/// <summary>
        /// Event handler for when the Quit Game menu entry is selected.
        /// </summary>
        void CheckQuitGame(PlayerIndexEventArgs e)
        {
            CheckQuitScreen confirmQuitMessageBox = new CheckQuitScreen();

            confirmQuitMessageBox.Accepted += ConfirmQuitMessageBoxAccepted;

            ScreenManager.AddScreen(confirmQuitMessageBox, ControllingPlayer);
        }
        /// <summary>
        /// When the user cancels the main menu, ask if they want to exit the sample.
        /// </summary>
        protected void OnExit(PlayerIndexEventArgs e)
        {
            CheckQuitScreen confirmExitMessageBox = new CheckQuitScreen();

            confirmExitMessageBox.Accepted += ConfirmExitMessageBoxAccepted;

            ScreenManager.AddScreen(confirmExitMessageBox, e.PlayerIndex);
        }
        /// <summary>
        /// Event handler for when the Quit Game menu entry is selected.
        void CheckMainMenu(PlayerIndexEventArgs e)
        {
            CheckQuitScreen confirmMainMenu = new CheckQuitScreen();

            confirmMainMenu.Accepted += ConfirmMainMenuMessageBoxAccepted;

            ScreenManager.AddScreen(confirmMainMenu, ControllingPlayer);
        }