一个管道的应用例子

来源：互联网发布：c高级编程第8版中文pdf 编辑：程序博客网时间：2024/05/09 05:25

#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;
}