diff -r 68d3b337861b -r 25a739ee40f4 src/gui/kernel/qwidget_s60.cpp
--- a/src/gui/kernel/qwidget_s60.cpp	Wed Apr 21 09:15:16 2010 +0300
+++ b/src/gui/kernel/qwidget_s60.cpp	Wed Apr 21 11:15:19 2010 +0300
@@ -387,16 +387,7 @@
                 | EPointerFilterMove | EPointerFilterDrag, 0);
             drawableWindow->EnableVisibilityChangeEvents();
 
-            if (!isOpaque) {
-                RWindow *const window = static_cast<RWindow *>(drawableWindow);
-#ifdef Q_SYMBIAN_SEMITRANSPARENT_BG_SURFACE
-                window->SetSurfaceTransparency(true);
-#else
-                const TDisplayMode displayMode = static_cast<TDisplayMode>(window->SetRequiredDisplayMode(EColor16MA));
-                if (window->SetTransparencyAlphaChannel() == KErrNone)
-                    window->SetBackgroundColor(TRgb(255, 255, 255, 0));
-#endif
-            }
+            s60UpdateIsOpaque();
         }
 
         q->setAttribute(Qt::WA_WState_Created);
@@ -488,6 +479,47 @@
 
          QSymbianControl *id = static_cast<QSymbianControl *>(q->internalWinId());
 
+#ifdef Q_WS_S60
+        // Lazily initialize the S60 screen furniture when the first window is shown.
+        if (!QApplication::testAttribute(Qt::AA_S60DontConstructApplicationPanes)
+                && !S60->buttonGroupContainer() && !S60->statusPane()) {
+
+            bool isFullscreen = q->windowState() & Qt::WindowFullScreen;
+            bool cbaRequested = q->windowFlags() & Qt::WindowSoftkeysVisibleHint;
+
+            // If the window is fullscreen and has not explicitly requested that the CBA be visible
+            // we delay the creation even more.
+            if ((!isFullscreen || cbaRequested) && !q->testAttribute(Qt::WA_DontShowOnScreen)) {
+
+                // Create the status pane and CBA here
+                CEikAppUi *ui = static_cast<CEikAppUi *>(S60->appUi());
+                MEikAppUiFactory *factory = CEikonEnv::Static()->AppUiFactory();
+                TRAP_IGNORE(factory->ReadAppInfoResourceL(0, ui));
+                if (S60->buttonGroupContainer())
+                    S60->buttonGroupContainer()->SetCommandSetL(R_AVKON_SOFTKEYS_EMPTY_WITH_IDS);
+
+                if (S60->statusPane()) {
+                    // Use QDesktopWidget as the status pane observer to proxy for the AppUi.
+                    // Can't use AppUi directly because it privately inherits from MEikStatusPaneObserver.
+                    QSymbianControl *desktopControl = static_cast<QSymbianControl *>(QApplication::desktop()->winId());
+                    S60->statusPane()->SetObserver(desktopControl);
+
+                    // Hide the status pane if fullscreen OR
+                    // Fill client area if maximized OR
+                    // Put window below status pane unless the window has an explicit position.
+                    if (isFullscreen) {
+                        S60->statusPane()->MakeVisible(false);
+                    } else if (q->windowState() & Qt::WindowMaximized) {
+                        TRect r = static_cast<CEikAppUi*>(S60->appUi())->ClientRect();
+                        id->SetExtent(r.iTl, r.Size());
+                    } else if (!q->testAttribute(Qt::WA_Moved)) {
+                        id->SetPosition(static_cast<CEikAppUi*>(S60->appUi())->ClientRect().iTl);
+                    }
+                }
+            }
+        }
+#endif
+
         id->MakeVisible(true);
 
         if(q->isWindow())
@@ -1063,6 +1095,9 @@
         return;
 
     if (isWindow()) {
+        createWinId();
+        Q_ASSERT(testAttribute(Qt::WA_WState_Created));
+
         const bool wasResized = testAttribute(Qt::WA_Resized);
         const bool wasMoved = testAttribute(Qt::WA_Moved);
 
@@ -1100,23 +1135,32 @@
         }
 #endif // Q_WS_S60
 
-        createWinId();
-        Q_ASSERT(testAttribute(Qt::WA_WState_Created));
         // Ensure the initial size is valid, since we store it as normalGeometry below.
         if (!wasResized && !isVisible())
             adjustSize();
 
         QTLWExtra *top = d->topData();
-        const QRect normalGeometry = (top->normalGeometry.width() < 0) ? geometry() : top->normalGeometry;
-
+        QRect normalGeometry = (top->normalGeometry.width() < 0) ? geometry() : top->normalGeometry;
 
         const bool cbaVisibilityHint = windowFlags() & Qt::WindowSoftkeysVisibleHint;
-        if (newstate & Qt::WindowFullScreen && !cbaVisibilityHint)
-            setGeometry(qApp->desktop()->screenGeometry(this));
-        else if (newstate & Qt::WindowMaximized || ((newstate & Qt::WindowFullScreen) && cbaVisibilityHint))
-            setGeometry(qApp->desktop()->availableGeometry(this));
-        else
+        if (newstate & Qt::WindowFullScreen && !cbaVisibilityHint) {
+            window->SetExtentToWholeScreen();
+        } else if (newstate & Qt::WindowMaximized || ((newstate & Qt::WindowFullScreen) && cbaVisibilityHint)) {
+            TRect maxExtent = qt_QRect2TRect(qApp->desktop()->availableGeometry(this));
+            window->SetExtent(maxExtent.iTl, maxExtent.Size());
+        } else {
+#ifdef Q_WS_S60
+            // With delayed creation of S60 app panes, the normalGeometry calculated above is not
+            // accurate because it did not consider the status pane. This means that when returning
+            // normal mode after showing the status pane, the geometry would overlap so we should
+            // move it if it never had an explicit position.
+            if (!wasMoved && statusPane && visible) {
+                TPoint tl = static_cast<CEikAppUi*>(S60->appUi())->ClientRect().iTl;
+                normalGeometry.setTopLeft(QPoint(tl.iX, tl.iY));
+            }
+#endif
             setGeometry(normalGeometry);
+        }
 
         //restore normal geometry
         top->normalGeometry = normalGeometry;