如何创建覆盖所有垂直连接显示器的单个WPF全屏窗口？

我有多台不同分辨率的显示器垂直连接，希望创建一个单独的WPF Window，使其在所有屏幕上最大化显示。尝试了以下代码解决方案但未生效，实际效果如下：

public MainWindow()
{
    InitializeComponent();
    this.WindowStyle = WindowStyle.None;
    this.Topmost = true;

    this.Background = System.Windows.Media.Brushes.Black;
    this.Loaded += MainWindow_Loaded;1
    Background = System.Windows.Media.Brushes.Black;
    WindowStartupLocation = WindowStartupLocation.Manual;
    this.Show();
}

private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
    Rectangle totalBounds = System.Windows.Forms.Screen.AllScreens
        .Select(screen => screen.Bounds)
        .Aggregate(Rectangle.Union);

    
    this.Left = totalBounds.Left;
    this.Top = totalBounds.Top;
    this.Width = totalBounds.Width;
    this.Height = totalBounds.Height;            

    var hwnd = new WindowInteropHelper(this).EnsureHandle();
    WindowsServices.SetWindowPos(hwnd, WindowsServices.HWND_TOPMOST, (int)this.Left, (int)this.Top, (int)this.Width, (int)this.Height, WindowsServices.SWP_NOACTIVATE);
}

我的屏幕布局如下：

还尝试过一种为每个屏幕创建新窗口的方案，但不符合我单窗口覆盖所有屏幕的需求。

内容的提问来源于stack exchange，提问作者the.cicada.himself