这是 《Visual C++Turbo C串口通信编程实践》的配套代码

				// ModemCommDlg.h : header file
				//
				#include "mscomm.h"/////////added 
				
				#if !defined(AFX_MODEMCOMMDLG_H__548C9AA6_884C_43B0_9505_BC2A41328CB3__INCLUDED_)
				#define AFX_MODEMCOMMDLG_H__548C9AA6_884C_43B0_9505_BC2A41328CB3__INCLUDED_
				
				#if _MSC_VER > 1000
				#pragma once
				#endif // _MSC_VER > 1000
				
				/////////////////////////////////////////////////////////////////////////////
				// CModemCommDlg dialog
				
				class CModemCommDlg : public CDialog
				{
				// Construction
				public:
					CModemCommDlg(CWnd* pParent = NULL);	// standard constructor
				
				    //added begin
					void OpenComm(int number);//
					void SendString(CString m_strSend);
				
					CMSComm	m_ctrlComm;
					BOOL bOpen;//added end
				// Dialog Data
					//{{AFX_DATA(CModemCommDlg)
					enum { IDD = IDD_MODEMCOMM_DIALOG };
					CButton	m_ctrlDial;
					CString	m_ReceiveData;
					CString	m_SendData;
					CString	m_TelphoneNo;
					int		m_NumCom;
					//}}AFX_DATA
				
					// ClassWizard generated virtual function overrides
					//{{AFX_VIRTUAL(CModemCommDlg)
					protected:
					virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
					//}}AFX_VIRTUAL
				
				// Implementation
				protected:
					HICON m_hIcon;
				
					// Generated message map functions
					//{{AFX_MSG(CModemCommDlg)
					virtual BOOL OnInitDialog();
					afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
					afx_msg void OnPaint();
					afx_msg HCURSOR OnQueryDragIcon();
					afx_msg void OnComm();
					afx_msg void OnRadioCom1();
					afx_msg void OnRadioCom2();
					afx_msg void OnDial();
					afx_msg void OnSend();
					DECLARE_EVENTSINK_MAP()
					//}}AFX_MSG
					DECLARE_MESSAGE_MAP()
				};
				
				//{{AFX_INSERT_LOCATION}}
				// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
				
				#endif // !defined(AFX_MODEMCOMMDLG_H__548C9AA6_884C_43B0_9505_BC2A41328CB3__INCLUDED_)