Any chance there's a tree view and radio buttons on the road map?

[RallyTronics]

No description provided.

[cwhitney]

I hadn't considered tree view, but radio buttons shouldn't be too hard to implement. Any opinion on what makes the most sense for syntax? I think InterfaceGl takes an enum list with a vector of strings.

Something like:
vector choices ...
gui->addRadio( "Select one", &choices);