I'm sorry to be little bit hasty but I really need this information. Without proper documentation it's nearly impossible to develope custom components that descend from existing UniGUI components.
I've been searching net, but so far I haven't found enough information about this subject. For example, if I create TUniLabel descendant, there isn't public property canvas to be used. Also, I don't know what is proper way to create necessary JavaScript code for component. And no, links to pure ExtJS JavaScript examples aren't going to help much.
Even though UniGUI is very good in itself, this problem and lack of information may very well be deal breaker for us.