HashLink Windows Native.
These are externs for HashLink that allow you to run a (currently small) library of native windows functions.
Look at the examples folder! Currently only tested on HaxeFlixel, but if you can test and provide examples on other frameworks, feel free to send a Pull Request!
This is insight on HLWNative.
It was very simple. I just took cpp function code in my game's NativeFunctions.hx and put it in an actual cpp file. I then created externs from that code.
Well that's very simple too; I noticed that I had to surround my native functions with #if cpp. The thing is, I had a function to make the titlebar dark mode as it fit really well with a game I'm working on; but I didn't have that luxury when compiling to HashLink for a quick test. Thats when I thought something along the lines of, "Hmm, it wouldn't be that hard to make native windows functions for HashLink, I already have the code for the functions anyway. It wouldn't hurt to make a library for them."