WinUIEx
February 3, 2026 ยท View on GitHub
WinUI Extensions

A set of extension methods and classes to fill some gaps in WinUI 3, mostly around windowing, authentication and helpers to simplify code.
Watch WinUIEx covered in the On .NET Live show:
NuGet Package:
Features
- Window Extension methods
- HWND Window Handle Extensions methods
- Extended
WindowExWindow class - Window Manager
- Splash Screens
- OAuth Web Authentication
- Custom Window Backdrops
NumberBoxInt32,NumberBoxDecimalandNumberBox<T>- Generic number input controls with support for expressions.- Tray Icon support including WinUI 3 based context menus.
- TitleBar control (Deprecated in favor of WinAppSDK 1.7 TitleBar)
- Code analyzers for Windows App SDK APIs to guide the developer.
And more to come...
Example of WinUIEx production apps
- Microsoft Power Toys
- Windows Subsystem for Linux
- Windows Phone Link
- Windows Template Studio
- Windows Dev Home
- Files App
- Lively Wallpaper
Functional Test App
https://github.com/dotMorten/WinUIEx/assets/1378165/ce41d0b0-da5d-40c5-b6fd-ff272f15d57e
Custom Backdrops:
https://github.com/dotMorten/WinUIEx/assets/1378165/49274b59-5628-4a0c-b6ca-4f38784614cf
