I was in exact same situation, only difference was C# instead of C++ ;). Man that job sucked, I often get very happy when I wake up in the morning simply because I don't work there anymore.

My advice: Leave that job as soon as possible.

I started attending various developer meetups and made some small projects that I could fit in my CV and talk about them. Career opportunities, new contacts and friends started to happen. RoR has an awesome community and the work these guys do is often interesting and engaging. Broaden your horizon, find like-minded people and soon you will find something nice that you could be a part of.