I think I must have missed something obvious here, but how do you send a notification from a control to the parent window/dialog?

I have written a subclass of CButton, but it needs to send a message to the parent window. Is it possible to set this up in such a way that MFC (and, if possible, ClassWizard) can handle the message in a similar way to how BN_CLICKED is turned into a call to On??Clicked()?