OID_802_11_BSSID_LIST fail!

Hi all,

I would like to extract all the acess point's information discovered b
my D-link wifi card. When I run the source code, it returns

IOCTL BSSID_LIST failed : 122

In the source code lists below, the second DeviceIoControl fails!

Any experts here please point out my mistake, many thanks.

parts of my source code is :
************************************************** *****

VOID GetAPList(HANDLE Handle, AP_DATA **ppAP_data, long *plItems)
{
UCHAR QueryBuffer[4096];
PNDISPROT_QUERY_OID pQueryOid;
PNDISPROT_SET_OID pSetOid;
PNDIS_802_11_BSSID_LIST pBssid_List;
ULONG i = 0;
int j = 0;
DWORD dwBytesReturned;

pSetOid = (PNDISPROT_SET_OID) &QueryBuffer[0];
pSetOid->Oid = OID_802_11_BSSID_LIST_SCAN;

if (!DeviceIoControl(Handle,
IOCTL_NDISPROT_SET_OID_VALUE,
(LPVOID) &QueryBuffer[0],
sizeof(QueryBuffer),
(LPVOID) &QueryBuffer[0],
0,
&dwBytesReturned,
NULL))
{

DEBUGP(("IOCTL SET BSSID_LIST_SCAN failed: %d\n", GetLastError()));
}

pQueryOid = (PNDISPROT_QUERY_OID) &QueryBuffer[0];
pQueryOid->Oid = OID_802_11_BSSID_LIST;


if (DeviceIoControl(Handle, //<---This line fails to run!!!
IOCTL_NDISPROT_QUERY_OID_VALUE,
(LPVOID) &QueryBuffer[0],
sizeof(QueryBuffer),
(LPVOID) &QueryBuffer[0],
sizeof(QueryBuffer),
&dwBytesReturned,
NULL))
{
DEBUGP(("IOCTL BSSID_LIST succeeded\n"));
pBssid_List = (PNDIS_802_11_BSSID_LIST)pQueryOid->Data;
*plItems = pBssid_List->NumberOfItems;
*ppAP_data = (AP_DATA *) calloc(pBssid_List->NumberOfItems
sizeof(AP_DATA));

for ( i = 0; i < pBssid_List->NumberOfItems; i++ )
{
for ( j = 0; j < 6; j++ )
{
(*ppAP_data)[i].mac_addr[j]
(pBssid_List->Bssid[i]).MacAddress[j];
}
(*ppAP_data)[i].Rssi = (pBssid_List->Bssid[i]).Rssi;
}
}

else
{

DEBUGP(("IOCTL BSSID_LIST failed: %d\n", GetLastError()));
}



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