the type of the event (%GDK_DRAG_ENTER, %GDK_DRAG_LEAVE, %GDK_DRAG_MOTION, %GDK_DRAG_STATUS, %GDK_DROP_START or %GDK_DROP_FINISHED).
See Implementation
the type of the event (%GDK_DRAG_ENTER, %GDK_DRAG_LEAVE, %GDK_DRAG_MOTION, %GDK_DRAG_STATUS, %GDK_DROP_START or %GDK_DROP_FINISHED).