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"

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/master/video/KMDOD https://github.com/Microsoft/Windows-driver-samples/tree/mas... [0]: https://github.com/Microsoft/Windows-Driver-Frameworks/tree/master/src/framework/kmdf/src/core https://github.com/Microsoft/Windows-Driver-Frameworks/tree/...