C++中添加自定義消息的響應 (BEGIN_MESSAGE_MAP ON_MESSAGE)

  1首先要在窗口類的cpp文件手動添加消息響應機制，

ON_MESSAGE(ID,Handler) 
LRESULT   Handler(WPARAM,LPARAM);//響應的函數

BEGIN_MESSAGE_MAP(CShellDlg, CDialog) //{{AFX_MSG_MAP(CShellDlg) ON_MESSAGE(WM_SENDOFFLINE, OnSendOffline) //自定義消息 ON_MESSAGE(WM_SWIPECARD, OnSwipeCard) //自定義消息 ON_MESSAGE(WM_MODEM, OnModem) ON_MESSAGE(WM_PINPAD, OnPinPad) ON_MESSAGE(WM_TRANSACTION, OnTransaction) ON_MESSAGE(WM_THREAD_ERROR, OnThreadError) ON_MESSAGE(WM_SENDRECALL, OnSendRecall) ON_MESSAGE(WM_CHECKTXN, OnOnCheckTxn) //自定義消息 ON_WM_TIMER() ON_WM_KEYDOWN() ON_WM_DESTROY() //}}AFX_MSG_MAP END_MESSAGE_MAP()

  2 其次在窗口類h文件添加如下代碼；

// Generated message map functions //{{AFX_MSG(CShellDlg) virtual BOOL OnInitDialog(); afx_msg void OnTimer(UINT nIDEvent); afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags); afx_msg void OnDestroy(); afx_msg LONG OnSwipeCard(WPARAM wParam,LPARAM lParam); afx_msg LONG OnModem(WPARAM wParam, LPARAM lParam); afx_msg LONG OnPinPad(WPARAM wParam, LPARAM lParam); afx_msg LONG OnTransaction(WPARAM wParam, LPARAM lParam); afx_msg LONG OnThreadError(WPARAM wParam, LPARAM lParam); afx_msg LONG OnSendOffline(WPARAM wParam, LPARAM lParam); afx_msg LONG OnSendRecall(WPARAM wParam, LPARAM lParam); afx_msg LONG OnOnCheckTxn(WPARAM wParam, LPARAM lParam); //}}AFX_MSG DECLARE_MESSAGE_MAP()

3 實現響應函數，

LONG XXXDlg::OnOnCheckTxn(WPARAM wParam, LPARAM lParam) { dwCurTranType =0; ..... //這部分添加自己響應代碼 return 0; }

4 最後在自己需要的地方調用自己定義的消息（消息響應）

MyMsg(pDlg->m_hWnd, WM_CHECKTXN, (WPARAM)TXN_DOWNTYPE, 0);

//消息轉發 BOOL MyMsg(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { BOOL bRet = FALSE; bRet = PostMessage(hWnd, uMsg, wParam, lParam); return bRet; }

這樣就全部OK了，等有時間把測試代碼在整理出來