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 the display mode to use when a window is visible and fullscreen.


int SDL_SetWindowFullscreenMode(SDL_Window *window, const SDL_DisplayMode *mode);

Function Parameters

window the window to affect
mode a pointer to the display mode to use, which can be NULL for desktop mode, or one of the fullscreen modes returned by SDL_GetFullscreenDisplayModes().

Return Value

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


This only affects the display mode used when the window is fullscreen. To change the window size when the window is not fullscreen, use SDL_SetWindowSize().


This function is available since SDL 3.0.0.


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