KS> When I'm inverting a picture, I read the pixels with 'Pixels[][]', get 
e
    Are you saying that you are replacing each color with it's opposite?
    What video mode are you using (0x13) ?
    To change color in vga 320x200x1 byte of color, you only need to 
    manipulate the palette to change colors. In mode 0x13, you have
    up to 256 colors (range 0-255): 
    {Pascal code, where color,read,green,blue are bytes
    Begin { SetColor }
      Port[$3C8] := Color; 
      Port[$3C9] := Red;
      Port[$3C9] := Green;
      Port[$3C9] := Blue;
    End;  { SetColor }
    {//  UNTESTED in C++
      outportb(0x3c8, color);
      outportb(0x3c9, red);
      outportb(0x3c9, green);
      outportb(0x3c9, blue);
    }
KS> where's my mistake, are there special features of 'Pixels' or 'RGB'?
    A pixel can be though of as a dot on the screen, that is a mixture or
    red,green, and
    blue (different shades, actually 3 smaller dots make one pixel)
--- GEcho 1.00
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