windows-rs

It's a shame that, unlike with Win32, using WinUI places pretty harsh restrictions on which programming languages and environments you can use. Only C# and C++ are supported, the latter only with Microsoft compilers. For everything else, including Rust[1], Python and MinGW C/C++, there is no answer for OP's question, and the effect of this on the visual consistency of the Windows desktop is obvious - there is none. Every third-party app uses a different toolkit with a different look and feel, because the library providing the standard look and feel simply isn't available to the majority of developers. [1]: https://github.com/microsoft/windows-rs/pull/1836

Since Microsoft developed the curious WinRT/Rust language projection, I've wondered if this would happen. I mean, sure, it's useful anyway but still quite a niche product and was an oddly sudden dive into Rust from Microsoft at the time. https://github.com/microsoft/windows-rs

> already has the WDK for a while I would interpret "for a while" as more than ~7 weeks. Version 0.46 added initial WDK support: https://github.com/microsoft/windows-rs/releases/tag/0.46.0

There is an official Rust Windows API: https://github.com/microsoft/windows-rs