User-Defined Handlers

Note

The Microsoft Foundation Classes (MFC) library continues to be supported. However, we're no longer adding features or updating the documentation.

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