XmDataFieldCopy — A DataField function that copies the
primary selection to the clipboard

     #include <Xm/DataF.h>
Boolean XmDataFieldCopy(
Widget widget,
Time time);

     XmDataFieldCopy copies the primary selected text to the

     This routine calls the XmNconvertCallback procedures,
possibly multiple times, with the selection member of the
XmConvertCallbackStruct set to CLIPBOARD and with the parm
member set to XmCOPY.

widget    Specifies the DataField widget ID.

time      Specifies the time at which the selection value is
          to be modified. This should be the time of the
          event that triggered this request.

     For a complete definition of DataField and its
associated resources, see XmDataField(3).

     This function returns False if the primary selection is
NULL, if the widget does not own the primary selection, if
the function is unable to gain ownership of the clipboard
selection, or if no data is placed on the clipboard.
Otherwise, it returns True.