mfc深入浅出 frame7
mfc深入浅出
FRAME7


#define ON_COMMAND(id, memberFxn) \
{ WM_COMMAND, 0, (WORD)id, (WORD)id, AfxSig_vv, (AFX_PMSG)memberFxn },


#define END_MESSAGE_MAP() \
{ 0, 0, 0, 0, AfxSig_end, (AFX_PMSG)0 } \
};
/*其中AFX_PMSG是函数指针 是否是在END_MESSAGE_MAP() 将其置零？
那么其他参数的意思是？




[解决办法]
置零是为了标示消息隐射表结束

{ WM_COMMAND, 0, (WORD)id, (WORD)id, AfxSig_vv, (AFX_PMSG)memberFxn },

参数什么意思看这个


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_PTR nSig; // signature type (action) or pointer to message #
AFX_PMSG pfn; // routine to call (or special value)
};