struct AFX_MSGMAP_ENTRY { UINT nMessage; // windows message UINT nCode; // control code or WM_NOTIFY code UINT nID; // control ID (or 0 for windows messages) UINT nLastID; // used for entries specifying a range of control id's UINT nSig; // signature type (action) or pointer to message # AFX_PMSG pfn; // routine to call (or special value) };