How to handle QGraphicsItem mouse events in QGraphicsView

[HiJack]

hi all,
I wrote some objects derived from QGraphicsView and QGraphicsItem, and I simulate a mouse click event in my QGraphicsItem just like this

void QMyItem::mouseReleaseEvent ( QGraphicsSceneMouseEvent * event )
{
//   if(e->buttons() == Qt::LeftButton)
//   SetButtonState(NORMAL);
 
     QGraphicsPixmapItem::mousePressEvent(event);
 
     setSelected(false);    // i don't need the focus
 
     QPointF lastpt = event->lastPos();
     QRectF bRect = boundingRect ();
 
     if(bRect.contains(lastpt))
       ;    // ??? It's a click event.   
 
}

void QMyItem::mouseReleaseEvent ( QGraphicsSceneMouseEvent * event )
{
//   if(e->buttons() == Qt::LeftButton)
//   SetButtonState(NORMAL);

     QGraphicsPixmapItem::mousePressEvent(event);

     setSelected(false);    // i don't need the focus
    
     QPointF lastpt = event->lastPos();
     QRectF bRect = boundingRect ();

     if(bRect.contains(lastpt))
       ;    // ??? It's a click event.   
        
}

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My question is, how can i track the mouse 'click' event in my QGraphicsView? in other words, i need to integrate these mouse events in QGraphicsView and find which item activate it,

void QMyGraphicsView::Command( param)
{
     switch(param)
     {
          case ?? : ...
          case ?? : ...
     }
     ...        
}

void QMyGraphicsView::Command( param)
{
     switch(param)
     {
          case ?? : ...
          case ?? : ...
     }
     ...        
}

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or is there a better place to dispose other than QGraphicsView?

thanks for any advice.