匿名Pipe

int CallProcess(wstring applicationName, wstring command, string* output, DWORD* errorLevel)
{
 HANDLE hReadPipe;  
 HANDLE hWritePipe;  

 SECURITY_ATTRIBUTES sat;  
 sat.nLength = sizeof(SECURITY_ATTRIBUTES);  
 sat.bInheritHandle = true;  
 sat.lpSecurityDescriptor = NULL;  
 if( !CreatePipe(&hReadPipe, &hWritePipe, &sat, NULL) )  
 {
  cout << "CreatePipe fail" << endl;
  return -1;
 }

 PROCESS_INFORMATION pinfo;
 STARTUPINFO startupinfo;
 startupinfo.cb = sizeof(STARTUPINFO);  
 GetStartupInfo(&startupinfo);  
 startupinfo.hStdOutput = hWritePipe;  
 startupinfo.hStdError = hWritePipe;  
 startupinfo.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;  
 startupinfo.wShowWindow = SW_HIDE;

 wstring orgCommand;
 orgCommand.append(L"\"").append( applicationName).append(L"\" ").append(command);

 if(!CreateProcess(NULL, (WCHAR *)orgCommand.c_str() , NULL, NULL, TRUE, NULL, NULL, NULL, &startupinfo, &pinfo))  
 {  
  cout << "Call Process fail" << endl;
  return -1;
 }

 BOOL processState = GetExitCodeProcess(pinfo.hProcess, errorLevel);

 BYTE buffer[1024];
 DWORD byteRead;

 while(true)  
 {  
  DWORD osize, exitCode;
  DWORD size =GetFileSize(hReadPipe,  &osize);
  GetExitCodeProcess( pinfo.hProcess, &exitCode);

  if (0!=size)
  {
   ReadFile(hReadPipe,buffer,1024,&byteRead,NULL);
   string temp((char*)buffer,byteRead);
   *output += temp;
  }
  else if(0==size && STILL_ACTIVE ==exitCode )
  {
   break;
  }
  Sleep(3000);
 }
 CloseHandle(hReadPipe);
 CloseHandle(hWritePipe);
 return 0;
}