实现CMD 管道源码

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CString strCmd="adb get-serialno";
SECURITY_ATTRIBUTES sa;
HANDLE hRead,hWrite;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
if (!CreatePipe(&hRead,&hWrite,&sa,0)) {
  MessageBox("Error On CreatePipe()");
  return;
}
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;
if (!CreateProcess(NULL,strCmd.GetBuffer(strCmd.GetLength())
  ,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi)) {
  MessageBox("Error on CreateProcess()");
  return;
}

if(WaitForSingleObject(pi.hProcess, INFINITE)==WAIT_FAILED)
{
  MessageBox("Failed!");
  return ;
}
CloseHandle(hWrite);

char buffer[4096] ={0} ;
DWORD bytesRead;
CString strResult="";
m_Edit1="";
m_Ed.SetWindowText("");
while(1)
{
  if(ReadFile(hRead,buffer,4096,&bytesRead,NULL) != NULL)
  {
   strResult += buffer;
   m_Edit1+=buffer;
   UpdateData(FALSE);
  }
  else
  {
   break;
  }
}