Provided by: libsdl1.2-dev_1.2.15+dfsg2-0.1ubuntu0.2_amd64 
NAME
SDL_SetColors - Sets a portion of the colormap for the given 8-bit surface.
SYNOPSIS
#include "SDL.h"
int SDL_SetColors(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors);
DESCRIPTION
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 emulation.
The color components of a SDL_Color structure are 8-bits in size, giving 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).
RETURN VALUE
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.
EXAMPLE
/* Create a display surface with a grayscale palette */
SDL_Surface *screen;
SDL_Color colors[256];
int i;
.
.
.
/* Fill colors with color information */
for(i=0;i<256;i++){
colors[i].r=i;
colors[i].g=i;
colors[i].b=i;
}
/* Create display */
screen=SDL_SetVideoMode(640, 480, 8, SDL_HWPALETTE);
if(!screen){
printf("Couldn't set video mode: %s
", SDL_GetError());
exit(-1);
}
/* Set palette */
SDL_SetColors(screen, colors, 0, 256);
.
.
.
.
SEE ALSO
SDL_Color SDL_Surface, SDL_SetPalette, SDL_SetVideoMode