+ // the inactive bitmap currently shown in the control
+ // (may differ in the size from m_bmpStatic)
+ wxBitmap m_bmpStaticReal;
+
+ // updates m_bmpStaticReal from m_bmpStatic if needed
+ virtual void UpdateStaticImage();
+
+ // called by SetInactiveBitmap
+ virtual void DisplayStaticImage() = 0;
+