QTouchEvent(Multitouch) Moving Items In The Scene

musimbate

Hi,
I am trying to implement Item Moving in my GraphicsView/GraphicsScene based application.The doc suggests that the function to capture touch events looks like this:(Sorry its long :-) )
In case the touch point was moved ,I try to move the item just under the touched point but when I run the application and touch on top of an Item my events seem to be consumed by something else.(The test messageBox is not executed).

I hope you more experienced folks could point out where I might be messing things up.May be there is another specific way to implement the moving of Items?

Any input would be appreciated.

NOTE:I know you can do this on an item basis but the application is designed in a way that makes this the least attractive option.

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bool HBGraphicsView::viewportEvent(QEvent *event)
{

switch (event->type()) {
case QEvent::TouchBegin:
{
    //NOP
}
case QEvent::TouchUpdate:
{
   //NOP
}
case QEvent::TouchEnd:
{

    QList<QTouchEvent::TouchPoint> touchPoints = static_cast<QTouchEvent *>(event)->touchPoints();

    foreach (const QTouchEvent::TouchPoint &touchPoint, touchPoints) {
         switch (touchPoint.state()) {
         case Qt::TouchPointStationary:
             // don't do anything if this touch point hasn't moved
             continue;
         //default:

         case Qt::TouchPointPressed:
         {
           //WE DO NOTHING HERE.... YET.
         }
         break;

//HERE IS DONE ALL THE BULK OF THE MOVE FEATURE.
         case Qt::TouchPointMoved:
             {
               if(scene())
               { 
                    //QMESSAGEBOX TO TEST THAT WE GET IN HERE.
                 //QMessageBox msgBox;
                 //msgBox.setText("GOT IN !!.");
                 //msgBox.exec&#40;&#41;;

                 QPoint point1(touchPoint.lastPos().x(),touchPoint.lastPos().y());
                 QPoint point2(touchPoint.pos().x(),touchPoint.pos().y());
                 QPointF mPoint1InScene=mapToScene(point1);//LAST POS
                 QPointF mPoint2InScene=mapToScene(point2);//CUR POS        
   
  if(scene()->itemAt(this->mapToScene(point2)))
                 {
   qreal dx=mPoint2InScene.x()-mPoint1InScene.x();
    qreal dy=mPoint2InScene.y()-mPoint1InScene.y();
                  scene()->itemAt(this->mapToScene(point2))->moveBy(dx,dy);
                }
                    
              }
             }
             break;

         case Qt::TouchPointReleased:
         {
            //WE DO NOTHING HERE.....YET.
         }
          break;
         }
     }
     break;
}
default:
    break;
}
return QGraphicsView::viewportEvent(event);

}

@