119    void setMaskMode( MaskMode );
 
  120    MaskMode maskMode() 
const;
 
  122    void setRenderMode( RenderMode );
 
  123    RenderMode renderMode() 
const;
 
  125    virtual bool eventFilter( QObject*, QEvent*) QWT_OVERRIDE;
 
  128    void updateOverlay();
 
  131    virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
 
  132    virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
 
  134    virtual QRegion maskHint() 
const;
 
  144    void draw( QPainter* ) 
const;