>I have had problems trying to debug ole drag-n-drop events before and I used the "old fashion" way of debugging by writing to a file. Try using the DEBUGOUT command (use SET DEBUGOUT TO filename first) to write values to a file in real-time.

Sounds like worth a try. My problem is that no event is fired when dragging something from outlook over my listview, tried with various methods of debugging, including event tracking.