For the past few months I've been delving deeper into Win32/C++ as part of my thesis work (since the service I'm working on runs on a wireless ad hoc platform based on WinCE). One resource that I keep coming back to when dealing with obscure C++ "features" is the C++ FAQ. What's online is the "lite" version, and it's excellent, but buying the book is a much better option, as it contains a lot more material. A must-have when working with C++ in any environment.