02-26-2016
Since your modifiying the $RANDOM with the length(count) of its array items, and since $RANDOM has only one, only the first items is displayed.
Hope this helps
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LEARN ABOUT OSF1
xmlistreplacepositions
XmListReplacePositions(3X) XmListReplacePositions(3X)
NAME
XmListReplacePositions - A List function that replaces items in a list based on position
SYNOPSIS
#include <Xm/List.h>
void XmListReplacePositions (widget, position_list, item_list, item_count)
Widget widget;
int *position_list;
XmString *item_list;
int item_count;
DESCRIPTION
XmListReplacePositions replaces noncontiguous items in a list. The item at each position specified in position_list is replaced with the
corresponding entry in item_list. When the items are inserted into the list, they are compared with the current XmNselectedItems list. Any
of the new items that match items on the selected list appears selected. A warning message is displayed if a specified position is
invalid; that is, the value is 0, a negative integer, or a number greater than the number of items in the list. Specifies the ID of the
List widget. Specifies an array of the positions of items to be replaced. The position of the first item in the list is 1; the position
of the second item is 2; and so on. Specifies an array of the replacement items. Specifies the number of elements in position_list and
item_list. This number must be non-negative.
For a complete definition of List and its associated resources, see XmList(3X).
SEE ALSO
XmList(3X)
XmListReplacePositions(3X)