anchor.diff:      "sdl_scancode.h",
       "sdl_mouse.h",
       "sdl_video.h",
  -    "sdl_pixels.h"
  +    "sdl_pixels.h",
  +    "sdl_surface.h",
  +    "sdl_rwops.h"
   
     Parts of the SDL.pas are from the SDL-1.2-Headerconversion from the JEDI-Team,
     written by Domenique Louis and others.
  
positive.code:  *  and destination surfaces.
   *}
  
  function SDL_SetClipRect(surface: PSDLSurface; const rect: PSDLRect): TSDLBool;
  
  {**
   *  Gets the clipping rectangle for the destination surface in a blit.
  
negative.code:  *  surface.
   *}
  
  function SDL_ConvertSurface(src: PSDLSurface; fmt: PSDLPixelFormat; flags: UInt32): PSDLSurface cdecl external {$IFDEF GPC} name 'SDL_ConvertSurface' {$ELSE} SDL_LibName {$ENDIF};
  function SDL_ConvertSurfaceFormat(src: PSDLSurface; pixel_format: UInt32; flags: UInt32): PSDLSurface cdecl external {$IFDEF GPC} name 'SDL_ConvertSurfaceFormat' {$ELSE} SDL_LibName {$ENDIF};
  
  {**
   *  Copy a block of pixels of one format to another format
  