void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker           worker = sender as BackgroundWorker;
            IrrlichtCreationParameters p      = new IrrlichtCreationParameters();

            p.DriverType = DriverType.Direct3D9;
            p.WindowID   = (IntPtr)e.Argument;

            IrrlichtDevice device = IrrlichtDevice.CreateDevice(p);

            if (device == null)
            {
                // if device cannot be created by any reason - we just leave this thread,
                // after all IsRedering will report false, so it is all OK.
                return;
            }

            VideoDriver    driver = device.VideoDriver;
            SceneManager   smgr   = device.SceneManager;
            GUIEnvironment gui    = device.GUIEnvironment;

            // setup a simple 3d scene

            CameraSceneNode cam = smgr.AddCameraSceneNode();

            cam.Target = new Vector3Df(0);

            SceneNodeAnimator anim = smgr.CreateFlyCircleAnimator(new Vector3Df(0, 15, 0), 30.0f);

            cam.AddAnimator(anim);
            anim.Drop();

            SceneNode cube = smgr.AddCubeSceneNode(20);

            cube.SetMaterialTexture(0, driver.GetTexture("../../media/wall.bmp"));
            cube.SetMaterialTexture(1, driver.GetTexture("../../media/water.jpg"));
            cube.SetMaterialFlag(MaterialFlag.Lighting, false);
            cube.SetMaterialType(MaterialType.Reflection2Layer);

            smgr.AddSkyBoxSceneNode(
                "../../media/irrlicht2_up.jpg",
                "../../media/irrlicht2_dn.jpg",
                "../../media/irrlicht2_lf.jpg",
                "../../media/irrlicht2_rt.jpg",
                "../../media/irrlicht2_ft.jpg",
                "../../media/irrlicht2_bk.jpg");

            gui.AddImage(
                driver.GetTexture("../../media/lime_logo_alpha.png"),
                new Vector2Di(30, 0));

            // draw all

            while (device.Run())
            {
                driver.BeginScene(false);

                smgr.DrawAll();
                gui.DrawAll();

                // draw stats

                int x = 20;
                int y = driver.ScreenSize.Height - 50;

                driver.Draw2DRectangle(
                    new Recti(x, y, x + driver.ScreenSize.Width - 2 * x, y + 30),
                    new IrrlichtLime.Video.Color(0, 0, 0, 128));

                device.GUIEnvironment.BuiltInFont.Draw(
                    "Driver: " + driver.Name,
                    new Vector2Di(x + 5, y + 5),
                    new IrrlichtLime.Video.Color(255, 255, 255));

                device.GUIEnvironment.BuiltInFont.Draw(
                    "FPS: " + driver.FPS.ToString(),
                    new Vector2Di(x + 5, y + 15),
                    new IrrlichtLime.Video.Color(255, 255, 255));

                driver.EndScene();

                // check for cancellation

                if (worker.CancellationPending)
                {
                    device.Close();
                }

                // check for new command

                lock (backgroundCommand)
                {
                    switch (backgroundCommand.Type)
                    {
                    case Command.Kind.Resized:
                        driver.ResizeNotify(backgroundCommand.Value as Dimension2Di);
                        backgroundCommand.Clear();
                        break;
                    }
                }
            }

            // drop the device

            device.Drop();
        }