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User-Defined Handlers

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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 );