XmDataFieldGetSelection — A DataField function that retrieves the value of the primary selection

XmDataFieldGetSelection retrieves the value of the primary selection. It returns a  NULL  pointer  if  no
       text  is  selected  in the widget. The application is responsible for freeing the storage associated with
       the string by calling XtFree.

       widget    Specifies the DataField widget ID

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

XmDataFieldGetSelection  —  A  DataField  function  that  retrieves  the  value  of the primary selection
       "XmDataFieldGetSelection" "DataField functions" "XmDataFieldGetSelection"

XmDataField(3) and XmDataFieldGetSelectionWcs(3).

                                                                                      XmDataFieldGetSelection(3)

       Returns a character pointer to the string that is associated with the primary selection.

       #include <Xm/DataF.h>
       char*XmDataFieldGetSelection(
       Widgetwidget);