I tried to spin up a project with the Microsoft Rust bindings but for what I needed (DirectX12) there’s a lot of necessary helpers in the header files that haven’t got ported over there. And working from one of the samples it was nowhere near as reliable as the C++ version. Beyond ‘oh the C++ code isn’t catching errors’ - every HRESULT was checked as it was using the WinRT bindings.

Kenny Kerr has done an excellent job with both the C++ and Rust bindings, but the Rust one isn’t there yet.

What I’d like to see is more use of a WinMD style metadata for the ABI for functions in DLLs you create. It would be quite simple to define a Span type that could then be imported and called safely from a diverse range of FFIs. I really shouldn’t be having to declare the ABI all over again with ctypes in Python.