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      Widget bill board utility for text display.


Calling Sequence



Keyword Parameters


        LINES=txt Text array of initial lines to display.
        RES=RES Specified array of reserved line numbers.
          Top line is number 0.
        NID=nid Returned widget IDs of reserved lines.
        WID=wid Returned xbb widget ID so this widget may
          be destroyed at a later time.
        TITLE=tt Optional title text (def=none).
        GROUP_LEADER=grp specified group leader. When the
          group leader widget is destroyed this widget is also.
        XOFFSET=xoff, YOFFSET=yoff x,y offset to position widget.


Common Blocks


      Notes: this utility is useful for displaying varying
        text such as a status update and so on. It is designed
        to be positioned somewhere out of the way by the user
        It is initialized to display some specified lines of text
        and one or more lines are requested as reserved. The
        widget IDs of the requested reserved lines are returned
        and are used to update the corresponding lines. When
        this widget is no longer needed it may be destroyed.
        Use widget_control to update a line:
          widget_control,nid(2),set_val='New value'
        To delete do: widget_control,wid,/destroy

Modification History

      R. Sterner, 16 Nov, 1993
      R. Sterner, 1997 Nov 12 --- Better help.
      R. Sterner, 2002 Sep 22 --- Added XOFFSET, YOFFSET.
      R. Sterner, 2010 Aug 15 --- Converted arrays from () to [].
  Copyright (C) 1993, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.

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