36    virtual void invalidate() QWT_OVERRIDE;
 
   38    void setMaxColumns( uint maxColumns );
 
   39    uint maxColumns() 
const;
 
   41    uint numRows () 
const;
 
   42    uint numColumns () 
const;
 
   44    virtual void addItem( QLayoutItem* ) QWT_OVERRIDE;
 
   46    virtual QLayoutItem* itemAt( 
int index ) 
const QWT_OVERRIDE;
 
   47    virtual QLayoutItem* takeAt( 
int index ) QWT_OVERRIDE;
 
   48    virtual int count() 
const QWT_OVERRIDE;
 
   50    void setExpandingDirections( Qt::Orientations );
 
   51    virtual Qt::Orientations expandingDirections() 
const QWT_OVERRIDE;
 
   54    virtual int maxItemWidth() 
const;
 
   56    virtual void setGeometry( 
const QRect& ) QWT_OVERRIDE;
 
   58    virtual bool hasHeightForWidth() 
const QWT_OVERRIDE;
 
   59    virtual int heightForWidth( 
int ) 
const QWT_OVERRIDE;
 
   61    virtual QSize sizeHint() 
const QWT_OVERRIDE;
 
   63    virtual bool isEmpty() 
const QWT_OVERRIDE;
 
   64    uint itemCount() 
const;
 
   66    virtual uint columnsForWidth( 
int width ) 
const;
 
   70    void layoutGrid( uint numColumns,
 
   73    void stretchGrid( 
const QRect& rect, uint numColumns,
 
   78    int maxRowWidth( 
int numColumns ) 
const;