public void QuitBtnClick() { ConfirmWindow cw = (ConfirmWindow)SystemUI.Instance.WindowManager.OpenWindow("ConfirmWindow"); cw.SetData("Are you sure you want to quit the game?", (ConfirmWindow self, bool result) => { if (result) { Application.Quit(); #if UNITY_EDITOR EditorApplication.isPlaying = false; #endif } else { SystemUI.Instance.WindowManager.CloseTopWindow(); } }); }