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TVRDBOX

TVRDBOX

Name


      TVRDBOX

Purpose


      Read part of screen image into a byte array.

Category


Calling Sequence


      tvrdbox, a

Inputs


Keyword Parameters


Keywords


        COLOR=clr Set box color (-2 for dotted).
        /NOERASE prevents last box from being erased first.
          Good when a new image covers up last box.
        /EXITERASE means erase box on exit.
        CODE=c returns exit code: 4=normal, 2=alternate.
        X=x, Y=y Returned device coordinates of LL corner.

Outputs


      a = image read from screen. out

Common Blocks


      tvrdbox_com

Notes


      Notes: See also tvwrbox

Modification History


      R. Sterner, 19 Nov, 1989
      R. Sterner, 1994 Dec 1 --- Added keywords X and Y.
  Copyright (C) 1989, 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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