Screen.SetResolution

public static void SetResolution (int width, int height, FullScreenMode fullscreenMode, int preferredRefreshRate= 0);

public static void SetResolution (int width, int height, FullScreenMode fullscreenMode);

public static void SetResolution (int width, int height, bool fullscreen, int preferredRefreshRate= 0);

public static void SetResolution (int width, int height, bool fullscreen);