Enable visibility change events on all Symbian native windows

Previously, these events were enabled only on top-level widgets.  This
patch enables them also for native child widgets.

Task-number: QTBUG-8697
Reviewed-by: Jason Barron

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 6b91dff2f7..86b858dabd 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -433,6 +433,7 @@ void QWidgetPrivate::create_sys(WId window, bool /* initializeWindow */, bool de
         // Request mouse move events.
         drawableWindow->PointerFilter(EPointerFilterEnterExit
             | EPointerFilterMove | EPointerFilterDrag, 0);
+        drawableWindow->EnableVisibilityChangeEvents();
 
         if (q->isVisible() && q->testAttribute(Qt::WA_Mapped)) {
             activateSymbianWindow(control.data());