A Drag and Drop function that frees drop site information
Format
#include <Xm/DragDrop.h> void XmDropSiteUnregister Widget widget
DESCRIPTION
XmDropSiteUnregister informs the toolkit that the specified widget is no longer a registered drop site. The function frees all associated drop site information.
For a complete definition of DropSite and its associated resources, see XmDropSite (3).
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