Is there a way to set the environment path programmatically in C++ on Windows?

Question

Is there a way to set the global windows path environment variable programmatically (C++)?

As far as I can see, putenv sets it only for the current application.

Answer 1

There is no API - changing the registry is the way to do it. The changed value will be used for processes starting after the change was made.

Also: Notice that running applications must actively process the settings changed message and many (most?) do not do so.