Luna

For the most part probably not, but Microsoft cares a lot about backwards compatibility so I imagine some of this code still lives on in Windows

Though you should take this with a grain of salt, since I’m saying this as someone who 1. never looked at Wine source code 2. used the Windows API only once, for a very small program 3. is still learning programming, so I wouldn’t call myself a coder (yet) either

Probably yeah, but now they’ve officially released it under the MIT license so stuff like Wine could now potentially borrow some code to improve compatibility with Windows