Kevin, thanks for the response.
I think I was not quite complete (or perhaps not completely clear) in my request for help.
Your suggestion probably works if I am attempting to add this behavior to the end-user form (which is written in VB). And at that point it's pretty clear / obvious.
However, I want to add this behavior in the mmButtonCancel_Click method of the framework because we want all our derived forms to inherit the behavior. The problem I'm having is that the generally obvious options such as setfocus don't appear to be available at all in this context.

To be clear:
1) the Cancel button on the revised mmMaintenanceForm is inherited by a number of our forms and we want the behavior to be consistent on all of those forms;
2) when the user clicks on the Cancel button, we want undo data changes and return to the first tab of the tab control on the end user form;
3) I'm trying to implement this behavior in mmButtonCancel_Click.

I've spent some time looking at the options for trying to navigate up the control hierarchy and get to the place I want, but am not finding a path that will get me there.

Any further suggestions? (anyone?)

Thanks,
Frank