XmDragCancel - A Drag and Drop function that terminates a drag transaction
#include <Xm/DragDrop.h> void XmDragCancel (dragcontext) Widget dragcontext;
XmDragCancel terminates a drag operation and cancels any pending actions of the specified DragContext. This routine can only be called by the initiator client.
For a complete definition of DragContext and its associated resources, see XmDragContext(3X).