Recommendations for UML tool to model C++/QNX (Eclipse-CDT)?

Can someone recommend a UML modelling toolfor QNX? I'm not bothered about generating code (although it'd be nice) I just want to knock something up and I'm looking for some steer.

I've had a quick look at the mdt-uml2tools Eclipse plugin but I don't seem to be able to do compositions/aggregations, I guess because it's java related.

Any thou开发者_StackOverflow中文版ghts or recommendations?

A number of comercial UML tool ventors support Eclipse integartion, for example:

Visual Paradigm SDE

Enterprise Architect Eclipse MDG Link

Enterprise Architect Eclipse MDG Integration

However if code generation is not a requirement, do you require such tight integration with Eclipse?

I've been very happy with the standalone, free BoUML. I've used it both on small and large projects. It will generate code, but I prefer it more for reverse engineering/analysis and sketching ideas.