>When I say 'interface', I don't mean the UI implementation, I mean the programmatic references to it - CLSID, ProgID, properties, methods, and their parameters. If you change any interface element, the CLSID changes, so you don't connect to it the same way. If the CLSID doesn't change and some other aspect does change, and you've used early binding, which resolves method and properyty interfaces at compile time and builds a reference table, rather than politely asking through the IDispatch how to resolve things (slower, but results in greater compatibility and portability), things break if the new control's not quite exactly identical to how it was at compilation.

I guess I meant that as well using the word interface. As far as early and late binding is concerned, I am just dropping a control on a form or adding it in code. I have no idea what binding I'm using and unless I have no choice, I'd rather not think about it. In my opinion this should be transparent, i.e. the most logical option should be automatic. Anyway, what I'm just trying to say is that I have only a faint notion about the differences between early and late binding and now idea how to 'politely ask through IDispatch'. Maybe you can clarify this a bit? I will have another at hte help files as well.


Auke