| 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( UINT, LONG ); |
| ON_REGISTERED_THREAD_MESSAGE( <nMessageVariable>, <memberFxn> ) | afx_msg void memberFxn( UINT, LONG ); |