Function sdl2_sys::SDL_SetColorKey

pub unsafe extern "C" fn SDL_SetColorKey(
    surface: *mut SDL_Surface, 
    flag: c_int, 
    key: Uint32
) -> c_int

\brief Sets the color key (transparent pixel) in a blittable surface.

\param surface The surface to update \param flag Non-zero to enable colorkey and 0 to disable colorkey \param key The transparent pixel in the native surface format

\return 0 on success, or -1 if the surface is not valid

You can pass SDL_RLEACCEL to enable RLE accelerated blits.