1 files changed, 5 insertions, 1 deletions
diff --git a/src/opengl/qwindowsurface_gl_p.h b/src/opengl/qwindowsurface_gl_p.h
index d47e3e3..9efd1ae 100644
--- a/src/opengl/qwindowsurface_gl_p.h
+++ b/src/opengl/qwindowsurface_gl_p.h
@@ -65,8 +65,9 @@ class QRegion;
 class QWidget;
 struct QGLWindowSurfacePrivate;
 
-class QGLWindowSurface : public QWindowSurface, public QPaintDevice
+class QGLWindowSurface : public QObject, public QWindowSurface, public QPaintDevice
 {
+    Q_OBJECT
 public:
     QGLWindowSurface(QWidget *window);
     ~QGLWindowSurface();
@@ -91,6 +92,9 @@ public:
 protected:
     int metric(PaintDeviceMetric metric) const;
 
+private slots:
+    void deleted(QObject *object);
+
 private:
     void hijackWindow(QWidget *widget);