CreateDragImage

Ok, I have multiple selection between two tree controls. The drag and drop works for multiple selection too, however I don't know how to do the drag image of multiple selections (on a tree or otherwise). Does anyone know how to do this? Do I need to take the CrateDragImage of each individual item and paste them together?

the explorer it self creates only a dragimage if you have 1 item to drag
for multiple items ite draws the bounding rectangle of the items selected