*/
if (text.length () > 99) text = text.substring (0, 99);
TCHAR pszTitle = new TCHAR (getCodePage (), text, true);
OS.SendMessage (hwndToolTip, OS.TTM_SETTITLE, icon, pszTitle);
} else {
OS.SendMessage (hwndToolTip, OS.TTM_SETTITLE, 0, 0);
}
}
public void setVisible (boolean visible) {
checkWidget ();
/*
* Feature in Windows. When ShowWindow() is called used to hide
* a window, Windows attempts to give focus to the parent. If the
* parent is disabled by EnableWindow(), focus is assigned to
* another windows on the desktop. This means that if you hide
* a modal window before the parent is enabled, the parent will
* not come to the front. The fix is to change the modal state
* before hiding or showing a window so that this does not occur.
*/
int mask = SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL;
if ((style & mask) != 0) {
if (visible) {
display.setModalShell (this);
if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) != 0) {
display.setModalDialog (null);
}
Control control = display._getFocusControl ();
if (control != null && !control.isActive ()) {
bringToTop ();
if (isDisposed ()) return;
}
long /*int*/ hwndShell = OS.GetActiveWindow ();
if (hwndShell == 0) {
if (parent != null) hwndShell = parent.handle;
}
if (hwndShell != 0) {
OS.SendMessage (hwndShell, OS.WM_CANCELMODE, 0, 0);
}
OS.ReleaseCapture ();
} else {
display.clearModal (this);
}
} else {
updateModal ();
}
/*
* Bug in Windows. Calling ShowOwnedPopups() to hide the
* child windows of a hidden window causes the application
* to be deactivated. The fix is to call ShowOwnedPopups()
* to hide children before hiding the parent.
*/
if (showWithParent && !visible) {
if (!OS.IsWinCE) OS.ShowOwnedPopups (handle, false);
}
if (!visible) fixActiveShell ();
if (visible && center && !moved) {
center ();
if (isDisposed ()) return;
}
super.setVisible (visible);
if (isDisposed ()) return;
if (showWithParent != visible) {
showWithParent = visible;
if (visible) {
if (!OS.IsWinCE) OS.ShowOwnedPopups (handle, true);
}
}
/* Make the foreign window parent appear in the task bar */
if (visible) {
if (parent != null && (parent.state & FOREIGN_HANDLE) != 0) {
long /*int*/ hwndParent = parent.handle;
int style = OS.GetWindowLong (hwndParent, OS.GWL_EXSTYLE);
if ((style & OS.WS_EX_TOOLWINDOW) != 0) {
OS.SetWindowLong (hwndParent, OS.GWL_EXSTYLE, style & ~OS.WS_EX_TOOLWINDOW);
/*
* Bug in Windows. The window does not show in the task bar when
* WS_EX_TOOLWINDOW is removed after the window has already been shown.
* The fix is to hide and shown the shell.
*/
OS.ShowWindow (hwndParent, OS.SW_HIDE);
OS.ShowWindow (hwndParent, OS.SW_RESTORE);
}
}
}
}
void subclass () {
super.subclass ();
if (ToolTipProc != 0) {
long /*int*/ newProc = display.windowProc;
if (toolTipHandle != 0) {
OS.SetWindowLongPtr (toolTipHandle, OS.GWLP_WNDPROC, newProc);
}
if (balloonTipHandle != 0) {
OS.SetWindowLongPtr (balloonTipHandle, OS.GWLP_WNDPROC, newProc);
}
}
}
long /*int*/ toolTipHandle () {
if (toolTipHandle == 0) createToolTipHandle ();
return toolTipHandle;
}
boolean translateAccelerator (MSG msg) {
if (!isEnabled () || !isActive ()) return false;
if (menuBar != null && !menuBar.isEnabled ()) return false;
return translateMDIAccelerator (msg) || translateMenuAccelerator (msg);
}
boolean traverseEscape () {
if (parent == null) return false;
if (!isVisible () || !isEnabled ()) return false;
close ();
return true;
}
void unsubclass () {
super.unsubclass ();
if (ToolTipProc != 0) {
if (toolTipHandle != 0) {
OS.SetWindowLongPtr (toolTipHandle, OS.GWLP_WNDPROC, ToolTipProc);
}
if (toolTipHandle != 0) {
OS.SetWindowLongPtr (toolTipHandle, OS.GWLP_WNDPROC, ToolTipProc);
}
}
}
void updateModal () {
if (Display.TrimEnabled) {
setItemEnabled (OS.SC_CLOSE, isActive ());
} else {
OS.EnableWindow (handle, isActive ());
}
}
CREATESTRUCT widgetCreateStruct () {
return null;
}
long /*int*/ widgetParent () {
if (handle != 0) return handle;
return parent != null ? parent.handle : 0;
}
int widgetExtStyle () {
int bits = super.widgetExtStyle () & ~OS.WS_EX_MDICHILD;
if ((style & SWT.TOOL) != 0) bits |= OS.WS_EX_TOOLWINDOW;
/*
* Feature in Windows. When a window that does not have a parent
* is created, it is automatically added to the Windows Task Bar,
* even when it has no title. The fix is to use WS_EX_TOOLWINDOW
* which does not cause the window to appear in the Task Bar.
*/
if (!OS.IsWinCE) {
if (parent == null) {
if ((style & SWT.ON_TOP) != 0) {
int trim = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX;
if ((style & SWT.NO_TRIM) != 0 || (style & trim) == 0) {
bits |= OS.WS_EX_TOOLWINDOW;
}
}
}
}
/*
* Bug in Windows 98 and NT. Creating a window with the
* WS_EX_TOPMOST extended style can result in a dialog shell
* being moved behind its parent. The exact case where this
* happens is a shell with two dialog shell children where
* each dialog child has another hidden dialog child with
* the WS_EX_TOPMOST extended style. Clicking on either of
* the visible dialogs causes them to become active but move
* to the back, behind the parent shell. The fix is to
* disallow the WS_EX_TOPMOST extended style on Windows 98
* and NT.
*/
if (parent != null) {
if (OS.IsWin95) return bits;
if (OS.WIN32_VERSION < OS.VERSION (4, 10)) {
return bits;
}
}
if ((style & SWT.ON_TOP) != 0) bits |= OS.WS_EX_TOPMOST;
return bits;
}
TCHAR windowClass () {
if (OS.IsSP) return DialogClass;
if ((style & SWT.TOOL) != 0) {
int trim = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX | SWT.BORDER | SWT.RESIZE;
if ((style & trim) == 0) return display.windowShadowClass;
}
return parent != null ? DialogClass : super.windowClass ();
}
long /*int*/ windowProc () {
if (windowProc != 0) return windowProc;
if (OS.IsSP) return DialogProc;
if ((style & SWT.TOOL) != 0) {
int trim = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX | SWT.BORDER | SWT.RESIZE;
if ((style & trim) == 0) return super.windowProc ();
}
return parent != null ? DialogProc : super.windowProc ();
}
long /*int*/ windowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) {
if (handle == 0) return 0;
if (hwnd == toolTipHandle || hwnd == balloonTipHandle) {
switch (msg) {
case OS.WM_TIMER: {
if (wParam != ToolTip.TIMER_ID) break;
ToolTip tip = getCurrentToolTip (hwnd);
if (tip != null && tip.autoHide) {
tip.setVisible (false);
}
break;
}
case OS.WM_LBUTTONDOWN: {
ToolTip tip = getCurrentToolTip (hwnd);
if (tip != null) {
tip.setVisible (false);
tip.sendSelectionEvent (SWT.Selection);
}
break;
}
}
return callWindowProc (hwnd, msg, wParam, lParam);
}
return super.windowProc (hwnd, msg, wParam, lParam);
}
int widgetStyle () {
int bits = super.widgetStyle ();
if (handle != 0) return bits | OS.WS_CHILD;
bits &= ~OS.WS_CHILD;
/*
* Feature in WinCE. Calling CreateWindowEx () with WS_OVERLAPPED
* and a parent window causes the new window to become a WS_CHILD of
* the parent instead of a dialog child. The fix is to use WS_POPUP
* for a window with a parent.
*
* Feature in WinCE PPC. A window without a parent with WS_POPUP
* always shows on top of the Pocket PC 'Today Screen'. The fix
* is to not set WS_POPUP for a window without a parent on WinCE
* devices.
*
* NOTE: WS_POPUP causes CreateWindowEx () to ignore CW_USEDEFAULT
* and causes the default window location and size to be zero.
*/
if (OS.IsWinCE) {
if (OS.IsSP) return bits | OS.WS_POPUP;
return parent == null ? bits : bits | OS.WS_POPUP;
}
/*
* Use WS_OVERLAPPED for all windows, either dialog or top level
* so that CreateWindowEx () will respect CW_USEDEFAULT and set
* the default window location and size.
*
* NOTE: When a WS_OVERLAPPED window is created, Windows gives
* the new window WS_CAPTION style bits. These two constants are
* as follows:
*
* WS_OVERLAPPED = 0
* WS_CAPTION = WS_BORDER | WS_DLGFRAME
*
*/
return bits | OS.WS_OVERLAPPED | OS.WS_CAPTION;
}
LRESULT WM_ACTIVATE (long /*int*/ wParam, long /*int*/ lParam) {
if (OS.IsPPC) {
/*
* Note: this does not work when we get WM_ACTIVATE prior
* to adding a listener.
*/
if (hooks (SWT.HardKeyDown) || hooks (SWT.HardKeyUp)) {
int fActive = OS.LOWORD (wParam);
long /*int*/ hwnd = fActive != 0 ? handle : 0;
for (int bVk=OS.VK_APP1; bVk<=OS.VK_APP6; bVk++) {
OS.SHSetAppKeyWndAssoc ((byte) bVk, hwnd);
}
}
/* Restore SIP state when window is activated */
if (OS.LOWORD (wParam) != 0) {
OS.SHSipPreference (handle, psai.fSipUp == 0 ? OS.SIP_DOWN : OS.SIP_UP);
}
}
/*
* Bug in Windows XP. When a Shell is deactivated, the
* IME composition window does not go away. This causes
* repaint issues. The fix is to commit the composition
* string.
*/
if (OS.WIN32_VERSION >= OS.VERSION (5, 1)) {
if (OS.LOWORD (wParam) == 0 && OS.IsDBLocale && hIMC != 0) {
if (OS.ImmGetOpenStatus (hIMC)) {
OS.ImmNotifyIME (hIMC, OS.NI_COMPOSITIONSTR, OS.CPS_COMPLETE, 0);
}
}
}
/* Process WM_ACTIVATE */
LRESULT result = super.WM_ACTIVATE (wParam, lParam);
if (OS.LOWORD (wParam) == 0) {
if (lParam == 0 || (lParam != toolTipHandle && lParam != balloonTipHandle)) {
ToolTip tip = getCurrentToolTip ();
if (tip != null) tip.setVisible (false);
}
}
return parent != null ? LRESULT.ZERO : result;
}
LRESULT WM_COMMAND (long /*int*/ wParam, long /*int*/ lParam) {
if (OS.IsPPC) {
/*
* Note in WinCE PPC: Close the Shell when the "Done Button" has
* been pressed. lParam is either 0 (PocketPC 2002) or the handle
* to the Shell (PocketPC).
*/
int loWord = OS.LOWORD (wParam);
if (loWord == OS.IDOK && (lParam == 0 || lParam == handle)) {
OS.PostMessage (handle, OS.WM_CLOSE, 0, 0);
return LRESULT.ZERO;
}
}
/*
* Feature in Windows. On PPC, the menu is not actually an HMENU.
* By observation, it is a tool bar that is configured to look like
* a menu. Therefore, when the PPC menu sends WM_COMMAND messages,
* lParam is not zero because the WM_COMMAND was not sent from a menu.
* Sub menu item events originate from the menu bar. Top menu items
* events originate from a tool bar. The fix is to detect the source
* of the WM_COMMAND and set lParam to zero to pretend that the message
* came from a real Windows menu, not a tool bar.
*/
if (OS.IsPPC || OS.IsSP) {
if (menuBar != null) {
long /*int*/ hwndCB = menuBar.hwndCB;
if (lParam != 0 && hwndCB != 0) {
if (lParam == hwndCB) {
return super.WM_COMMAND (wParam, 0);
} else {
long /*int*/ hwndChild = OS.GetWindow (hwndCB, OS.GW_CHILD);
if (lParam == hwndChild) return super.WM_COMMAND (wParam, 0);
}
}
}
}
return super.WM_COMMAND (wParam, lParam);
}
LRESULT WM_DESTROY (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_DESTROY (wParam, lParam);
/*
* When the shell is a WS_CHILD window of a non-SWT
* window, the destroy code does not get called because
* the non-SWT window does not call dispose (). Instead,
* the destroy code is called here in WM_DESTROY.
*/
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
if ((bits & OS.WS_CHILD) != 0) {
releaseParent ();
release (false);
}
return result;
}
LRESULT WM_ERASEBKGND (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_ERASEBKGND (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. When a shell is resized by dragging
* the resize handles, Windows temporarily fills in black
* rectangles where the new contents of the shell should
* draw. The fix is to always draw the background of shells.
*
* NOTE: This only happens on Vista.
*/
if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (6, 0)) {
drawBackground (wParam);
return LRESULT.ONE;
}
return result;
}
LRESULT WM_ENTERIDLE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_ENTERIDLE (wParam, lParam);
if (result != null) return result;
Display display = this.display;
if (display.runMessages) {
if (display.runAsyncMessages (false)) display.wakeThread ();
}
return result;
}
LRESULT WM_GETMINMAXINFO (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_GETMINMAXINFO (wParam, lParam);
if (result != null) return result;
if (minWidth != SWT.DEFAULT || minHeight != SWT.DEFAULT) {
MINMAXINFO info = new MINMAXINFO ();
OS.MoveMemory (info, lParam, MINMAXINFO.sizeof);
if (minWidth != SWT.DEFAULT) info.ptMinTrackSize_x = minWidth;
if (minHeight != SWT.DEFAULT) info.ptMinTrackSize_y = minHeight;
OS.MoveMemory (lParam, info, MINMAXINFO.sizeof);
return LRESULT.ZERO;
}
return result;
}
LRESULT WM_MOUSEACTIVATE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_MOUSEACTIVATE (wParam, lParam);
if (result != null) return result;
/*
* Check for WM_MOUSEACTIVATE when an MDI shell is active
* and stop the normal shell activation but allow the mouse
* down to be delivered.
*/
int hittest = (short) OS.LOWORD (lParam);
switch (hittest) {
case OS.HTERROR:
case OS.HTTRANSPARENT:
case OS.HTNOWHERE:
break;
default: {
Control control = display._getFocusControl ();
if (control != null) {
Decorations decorations = control.menuShell ();
if (decorations.getShell () == this && decorations != this) {
display.ignoreRestoreFocus = true;
display.lastHittest = hittest;
display.lastHittestControl = null;
if (hittest == OS.HTMENU || hittest == OS.HTSYSMENU) {
display.lastHittestControl = control;
return null;
}
if (OS.IsWin95 && hittest == OS.HTCAPTION) {
display.lastHittestControl = control;
}
return new LRESULT (OS.MA_NOACTIVATE);
}
}
}
}
if (hittest == OS.HTMENU) return null;
/*
* Get the current location of the cursor,
* not the location of the cursor when the
* WM_MOUSEACTIVATE was generated. This is
* strictly incorrect but is necessary in
* order to support Activate and Deactivate
* events for embedded widgets that have
* their own event loop. In that case, the
* cursor location reported by GetMessagePos()
* is the one for our event loop, not the
* embedded widget's event loop.
*/
POINT pt = new POINT ();
if (!OS.GetCursorPos (pt)) {
int pos = OS.GetMessagePos ();
OS.POINTSTOPOINT (pt, pos);
}
long /*int*/ hwnd = OS.WindowFromPoint (pt);
if (hwnd == 0) return null;
Control control = display.findControl (hwnd);
/*
* When a shell is created with SWT.ON_TOP and SWT.NO_FOCUS,
* do not activate the shell when the user clicks on the
* the client area or on the border or a control within the
* shell that does not take focus.
*/
if (control != null && (control.state & CANVAS) != 0) {
if ((control.style & SWT.NO_FOCUS) != 0) {
int bits = SWT.ON_TOP | SWT.NO_FOCUS;
if ((style & bits) == bits) {
if (hittest == OS.HTBORDER || hittest == OS.HTCLIENT) {
return new LRESULT (OS.MA_NOACTIVATE);
}
}
}
}
long /*int*/ code = callWindowProc (handle, OS.WM_MOUSEACTIVATE, wParam, lParam);
setActiveControl (control, SWT.MouseDown);
return new LRESULT (code);
}
LRESULT WM_MOVE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_MOVE (wParam, lParam);
if (result != null) return result;
ToolTip tip = getCurrentToolTip ();
if (tip != null) tip.setVisible (false);
return result;
}
LRESULT WM_NCHITTEST (long /*int*/ wParam, long /*int*/ lParam) {
if (!OS.IsWindowEnabled (handle)) return null;
if (!isEnabled () || !isActive ()) {
if (!Display.TrimEnabled) return new LRESULT (OS.HTNOWHERE);
long /*int*/ hittest = callWindowProc (handle, OS.WM_NCHITTEST, wParam, lParam);
if (hittest == OS.HTCLIENT || hittest == OS.HTMENU) hittest = OS.HTBORDER;
return new LRESULT (hittest);
}
if (menuBar != null && !menuBar.getEnabled ()) {
long /*int*/ hittest = callWindowProc (handle, OS.WM_NCHITTEST, wParam, lParam);
if (hittest == OS.HTMENU) hittest = OS.HTBORDER;
return new LRESULT (hittest);
}
return null;
}
LRESULT WM_NCLBUTTONDOWN (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_NCLBUTTONDOWN (wParam, lParam);
if (result != null) return result;
/*
* When the normal activation was interrupted in WM_MOUSEACTIVATE
* because the active shell was an MDI shell, set the active window
* to the top level shell but lock the active window and stop focus
* changes. This allows the user to interact the top level shell
* in the normal manner.
*/
if (!display.ignoreRestoreFocus) return result;
Display display = this.display;
long /*int*/ hwndActive = 0;
boolean fixActive = OS.IsWin95 && display.lastHittest == OS.HTCAPTION;
if (fixActive) hwndActive = OS.SetActiveWindow (handle);
display.lockActiveWindow = true;
long /*int*/ code = callWindowProc (handle, OS.WM_NCLBUTTONDOWN, wParam, lParam);
display.lockActiveWindow = false;
if (fixActive) OS.SetActiveWindow (hwndActive);
Control focusControl = display.lastHittestControl;
if (focusControl != null && !focusControl.isDisposed ()) {
focusControl.setFocus ();
}
display.lastHittestControl = null;
display.ignoreRestoreFocus = false;
return new LRESULT (code);
}
LRESULT WM_PALETTECHANGED (long /*int*/ wParam, long /*int*/ lParam) {
if (wParam != handle) {
long /*int*/ hPalette = display.hPalette;
if (hPalette != 0) return selectPalette (hPalette);
}
return super.WM_PALETTECHANGED (wParam, lParam);
}
LRESULT WM_QUERYNEWPALETTE (long /*int*/ wParam, long /*int*/ lParam) {
long /*int*/ hPalette = display.hPalette;
if (hPalette != 0) return selectPalette (hPalette);
return super.WM_QUERYNEWPALETTE (wParam, lParam);
}
LRESULT WM_SETCURSOR (long /*int*/ wParam, long /*int*/ lParam) {
/*
* Feature in Windows. When the shell is disabled
* by a Windows standard dialog (like a MessageBox
* or FileDialog), clicking in the shell does not
* bring the shell or the dialog to the front. The
* fix is to detect this case and bring the shell
* forward.
*/
int msg = OS.HIWORD (lParam);
if (msg == OS.WM_LBUTTONDOWN) {
if (!Display.TrimEnabled) {
Shell modalShell = display.getModalShell ();
if (modalShell != null && !isActive ()) {
long /*int*/ hwndModal = modalShell.handle;
if (OS.IsWindowEnabled (hwndModal)) {
OS.SetActiveWindow (hwndModal);
}
}
}
if (!OS.IsWindowEnabled (handle)) {
if (!OS.IsWinCE) {
long /*int*/ hwndPopup = OS.GetLastActivePopup (handle);
if (hwndPopup != 0 && hwndPopup != handle) {
if (display.getControl (hwndPopup) == null) {
if (OS.IsWindowEnabled (hwndPopup)) {
OS.SetActiveWindow (hwndPopup);
}
}
}
}
}
}
/*
* When the shell that contains a cursor is disabled,
* WM_SETCURSOR is called with HTERROR. Normally,
* when a control is disabled, the parent will get
* mouse and cursor events. In the case of a disabled
* shell, there is no enabled parent. In order to
* show the cursor when a shell is disabled, it is
* necessary to override WM_SETCURSOR when called
* with HTERROR to set the cursor but only when the
* mouse is in the client area of the shell.
*/
int hitTest = (short) OS.LOWORD (lParam);
if (hitTest == OS.HTERROR) {
if (!getEnabled ()) {
Control control = display.getControl (wParam);
if (control == this && cursor != null) {
POINT pt = new POINT ();
int pos = OS.GetMessagePos ();
OS.POINTSTOPOINT (pt, pos);
OS.ScreenToClient (handle, pt);
RECT rect = new RECT ();
OS.GetClientRect (handle, rect);
if (OS.PtInRect (rect, pt)) {
OS.SetCursor (cursor.handle);
switch (msg) {
case OS.WM_LBUTTONDOWN:
case OS.WM_RBUTTONDOWN:
case OS.WM_MBUTTONDOWN:
case OS.WM_XBUTTONDOWN:
OS.MessageBeep (OS.MB_OK);
}
return LRESULT.ONE;
}
}
}
}
return super.WM_SETCURSOR (wParam, lParam);
}
LRESULT WM_SETTINGCHANGE (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_SETTINGCHANGE (wParam, lParam);
if (result != null) return result;
if (OS.IsPPC) {
if (wParam == OS.SPI_SETSIPINFO) {
/*
* The SIP is in a new state. Cache its new value.
* Resize the Shell if it has the style SWT.RESIZE.
* Note that SHHandleWMSettingChange resizes the
* Shell and also updates the cached state.
*/
if ((style & SWT.RESIZE) != 0) {
OS.SHHandleWMSettingChange (handle, wParam, lParam, psai);
return LRESULT.ZERO;
} else {
SIPINFO pSipInfo = new SIPINFO ();
pSipInfo.cbSize = SIPINFO.sizeof;
OS.SipGetInfo (pSipInfo);
psai.fSipUp = pSipInfo.fdwFlags & OS.SIPF_ON;
}
}
}
return result;
}
LRESULT WM_SHOWWINDOW (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_SHOWWINDOW (wParam, lParam);
if (result != null) return result;
/*
* Bug in Windows. If the shell is hidden while the parent
* is iconic, Windows shows the shell when the parent is
* deiconified. This does not happen if the shell is hidden
* while the parent is not an icon. The fix is to track
* visible state for the shell and refuse to show the shell
* when the parent is shown.
*/
if (lParam == OS.SW_PARENTOPENING) {
Control control = this;
while (control != null) {
Shell shell = control.getShell ();
if (!shell.showWithParent) return LRESULT.ZERO;
control = control.parent;
}
}
return result;
}
LRESULT WM_SYSCOMMAND (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_SYSCOMMAND (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. When the last visible window in
* a process is minimized, Windows swaps out the memory for
* the process. The assumption is that the user can no
* longer interact with the window, so the memory can be
* released to other applications. However, for programs
* that use a lot of memory, swapping the memory back in
* can take a long time, sometimes minutes. The fix is
* to intercept WM_SYSCOMMAND looking for SC_MINIMIZE
* and use ShowWindow() with SW_SHOWMINIMIZED to minimize
* the window, rather than running the default window proc.
*
* NOTE: The default window proc activates the next
* top-level window in the Z-order while ShowWindow()
* with SW_SHOWMINIMIZED does not. There is no fix for
* this at this time.
*/
if (OS.IsWinNT) {
int cmd = (int)/*64*/wParam & 0xFFF0;
switch (cmd) {
case OS.SC_MINIMIZE:
Shell [] shells = display.getShells ();
int count = 0;
for (int i = 0; i < shells.length; i++) {
Shell shell = shells [i];
if (shell != null && shell.getVisible () && !shell.getMinimized ()) {
count++;
}
}
if (count > 1) break;
long memory = Runtime.getRuntime ().totalMemory ();
if (memory >= 32 * 1024 * 1024) {
OS.ShowWindow (handle, OS.SW_SHOWMINIMIZED);
return LRESULT.ZERO;
}
}
}
return result;
}
LRESULT WM_WINDOWPOSCHANGING (long /*int*/ wParam, long /*int*/ lParam) {
LRESULT result = super.WM_WINDOWPOSCHANGING (wParam,lParam);
if (result != null) return result;
WINDOWPOS lpwp = new WINDOWPOS ();
OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof);
if ((lpwp.flags & OS.SWP_NOSIZE) == 0) {
lpwp.cx = Math.max (lpwp.cx, minWidth);
int trim = SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX;
if ((style & SWT.NO_TRIM) == 0 && (style & trim) != 0) {
lpwp.cx = Math.max (lpwp.cx, OS.GetSystemMetrics (OS.SM_CXMINTRACK));
}
lpwp.cy = Math.max (lpwp.cy, minHeight);
if ((style & SWT.NO_TRIM) == 0 && (style & trim) != 0) {
if ((style & SWT.RESIZE) != 0) {
lpwp.cy = Math.max (lpwp.cy, OS.GetSystemMetrics (OS.SM_CYMINTRACK));
} else {
RECT rect = new RECT ();
int bits1 = OS.GetWindowLong (handle, OS.GWL_STYLE);
int bits2 = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
OS.AdjustWindowRectEx (rect, bits1, false, bits2);
lpwp.cy = Math.max (lpwp.cy, rect.bottom - rect.top);
}
}
OS.MoveMemory (lParam, lpwp, WINDOWPOS.sizeof);
}
return result;
}
}