I created a wizard-like application here called DBC2MDB. I do some of the things you are looking for, but, not with the goals of creating composite classes. However, there are some examples in the app of modifying control values and enabling/disabling and validation that might give you some ideas. Feel free to email me at digitalelite@earthlink.net for source code.

>Our application has several forms that use the 'wizard' approach to holding the user's hand and walking them through a data entry process (eg, Next, Previous, Cancel, and Finish buttons below a tabless pageframe). We have built one of them using standard form, button, and pageframe classes. Now we'd like to build a composite class - or some integrated classes - that would make the task of creating a wizard form simpler.
>
>We have three goals:
>1) Simplify navigation between pages (we might want to skip page 3 based on the data entered on page 2)
>2) Simplify validation (for instance, required fields now have to be enforced at the page level, not the form level)
>3) Make it relatively painless to create a form in the Form Designer (ie, don't do a lot of ADDOBJECTs at run-time)
>
>Has anyone created classes like these? We'd be interested in at least hearing your experiences, if not 'acquiring' your code.
>
>Thanks in advance!
>zahid