How would you add the extender provider to a mmBusinessForm, mmMaintenanceForm form subclass so that a forms derviving from that have the DirtyChecker?

Thanks!

[edited]
Or am I confusing the extender provider model and inheritance in a non-workable way?

Ideally, I'd just drop the DirtyChecker on mmMaintenanceForm (or a custom subclass), compile, and derived forms would now implement the extender provider... I don't understand the VS designer enough to make this kind of thing work yet...

Basically, I want to have the dirty checking code (to activate/deactivate Save/Cancel/New/Delete controls) in the base form, not to have basically duplicated code in each form.

This isn't as sophisticated, assumes typical input controls are dirty-checked unless unregistered. Easier to integrate into my subclass of mmMaintenanceForm, I'm thinking.
http://community.rampgroup.com/blogfiles/dirtyforms/FormHelper.txt