Set the display mode to use when a window is visible at fullscreen.
int SDL_SetWindowDisplayMode(SDL_Window * window, const SDL_DisplayMode * mode);
|window||the window to affect|
|mode||the SDL_DisplayMode structure representing the mode to use, or NULL to use the window's dimensions and the desktop's format and refresh rate|
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 2.0.0.