出错，怎么更正？

[jinhaiou]

protected:
HICON m_hIcon;
BOOL m_bIsPlay;
BOOL m_bIsPause;
MCIDEVICEID m_MCIDeviceID;
// Generated message map functions
//{{AFX_MSG(CMvcDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnButtonOpen();
afx_msg void OnButtonPause();
afx_msg void OnButtonPlay();
afx_msg void OnButtonStop();
afx_msg void OnButtonStrPlay();
virtual void OnOK();
//}}AFX_MSG
afx_msg LRESULT OnMciNotify(WPARAM wParam,LPARAM IParam);
DECLARE_MESSAGE_MAP()
};


--------------------Configuration: mvc - Win32 Debug--------------------
Compiling...
StdAfx.cpp
Compiling...
mvc.cpp
mvcDlg.cpp
Generating Code...
Linking...
mvcDlg.obj : error LNK2001: unresolved external symbol "protected: long __thiscall CMvcDlg::OnMciNotify(unsigned int,long)" (?OnMciNotify@CMvcDlg@@IAEJIJ@Z)
Debug/mvc.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

mvc.exe - 2 error(s), 0 warning(s)

[快乐鹦鹉]

afx_msg LRESULT OnMciNotify(WPARAM wParam,LPARAM IParam);
不能仅在头文件中申明啊，cpp中也要有消息映射啊。
ON_MESSAGE(WM_***,OnMciNotify)

[seasol]

可能是cpp文件中没有实现OnMciNotify

===========================================
　赠人以言，重于珠玉，伤人以言，重于剑戟。——孙子
　CSDN助手　签名走马灯

[jinhaiou]

BEGIN_MESSAGE_MAP(CMvcDlg, CDialog)
//{{AFX_MSG_MAP(CMvcDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
ON_BN_CLICKED(IDC_BUTTON_PAUSE, OnButtonPause)
ON_BN_CLICKED(IDC_BUTTON_PLAY, OnButtonPlay)
ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop)
ON_BN_CLICKED(IDC_BUTTON_STR_PLAY, OnButtonStrPlay)
//}}AFX_MSG_MAP
ON_MESSAGE(MM_MCINOTIFY,OnMciNotify)
END_MESSAGE_MAP()

[Kudeet]

LRESULT CMvcDlg::OnMciNotify(WPARAM wParam,LPARAM IParam)
{
return 0;
}