There's also another partial Win32 reimplementation in retrowin32, with the different goal of being a Windows emulator for the web, not for Linux or as alternate OS, at https://evmar.github.io/retrowin32/ It thus has an even more sparse path/fileapi.h implementation [2] than WINE and ReactOS. Written in Rust.

[2] https://github.com/evmar/retrowin32/blob/main/win32/dll/kern...