(This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version.)

SDL_GetSurfaceAlphaMod

Get the additional alpha value used in blit operations.

Header File

Defined in SDL_surface.h

Syntax

int SDL_GetSurfaceAlphaMod(SDL_Surface * surface,
                           Uint8 * alpha);

Function Parameters

SDL_Surface *	surface	the SDL_Surface structure to query.
Uint8 *	alpha	a pointer filled in with the current alpha value.

Return Value

(int) Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Version

This function is available since SDL 2.0.0.

See Also

• SDL_GetSurfaceColorMod
• SDL_SetSurfaceAlphaMod

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CategoryAPI, CategoryAPIFunction, CategorySurface

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