/// <summary>
        /// Initializes the control.
        /// </summary>
        protected override void OnCreateControl()
        {
            // Don't initialize the graphics device if we are running in the designer.
            if (!DesignMode)
            {
                graphicsDeviceService = GraphicsDeviceService.AddRef(Handle, ClientSize.Width, ClientSize.Height);

                // Register the service, so components like ContentManager can find it.
                services.AddService <IGraphicsDeviceService>(graphicsDeviceService);

                // create xna global variables
                xnaGlobals = new XnaGlobals(services);

                // create ContentManager for this control
                _contentManager = new ContentManager(services, "Content");

                // Give derived classes a chance to initialize themselves.
                Initialize();
            }

            base.OnCreateControl();
        }