[boduh]

Any reference for this?

[pjmlp]

Yes, Herb Sutter's blog regarding C99.

https://herbsutter.com/2012/05/03/reader-qa-what-about-vc-an...

The new C runtime library was re-written in C++ with extern "C" for the entry points.

https://blogs.msdn.microsoft.com/vcblog/2014/06/10/the-great...

Vista introduced support for C++ in the kernel

https://msdn.microsoft.com/en-us/library/jj620896(v=vs.110)....

[yuhong]

I don't think it happened until much later than Vista.

[pjmlp]

Vista was when the wheels were set on march, not when the travel ended.

For example many of the new APIs were COM based, not plain C like ones.