awk script not producing output Post: 302971096

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sdl_setcolors

SDL_SetColors(3)						 SDL API Reference						  SDL_SetColors(3)

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  pal-
       ettes (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

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

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