Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

                                             ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
  Constant:  _DEFAULTMODE, _MAXRESMODE, _MAXCOLORMODE, _TEXTBW40,
             _TEXTC40, _TEXTBW80, _TEXTC80, _MRES4COLOR, _MRESNOCOLOR,
             _HRESBW, _TEXTMONO, _HERCMONO, _MRES16COLOR, _HRES16COLOR,
             _ERESNOCOLOR, _ERESCOLOR, _VRES2COLOR, _VRES16COLOR,
             _MRES256COLOR, _ORESCOLOR
 
  Context:   _setvideomode, _setvideomoderows
 
  Include:   <graph.h>
 
  Synopsis:  Specifies the video screen mode for all graphics
             operations.
 
     The following table lists the display-mode constants and their
     corresponding display types, screen sizes, color capacities, and
     adapter requirements:
 
     Mode              Type     Size        Colors      Adapter
 
     _DEFAULTMODE      Start-up mode
     _MAXRESMODE       Highest resolution graphics mode
     _MAXCOLORMODE     Maximum colors graphics mode
     _TEXTBW40         M/T      40x25       16          CGA
     _TEXTC40          C/T      40x25       16          CGA
     _TEXTBW80         M/T      80x25       16          CGA
     _TEXTC80          C/T      80x25       16          CGA
     _MRES4COLOR       C/G      320x200     4           CGA
     _MRESNOCOLOR      M/G      320x200     4           CGA
     _HRESBW           M/G      640x200     2           CGA
     _TEXTMONO         M/T      80x25       1           MDPA
     _HERCMONO         M/G      720x348     1           HGC
     _MRES16COLOR      C/G      320x200     16          EGA
     _HRES16COLOR      C/G      640x200     16          EGA
     _ERESNOCOLOR      M/G      640x350     1           EGA
     _ERESCOLOR        C/G      640x350     64          EGA
     _VRES2COLOR       C/G      640x480     2           VGA
     _VRES16COLOR      C/G      640x480     16          VGA
     _MRES256COLOR     C/G      320x200     256         VGA
     _ORESCOLOR        C/G      640x400     1 of 16     Olivetti
                                                        graphics
 
     Type:     M indicates monochrome
               C indicates color output
               T indicates text
               G indicates graphics
 
     Size:     For text modes, size is given in characters (columns
               multiplied by rows). For graphics modes, size is given
               in pixels (horizontal multiplied by vertical).
 
     Colors:   For monochrome displays, the number of colors is the
               number of gray shades.
 
     Adapter:  Adapters are the IBM (and compatible) Monochrome
               Display Adapter (MDPA), Color Graphics Adapter (CGA),
               Enhanced Graphics Adapter (EGA), Video Graphics Array
               (VGA), Hercules-compatible adapter, and Olivetti-
               compatible adapter.
 
     NOTE: Only standard hardware is described here, but display
           hardware that is strictly compatible with IBM, Hercules, or
           Olivetti hardware should also work as described.
 
           The modes _MAXRESMODE and _MAXCOLORMODE fail for adapters
           that do not support graphics mode.