diff -Naur qt-x11-opensource-src-4.5.0-beta1-orig/src/gui/widgets/qmainwindow.cpp qt-x11-opensource-src-4.5.0-beta1/src/gui/widgets/qmainwindow.cpp

--- qt-x11-opensource-src-4.5.0-beta1-orig/src/gui/widgets/qmainwindow.cpp	2008-12-17 20:16:41.000000000 +0300

+++ qt-x11-opensource-src-4.5.0-beta1/src/gui/widgets/qmainwindow.cpp	2009-01-03 17:54:32.000000000 +0300

@@ -300,6 +300,9 @@

     : QWidget(*(new QMainWindowPrivate()), parent, flags | Qt::Window)

 {

     d_func()->init();

+#ifndef QT_NO_MENUBAR

+    createMenuBarAction();

+#endif // QT_NO_MENUBAR

 }

 #ifdef QT3_SUPPORT

@@ -313,6 +316,9 @@

 {

     setObjectName(QString::fromAscii(name));

     d_func()->init();

+#ifndef QT_NO_MENUBAR

+    createMenuBarAction();

+#endif // QT_NO_MENUBAR

 }

 #endif

@@ -1567,4 +1573,30 @@

 QT_END_NAMESPACE

+#ifndef QT_NO_MENUBAR

+void QMainWindow::createMenuBarAction()

+{

+    QList<QKeySequence> vShortcuts;

+    vShortcuts.append(QKeySequence(Qt::SHIFT | Qt::Key_F10));

+    vShortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_Super_L));

+    vShortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_Super_R));

+    

+    QAction *vpAction = new QAction(this);

+    vpAction->setShortcuts(vShortcuts);

+    connect(vpAction, SIGNAL(triggered()), this, SLOT(activateMenuBar()));

+    addAction(vpAction);

+}

+

+void QMainWindow::activateMenuBar()

+{

+    QMenuBar *vpMenuBar = menuBar();

+    if(!vpMenuBar) return;

+    if(vpMenuBar->actions().count()<=0) return;

+    

+    QAction *vpAction = vpMenuBar->actions().at(0);

+    if(!vpAction) return;

+    vpMenuBar->setActiveAction(vpAction);

+}

+#endif // QT_NO_MENUBAR

+

 #endif // QT_NO_MAINWINDOW

diff -Naur qt-x11-opensource-src-4.5.0-beta1-orig/src/gui/widgets/qmainwindow.h qt-x11-opensource-src-4.5.0-beta1/src/gui/widgets/qmainwindow.h

--- qt-x11-opensource-src-4.5.0-beta1-orig/src/gui/widgets/qmainwindow.h	2008-12-17 20:16:41.000000000 +0300

+++ qt-x11-opensource-src-4.5.0-beta1/src/gui/widgets/qmainwindow.h	2009-01-03 17:54:32.000000000 +0300

@@ -196,6 +196,14 @@

 #endif

     bool event(QEvent *event);

+#ifndef QT_NO_MENUBAR

+protected:

+    void createMenuBarAction();

+

+protected Q_SLOTS:

+    void activateMenuBar();

+#endif

+

 private:

     Q_DECLARE_PRIVATE(QMainWindow)

     Q_DISABLE_COPY(QMainWindow)