CWinApp::Unregister
Unregisters all files registered by the application object.
virtual BOOL Unregister( );
Return Value
Nonzero on success; otherwise 0.
Remarks
The Unregister function undoes the registration performed by the application object and the Register function. Normally, both functions are called implicitly by MFC and therefore will not appear in your code.
Override this function to perform custom unregistration steps.
Requirements
Header: afxwin.h