Remove internal widgets from QApplication::topLevelWidgets()

We have some internal hidden widgets which should not come up in the
QApplication::topLevelWidgets() list. So the known ones are being
removed from the QWidgetPrivate::allWidgets set.

Task-number: QTBUG-739
Reviewed-by: Denis Dzyubenko
Reviewed-by: Bradley T. Hughes

1 files changed, 4 insertions, 0 deletions

diff --git a/src/gui/kernel/qclipboard_win.cpp b/src/gui/kernel/qclipboard_win.cpp
index 7f7ef0c..0157052 100644
--- a/src/gui/kernel/qclipboard_win.cpp
+++ b/src/gui/kernel/qclipboard_win.cpp
@@ -51,6 +51,7 @@
 #include "qmime.h"
 #include "qt_windows.h"
 #include "qdnd_p.h"
+#include <private/qwidget_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -140,6 +141,9 @@ public:
         clipBoardViewer = new QWidget();
         clipBoardViewer->createWinId();
         clipBoardViewer->setObjectName(QLatin1String("internal clipboard owner"));
+        // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+        if (QWidgetPrivate::allWidgets)
+            QWidgetPrivate::allWidgets->remove(clipBoardViewer);
     }
 
     ~QClipboardData()