QScrollView unwanted repaint fix. This fixes the 'flashing' konqueror window on activation / deactivation by saving 1 unwanted repaint (when konqueror window has background). I tracked down to the problem to the internal QViewportWidget of the QScrollView class. When a window is activated the activation event is recursively propagated to all childs triggering the windowActivationChange() functions in the widget it passes by. What happens when the event gets to the Viewport? At this point the event has already been handled by windowActivationChange() of the parent widget (a QIconView for example) and has then been propagated to the Viewport that will handle it with the default QWidget::windowActivationChange implementation, maybe raising an unwanted update(); so here we stop the event. As an addition: if the parent reimplements the windowActivationChange() function, mainly to block the update, it won't be happy if the child will trigger the update. If the parent do not reimplement the function il will inherits the default implementation and there is no need for the viewport's one. Enrico Ros <eros.kde@email.it> --- src.orig/widgets/qscrollview.cpp 2004-03-29 10:17:04.000000000 +0000 +++ src/widgets/qscrollview.cpp 2004-03-30 16:40:07.599978320 +0000 @@ -1551,6 +1551,9 @@ case QEvent::LayoutHint: d->autoResizeHint(this); break; + case QEvent::WindowActivate: + case QEvent::WindowDeactivate: + return TRUE; default: break; }