XmDropTransferStart — A Drag and Drop function that initiates a drop transfer "XmDropTransferStart" "Drag

XmDropTransferStart  initiates  a  drop  transfer  and  uses the specified argument list to initialize an
       XmDropTransfer object.  The DropTransfer object can be manipulated with XtSetValues and XtGetValues until
       the last call to the XmNtransferProc procedure is made. After that point, the result of using the  widget
       pointer is undefined. The DropTransfer object is freed by the toolkit when a transfer is complete.

       widget    Specifies the ID of the DragContext widget associated with the transaction

       arglist   Specifies the argument list

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

       For a complete definition of DropTransfer and its associated resources, see XmDropTransfer(3).

XmDropTransferStart — A Drag and Drop function that initiates a drop transfer "XmDropTransferStart" "Drag
       and Drop functions" "XmDropTransferStart"

XmDragContext(3), XmDropTransfer(3), and XmDropTransferAdd(3).

                                                                                          XmDropTransferStart(3)

       Returns the ID of the DropTransfer widget.

       #include <Xm/DragDrop.h>
       WidgetXmDropTransferStart(
       Widgetwidget,
       ArgListarglist,
       Cardinalargcount);