So I have some C++ questions.

First, how many have had experience using C++ with Microsoft's .NET libraries? I'm not talking Managed C++, but regular compiled C++. Do you make an app that uses .NET libraries, or do you make a DLL that is used by a .Net app?

Has anyone ever tried to call Mac OS X libraries from C++? I don't mean using Objective-C++, but accessing the Objective-C runtime API (a C API) to access the Mac OS X libraries. There should be pretty rare need for it, but I'm curious all the same.

Has anyone had a chance to play with Cinder? It's a multimedia library for C++. I'm about to head off to a presentation of it, which what prompted all the questions. I have Mac, PC and Android. I could use Objective-C, C# and Java to do the things I want, but one language for all platforms would ease the headaches of discovering "quirks" in three.