Capture close and cancel of email window

[CandiceS]

I created a C#.NET C3PO using the C3PO wizard.
I can easily change the send, open, forward, delete commands, but I also need to use the cancel and close of the email window.
Are there any predefined commands for these?
I've been looking through the C3PO files that were generated and they don't contain any sort of close or cancel command. Is there a way of doing this without using the Token 'EventNoticeRegister'.