lpadapter=PacketOpenAdapter("{DA9CCA96-3199-4DC7-9241-CCC3921C8DA7}");    if(!lpadapter || (lpadapter->hFile==INVALID_HANDLE_VALUE))
    {
        printf("PacketOpenAdapter Error: %d\n",GetLastError());
        return -1;
    }

   网络适配器打不开是什么原因??
返回错误PacketOpenAdapter Error:20