PacketOpenAdapter的有关问题，哪位高手能帮忙看看

PacketOpenAdapter的问题，谁能帮忙看看！

C/C++ code

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

C/C++ code

\\Device\\NPF_{CFE62223-0246-4698-96EF-FB8A58DF8C2E}