SDL_SetWindowFullscreen - Request that the window's fullscreen state be changed.

       This function is available since SDL 3.2.0.

       By default a window in fullscreen state uses borderless fullscreen desktop mode, but a specific exclusive
       display mode can be set using

       SDL_SetWindowFullscreenMode ().

       On  some  windowing  systems  this request is asynchronous and the new fullscreen state may not have have
       been applied immediately upon the return of this function. If an immediate change is required, call

       SDL_SyncWindow () to block until the changes have taken effect.

       When the window state changes, an

       SDL_EVENT_WINDOW_ENTER_FULLSCREEN
        or

       SDL_EVENT_WINDOW_LEAVE_FULLSCREEN

       event will be emitted. Note that, as this is just a request, it can be denied by the windowing system.

window the window to change.

       fullscreen
              true for fullscreen mode, false for windowed mode.

       Defined in SDL3/SDL_video.h

       SDL_SetWindowFullscreen - Request that the window's fullscreen state be changed.

       Returns true on success or false on failure; call

       SDL_GetError () for more information.

•(3),  SDL_GetWindowFullscreenMode(3),  •(3),  SDL_SetWindowFullscreenMode(3),  •(3),  SDL_SyncWindow(3),
       •(3), SDL_WINDOW_FULLSCREEN(3)

Simple Directmedia Layer                           SDL 3.2.10                         SDL_SetWindowFullscreen(3)

#include"SDL3/SDL.h"boolSDL_SetWindowFullscreen(SDL_Window*window,boolfullscreen);

       This function should only be called on the main thread.