18 signals:

    18 signals:

    19     void pathChanged();

    19     void pathChanged();

    20 

    20 

    21 public slots:

    21 public slots:

    22     void undo();

    22     void undo();

    23 

    24 

    24 private:

    25 private:

    25     QPen m_pen;

    26     QPen m_pen;

    26     QBrush m_brush;

    27     QBrush m_brush;

    27     QGraphicsPathItem  * m_currPath;

    28     QGraphicsPathItem  * m_currPath;