借助开源文件：Com_class.h

程序实例：http://pan.baidu.com/s/1qWHUQmS

 

使用步骤：  1.包含Com_class.h头文件   

                2.

#include "Com_class.h"class CComDlgDlg : public CDialog{// Constructionpublic:	LRESULT On_Receive(WPARAM wp, LPARAM lp);	_thread_com com2;	CComDlgDlg(CWnd* pParent = NULL);	// standard constructor// Dialog Data	//{
    {AFX_DATA(CComDlgDlg)	enum { IDD = IDD_COMDLG_DIALOG };	CString	m_e;	//}}AFX_DATA	// ClassWizard generated virtual function overrides	//{
    {AFX_VIRTUAL(CComDlgDlg)	protected:	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support	//}}AFX_VIRTUAL// Implementationprotected:	HICON m_hIcon;	// Generated message map functions	//{
    {AFX_MSG(CComDlgDlg)	virtual BOOL OnInitDialog();	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);	afx_msg void OnPaint();	afx_msg HCURSOR OnQueryDragIcon();	virtual void OnOK();	afx_msg void OnButton1();	afx_msg void OnButton2();	afx_msg void OnButton3();	//}}AFX_MSG	DECLARE_MESSAGE_MAP()};//{
    {AFX_INSERT_LOCATION}}// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_COMDLGDLG_H__75BDFED3_C096_4C40_AB56_E631ECD7434D__INCLUDED_)

　　3.添加消息映射

BEGIN_MESSAGE_MAP(CComDlgDlg, CDialog)    //{
    {AFX_MSG_MAP(CComDlgDlg)    ON_WM_SYSCOMMAND()    ON_WM_PAINT()    ON_WM_QUERYDRAGICON()    ON_BN_CLICKED(IDC_BUTTON1, OnButton1)    ON_BN_CLICKED(IDC_BUTTON2, OnButton2)    ON_BN_CLICKED(IDC_BUTTON3, OnButton3)    //}}AFX_MSG_MAP    ON_MESSAGE(ON_COM_RECEIVE, On_Receive)END_MESSAGE_MAP()

4.添加重载函数

LRESULT CComDlgDlg::On_Receive(WPARAM wp, LPARAM lp){    int len;    char str[100];    len = com2.read(str, 100);    if(len > 0)    {        char com_str[10];        strcpy(com_str, "COM");        ltoa((long)wp, com_str + 3, 10); //    WPARAM 保存端口号        m_e += com_str;        m_e += " : ";        m_e += str;        m_e += "\r\n";        UpdateData(false);    }        return 0;}

5.打开串口

void CComDlgDlg::OnButton1() {    if(!com2.open(5))//默认是9600 调用不同的OPEN可以调节波特率        MessageBox("open fail", "COM5", MB_OK);    else        com2.set_hwnd(m_hWnd);    }

6.发送数据

void CComDlgDlg::OnButton3() {    char  buff[100];    // TODO: Add your control notification handler code here//    com2<<1;    buff[0]=0x55;    com2.write(buff,1);}

7.关闭串口

void CComDlgDlg::OnButton2() {    com2.close();}