SDL_SetColors man page on JazzOS

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SDL_SetColors(3)	       SDL API Reference	      SDL_SetColors(3)

       SDL_SetColors - Sets a portion of the colormap for the given 8-bit sur‐

       #include "SDL.h"

       int SDL_SetColors(SDL_Surface *surface, SDL_Color *colors,  int	first‐
       color, int ncolors);

       Sets a portion of the colormap for the given 8-bit surface.

       When  surface  is  the surface associated with the current display, the
       display	colormap  will	be  updated  with  the	requested  colors.  If
       SDL_HWPALETTE  was  set	in  SDL_SetVideoMode flags, SDL_SetColors will
       always return 1, and the palette is guaranteed to be set	 the  way  you
       desire,	even if the window colormap has to be warped or run under emu‐

       The color components of a SDL_Color structure are 8-bits in size,  giv‐
       ing you a total of 256^3 =16777216 colors.

       Palettized (8-bit) screen surfaces with the SDL_HWPALETTE flag have two
       palettes, a logical palette that is used for mapping blits to/from  the
       surface	and  a physical palette (that determines how the hardware will
       map the colors to the display). SDL_SetColors  modifies	both  palettes
       (if  present),  and  is	equivalent  to calling SDL_SetPalette with the
       flags set to (SDL_LOGPAL | SDL_PHYSPAL).

       If surface is not a palettized surface,	this  function	does  nothing,
       returning  0. If all of the colors were set as passed to SDL_SetColors,
       it will return 1. If not all the color  entries	were  set  exactly  as
       given,  it will return 0, and you should look at the surface palette to
       determine the actual color palette.

       /* Create a display surface with a grayscale palette */
       SDL_Surface *screen;
       SDL_Color colors[256];
       int i;
       /* Fill colors with color information */

       /* Create display */
       screen=SDL_SetVideoMode(640, 480, 8, SDL_HWPALETTE);
	 printf("Couldn't set video mode: %s
       ", SDL_GetError());

       /* Set palette */
       SDL_SetColors(screen, colors, 0, 256);

       SDL_Color SDL_Surface, SDL_SetPalette, SDL_SetVideoMode

SDL			    Tue 11 Sep 2001, 23:01	      SDL_SetColors(3)

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