>But one of my points was, that I have a form that uses a class from a lib that is not in that list, yet it still seems to run fine, so that makes me wonder why the list is needed if a form can find his classes anyway. As I said, I suspect it has to do with making it easier to code a PRG by just saying CreateObject('someclass'), and since the class lib is set already it can find it. I think that is correct.

Matt,

Perhaps I have a problem explaining. You do not need SET CLASSLIB statement if you're using a visual class on the form (added in design time). Only if you want to add a class in run-time with CREATEOBJECT() function (or AddObject method) you would need SET CLASSLIB. In fact, that's the only purpose of having this statement.

You don't need it at all, if you're using NEWOBJECT() function / method in your code.