关于ON_MESSAGE的问题

[llm308]

看过＜＜深入浅出MFC＞＞后对ON_COMMAND有了一定的了解，但最近看其它书里写可以自己添加消息用ON_MESSAGE(WM_某某,处理函数),不知ON_MESSAGE在MFC中是如何定义的，如有知道的，请告诉我，谢谢大家！！

[truestone]

// example for ON_MESSAGE
#define WM_MYMESSAGE (WM_USER + 1)
BEGIN_MESSAGE_MAP( CMyWnd, CMyParentWndClass )
//{{AFX_MSG_MAP( CMyWnd
ON_MESSAGE( WM_MYMESSAGE, OnMyMessage )
// ... Possibly more entries to handle additional messages
//}}AFX_MSG_MAP
END_MESSAGE_MAP( )

[kimryo]

关键是函数的行参要对得上。

[llm308]

谢谢上面的大哥，不过我想问的是MFC是如何定义宏ON_MESSAGE的不是如何使用.

[rovoboy]

/////////////////////////////////////////////////////////////////////////////
// User extensions for message map entries

// for Windows messages
#define ON_MESSAGE(message, memberFxn) \
{ message, 0, 0, 0, AfxSig_lwl, \
(AFX_PMSG)(AFX_PMSGW)(LRESULT (AFX_MSG_CALL CWnd::*)(WPARAM, LPARAM))&memberFxn },

// for Registered Windows messages
#define ON_REGISTERED_MESSAGE(nMessageVariable, memberFxn) \
{ 0xC000, 0, 0, 0, (UINT)(UINT*)(&nMessageVariable), \
/*implied 'AfxSig_lwl'*/ \
(AFX_PMSG)(AFX_PMSGW)(LRESULT (AFX_MSG_CALL CWnd::*)(WPARAM, LPARAM))&memberFxn },

// for Thread messages
#define ON_THREAD_MESSAGE(message, memberFxn) \
{ message, 0, 0, 0, AfxSig_vwl, \
(AFX_PMSG)(AFX_PMSGT)(void (AFX_MSG_CALL CWinThread::*)(WPARAM, LPARAM))&memberFxn },

// for Registered Windows messages
#define ON_REGISTERED_THREAD_MESSAGE(nMessageVariable, memberFxn) \
{ 0xC000, 0, 0, 0, (UINT)(UINT*)(&nMessageVariable), \
/*implied 'AfxSig_vwl'*/ \
(AFX_PMSG)(AFX_PMSGT)(void (AFX_MSG_CALL CWinThread::*)(WPARAM, LPARAM))&memberFxn },

/////////////////////////////////////////////////////////////////////////////

[yinzhe]

如上

[feng_sky]

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