NAME¶

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

SYNOPSIS¶

#include "SDL3/SDL.h"

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

DESCRIPTION¶

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.

FUNCTION PARAMETERS¶

surface

the SDL_Surface
structure to query

key

a pointer filled in with the transparent pixel

RETURN VALUE¶

Returns 0 on success or a negative error code on failure; call

SDL_GetError () for more information.

AVAILABILITY¶

This function is available since SDL 3.0.0.

SEE ALSO¶

SDL_SetSurfaceColorKey(3), SDL_SurfaceHasColorKey(3)