I’ve integrated the PhilChooser in my vst, and I want to drag some files from the PhilChooser to my audio player (which is also in the vst). I made my player a subclass of DragAndDropTarget, and defined the two methods “IsInterestedInDragSource” and “ItemDropped”. I also made my main UI class a subclass of DragAndDropContainer. It should work like this because I remarked that in the ListFileView class of PhilChooser, “startDragging” is called when a drag has started. The problem is that I get an exception when I move the mouse while dragging over my audio player. If I drag and drop the audio file very quickly, it works… Does somebody have an idea? Thanks a lot.