/// <summary>
        /// Constructor.
        /// </summary>
        public PauseMenuScreen()
            : base("Paused")
        {
            // Flag that there is no need for the game to transition
            // off when the pause menu is on top of it.
            IsPopup = true;

            // Create our menu entries.
            MenuEntry1 resumeGameMenuEntry = new MenuEntry1("Resume Game");
            MenuEntry1 quitGameMenuEntry = new MenuEntry1("Quit Game");

            // Hook up menu event handlers.
            resumeGameMenuEntry.Selected += OnCancel;
            quitGameMenuEntry.Selected += QuitGameMenuEntrySelected;

            // Add entries to the menu.
            MenuEntries.Add(resumeGameMenuEntry);
            MenuEntries.Add(quitGameMenuEntry);
        }
        /// <summary>
        /// Constructor.
        /// </summary>
        public GameOverScreen()
            : base("")
        {
            // Flag that there is no need for the game to transition
            // off when the pause menu is on top of it.
            IsPopup = true;

            // Create our menu entries.
            //MenuEntry1 resumeGameMenuEntry = new MenuEntry1("Resume Game");
            MenuEntry1 quitGameMenuEntry = new MenuEntry1("Return to Main Menu");

            // Hook up menu event handlers.
            //resumeGameMenuEntry.Selected += OnCancel;
            quitGameMenuEntry.Selected += ConfirmQuitMessageBoxAccepted;

            // Add entries to the menu.
            //MenuEntries.Add(resumeGameMenuEntry);
            MenuEntries.Add(quitGameMenuEntry);
        }