1 files changed, 6 insertions, 3 deletions
diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index e82f36e..d1ead97 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -691,9 +691,12 @@ void QWidgetBackingStore::markDirtyOnScreen(const QRegion &region, QWidget *widg
     }
 
     // Alien widgets.
-    if (!widget->internalWinId()) {
-        QWidget *nativeParent = widget->nativeParentWidget();
-        // Alien widgets with the top-level as the native parent (common case).
+    if (!widget->internalWinId() && !widget->isWindow()) { //### LITEHACK we need winid support!!!
+#ifdef Q_WS_LITE
+        QWidget *nativeParent = widget->window();        //### LITEHACK so far only toplevels are native
+#else
+        QWidget *nativeParent = widget->nativeParentWidget();        // Alien widgets with the top-level as the native parent (common case).
+#endif
         if (nativeParent == tlw) {
             if (!widget->testAttribute(Qt::WA_WState_InPaintEvent))
                 dirtyOnScreen += region.translated(topLevelOffset);