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：

     UpdateData(TRUE);

     //创建一个管道，用于接收命令执行结果
     SECURITY_ATTRIBUTES sa;
     ZeroMemory(&sa, sizeof(sa));
     sa.nLength = sizeof(SECURITY_ATTRIBUTES);
     sa.bInheritHandle = TRUE;
     sa.lpSecurityDescriptor = NULL;
     HANDLE hRead, hWrite;
     if (!CreatePipe(&hRead, &hWrite, &sa, ))
     {
         AfxMessageBox(_T("创建管道出错。"));
         return;
     }

     //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
     STARTUPINFO si;
     ZeroMemory(&si, sizeof(si));
     si.cb = sizeof(STARTUPINFO);
     GetStartupInfo(&si);
     si.hStdError = hWrite;
     si.hStdOutput = hWrite;
     si.wShowWindow = SW_HIDE;
     si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;

     PROCESS_INFORMATION pi;
     CString strCommand;
     strCommand.Format(_T("cmd.exe /c %s"), m_strCommand);
     BOOL res = CreateProcess(NULL, strCommand.GetBuffer(), NULL, NULL, TRUE, NULL, NULL, NULL, &si, &pi);
     if (!res)
     {
         AfxMessageBox(_T("创建进程出错。"));
         return;
     }
     CloseHandle(hWrite);

     //从管道中读取已写入的数据，并显示出来
     CString strTemp;
     TCHAR szBuff[] = {  };
     DWORD dwRead = ;
     m_strResult = _T("");
     while (true)
     {
         if (!ReadFile(hRead, szBuff, , &dwRead, NULL))
         {
             break;
         }
         szBuff[dwRead] = _T('\0');
         strTemp.Format(_T("%s"), szBuff);
         m_strResult += strTemp;
     }
     UpdateData(FALSE);

下载地址：http://pan.baidu.com/s/1gdIEoJT