private void OnLoaded(object sender, RoutedEventArgs eventArgs)
        {
            if (GraphicsService == null)
            {
                return;
            }

            _textureGraphicsScreen = new TextureGraphicsScreen(GraphicsService);
            GraphicsScreens        = new GraphicsScreen[] { _textureGraphicsScreen };
            UpdateGraphicsScreen();
        }
 private void OnUnloaded(object sender, RoutedEventArgs eventArgs)
 {
     _textureGraphicsScreen.SafeDispose();
     _textureGraphicsScreen = null;
     GraphicsScreens        = null;
 }