Name

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      TVRDBOX

Purpose

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      Read part of screen image into a byte array.

Category

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Calling Sequence

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      tvrdbox, a

Inputs

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Keyword Parameters

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Keywords

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        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

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      a = image read from screen. out

Common Blocks

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      tvrdbox_com

Notes

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      Notes: See also tvwrbox

Modification History

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      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.