8 files changed, 87 insertions, 3 deletions
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 d8bbcd4..3b92ce2 100644
--- a/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
+++ b/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
@@ -178,8 +178,26 @@ QT_END_NAMESPACE
     [NSApp terminate:sender];
 }
 
+- (void)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];
+    QCocoaPostCallArgs *args = reinterpret_cast<QCocoaPostCallArgs *>(lower | (upper << 32));
+    if (args != 0) {
+        [args->target performSelector:args->selector];
+        delete args;
+    }
+}
+
 - (void)sendEvent:(NSEvent *)event
 {
+    if ([event type] == NSApplicationDefined) {
+        if ([event subtype] == QtCocoaEventSubTypePostMessage)
+            [self sendPostedMessage:event];
+        return;
+    }
     QWidget *widget = [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] qt_qwidgetForWindow:self];
 
     // Cocoa can hold onto the window after we've disavowed its knowledge. So,
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 377e5a0..74514a0 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -1281,6 +1281,30 @@ void qt_cocoaChangeOverrideCursor(const QCursor &cursor)
 }
 #endif
 
+bool qt_cocoaPostMessage(id target, SEL selector)
+{
+    if (!target)
+        return false;
+    NSWindow *nswin = [NSApp mainWindow];
+    if (!nswin) {
+        nswin = [NSApp keyWindow];
+        if (!nswin)
+            return false;
+    }
+
+    // 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:
+    QCocoaPostCallArgs *args = new QCocoaPostCallArgs(target, selector);
+    quint32 lower = quintptr(args);
+    quint32 upper = quintptr(args) >> 32;
+    NSEvent *e = [NSEvent otherEventWithType:NSApplicationDefined
+        location:NSZeroPoint modifierFlags:0 timestamp:0
+        windowNumber:[nswin windowNumber]
+        context:nil subtype:QtCocoaEventSubTypePostMessage data1:lower data2:upper];
+    [NSApp postEvent:e atStart:NO];
+    return true;
+}
+
 @implementation DebugNSApplication {
 }
 - (void)sendEvent:(NSEvent *)event
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac_p.h b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
index ace8255..0b961b1 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);
@@ -182,6 +188,22 @@ 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]; }
 
+class QCocoaPostCallArgs {
+    public:
+    id target;
+    SEL selector;
+    QCocoaPostCallArgs(id target, SEL selector) : target(target), selector(selector)
+    {
+        [target retain];
+    }
+
+    ~QCocoaPostCallArgs()
+    {
+        [target release];
+    }
+};
+bool qt_cocoaPostMessage(id target, SEL selector);
+
 @interface DebugNSApplication : NSApplication {}
 @end
 
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();