Windows-Driver-Frameworks

I also used to work at Microsoft. CNF was primarily used in the kernel and driver code but rarely in userland code, with the exception of certain tools that were developed and maintained by the kernel team (such as powercfg.exe). CNF was one of the few coding styles at Microsoft that I really enjoyed using due to how clean and disciplined it made the code. I felt that the style really reflected Dave Cutler's attention to detail and quality. You can see more examples of CNF in the now open-sourced Windows-Driver-Frameworks: https://github.com/Microsoft/Windows-Driver-Frameworks

I meant it's written in C++[0]. The interface is exported through standard C functions, but the header files also have the declarations guarded with "extern "C"". Microsoft do have some sample drivers that are written in C++, e.g. https://github.com/Microsoft/Windows-driver-samples/tree/mas... [0]: https://github.com/Microsoft/Windows-Driver-Frameworks/tree/...

It has a C API, but everything under the hood is C++. The source is actually public now: https://github.com/Microsoft/Windows-Driver-Frameworks