sdlGetColorKey function

int sdlGetColorKey(
  1. Pointer<SdlSurface> surface,
  2. Pointer<Uint32> key
)

Get the color key (transparent pixel) for a surface.

The color key is a pixel of the format used by the surface, as generated by SDL_MapRGB().

If the surface doesn't have color key enabled this function returns -1.

\param surface the SDL_Surface structure to query \param key a pointer filled in with the transparent pixel \returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

\since This function is available since SDL 2.0.0.

\sa SDL_BlitSurface \sa SDL_SetColorKey

extern DECLSPEC int SDLCALL SDL_GetColorKey(SDL_Surface * surface, Uint32 * key)

Implementation

int sdlGetColorKey(Pointer<SdlSurface> surface, Pointer<Uint32> key) {
  final sdlGetColorKeyLookupFunction = libSdl2.lookupFunction<
      Int32 Function(Pointer<SdlSurface> surface, Pointer<Uint32> key),
      int Function(
          Pointer<SdlSurface> surface, Pointer<Uint32> key)>('SDL_GetColorKey');
  return sdlGetColorKeyLookupFunction(surface, key);
}