User-Defined Handlers

The following map entries correspond to the function prototypes.

Map entry	Function prototype
ON_MESSAGE( <message>, <memberFxn> )	afx_msg LRESULT memberFxn( WPARAM, LPARAM );
ON_REGISTERED_MESSAGE( <nMessageVariable>, <memberFxn> )	afx_msg LRESULT memberFxn( WPARAM, LPARAM );
ON_THREAD_MESSAGE( <message>, <memberFxn> )	afx_msg void memberFxn( WPARAM, LPARAM );
ON_REGISTERED_THREAD_MESSAGE( <nMessageVariable>, <memberFxn> )	afx_msg void memberFxn( WPARAM, LPARAM );

See also

Message Maps
Handlers for WM_ Messages