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


Set a window's fullscreen state.


int SDL_SetWindowFullscreen(SDL_Window *window, SDL_bool fullscreen);

Function Parameters

window the window to change
fullscreen SDL_TRUE for fullscreen mode, SDL_FALSE for windowed mode

Return Value

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


By default a window in fullscreen state uses fullscreen desktop mode, but a specific display mode can be set using SDL_SetWindowFullscreenMode().


This function is available since SDL 3.0.0.

CategoryAPI, CategoryVideo

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