编写一个登陆框

void OnGUI()    {        //登陆框        GUI.Box(new Rect(10, 10, 200, 120), " 登陆框 ");        //用户名        GUI.Label(new Rect(20, 40, 50, 30), " 用户名 ");        userName = GUI.TextField(new Rect(70, 40, 120, 20), userName);        //密码        GUI.Label(new Rect(20, 70, 50, 30), " 密码 ");        password = GUI.PasswordField(new Rect(70, 70, 120, 20), password, '*');        //登陆按钮        if(GUI.Button(new Rect(70,100,50,25)," 登陆 "))        {            if (userName == "111" && password == "222")                Debug.Log(" 登陆成功 ");            else Debug.Log(" 登陆失败 ");        }    }