UWP, открыть очень маленькую страницу / фрейм

Question

• 1000 * Я не могу заставить окно помощника быть маленьким. «Всегда сверху» в этом окне работает нормально.

Я слежу за примерами UWP:
- режим всегда сверху работает с: uwp samples / app window / overlay
- делает окно маленьким (не работает) из: uwp samples / app window / size

Мой текущий код такой, как показано ниже.
Есть идеи, как сделать окно «помощника» маленьким?

public sealed partial class MainPage : Page
{
    private AppWindow appWindow;
    private Frame appWindowFrame = new Frame();

    async void ShowHelperWindow()
    {
        // Is CompactOverlay supported for our main window?
        // If so, it will be supported for a new window as well.
        // If it isn't, it will not be supported for new windows either so we cannot proceed.
        if (!ApplicationView.GetForCurrentView().IsViewModeSupported(ApplicationViewMode.CompactOverlay))
        {
            return;
        }

        if (appWindow == null)
        {
            // Create a new AppWindow
            appWindow = await AppWindow.TryCreateAsync();
            // Make sure we release the reference to this window, and release XAML resources, when it's closed
            appWindow.Closed += delegate { appWindow = null; appWindowFrame.Content = null; };
            // Is CompactOverlay supported for this AppWindow? If not, then stop.
            if (appWindow.Presenter.IsPresentationSupported(AppWindowPresentationKind.CompactOverlay))
            {
                // Create a new frame for the window
                // Navigate the frame to the CompactOverlay page inside it.
                appWindowFrame.Navigate(typeof(TimerStatusPage));

                var size = new Size(192, 48);
                WindowManagementPreview.SetPreferredMinSize(appWindow, new Size(192, 48));
                // Request the size of our window
                appWindow.RequestSize(size);

                // Attach the frame to the window
                ElementCompositionPreview.SetAppWindowContent(appWindow, appWindowFrame);
                // Let's set the title so that we can tell the windows apart
                appWindow.Title = "size:" + size;
                // Request the Presentation of the window to CompactOverlay
                bool switched = appWindow.Presenter.RequestPresentation(AppWindowPresentationKind.CompactOverlay);
                if (switched)
                {
                    // If the request was satisfied, show the window
                    await appWindow.TryShowAsync();
                }
            }
        }
        else
        {
            await appWindow.TryShowAsync();
        }

    }


    ... rest of class