Drop effect constants for OLE drag and drop events.
|exOLEDropEffectNone||0||Drop target cannot accept the data, or the drop operation was cancelled|
|exOLEDropEffectCopy||1||Drop results in a copy of data from the source to the target. The original data is unaltered by the drag operation.|
|exOLEDropEffectMove||2||Drop results in data being moved from drag source to drop source. The drag source should remove the data from itself after the move.|