#ifdef Windows

WinUI 3 Preview 3

Microsoft released Windows UI Library (WinUI) 3, an evolution of the UWP/XAML platform, that decouples the XAML UI framework from the Windows OS, and ships it in its whole as a NuGet package, effectively allowing developers to support new features of XAML on older versions of Windows 10 without the need of end-users to upgrade their OS.