17 files changed, 158 insertions, 101 deletions

diff --git a/src/plugins/bearer/connman/qconnmanservice_linux.cpp b/src/plugins/bearer/connman/qconnmanservice_linux.cpp
index 4efecc5464..380cf92a24 100644
--- a/src/plugins/bearer/connman/qconnmanservice_linux.cpp
+++ b/src/plugins/bearer/connman/qconnmanservice_linux.cpp
@@ -74,7 +74,6 @@ const QDBusArgument &operator>>(const QDBusArgument &argument, ConnmanMap &map)
     return argument;
 }
 
-static QDBusConnection dbusConnection = QDBusConnection::systemBus();
 QConnmanManagerInterface::QConnmanManagerInterface( QObject *parent)
         : QDBusAbstractInterface(QLatin1String(CONNMAN_SERVICE),
                                  QLatin1String(CONNMAN_MANAGER_PATH),
@@ -98,7 +97,7 @@ void QConnmanManagerInterface::connectNotify(const QMetaMethod &signal)
                                QLatin1String(CONNMAN_MANAGER_INTERFACE),
                                QLatin1String("PropertyChanged"),
                                this,SIGNAL(propertyChanged(QString,QDBusVariant)))) {
-            qWarning() << "PropertyCHanged not connected";
+            qWarning() << "PropertyChanged not connected";
         }
     }
 
@@ -118,7 +117,7 @@ void QConnmanManagerInterface::connectNotify(const QMetaMethod &signal)
         QConnmanDBusHelper *helper;
         helper = new QConnmanDBusHelper(this);
 
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                QLatin1String(CONNMAN_MANAGER_PATH),
                                QLatin1String(CONNMAN_MANAGER_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -379,7 +378,7 @@ void QConnmanProfileInterface::connectNotify(const QMetaMethod &signal)
 {
     static const QMetaMethod propertyChangedSignal = QMetaMethod::fromSignal(&QConnmanProfileInterface::propertyChanged);
     if (signal == propertyChangedSignal) {
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                this->path(),
                                QLatin1String(CONNMAN_PROFILE_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -449,7 +448,7 @@ void QConnmanServiceInterface::connectNotify(const QMetaMethod &signal)
 {
     static const QMetaMethod propertyChangedSignal = QMetaMethod::fromSignal(&QConnmanServiceInterface::propertyChanged);
     if (signal == propertyChangedSignal) {
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                this->path(),
                                QLatin1String(CONNMAN_SERVICE_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -460,7 +459,7 @@ void QConnmanServiceInterface::connectNotify(const QMetaMethod &signal)
         QConnmanDBusHelper *helper;
         helper = new QConnmanDBusHelper(this);
 
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                this->path(),
                                QLatin1String(CONNMAN_SERVICE_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -514,9 +513,6 @@ void QConnmanServiceInterface::remove()
     QDBusReply<QVariantMap> reply = this->call(QLatin1String("Remove"));
 }
 
-// void moveBefore(QDBusObjectPath &service);
-// void moveAfter(QDBusObjectPath &service);
-
 // properties
 QString QConnmanServiceInterface::getState()
 {
@@ -779,7 +775,7 @@ void QConnmanTechnologyInterface::connectNotify(const QMetaMethod &signal)
 {
     static const QMetaMethod propertyChangedSignal = QMetaMethod::fromSignal(&QConnmanTechnologyInterface::propertyChanged);
     if (signal == propertyChangedSignal) {
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                this->path(),
                                QLatin1String(CONNMAN_TECHNOLOGY_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -790,7 +786,7 @@ void QConnmanTechnologyInterface::connectNotify(const QMetaMethod &signal)
         QConnmanDBusHelper *helper;
         helper = new QConnmanDBusHelper(this);
 
-        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
+        QDBusConnection::systemBus().connect(QLatin1String(CONNMAN_SERVICE),
                                this->path(),
                                QLatin1String(CONNMAN_TECHNOLOGY_INTERFACE),
                                QLatin1String("PropertyChanged"),
@@ -861,23 +857,11 @@ QConnmanAgentInterface::~QConnmanAgentInterface()
 void QConnmanAgentInterface::connectNotify(const QMetaMethod &signal)
 {
     Q_UNUSED(signal);
-//    static const QMetaMethod propertyChangedSignal = QMetaMethod::fromSignal(&QConnmanAgentInterface::propertyChanged);
-//    if (signal == propertyChangedSignal) {
-//        dbusConnection.connect(QLatin1String(CONNMAN_SERVICE),
-//                               this->path(),
-//                               QLatin1String(CONNMAN_NETWORK_INTERFACE),
-//                               QLatin1String("PropertyChanged"),
-//                               this,SIGNAL(propertyChanged(QString,QVariant&)));
-//    }
 }
 
 void QConnmanAgentInterface::disconnectNotify(const QMetaMethod &signal)
 {
     Q_UNUSED(signal);
-//    static const QMetaMethod propertyChangedSignal = QMetaMethod::fromSignal(&QConnmanAgentInterface::propertyChanged);
-//    if (signal == propertyChangedSignal) {
-
-//    }
 }
 
 
@@ -889,10 +873,6 @@ void QConnmanAgentInterface::reportError(QDBusObjectPath &/*path*/, const QStrin
 {
 }
 
-//dict QConnmanAgentInterface::requestInput(QDBusObjectPath &path, dict fields)
-//{
-//}
-
 void QConnmanAgentInterface::cancel()
 {
 }
diff --git a/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm b/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
index f7c945c50d..55a23fda76 100644
--- a/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
+++ b/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
@@ -151,8 +151,7 @@
             [kids addObject: element];
             [element release];
         }
-        // ### maybe we should use NSAccessibilityUnignoredChildren(kids); this needs more profiling
-        return kids;
+        return NSAccessibilityUnignoredChildren(kids);
 
     } else if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
         // Just check if the app thinks we're focused.
@@ -272,8 +271,7 @@
     // No child found, meaning we hit this element.
     if (!childInterface) {
 //        qDebug() << "Hit test returns: " << id << iface;
-        return self;
-        //return NSAccessibilityUnignoredAncestor(self);
+        return NSAccessibilityUnignoredAncestor(self);
     }
 
     QAccessible::Id childId = QAccessible::uniqueId(childInterface);
diff --git a/src/plugins/platforms/cocoa/qcocoadrag.mm b/src/plugins/platforms/cocoa/qcocoadrag.mm
index 7dad4271b5..a37552d844 100644
--- a/src/plugins/platforms/cocoa/qcocoadrag.mm
+++ b/src/plugins/platforms/cocoa/qcocoadrag.mm
@@ -123,7 +123,7 @@ Qt::DropAction QCocoaDrag::drag(QDrag *o)
     if (pm.isNull())
         pm = defaultPixmap();
 
-    NSImage *nsimage = static_cast<NSImage *>(qt_mac_create_nsimage(pm));
+    NSImage *nsimage = qt_mac_create_nsimage(pm);
 
     QMacPasteboard dragBoard((CFStringRef) NSDragPboard, QMacPasteboardMime::MIME_DND);
     m_drag->mimeData()->setData(QLatin1String("application/x-qt-mime-type-name"), QByteArray("dummy"));
@@ -145,6 +145,8 @@ Qt::DropAction QCocoaDrag::drag(QDrag *o)
         source:m_lastView
         slideBack:YES];
 
+    [nsimage release];
+
     m_drag = 0;
     return m_executed_drop_action;
 }
diff --git a/src/plugins/platforms/cocoa/qcocoamenu.h b/src/plugins/platforms/cocoa/qcocoamenu.h
index 9100b9b15f..7224ee2ff8 100644
--- a/src/plugins/platforms/cocoa/qcocoamenu.h
+++ b/src/plugins/platforms/cocoa/qcocoamenu.h
@@ -49,6 +49,8 @@
 
 QT_BEGIN_NAMESPACE
 
+class QCocoaMenuBar;
+
 class QCocoaMenu : public QPlatformMenu
 {
 public:
@@ -87,6 +89,8 @@ public:
 
     QList<QCocoaMenuItem *> items() const;
     QList<QCocoaMenuItem *> merged() const;
+    void setMenuBar(QCocoaMenuBar *menuBar);
+    QCocoaMenuBar *menuBar() const;
 private:
     QCocoaMenuItem *itemOrNull(int index) const;
     void insertNative(QCocoaMenuItem *item, QCocoaMenuItem *beforeItem);
@@ -97,6 +101,7 @@ private:
     NSObject *m_delegate;
     bool m_enabled;
     quintptr m_tag;
+    QCocoaMenuBar *m_menuBar;
 };
 
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/cocoa/qcocoamenu.mm b/src/plugins/platforms/cocoa/qcocoamenu.mm
index 08ae6c43bd..f6378d126f 100644
--- a/src/plugins/platforms/cocoa/qcocoamenu.mm
+++ b/src/plugins/platforms/cocoa/qcocoamenu.mm
@@ -217,7 +217,8 @@ QT_BEGIN_NAMESPACE
 
 QCocoaMenu::QCocoaMenu() :
     m_enabled(true),
-    m_tag(0)
+    m_tag(0),
+    m_menuBar(0)
 {
     m_delegate = [[QCocoaMenuDelegate alloc] initWithMenu:this];
     m_nativeItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
@@ -536,4 +537,14 @@ void QCocoaMenu::syncModalState(bool modal)
     }
 }
 
+void QCocoaMenu::setMenuBar(QCocoaMenuBar *menuBar)
+{
+    m_menuBar = menuBar;
+}
+
+QCocoaMenuBar *QCocoaMenu::menuBar() const
+{
+    return m_menuBar;
+}
+
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/cocoa/qcocoamenubar.h b/src/plugins/platforms/cocoa/qcocoamenubar.h
index 8086676cc5..7a1bda74a4 100644
--- a/src/plugins/platforms/cocoa/qcocoamenubar.h
+++ b/src/plugins/platforms/cocoa/qcocoamenubar.h
@@ -75,6 +75,8 @@ private:
     static QCocoaMenuBar *findGlobalMenubar();
 
     bool shouldDisable(QCocoaWindow *active) const;
+    void insertNativeMenu(QCocoaMenu *menu, QCocoaMenu *beforeMenu);
+    void removeNativeMenu(QCocoaMenu *menu);
 
     QList<QCocoaMenu*> m_menus;
     NSMenu *m_nativeMenu;
diff --git a/src/plugins/platforms/cocoa/qcocoamenubar.mm b/src/plugins/platforms/cocoa/qcocoamenubar.mm
index 315f192ff8..52bfdfa385 100644
--- a/src/plugins/platforms/cocoa/qcocoamenubar.mm
+++ b/src/plugins/platforms/cocoa/qcocoamenubar.mm
@@ -83,9 +83,24 @@ QCocoaMenuBar::~QCocoaMenuBar()
     }
 }
 
-void QCocoaMenuBar::insertMenu(QPlatformMenu *platformMenu, QPlatformMenu *before)
+void QCocoaMenuBar::insertNativeMenu(QCocoaMenu *menu, QCocoaMenu *beforeMenu)
 {
     QCocoaAutoReleasePool pool;
+
+    if (beforeMenu) {
+        NSUInteger nativeIndex = [m_nativeMenu indexOfItem:beforeMenu->nsMenuItem()];
+        [m_nativeMenu insertItem: menu->nsMenuItem() atIndex: nativeIndex];
+    } else {
+        [m_nativeMenu addItem: menu->nsMenuItem()];
+    }
+
+    menu->setMenuBar(this);
+    syncMenu(static_cast<QPlatformMenu *>(menu));
+    [m_nativeMenu setSubmenu: menu->nsMenu() forItem: menu->nsMenuItem()];
+}
+
+void QCocoaMenuBar::insertMenu(QPlatformMenu *platformMenu, QPlatformMenu *before)
+{
     QCocoaMenu *menu = static_cast<QCocoaMenu *>(platformMenu);
     QCocoaMenu *beforeMenu = static_cast<QCocoaMenu *>(before);
 #ifdef QT_COCOA_ENABLE_MENU_DEBUG
@@ -96,39 +111,36 @@ void QCocoaMenuBar::insertMenu(QPlatformMenu *platformMenu, QPlatformMenu *befor
         qWarning() << Q_FUNC_INFO << "This menu already belongs to the menubar, remove it first";
         return;
     }
-    if (beforeMenu) {
-        if (!m_menus.contains(beforeMenu)) {
-            qWarning() << Q_FUNC_INFO << "The before menu does not belong to the menubar";
-            return;
-        }
-        m_menus.insert(m_menus.indexOf(beforeMenu), menu);
-        NSUInteger nativeIndex = [m_nativeMenu indexOfItem:beforeMenu->nsMenuItem()];
-        [m_nativeMenu insertItem: menu->nsMenuItem() atIndex: nativeIndex];
-    } else {
-        m_menus.append(menu);
-        [m_nativeMenu addItem: menu->nsMenuItem()];
+
+    if (beforeMenu && !m_menus.contains(beforeMenu)) {
+        qWarning() << Q_FUNC_INFO << "The before menu does not belong to the menubar";
+        return;
     }
 
-    platformMenu->setParent(this);
-    syncMenu(platformMenu);
-    [m_nativeMenu setSubmenu: menu->nsMenu() forItem: menu->nsMenuItem()];
+    m_menus.insert(beforeMenu ? m_menus.indexOf(beforeMenu) : m_menus.size(), menu);
+    if (!menu->menuBar())
+        insertNativeMenu(menu, beforeMenu);
 }
 
-void QCocoaMenuBar::removeMenu(QPlatformMenu *platformMenu)
+void QCocoaMenuBar::removeNativeMenu(QCocoaMenu *menu)
 {
     QCocoaAutoReleasePool pool;
 
+    if (menu->menuBar() == this)
+        menu->setMenuBar(0);
+    NSUInteger realIndex = [m_nativeMenu indexOfItem:menu->nsMenuItem()];
+    [m_nativeMenu removeItemAtIndex: realIndex];
+}
+
+void QCocoaMenuBar::removeMenu(QPlatformMenu *platformMenu)
+{
     QCocoaMenu *menu = static_cast<QCocoaMenu *>(platformMenu);
     if (!m_menus.contains(menu)) {
         qWarning() << Q_FUNC_INFO << "Trying to remove a menu that does not belong to the menubar";
         return;
     }
     m_menus.removeOne(menu);
-
-    if (platformMenu->parent() == this)
-        platformMenu->setParent(0);
-    NSUInteger realIndex = [m_nativeMenu indexOfItem:menu->nsMenuItem()];
-    [m_nativeMenu removeItemAtIndex: realIndex];
+    removeNativeMenu(menu);
 }
 
 void QCocoaMenuBar::syncMenu(QPlatformMenu *menu)
@@ -207,6 +219,20 @@ void QCocoaMenuBar::updateMenuBarImmediately()
         m->syncModalState(disableForModal);
     }
 
+    // reparent shared menu items if necessary.
+    // We browse the list in reverse order to be sure that the next items are redrawn before the current ones,
+    // in this way we are sure that "beforeMenu" (see below) is part of the native menu before "m" is redraw
+    for (int i = mb->m_menus.size() - 1; i >= 0; i--) {
+        QCocoaMenu *m = mb->m_menus.at(i);
+        QCocoaMenuBar *menuBar = m->menuBar();
+        if (menuBar != mb) {
+            QCocoaMenu *beforeMenu  = i < (mb->m_menus.size() - 1) ? mb->m_menus.at(i + 1) : 0;
+            if (menuBar)
+                menuBar->removeNativeMenu(m);
+            mb->insertNativeMenu(m, beforeMenu);
+        }
+    }
+
     QCocoaMenuLoader *loader = getMenuLoader();
     [loader ensureAppMenuInMenu:mb->nsMenu()];
 
diff --git a/src/plugins/platforms/cocoa/qcocoatheme.mm b/src/plugins/platforms/cocoa/qcocoatheme.mm
index 31bbd63e36..5a5b2bc51f 100644
--- a/src/plugins/platforms/cocoa/qcocoatheme.mm
+++ b/src/plugins/platforms/cocoa/qcocoatheme.mm
@@ -283,7 +283,7 @@ QVariant QCocoaTheme::themeHint(ThemeHint hint) const
         sizes << 16 << 32 << 64 << 128;
         return QVariant::fromValue(sizes);
     }
-    case QPlatformTheme::PasswordMaskDelay:
+    case QPlatformTheme::PasswordMaskCharacter:
         return QVariant(QChar(kBulletUnicode));
     default:
         break;
diff --git a/src/plugins/platforms/cocoa/qnsviewaccessibility.mm b/src/plugins/platforms/cocoa/qnsviewaccessibility.mm
index 6ebb1f6ba8..331a66417d 100644
--- a/src/plugins/platforms/cocoa/qnsviewaccessibility.mm
+++ b/src/plugins/platforms/cocoa/qnsviewaccessibility.mm
@@ -88,7 +88,7 @@
             [element release];
         }
 
-        return kids;
+        return NSAccessibilityUnignoredChildren(kids);
     } else {
         return [super accessibilityAttributeValue:attribute];
     }
diff --git a/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp b/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp
index 91a97ff977..c334f46c2c 100644
--- a/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp
+++ b/src/plugins/platforms/eglfs/qeglfshooks_stub.cpp
@@ -99,6 +99,7 @@ QSizeF QEglFSHooks::physicalScreenSize() const
         struct fb_var_screeninfo vinfo;
         int w = -1;
         int h = -1;
+        QSize screenResolution;
 
         if (framebuffer != -1) {
             if (ioctl(framebuffer, FBIOGET_VSCREENINFO, &vinfo) == -1) {
@@ -106,12 +107,15 @@ QSizeF QEglFSHooks::physicalScreenSize() const
             } else {
                 w = vinfo.width;
                 h = vinfo.height;
+                screenResolution = QSize(vinfo.xres, vinfo.yres);
             }
+        } else {
+            screenResolution = screenSize();
         }
 
         const int defaultPhysicalDpi = 100;
-        size.setWidth(w <= 0 ? vinfo.xres * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w));
-        size.setHeight(h <= 0 ? vinfo.yres * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h));
+        size.setWidth(w <= 0 ? screenResolution.width() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w));
+        size.setHeight(h <= 0 ? screenResolution.height() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h));
 
         if (w <= 0 || h <= 0) {
             qWarning("EGLFS: Unable to query physical screen size, defaulting to %d dpi.\n"
diff --git a/src/plugins/platforms/eglfs/qeglfswindow.cpp b/src/plugins/platforms/eglfs/qeglfswindow.cpp
index cd92a07f00..98c54e0ee0 100644
--- a/src/plugins/platforms/eglfs/qeglfswindow.cpp
+++ b/src/plugins/platforms/eglfs/qeglfswindow.cpp
@@ -68,11 +68,11 @@ QEglFSWindow::~QEglFSWindow()
 
 void QEglFSWindow::create()
 {
-    setWindowState(Qt::WindowFullScreen);
-
     if (m_window)
         return;
 
+    setWindowState(Qt::WindowFullScreen);
+
     if (window()->type() == Qt::Desktop) {
         QRect rect(QPoint(), QEglFSHooks::hooks()->screenSize());
         QPlatformWindow::setGeometry(rect);
diff --git a/src/plugins/platforms/qnx/qqnxwindow.cpp b/src/plugins/platforms/qnx/qqnxwindow.cpp
index f7fc5de8d7..cd79ae73fd 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxwindow.cpp
@@ -77,7 +77,7 @@ QQnxWindow::QQnxWindow(QWindow *window, screen_context_t context)
 #endif
       m_screen(0),
       m_parentWindow(0),
-      m_visible(true),
+      m_visible(false),
       m_windowState(Qt::WindowNoState),
       m_requestedBufferSize(window->geometry().size())
 {
@@ -153,7 +153,6 @@ QQnxWindow::QQnxWindow(QWindow *window, screen_context_t context)
     if (window->parent() && window->parent()->handle())
         setParent(window->parent()->handle());
     setGeometryHelper(window->geometry());
-    setVisible(window->isVisible());
 }
 
 QQnxWindow::~QQnxWindow()
@@ -272,6 +271,9 @@ void QQnxWindow::setVisible(bool visible)
 {
     qWindowDebug() << Q_FUNC_INFO << "window =" << window() << "visible =" << visible;
 
+    if (m_visible == visible)
+        return;
+
     m_visible = visible;
 
     QQnxWindow *root = this;
@@ -282,13 +284,13 @@ void QQnxWindow::setVisible(bool visible)
 
     window()->requestActivate();
 
-    if (window()->isTopLevel()) {
-        QWindowSystemInterface::handleExposeEvent(window(), window()->geometry());
+    QWindowSystemInterface::handleExposeEvent(window(), window()->geometry());
 
-        if (!visible) {
-            // Flush the context, otherwise it won't disappear immediately
-            screen_flush_context(m_screenContext, 0);
-        }
+    if (visible) {
+        applyWindowState();
+    } else {
+        // Flush the context, otherwise it won't disappear immediately
+        screen_flush_context(m_screenContext, 0);
     }
 }
 
@@ -638,35 +640,10 @@ void QQnxWindow::setWindowState(Qt::WindowState state)
     if (m_windowState == state)
         return;
 
-    switch (state) {
-
-    // WindowActive is not an accepted parameter according to the docs
-    case Qt::WindowActive:
-        return;
-
-    case Qt::WindowMinimized:
-        minimize();
-
-        if (m_unmaximizedGeometry.isValid())
-            setGeometry(m_unmaximizedGeometry);
-        else
-            setGeometry(m_screen->geometry());
-
-        break;
-
-    case Qt::WindowMaximized:
-    case Qt::WindowFullScreen:
-        m_unmaximizedGeometry = geometry();
-        setGeometry(state == Qt::WindowMaximized ? m_screen->availableGeometry() : m_screen->geometry());
-        break;
-
-    case Qt::WindowNoState:
-        if (m_unmaximizedGeometry.isValid())
-            setGeometry(m_unmaximizedGeometry);
-        break;
-    }
-
     m_windowState = state;
+
+    if (m_visible)
+        applyWindowState();
 }
 
 void QQnxWindow::gainedFocus()
@@ -747,6 +724,37 @@ void QQnxWindow::updateZorder(int &topZorder)
         childWindow->updateZorder(topZorder);
 }
 
+void QQnxWindow::applyWindowState()
+{
+    switch (m_windowState) {
+
+    // WindowActive is not an accepted parameter according to the docs
+    case Qt::WindowActive:
+        return;
+
+    case Qt::WindowMinimized:
+        minimize();
+
+        if (m_unmaximizedGeometry.isValid())
+            setGeometry(m_unmaximizedGeometry);
+        else
+            setGeometry(m_screen->geometry());
+
+        break;
+
+    case Qt::WindowMaximized:
+    case Qt::WindowFullScreen:
+        m_unmaximizedGeometry = geometry();
+        setGeometry(m_windowState == Qt::WindowMaximized ? m_screen->availableGeometry() : m_screen->geometry());
+        break;
+
+    case Qt::WindowNoState:
+        if (m_unmaximizedGeometry.isValid())
+            setGeometry(m_unmaximizedGeometry);
+        break;
+    }
+}
+
 void QQnxWindow::blitHelper(QQnxBuffer &source, QQnxBuffer &target, const QPoint &sourceOffset,
                             const QPoint &targetOffset, const QRegion &region, bool flush)
 {
diff --git a/src/plugins/platforms/qnx/qqnxwindow.h b/src/plugins/platforms/qnx/qqnxwindow.h
index 4a327fd54b..63d5dc0979 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.h
+++ b/src/plugins/platforms/qnx/qqnxwindow.h
@@ -124,6 +124,7 @@ private:
     void setOffset(const QPoint &setOffset);
     void updateVisibility(bool parentVisible);
     void updateZorder(int &topZorder);
+    void applyWindowState();
 
     void fetchBuffers();
 
diff --git a/src/plugins/platforms/windows/qplatformfunctions_wince.h b/src/plugins/platforms/windows/qplatformfunctions_wince.h
index 3190e39ec5..30fc66563e 100644
--- a/src/plugins/platforms/windows/qplatformfunctions_wince.h
+++ b/src/plugins/platforms/windows/qplatformfunctions_wince.h
@@ -74,6 +74,7 @@
 
 #ifndef CWP_SKIPINVISIBLE
 #define CWP_SKIPINVISIBLE   0x0001
+#define CWP_SKIPTRANSPARENT 0x0004
 #define findPlatformWindowAt(a, b, c) findPlatformWindowAt(a, b)
 #endif
 
diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index 814892b43a..fc2ba454df 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -433,6 +433,9 @@ QPlatformWindow *QWindowsIntegration::createPlatformWindow(QWindow *window) cons
         return 0;
     if (requested.flags != obtained.flags)
         window->setFlags(obtained.flags);
+    // Trigger geometry change signals of QWindow.
+    if ((obtained.flags & Qt::Desktop) != Qt::Desktop && requested.geometry != obtained.geometry)
+        QWindowSystemInterface::handleGeometryChange(window, obtained.geometry);
     return new QWindowsWindow(window, obtained);
 }
 
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
index 5c096b7eca..c6cfa4dbbc 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
@@ -232,8 +232,10 @@ bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd,
     }
 
     const QPoint globalPosition = QWindowsGeometryHint::mapToGlobal(hwnd, winEventPosition);
+    // In this context, neither an invisible nor a transparent window (transparent regarding mouse
+    // events, "click-through") can be considered as the window under mouse.
     QWindow *currentWindowUnderMouse = platformWindow->hasMouseCapture() ?
-        QWindowsScreen::windowAt(globalPosition) : window;
+        QWindowsScreen::windowAt(globalPosition, CWP_SKIPINVISIBLE | CWP_SKIPTRANSPARENT) : window;
 
     compressMouseMove(&msg);
     // Qt expects the platform plugin to capture the mouse on
diff --git a/src/plugins/platforms/xcb/qxcbxsettings.cpp b/src/plugins/platforms/xcb/qxcbxsettings.cpp
index 7ffd3e105f..c106bd00f8 100644
--- a/src/plugins/platforms/xcb/qxcbxsettings.cpp
+++ b/src/plugins/platforms/xcb/qxcbxsettings.cpp
@@ -214,23 +214,37 @@ QXcbXSettings::QXcbXSettings(QXcbScreen *screen)
     QByteArray settings_atom_for_screen("_XSETTINGS_S");
     settings_atom_for_screen.append(QByteArray::number(screen->screenNumber()));
     xcb_intern_atom_cookie_t atom_cookie = xcb_intern_atom(screen->xcb_connection(),
-                                                           false,
+                                                           true,
                                                            settings_atom_for_screen.length(),
                                                            settings_atom_for_screen.constData());
-    xcb_intern_atom_reply_t *atom_reply = xcb_intern_atom_reply(screen->xcb_connection(),atom_cookie,NULL);
+    xcb_generic_error_t *error = 0;
+    xcb_intern_atom_reply_t *atom_reply = xcb_intern_atom_reply(screen->xcb_connection(),atom_cookie,&error);
+    if (error) {
+        qWarning() << Q_FUNC_INFO << "Failed to find XSETTINGS_S atom";
+        return;
+    }
     xcb_atom_t selection_owner_atom = atom_reply->atom;
     free(atom_reply);
 
     xcb_get_selection_owner_cookie_t selection_cookie =
             xcb_get_selection_owner(screen->xcb_connection(), selection_owner_atom);
+
     xcb_get_selection_owner_reply_t *selection_result =
-            xcb_get_selection_owner_reply(screen->xcb_connection(), selection_cookie, NULL);
+            xcb_get_selection_owner_reply(screen->xcb_connection(), selection_cookie, &error);
+    if (error) {
+        qWarning() << Q_FUNC_INFO << "Failed to get selection owner for XSETTINGS_S atom";
+        return;
+    }
 
     d_ptr->x_settings_window = selection_result->owner;
+    if (!d_ptr->x_settings_window) {
+        return;
+    }
     free(selection_result);
 
+    const uint32_t event = XCB_CW_EVENT_MASK;
     const uint32_t event_mask[] = { XCB_EVENT_MASK_STRUCTURE_NOTIFY|XCB_EVENT_MASK_PROPERTY_CHANGE };
-    xcb_change_window_attributes(screen->xcb_connection(),d_ptr->x_settings_window,XCB_CW_EVENT_MASK,event_mask);
+    xcb_change_window_attributes(screen->xcb_connection(),d_ptr->x_settings_window,event,event_mask);
 
     d_ptr->populateSettings(d_ptr->getSettings());
 }