By turning off deferred rendering.
@ -11,7 +11,7 @@ namespace Direct3DInteropSample
{
static void Main(string[] args)
AppBuilder.Configure<App>().UseWin32().UseDirect2D1().Start<MainWindow>();
AppBuilder.Configure<App>().UseWin32(deferredRendering: false).UseDirect2D1().Start<MainWindow>();
}