管道Demo

使用管道实现读取DOS命令结果，界面如下：

主要代码如下：

 1     UpdateData(TRUE);

 2 

 3     //创建一个管道，用于接收命令执行结果

 4     SECURITY_ATTRIBUTES sa;

 5     ZeroMemory(&sa, sizeof(sa));

 6     sa.nLength = sizeof(SECURITY_ATTRIBUTES);

 7     sa.bInheritHandle = TRUE;

 8     sa.lpSecurityDescriptor = NULL;

 9     HANDLE hRead, hWrite;

10     if (!CreatePipe(&hRead, &hWrite, &sa, 0))

11     {

12         AfxMessageBox(_T("创建管道出错。"));

13         return;

14     }

15 

16     //创建一个没有DOS命令框的、隐藏窗口的进程来执行用户输入的命令

17     STARTUPINFO si;

18     ZeroMemory(&si, sizeof(si));

19     si.cb = sizeof(STARTUPINFO);

20     GetStartupInfo(&si);

21     si.hStdError = hWrite;

22     si.hStdOutput = hWrite;

23     si.wShowWindow = SW_HIDE;

24     si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;

25 

26     PROCESS_INFORMATION pi;

27     CString strCommand;

28     strCommand.Format(_T("cmd.exe /c %s"), m_strCommand);

29     BOOL res = CreateProcess(NULL, strCommand.GetBuffer(0), NULL, NULL, TRUE, NULL, NULL, NULL, &si, &pi);

30     if (!res)

31     {

32         AfxMessageBox(_T("创建进程出错。"));

33         return;

34     }

35     CloseHandle(hWrite);

36 

37     //从管道中读取已写入的数据，并显示出来

38     CString strTemp;

39     TCHAR szBuff[4096] = { 0 };

40     DWORD dwRead = 0;

41     m_strResult = _T("");

42     while (true)

43     {

44         if (!ReadFile(hRead, szBuff, 4095, &dwRead, NULL))

45         {

46             break;

47         }

48         szBuff[dwRead] = _T('\0');

49         strTemp.Format(_T("%s"), szBuff);

50         m_strResult += strTemp;

51     }

52     UpdateData(FALSE);

下载地址：http://pan.baidu.com/s/1gdIEoJT