XmListGetSelectedPos - A List function that returns the position of every selected item in the list
#include <Xm/List.h>
Boolean XmListGetSelectedPos (widget, position_list, position_count)
Widget widget;
int **position_list;
int *position_count;
XmListGetSelectedPos is a Boolean function that returns an array of the positions of the selected items in a List.
For a complete definition of List and its associated resources, see XmList(3X).
Returns TRUE if the list has any selected items, and FALSE if it does not.