一个管道的应用例子

#define EXECDOSCMD "ping www.sohu.com" //可以换成你的命令
BOOL ExecDosCmd()
{
 SECURITY_ATTRIBUTES sa;
 HANDLE hRead,hWrite;
  
 sa.nLength = sizeof(SECURITY_ATTRIBUTES);
 sa.lpSecurityDescriptor = NULL;
 sa.bInheritHandle = TRUE;
 if (!CreatePipe(&hRead,&hWrite,&sa,0))
 {
  return FALSE;
 }
 
 STARTUPINFO si;
 PROCESS_INFORMATION pi;
 si.cb = sizeof(STARTUPINFO);
 GetStartupInfo(&si);
 si.hStdError = hWrite;
 si.hStdOutput = hWrite;
 si.wShowWindow = SW_HIDE;
 si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
         //关键步骤，CreateProcess函数参数意义请查阅MSDN
 if (!CreateProcess(NULL, EXECDOSCMD
  ,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi))
 {  
  return FALSE;
 }
 CloseHandle(hWrite);
 
 char buffer[4096] = {0};
 DWORD bytesRead;
 ofstream ofst;
 ofst.open("cmd.txt");
 while (true)
 {
  if (ReadFile(hRead,buffer,4095,&bytesRead,NULL) == NULL)
   break;
  //buffer中就是执行的结果，可以保存到文本，也可以直接输出
        //printf(buffer);
  ofst<<buffer;
  Sleep(200);
 }  
 ofst.close();
    return TRUE;
}