diff --git a/include/osg/CameraNode b/include/osg/CameraNode index 87b407dee..04fbb55f7 100644 --- a/include/osg/CameraNode +++ b/include/osg/CameraNode @@ -315,7 +315,7 @@ class OSG_EXPORT CameraNode : public Transform, public CullSettings /** Draw callback for custom operations.*/ - struct DrawCallback : public Object + struct DrawCallback : virtual public Object { DrawCallback() {}