Integrating Unity with native windows app

This Github repo given by Unity Technologies has examples only for iOS and Android, not for windows, on how to use unity as a library for native apps. In the manual, there is only a hint to "build unity into UnityPlayer.dll". It's not clear what this means. When I take a normal windows unity build, that folder has a UnityPlayer.dll file, Is this the dll file that the manual refers to? Can anyone please guide me on how to integrate unity as a library with native windows apps?