1 files changed, 2 insertions, 1 deletions
diff --git a/src/gui/painting/qgraphicssystem_p.h b/src/gui/painting/qgraphicssystem_p.h
index 0f99a31..275f9eb 100644
--- a/src/gui/painting/qgraphicssystem_p.h
+++ b/src/gui/painting/qgraphicssystem_p.h
@@ -63,6 +63,7 @@ QT_BEGIN_NAMESPACE
 
 class QPixmapFilter;
 class QBlittable;
+class QGraphicsSystemEx;
 
 class Q_GUI_EXPORT QGraphicsSystem
 {
@@ -77,7 +78,7 @@ public:
     //    to have a graphics system.
     static QPixmapData *createDefaultPixmapData(QPixmapData::PixelType type);
 
-    virtual void releaseCachedResources();
+    virtual QGraphicsSystemEx* platformExtension();
 };
 
 QT_END_NAMESPACE