Merge branch 'master' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into master-integration

* 'master' of scm.dev.nokia.troll.no:qt/oslo-staging-1: (42 commits)
  doc:	Fixed some qdoc errors.
  doc:	Fixed some qdoc errors.
  Fix copyright year.
  Fix broken license headers.
  doc:	Fixed some qdoc errors.
  Reusing sheets on Mac OS X 10.5 & above shows painting artifacts.
  doc:	Fixed some qdoc errors.
  QNetworkAccessManager: add method to send custom requests
  doc:	Fixed some qdoc errors.
  Optimization: Avoid calling out to public API function
  Mac: submenu shows up at the wrong position
  Add operator< and qHash for QSharedPointer and fix operator-.
  Don't use QSystemLocale if QT_NO_SYSTEMLOCALE (like QWS)
  Don't use QSystemLocale if QT_NO_SYSTEMLOCALE (like QWS)
  Optimized QLocale to access system locale on demand.
  Fix QRegion under Mac OS X.
  update according to Thiago's comments.
  Changes: add functionality for dbus auto start to qt
  Add license header to this file
  readdir64 is not available on HP-UX
  ...

17 files changed, 212 insertions, 65 deletions

diff --git a/src/gui/dialogs/qfiledialog_win_p.h b/src/gui/dialogs/qfiledialog_win_p.h
index 527ab3f..44b7e43 100644
--- a/src/gui/dialogs/qfiledialog_win_p.h
+++ b/src/gui/dialogs/qfiledialog_win_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/gui/kernel/qapplication_mac.mm b/src/gui/kernel/qapplication_mac.mm
index 25c98c5..e511c3a 100644
--- a/src/gui/kernel/qapplication_mac.mm
+++ b/src/gui/kernel/qapplication_mac.mm
@@ -1237,7 +1237,7 @@ void qt_init(QApplicationPrivate *priv, int)
 
     // Cocoa application delegate
 #ifdef QT_MAC_USE_COCOA
-    NSApplication *cocoaApp = [NSApplication sharedApplication];
+    NSApplication *cocoaApp = [QNSApplication sharedApplication];
     QMacCocoaAutoReleasePool pool;
     NSObject *oldDelegate = [cocoaApp delegate];
     QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) *newDelegate = [QT_MANGLE_NAMESPACE(QCocoaApplicationDelegate) sharedDelegate];
diff --git a/src/gui/kernel/qapplication_win.cpp b/src/gui/kernel/qapplication_win.cpp
index 0a4869b..b71a1bb 100644
--- a/src/gui/kernel/qapplication_win.cpp
+++ b/src/gui/kernel/qapplication_win.cpp
@@ -2551,6 +2551,17 @@ LRESULT CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam
             result = true;
             break;
         }
+#ifndef QT_NO_CURSOR
+        case WM_SETCURSOR: {
+            QCursor *ovr = QApplication::overrideCursor();
+            if (ovr) {
+                SetCursor(ovr->handle());
+                RETURN(TRUE);
+            }
+            result = false;
+            break;
+        }
+#endif
         default:
             result = false;                        // event was not processed
             break;
diff --git a/src/gui/kernel/qcocoaapplication_mac.mm b/src/gui/kernel/qcocoaapplication_mac.mm
index 5b98420..5629940 100644
--- a/src/gui/kernel/qcocoaapplication_mac.mm
+++ b/src/gui/kernel/qcocoaapplication_mac.mm
@@ -107,5 +107,50 @@
             | NSFontPanelStrikethroughEffectModeMask;
 }
 
+
+- (void)qt_sendPostedMessage:(NSEvent *)event
+{
+    // WARNING: data1 and data2 is truncated to from 64-bit to 32-bit on OS 10.5! 
+    // That is why we need to split the address in two parts:
+    quint64 lower = [event data1];
+    quint64 upper = [event data2];
+    QCocoaPostMessageArgs *args = reinterpret_cast<QCocoaPostMessageArgs *>(lower | (upper << 32));
+    [args->target performSelector:args->selector];
+    delete args;
+}
+
+- (BOOL)qt_sendEvent:(NSEvent *)event
+{
+    if ([event type] == NSApplicationDefined) {
+        switch ([event subtype]) {
+            case QtCocoaEventSubTypePostMessage:
+                [NSApp qt_sendPostedMessage:event];
+                return true;
+            default:
+                break;
+        }
+    }
+    return false;
+}
+
 @end
+
+@implementation QNSApplication
+
+// WARNING: If Qt did not create NSApplication (this can e.g.
+// happend if Qt is used as a plugin from a 3rd-party cocoa
+// application), QNSApplication::sendEvent will never be called.
+// SO DO NOT RELY ON THIS FUNCTION BEING AVAILABLE. 
+// Plugin developers that _do_ control the NSApplication sub-class
+// implementation of the 3rd-party application can call qt_sendEvent
+// from the sub-class event handler (like we do here) to work around
+// any issues.
+- (void)sendEvent:(NSEvent *)event
+{
+    if (![self qt_sendEvent:event])
+        [super sendEvent:event];
+}
+
+@end
+
 #endif
diff --git a/src/gui/kernel/qcocoaapplication_mac_p.h b/src/gui/kernel/qcocoaapplication_mac_p.h
index e845d58..5569feb 100644
--- a/src/gui/kernel/qcocoaapplication_mac_p.h
+++ b/src/gui/kernel/qcocoaapplication_mac_p.h
@@ -99,5 +99,13 @@ QT_FORWARD_DECLARE_CLASS(QApplicationPrivate)
 - (QApplicationPrivate *)QT_MANGLE_NAMESPACE(qt_qappPrivate);
 - (QT_MANGLE_NAMESPACE(QCocoaMenuLoader) *)QT_MANGLE_NAMESPACE(qt_qcocoamenuLoader);
 - (int)QT_MANGLE_NAMESPACE(qt_validModesForFontPanel):(NSFontPanel *)fontPanel;
+
+- (void)qt_sendPostedMessage:(NSEvent *)event;
+- (BOOL)qt_sendEvent:(NSEvent *)event;
+@end
+
+@interface QNSApplication : NSApplication {
+}
 @end
+
 #endif
diff --git a/src/gui/kernel/qcocoamenuloader_mac.mm b/src/gui/kernel/qcocoamenuloader_mac.mm
index 18b3772..573b763 100644
--- a/src/gui/kernel/qcocoamenuloader_mac.mm
+++ b/src/gui/kernel/qcocoamenuloader_mac.mm
@@ -46,6 +46,7 @@
 #include <private/qcocoamenuloader_mac_p.h>
 #include <private/qapplication_p.h>
 #include <private/qt_mac_p.h>
+#include <private/qmenubar_p.h>
 #include <qmenubar.h>
 
 QT_FORWARD_DECLARE_CLASS(QCFString)
@@ -208,6 +209,11 @@ QT_USE_NAMESPACE
     [NSApp hide:sender];
 }
 
+- (void)qtUpdateMenubar
+{
+    QMenuBarPrivate::macUpdateMenuBarImmediatly();
+}
+
 - (IBAction)qtDispatcherToQAction:(id)sender
 {
     QScopedLoopLevelCounter loopLevelCounter(QApplicationPrivate::instance()->threadData);
diff --git a/src/gui/kernel/qcocoamenuloader_mac_p.h b/src/gui/kernel/qcocoamenuloader_mac_p.h
index 81c136e..2504b8c 100644
--- a/src/gui/kernel/qcocoamenuloader_mac_p.h
+++ b/src/gui/kernel/qcocoamenuloader_mac_p.h
@@ -85,6 +85,7 @@
 - (IBAction)unhideAllApplications:(id)sender;
 - (IBAction)hide:(id)sender;
 - (IBAction)qtDispatcherToQAction:(id)sender;
+- (void)qtUpdateMenubar;
 @end
 
 #endif // QT_MAC_USE_COCOA
diff --git a/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h b/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
index a1d2c61..9fe5ae0 100644
--- a/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
+++ b/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
@@ -183,8 +183,18 @@ QT_END_NAMESPACE
 
 - (void)sendEvent:(NSEvent *)event
 {
-    QWidget *widget = [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] qt_qwidgetForWindow:self];
+    if ([event type] == NSApplicationDefined) {
+        switch ([event subtype]) {
+            case QtCocoaEventSubTypePostMessage:
+                [NSApp qt_sendPostedMessage:event];
+                return;
+            default:
+                break;
+        }
+        return;
+    }
 
+    QWidget *widget = [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] qt_qwidgetForWindow:self];
     // Cocoa can hold onto the window after we've disavowed its knowledge. So,
     // if we get sent an event afterwards just have it go through the super's
     // version and don't do any stuff with Qt.
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 873fb7e..ec00583 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -489,7 +489,15 @@ extern "C" {
             qWarning("QWidget::repaint: Recursive repaint detected");
 
         const QRect qrect = QRect(aRect.origin.x, aRect.origin.y, aRect.size.width, aRect.size.height);
-        QRegion qrgn(qrect);
+        QRegion qrgn;
+
+	const NSRect *rects;
+	NSInteger count;
+	[self getRectsBeingDrawn:&rects count:&count];
+	for (int i = 0; i < count; ++i) {
+	    QRect tmpRect = QRect(rects[i].origin.x, rects[i].origin.y, rects[i].size.width, rects[i].size.height);
+	    qrgn += tmpRect;
+	}
 
         if (!qwidget->isWindow() && !qobject_cast<QAbstractScrollArea *>(qwidget->parent())) {
             const QRegion &parentMask = qwidget->window()->mask();
diff --git a/src/gui/kernel/qeventdispatcher_mac.mm b/src/gui/kernel/qeventdispatcher_mac.mm
index c7d042d..8a67dee 100644
--- a/src/gui/kernel/qeventdispatcher_mac.mm
+++ b/src/gui/kernel/qeventdispatcher_mac.mm
@@ -1064,10 +1064,9 @@ void QEventDispatcherMacPrivate::cancelWaitForMoreEvents()
     // In case the event dispatcher is waiting for more
     // events somewhere, we post a dummy event to wake it up:
     QMacCocoaAutoReleasePool pool;
-    static const short NSAppShouldStopForQt = SHRT_MAX;
     [NSApp postEvent:[NSEvent otherEventWithType:NSApplicationDefined location:NSZeroPoint
         modifierFlags:0 timestamp:0. windowNumber:0 context:0
-        subtype:NSAppShouldStopForQt data1:0 data2:0] atStart:NO];
+        subtype:QtCocoaEventSubTypeWakeup data1:0 data2:0] atStart:NO];
 }
 #endif
 
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac.mm b/src/gui/kernel/qt_cocoa_helpers_mac.mm
index 4e51cf4..f2ec4af 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -83,6 +83,7 @@
 #include <private/qt_cocoa_helpers_mac_p.h>
 #include <private/qt_mac_p.h>
 #include <private/qapplication_p.h>
+#include <private/qcocoaapplication_mac_p.h>
 #include <private/qcocoawindow_mac_p.h>
 #include <private/qcocoaview_mac_p.h>
 #include <private/qkeymapper_p.h>
@@ -1279,22 +1280,42 @@ void qt_cocoaChangeOverrideCursor(const QCursor &cursor)
     QMacCocoaAutoReleasePool pool;
     [static_cast<NSCursor *>(qt_mac_nsCursorForQCursor(cursor)) set];
 }
-#endif
 
-@implementation DebugNSApplication {
-}
-- (void)sendEvent:(NSEvent *)event
+//  WARNING: If Qt did not create NSApplication (e.g. in case it is
+//  used as a plugin), and at the same time, there is no window on
+//  screen (or the window that the event is sendt to becomes hidden etc
+//  before the event gets delivered), the message will not be performed.
+bool qt_cocoaPostMessage(id target, SEL selector)
 {
-    NSLog(@"NSAppDebug: sendEvent: %@", event);
-    return [super sendEvent:event];
-}
+    if (!target)
+        return false;
 
-- (BOOL)sendAction:(SEL)anAction to:(id)aTarget from:(id)sender
-{
-    NSLog(@"NSAppDebug: sendAction: %s to %@ from %@", anAction, aTarget, sender);
-    return [super sendAction:anAction to:aTarget from:sender];
+    NSInteger windowNumber = 0;
+    if (![NSApp isMemberOfClass:[QNSApplication class]]) {
+        // INVARIANT: Cocoa is not using our NSApplication subclass. That means
+        // we don't control the main event handler either. So target the event
+        // for one of the windows on screen:
+        NSWindow *nswin = [NSApp mainWindow];
+        if (!nswin) {
+            nswin = [NSApp keyWindow];
+            if (!nswin)
+                return false;
+        }
+        windowNumber = [nswin windowNumber];
+    }
+
+    // WARNING: data1 and data2 is truncated to from 64-bit to 32-bit on OS 10.5! 
+    // That is why we need to split the address in two parts:
+    QCocoaPostMessageArgs *args = new QCocoaPostMessageArgs(target, selector);
+    quint32 lower = quintptr(args);
+    quint32 upper = quintptr(args) >> 32;
+    NSEvent *e = [NSEvent otherEventWithType:NSApplicationDefined
+        location:NSZeroPoint modifierFlags:0 timestamp:0 windowNumber:windowNumber
+        context:nil subtype:QtCocoaEventSubTypePostMessage data1:lower data2:upper];
+    [NSApp postEvent:e atStart:NO];
+    return true;
 }
-@end
+#endif
 
 QMacCocoaAutoReleasePool::QMacCocoaAutoReleasePool()
 {
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac_p.h b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
index ace8255..c43ea55 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac_p.h
+++ b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
@@ -114,6 +114,12 @@ typedef struct CGPoint NSPoint;
 #endif
 
 QT_BEGIN_NAMESPACE
+
+enum {
+    QtCocoaEventSubTypeWakeup       = SHRT_MAX,
+    QtCocoaEventSubTypePostMessage  = SHRT_MAX-1
+};
+
 Qt::MouseButtons qt_mac_get_buttons(int buttons);
 Qt::MouseButton qt_mac_get_button(EventMouseButton button);
 void macWindowFade(void * /*OSWindowRef*/ window, float durationSeconds = 0.15);
@@ -182,8 +188,23 @@ inline QString qt_mac_NSStringToQString(const NSString *nsstr)
 inline NSString *qt_mac_QStringToNSString(const QString &qstr)
 { return [reinterpret_cast<const NSString *>(QCFString::toCFStringRef(qstr)) autorelease]; }
 
-@interface DebugNSApplication : NSApplication {}
-@end
+#ifdef QT_MAC_USE_COCOA
+class QCocoaPostMessageArgs {
+public:
+    id target;
+    SEL selector;
+    QCocoaPostMessageArgs(id target, SEL selector) : target(target), selector(selector)
+    {
+        [target retain];
+    }
+
+    ~QCocoaPostMessageArgs()
+    {
+        [target release];
+    }
+};
+bool qt_cocoaPostMessage(id target, SEL selector);
+#endif
 
 #endif
 
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index a5633d3..9e642b9 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -3346,38 +3346,20 @@ void QWidgetPrivate::show_sys()
         return;
 
     bool realWindow = isRealWindow();
+#ifndef QT_MAC_USE_COCOA
     if (realWindow && !q->testAttribute(Qt::WA_Moved)) {
+        if (qt_mac_is_macsheet(q))
+            recreateMacWindow();
         q->createWinId();
         if (QWidget *p = q->parentWidget()) {
             p->createWinId();
-#ifndef QT_MAC_USE_COCOA
             RepositionWindow(qt_mac_window_for(q), qt_mac_window_for(p), kWindowCenterOnParentWindow);
-#else
-            CGRect parentFrame = NSRectToCGRect([qt_mac_window_for(p) frame]);
-            OSWindowRef windowRef = qt_mac_window_for(q);
-            NSRect windowFrame = [windowRef frame];
-            NSPoint parentCenter = NSMakePoint(CGRectGetMidX(parentFrame), CGRectGetMidY(parentFrame));
-            [windowRef setFrameTopLeftPoint:NSMakePoint(parentCenter.x - (windowFrame.size.width / 2),
-                                                        (parentCenter.y + (windowFrame.size.height / 2)))];
-#endif
         } else {
-#ifndef QT_MAC_USE_COCOA
             RepositionWindow(qt_mac_window_for(q), 0, kWindowCenterOnMainScreen);
-#else
-            // Ideally we would do a "center" here, but NSWindow's center is more equivalent to
-            // kWindowAlertPositionOnMainScreen instead of kWindowCenterOnMainScreen.
-            QRect availGeo = QApplication::desktop()->availableGeometry(q);
-            // Center the content only.
-            data.crect.moveCenter(availGeo.center());
-            QRect fStrut = frameStrut();
-            QRect frameRect(data.crect.x() - fStrut.left(), data.crect.y() - fStrut.top(),
-                            fStrut.left() + fStrut.right() + data.crect.width(),
-                            fStrut.top() + fStrut.bottom() + data.crect.height());
-            NSRect cocoaFrameRect = NSMakeRect(frameRect.x(), flipYCoordinate(frameRect.bottom() + 1), frameRect.width(), frameRect.height());
-            [qt_mac_window_for(q) setFrame:cocoaFrameRect display:NO];
-#endif
         }
     }
+#endif
+
     data.fstrut_dirty = true;
     if (realWindow) {
          // Delegates can change window state, so record some things earlier.
@@ -4270,6 +4252,22 @@ void QWidgetPrivate::setGeometry_sys(int x, int y, int w, int h, bool isMove)
             setGeometry_sys_helper(x, y, w, h, isMove);
         }
 #else
+        if (!isMove && !q->testAttribute(Qt::WA_Moved) && !q->isVisible()) {
+            // INVARIANT: The location of the window has not yet been set. The default will
+            // instead be to center it on the desktop, or over the parent, if any. Since we now
+            // resize the window, we need to adjust the top left position to keep the window
+            // centeralized. And we need to to this now (and before show) in case the positioning
+            // of other windows (e.g. sub-windows) depend on this position:
+            if (QWidget *p = q->parentWidget()) {
+                x = p->geometry().center().x() - (w / 2);
+                y = p->geometry().center().y() - (h / 2);
+            } else {
+                QRect availGeo = QApplication::desktop()->availableGeometry(q);
+                x = availGeo.center().x() - (w / 2);
+                y = availGeo.center().y() - (h / 2);
+            }
+        }
+
         QSize  olds = q->size();
         const bool isResize = (olds != QSize(w, h));
         NSWindow *window = qt_mac_window_for(q);
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index 80931c9..e1cfa9c 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -435,16 +435,23 @@ void QTextDocument::redo(QTextCursor *cursor)
     }
 }
 
+/*! \enum QTextDocument::Stacks
+  
+  \value UndoStack              The undo stack.
+  \value RedoStack              The redo stack.
+  \value UndoAndRedoStacks      Both the undo and redo stacks.
+*/
+        
 /*!
     \since 4.7
-    Clears the specified stacks.
+    Clears the stacks specified by \a stacksToClear.
 
-    This method clears any commands on the undo stack, the redo stack, or both (the
-    default). If any commands got cleared, the appropriate signals
-    (\a QTextDocument::undoAvailable or \a QTextDocument::redoAvailable) get
-    emitted.
+    This method clears any commands on the undo stack, the redo stack,
+    or both (the default). If commands are cleared, the appropriate
+    signals are emitted, QTextDocument::undoAvailable() or
+    QTextDocument::redoAvailable().
 
-    \sa QTextDocument::undoAvailable QTextDocument::redoAvailable
+    \sa QTextDocument::undoAvailable() QTextDocument::redoAvailable()
 */
 void QTextDocument::clearUndoRedoStacks(Stacks stacksToClear)
 {
diff --git a/src/gui/widgets/qdialogbuttonbox.cpp b/src/gui/widgets/qdialogbuttonbox.cpp
index 6a0e363..cc74a53 100644
--- a/src/gui/widgets/qdialogbuttonbox.cpp
+++ b/src/gui/widgets/qdialogbuttonbox.cpp
@@ -103,7 +103,7 @@ QT_BEGIN_NAMESPACE
     You can mix and match normal buttons and standard buttons.
 
     Currently the buttons are laid out in the following way if the button box is horizontal:
-    \table 100%
+    \table
     \row \o \inlineimage buttonbox-gnomelayout-horizontal.png GnomeLayout Horizontal
          \o Button box laid out in horizontal GnomeLayout
     \row \o \inlineimage buttonbox-kdelayout-horizontal.png KdeLayout Horizontal
@@ -116,25 +116,23 @@ QT_BEGIN_NAMESPACE
 
     The buttons are laid out the following way if the button box is vertical:
 
-    \table 100%
+    \table
+    \row \o GnomeLayout
+         \o KdeLayout
+         \o MacLayout
+         \o WinLayout
     \row \o \inlineimage buttonbox-gnomelayout-vertical.png GnomeLayout Vertical
-         \o Button box laid out in vertical GnomeLayout
-    \row \o \inlineimage buttonbox-kdelayout-vertical.png KdeLayout Vertical
-         \o Button box laid out in vertical KdeLayout
-    \row \o \inlineimage buttonbox-maclayout-vertical.png MacLayout Vertical
-         \o Button box laid out in vertical MacLayout
-    \row \o \inlineimage buttonbox-winlayout-vertical.png WinLayout Vertical
-         \o Button box laid out in vertical WinLayout
+         \o \inlineimage buttonbox-kdelayout-vertical.png KdeLayout Vertical
+         \o \inlineimage buttonbox-maclayout-vertical.png MacLayout Vertical
+         \o \inlineimage buttonbox-winlayout-vertical.png WinLayout Vertical
     \endtable
 
     Additionally, button boxes that contain only buttons with ActionRole or
-    HelpRole can be considered modeless and have an alternate look on the mac:
+    HelpRole can be considered modeless and have an alternate look on Mac OS X:
 
-    \table 100%
-    \row \o \inlineimage buttonbox-mac-modeless-horizontal.png Screenshot of modeless horizontal MacLayout
-         \o modeless horizontal MacLayout
-    \row \o \inlineimage buttonbox-mac-modeless-vertical.png Screenshot of modeless vertical MacLayout
-         \o modeless vertical MacLayout
+    \table
+    \row \o modeless horizontal MacLayout
+         \o \inlineimage buttonbox-mac-modeless-horizontal.png Screenshot of modeless horizontal MacLayout
     \endtable
 
     When a button is clicked in the button box, the clicked() signal is emitted
diff --git a/src/gui/widgets/qmenu_mac.mm b/src/gui/widgets/qmenu_mac.mm
index 658a020..99c550f 100644
--- a/src/gui/widgets/qmenu_mac.mm
+++ b/src/gui/widgets/qmenu_mac.mm
@@ -2030,6 +2030,18 @@ void qt_mac_clear_menubar()
 */
 bool QMenuBar::macUpdateMenuBar()
 {
+#ifdef QT_MAC_USE_COCOA
+    QMacCocoaAutoReleasePool pool;
+    if (!qt_cocoaPostMessage(getMenuLoader(), @selector(qtUpdateMenubar)))
+        return QMenuBarPrivate::macUpdateMenuBarImmediatly();
+    return true;
+#else
+    return QMenuBarPrivate::macUpdateMenuBarImmediatly();
+#endif
+}
+
+bool QMenuBarPrivate::macUpdateMenuBarImmediatly()
+{
     bool ret = false;
     cancelAllMenuTracking();
     QWidget *w = findWindowThatShouldDisplayMenubar();
@@ -2095,8 +2107,9 @@ bool QMenuBar::macUpdateMenuBar()
         }
     }
 
-    if(!ret)
+    if (!ret) {
         qt_mac_clear_menubar();
+    }
     return ret;
 }
 
diff --git a/src/gui/widgets/qmenubar_p.h b/src/gui/widgets/qmenubar_p.h
index f2e5357..819aee4 100644
--- a/src/gui/widgets/qmenubar_p.h
+++ b/src/gui/widgets/qmenubar_p.h
@@ -196,6 +196,7 @@ public:
             return 0;
         }
     } *mac_menubar;
+    static bool macUpdateMenuBarImmediatly();
     bool macWidgetHasNativeMenubar(QWidget *widget);
     void macCreateMenuBar(QWidget *);
     void macDestroyMenuBar();