+ // return the region with all the windows inside this static box excluded
+ virtual WXHRGN MSWGetRegionWithoutChildren();
+
+ // remove the parts which are painted by static box itself from the given
+ // region which is embedded in a rectangle (0, 0)-(w, h)
+ virtual void MSWGetRegionWithoutSelf(WXHRGN hrgn, int w, int h);