XmListPosToBounds — A List function that returns the bounding box of an item at a specified position in a

XmListPosToBounds  returns  the  coordinates  of an item within a list and the dimensions of its bounding
       box. The function returns the associated x and y-coordinates of the upper left corner of the bounding box
       relative to the upper left corner of the List widget, as well as the width and the height of the box. The
       caller can pass a NULL value for the x, y, width, or height parameters to indicate that the return  value
       for that parameter is not requested.

       widget    Specifies the ID of the List widget.

       position  Specifies  the  position  of  the specified item.  A value of 1 indicates the first item in the
                 list; a value of 2 indicates the second item; and so on. A value of 0 (zero) specifies the last
                 item in the list.

       x         Specifies a pointer to the returned x-coordinate of the item.

       y         Specifies the pointer to the returned y-coordinate of the item.

       width     Specifies the pointer to the returned width of the item.

       height    Specifies the pointer to the returned height of the item.

       For a complete definition of List and its associated resources, see XmList(3).

XmListPosToBounds — A List function that returns the bounding box of an item at a specified position in a
       list "XmListPosToBounds" "List functions" "XmListPosToBounds"

XmList(3) and XmListYToPos(3).

                                                                                            XmListPosToBounds(3)

       If the item at the specified position is not visible, returns False, and the returned values (if any) are
       undefined. Otherwise, this function returns True.

       #include <Xm/List.h>
       BooleanXmListPosToBounds(
       Widgetwidget,
       intposition,
       Position*x,
       Position*y,
       Dimension*width,
       Dimension*height);