Snippets related to the WindowsAppSDK go here.

Starting with v1.3, the following features/functionality are available.

Version 1.3 dramatically reduced the amount of code required to enable custom backdrops on your windows.

public MainWindow()
{
    this.InitializeComponent();

    this.SystemBackdrop = new MicaBackdrop(); // Mica
    this.SystemBackdrop = new MicaBackdrop({ MicaBackdrop.Style = SystemBackdropStyles.MicaAlt }); // Mica Alt
    this.SystemBackdrop = new AcrylicBackdrop(); // Acrylic
}

Version 1.3 also dramatically reduced the amount of boilerplate and duplicate code required to access and interact with the AppWindow for your app:

// You're now able to use AppWindow APIs directly from an Window through Window.AppWindow. 
public static Microsoft.UI.Windowing.AppWindow m_AppWindow;

public MainWindow()
{
  this.InitializeComponent();
  
  this.AppWindow.Title = ""; // Perform actions directly on AppWindow
}

AppWindow Information:

• For the Windows App SDK version of Microsoft.UI.Windowing.AppWindow we're supporting only top-level HWNDs. There's a 1:1 mapping between an AppWindow and a top-level HWND.
• The lifetime of an AppWindow object and an HWND is the same—the AppWindow is available immediately after the window has been created; and it's destroyed when the window is closed.
• AppWindow is available only to desktop apps (both packaged and unpackaged); it's not available to UWP apps.