SDL_GetSurfaceColorKey - Man Page

#include <SDL3/SDL_surface.h>

bool SDL_GetSurfaceColorKey(SDL_Surface *surface, Uint32 *key);

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 false.

surface

the SDL_Surface structure to query.

key

a pointer filled in with the transparent pixel.

Returns true on success or false on failure; call SDL_GetError() for more information.

It is safe to call this function from any thread.

This function is available since SDL 3.2.0.

SDL_SetSurfaceColorKey(3), SDL_SurfaceHasColorKey(3)

SDL_SetSurfaceColorKey(3), SDL_SurfaceHasColorKey(3).