Thanks a lot,
it's working if i implement dragMoveEvent.

I think this is a bug in QT4.1.1 as i implemented drag and drop in other widgets (eg. QListView, QWidget, etc) all of them work without implementing dragMoveEvent.

Is it necessary that we implement dragEvent, dragMoveEvent, dragEnterEvent, and dropEvent for all the widgets for drag and drop

regards,
sree