virtual void SetNeedsDisplay( const wxRect* where = NULL ) = 0;
virtual bool GetNeedsDisplay() const = 0;
virtual bool NeedsFocusRect() const;
virtual void SetNeedsFocusRect( bool needs );
virtual void SetNeedsDisplay( const wxRect* where = NULL ) = 0;
virtual bool GetNeedsDisplay() const = 0;
virtual bool NeedsFocusRect() const;
virtual void SetNeedsFocusRect( bool needs );