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PROGRAM vidmodes;
 
{ VIDMODES.PAS illustrates configuration and text window functions
  including:
 
      _GetTextPosition    _SetTextPosition    _SetVideoMode
      _GetVideoConfig     _SetTextWindow      _SetVideoModeRows
      _OutText
}
 
USES
    MSGraph;
 
TYPE
    rowtype  = ARRAY [0..4] OF Integer;
    modetype = ARRAY [0..16] OF Integer;
    nametype = ARRAY [0..16] OF STRING[12];
 
CONST
    rows  : rowtype  = ( 60, 50, 43, 30, 25 );
 
    modes : modetype = ( _TextBW40,
           _TextC40,     _TextBW80,    _TextC80,      _MRes4Color,
           _MResNoColor, _HResBW,      _TextMono,     _HercMono,
           _MRes16Color, _HRes16Color, _EResNoColor,  _EResColor,
           _VRes2Color,  _VRes16Color, _MRes256Color, _OResColor );
 
    names : nametype = ( 'TEXTBW40',
           'TEXTC40',     'TEXTBW80',    'TEXTC80',      'MRES4COLOR',
           'MRESNOCOLOR', 'HRESBW',      'TEXTMONO',     'HERCMONO',
           'MRES16COLOR', 'HRES16COLOR', 'ERESNOCOLOR',  'ERESCOLOR',
           'VRES2COLOR',  'VRES16COLOR', 'MRES256COLOR', 'ORESCOLOR' );
 
VAR
    error_code,
    i, j, row   : Integer;
    vc          : _VideoConfig;
    r, c        : Integer;
    old         : Boolean;
 
{================================ itos =================================
  The itos function returns a string representing its integer parameter.
}
 
FUNCTION itos( VAR Int : Integer ) : STRING;
 
VAR
    tp : STRING;
 
BEGIN
    Str( Int, tp );
    itos := tp;
END;
 
{============================ main program ============================}
 
BEGIN
 
    old := _DisplayCursor( False );
 
    { Try each mode. }
    FOR i := 0 TO 16 DO
        BEGIN
        FOR j := 0 TO 4 DO
            BEGIN
            { Try each possible number of rows. }
            row := _SetVideoModeRows( modes[i], rows[j] );
            IF ( row = rows[j] ) THEN
                BEGIN
                _GetVideoConfig( vc );
                _SetTextWindow( 2, 5, vc.NumTextRows - 2,
                                      vc.NumTextCols - 2);
                _GetTextPosition( r, c );
                _OutText( 'Video mode:   ' );
                _OutText( names[i] );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'X pixels:     ' );
                _OutText( itos( vc.NumXPixels ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Y pixels:     ' );
                _OutText( itos( vc.NumYPixels ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Text columns: ' );
                _OutText( itos( vc.NumTextCols ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Text rows:    ' );
                _OutText( itos( vc.NumTextRows ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Colors:       ' );
                _OutText( itos( vc.NumColors ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Bits/pixel:   ' );
                _OutText( itos( vc.BitsPerPixel ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Video pages:  ' );
                _OutText( itos( vc.NumVideoPages ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Mode:         ' );
                _OutText( itos( vc.Mode ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Adapter:      ' );
                _OutText( itos( vc.Adapter ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Monitor:      ' );
                _OutText( itos( vc.Monitor ) );
                Inc( r );
                _SetTextPosition( r, c );
                _OutText( 'Memory:       ' );
                _OutText( itos( vc.Memory ) );
                Readln;
                END;
            END;
        END;
    old := _DisplayCursor( True );
    error_code := _SetVideoMode( _DefaultMode );
 
END.