XmDragStart - Man Page

#include <Xm/DragDrop​.h>
Widget XmDragStart(
Widget widget,
XEvent *event,
ArgList arglist,
Cardinal argcount);

XmDragStart initiates a drag operation​. This routine returns the DragContext widget that it initializes for the associated drag transaction​. The toolkit is responsible for freeing the DragContext when the drag and drop transaction is complete​.

widget

Specifies the ID of the smallest widget and/or gadget that encloses the source elements selected for a drag operation​.

event

Specifies the XEvent that triggered the drag operation​. This event must be a ButtonPress event​.

arglist

Specifies the argument list​. Any XmDragContext resources not specified in the argument list are obtained from the resource database or are set to their default values​.

argcount

Specifies the number of attribute/value pairs in the argument list (arglist)

For a complete definition of DragContext and its associated resources, see XmDragContext(3)​.

Returns the ID of the DragContext widget that controls this drag and drop transaction​. Returns NULL if the drag cannot be initiated​.

XmDragCancel(3) and XmDragContext(3)​.

XmDragCancel(3), XmDragContext(3).