XmListSetItem - A List function that makes an existing item the first visible item in the list
#include <Xm/List.h>
void XmListSetItem (widget, item)
Widget widget;
XmString item;
XmListSetItem makes the first item in the list that matches item the first visible item in the list.
For a complete definition of List and its associated resources, see XmList(3X).