UIHANDLER OnReceiveDrag

Called whenever the user has released the cursor over the frame while dragging something.

Arguments

 * self : Widget - the widget receiving the drag event.

Details

 * The widget must be to receive drag events.
 * You can use to find out whether it was an item, spell, macro, or amount of money, and the specifics thereof.
 * The cursor is not automatically cleared; call if that behaviour is desired.
 * The handler also fires when dragging widgets onto other widgets, in which case provides no relevant information.