Hi,

I have started to implement a drag n drop operation from QListWidget to QTreeWidget. I have implemented the drag operation but it is not working. Here is my code.

Qt Code: 
  1. void NameListWidget::mousePressEvent(QMouseEvent *event)
  2. {
  3. 	if(event->buttons() & Qt::LeftButton){
  4. 		startPos = event->pos();
  5. 	}
  6. 	QListWidget::mousePressEvent(event);
  7. }
  8.  
  9. void NameListWidget::mouseMoveEvent(QMouseEvent *event)
  10. {
  11. 	if(event->buttons() & Qt::LeftButton){
  12. 		int xDiff = startPos.x() - event->pos().x();
  13.  
  14. 		if(xDiff > 3 ){//drag only if the movement is towards left 
  15. 			startDrag();
  16. 		}
  17. 	}
  18. 	QListWidget::mouseMoveEvent(event);
  19. }
  20.  
  21. void NameListWidget::startDrag()
  22. {
  23. 	QListWidgetItem * items = currentItem();
  24. 	if(item){
  25. 		QMimeData *mimeData = new QMimeData;
  26. 		mimeData->setText(item->text());
  27. 		QDrag *drag = new QDrag(this);
  28. 		drag->setMimeData(mimeData);
  29. 		drag->setPixmap(QPixmap(":/images/personsmall.png"));
  30. 		drag->setHotSpot(QPoint(drag->pixmap().width()/2,
  31.                                 drag->pixmap().height()));
  32. 		drag->start();
  33. 	}
  34. }
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When I start dragging the pixmap does not appear. Can someone please tell what can be the problem ?

Thanks a lot.