bool IsParentProcessId(DWORD process_id)
{
  PROCESSENTRY32 pe32;

  pe32.dwSize = sizeof(PROCESSENTRY32);

  //获取进程快照
  HANDLE hProcessSnap = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
  if (hProcessSnap == INVALID_HANDLE_VALUE)
  {
    return false;
  }

  //遍历进程快照，轮流显示每个进程的信息
  BOOL bMore = ::Process32First(hProcessSnap, &pe32);
  while (bMore)
  {
    if (GetCurrentProcessId() == pe32.th32ProcessID)
    {
      if (pe32.th32ParentProcessID == process_id) //为父进程时
      {
        return true;
      }
    }
    bMore = ::Process32Next(hProcessSnap, &pe32);
  }

  //不要忘记清除掉snapshot对象
  ::CloseHandle(hProcessSnap);

  return false;
}