InfoPath Dev

Is there a way to have the submitted form read-only? For example, you fill out the form and submit it, I receive the form but can't make any changes to the form within the email/attachment.

I'd have a field in the form's data source for "status" and set it to submitted when the form is submitted. Then I'd add logic to the form's loading rules to switch to a read only view if status = submitted.

How do I do that? I'm not seeing an option to choose the button (I see where I can select fields/groups but not the 'button').