MFC消息机制谁帮我做个注释，请逐行注释。不要回复无关内容

Question

  class CMsgFrame : public CFrameWnd  
{
  private: 
        static const AFX_MSGMAP_ENTRY _messageEntries[]; 
    protected: 
        static AFX_DATA const AFX_MSGMAP messageMap; 
        static const AFX_MSGMAP* PASCAL _GetBaseMessageMap(); 
        virtual const AFX_MSGMAP* GetMessageMap() const; 
    }
const AFX_MSGMAP* PASCAL CMsgFrame::_GetBaseMessageMap() 
    { 
        return &CFrameWnd::messageMap; 
    } 

    const AFX_MSGMAP* CMsgFrame::GetMessageMap() const 
    { 
            return &CMsgFrame::messageMap; 
    } 

    AFX_COMDAT AFX_DATADEF const AFX_MSGMAP CMsgFrame::messageMap = 
    {       
        &CMsgFrame::_GetBaseMessageMap, 
        &CMsgFrame::_messageEntries[0] 
    }; 

    AFX_COMDAT const AFX_MSGMAP_ENTRY CMsgFrame::_messageEntries[] = 
    {
        { WM_PAINT, 0, 0, 0, AfxSig_lwl,(AFX_PMSG)(AFX_PMSGW)(LRESULT (AFX_MSG_CALL CWnd::*)(WPARAM, LPARAM))&OnPaint },
        {0, 0, 0, 0, AfxSig_end, (AFX_PMSG)0 } 
    }; 

Answer 1

用宏包装了很多代码，实现消息映射。具体可以看深入浅出mfc。上面将的很清楚