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(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Save a surface to a seekable SDL data stream in BMP format.

Header File

Defined in <SDL3/SDL_surface.h>


int SDL_SaveBMP_IO(SDL_Surface *surface, SDL_IOStream *dst, SDL_bool closeio);

Function Parameters

SDL_Surface * surface the SDL_Surface structure containing the image to be saved.
SDL_IOStream * dst a data stream to save to.
SDL_bool closeio if SDL_TRUE, calls SDL_CloseIO() on dst before returning, even in the case of an error.

Return Value

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


Surfaces with a 24-bit, 32-bit and paletted 8-bit format get saved in the BMP directly. Other RGB formats with 8-bit or higher get converted to a 24-bit surface or, if they have an alpha mask or a colorkey, to a 32-bit surface before they are saved. YUV and paletted 1-bit and 4-bit formats are not supported.


This function is available since SDL 3.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategorySurface

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