Hi experts,

I code a TabletCanvas inherited from QGraphicsView, and overwrite contextMenuEvent() to bring the item to front in the scene.

However, right click on TabletCanvas cant invokes contextMenuEvent(),
even I disable all mouse events.

Can you tell me what's wrong with it ? Thank your review and answer.


Qt Code: 
  1. class TabletCanvas : public QGraphicsView {
  2. ..
  3.  
  4.     TabletCanvas() 
  5.     {
  6.         zorderAct= new QAction(tr("bring to front"), this);
  7.         connect(zorderAct, SIGNAL(triggered()), this, SLOT(itemZorder()));
  8.         addAction(zorderAct);
  9.     }
  10.  
  11.     virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
  12.     {
  13.         QMenu menu(this);
  14.         menu.addAction(zorderAct);
  15.         menu.exec(event->screenPos());
  16.     }
  17.  
  18.     //virtual void mouseMoveEvent(QMouseEvent *event);       
  19.     //virtual void mousePressEvent(QMouseEvent *event);      
  20.     //virtual void mouseReleaseEvent(QMouseEvent *event);    
  21.     //virtual void mouseDoubleClickEvent(QMouseEvent *event);
  22. };
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