Help with IBM-PC VGA Graphics GrSetmode()

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Article #50752

#50752

From: Patricia B. Henry
Date: Thu, 19 Aug 1993 20:06

25 lines
1325 bytes

Help!  When I do GrSetmode(), nothing happens.  It stays in text mode.
My environment variable GO32 is set thusly: 
set GO32=driver d:/gnu/gcc/drivers/tseng4k.grd gw 1024 gh 768

I do have a Tseng 4000 video chip, and have used 1024 x 768 mode in DOS
and Windows apps.

Here's my test program.

#include <graphics.h>

void main(void)
{
  int i;

  printf("%ld\t%ld\n",GrMaxX(),GrMaxY());
  /*  GrSetMode(GR_320_200_graphics); */
  GrSetMode(GR_default_graphics);
  /*  GrLine(0,0,GrMaxX(),GrMaxY(),1); */
  printf("%ld\t%ld\n",GrMaxX(),GrMaxY());
  GrLine(0,0,100,100,1);
  getkey();
  GrSetMode(GR_default_text);
}

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From: bilgeoid@stein.u.washington.edu (Patricia B. Henry)
Newsgroups: gnu.gcc.help
Subject: Help with IBM-PC VGA Graphics GrSetmode()
Date: 19 Aug 1993 20:06:46 GMT
Organization: University of Washington, Seattle
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