private void DeviceLost(CanvasDevice sender, object args)
{
sender.DeviceLost -= DeviceLost;
_canvasDevice = new CanvasDevice();
_canvasDevice.DeviceLost += DeviceLost;
_deviceLostHelper.WatchDevice(_canvasDevice);
CanvasComposition.SetCanvasDevice(_graphicsDevice, _canvasDevice);
}
public ImageLoader(Compositor compositor)
{
Debug.Assert(compositor != null && _compositor == null);
_compositor = compositor;
_drawingLock = new object();
_deviceLostHelper = new DeviceLostHelper();
_canvasDevice = new CanvasDevice();
_canvasDevice.DeviceLost += DeviceLost;
_deviceLostHelper.WatchDevice(_canvasDevice);
_deviceLostHelper.DeviceLost += DeviceRemoved;
_graphicsDevice = CanvasComposition.CreateCompositionGraphicsDevice(_compositor, _canvasDevice);
_graphicsDevice.RenderingDeviceReplaced += RenderingDeviceReplaced;
}