Howto close Native Window and refresh Main Window

Hi everybody,

i open in my Application a new native Window. The Native Window have an Closelistener.

Window applicationWindow = new NativeWindow();
    applicationWindow.addListener(new Window.CloseListener() {

      public void windowClose(CloseEvent e) {
        e.getWindow().removeAllComponents();
        removeWindow(e.getWindow());
        close();
      }
    });
    
    VaadinWeb vaadinWeb = new VaadinWeb();

    applicationWindow.addComponent(vaadinWeb);

    WebApplicationContext ctx = (WebApplicationContext) getContext();
    int width = ctx.getBrowser().getScreenWidth();
    int height = ctx.getBrowser().getScreenHeight();

    addWindow(applicationWindow);

    getMainWindow().open(
                         new ExternalResource(applicationWindow.getURL()),
                         "Application", width, height, Window.BORDER_NONE);

When i close the native Window with "X", the Listener get an event, and close the Native Window.
My Problem is, that the main Window doesn't reload the application.
How can i reload the application? The normal .close() doesn't do it.

Thanks for your help.