anchor.diff:  {
     Changelog:
     ----------
  +  v.1.31-Alpha; 30.07.2013: Added "sdl_power.h"
     v.1.30-Alpha; 26.07.2013: Added "sdl_thread.h" and "sdl_mutex.h"
     v.1.25-Alpha; 29.07.2013: Added Makros for SDL_RWops
     v.1.24-Alpha; 28.07.2013: Fixed bug with RWops and size_t
  
positive.code:   "sdl_keyboard.h",
    "sdl_keycode.h",
    "sdl_pixels.h",
    "sdl_main.h",
    "sdl_mouse.h",
    "sdl_mutex.h",
  
negative.code: 
    {* SDL_Error() unconditionally returns -1. *}
  function SDL_Error(code: TSDL_ErrorCode): SInt32 cdecl; external {$IFDEF GPC} name 'SDL_Error' {$ELSE} SDL_LibName {$ENDIF};
  
    //from "sdl_power.h"
  
    {**
     *  The basic state for the system's power supply.
     *}
  type
    TSDL_PowerState = (SDL_POWERSTATE_UNKNOWN,      {**< cannot determine power status *}
                       SDL_POWERSTATE_ON_BATTERY,   {**< Not plugged in, running on the battery *}
                       SDL_POWERSTATE_NO_BATTERY,   {**< Plugged in, no battery available *}
                       SDL_POWERSTATE_CHARGING,     {**< Plugged in, charging battery *}
                       SDL_POWERSTATE_CHARGED);     {**< Plugged in, battery charged *}
  
    {**
     *  Get the current power supply details.
     *
     *   secs Seconds of battery life left. You can pass a NULL here if
     *        you don't care. Will return -1 if we can't determine a
     *        value, or we're not running on a battery.
     *
     *   pct Percentage of battery life left, between 0 and 100. You can
     *       pass a NULL here if you don't care. Will return -1 if we
     *       can't determine a value, or we're not running on a battery.
     *
     *  The state of the battery (if any).
     *}
  function SDL_GetPowerInfo(secs: PInt; pct: PInt): TSDL_PowerState cdecl; external {$IFDEF GPC} name 'SDL_GetPowerInfo' {$ELSE} SDL_LibName {$ENDIF};
  
    //from "sdl_thread.h"
  
  