[MonoDevelop] Stetic question

[ml]

Is there any documentation how to extend Widget set? 

Ok, creating new widget was obvious, but what I'm stuck with is howto:

- define new property editors.
- have public accessible property but not visible in Widget properties

I would really appreciate some pointers here. Or at least a confirmation
that docs don't exist yet, because I searched internet trough and trough
without success

thanks
ml