No, there isn't a way to develop for Connect IQ with C++, and it's likely not something we'll do. Connect IQ uses it's own language (Monkey C), but we've made it in a way that doesn't tie you to a particular development environment. Eclipse is the most common simply because it's what we've selected as the preferred IDE, but lots of people work from the command line with a text editor, and there are others I'm aware of that have made plug-ins for Visual Studio.
