I won't claim to be an expert on this stuff-- I've only recently been studying this. But, from my understanding, if you have a tree of GUI elements, each of tho

I won't claim to be an expert on this stuff-- I've only recently been studying this. But, from my understanding, if you have a tree of GUI elements, each of those elements needs to have the same type, and that type needs to be known ahead of time. It's possible I don't understand your comment. Would you mind pointing me to some sample code or blog post or something?