code: def sys_register_SDL_renderer(callback: Callable[[Any], None]) -> None:
      
      with _PropagateException() as propagate:
  
          @ffi.def_extern(onerror=propagate)  # type: ignore
          def _pycall_sdl_hook(sdl_surface: Any) -> None:
              callback(sdl_surface)
  
          lib.TCOD_sys_register_SDL_renderer(lib._pycall_sdl_hook)
docs: Register a custom randering function with libtcod.
  
      Note:
          This callback will only be called by the SDL renderer.
  
      The callack will receive a :any:`CData <ffi-cdata>` void* to an
      SDL_Surface* struct.
  
      The callback is called on every call to :any:`tcod.console_flush`.
  
      Args:
          callback Callable[[CData], None]:
              A function which takes a single argument.