SDL_GetColorKey
Use this function to get the color key (transparent pixel) for a surface.
Contents
Syntax
int SDL_GetColorKey(SDL_Surface* surface,
Uint32* key)
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.
If the surface doesn't have color key enabled this function returns -1.
Code Examples
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Remarks
The color key is a pixel of the format used by the surface, as generated by SDL_MapRGB().