wireless signalstrength

[Christian Verdani]

Hello,

i want to query the signal strength of the nearby accesspoints on my
notebook.
So far, i found out that i can query information via the WMI.
Can anyone tell me how to get the signal strength out of the result of the
query?
I am working with visual c++.


here is the code snippet i have tried with:

hres = pSvc->ExecQuery(
bstr_t("WQL"), bstr_t("SELECT * FROM
MSNdis_80211_ReceivedSignalStrength Where active=true"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL,
&pEnumerator);


IWbemClassObject *pclsObj;
ULONG uReturn = 0;

while (pEnumerator)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj,
&uReturn); //WBEM_INFINITE

if(0 == uReturn)
{
cout << "Need to BREAK!" << endl;
break;
}

VARIANT vtProp;
VariantInit(&vtProp);

// Get the value of the Name property
hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);
// wcout << " OS Name : " << vtProp.bstrVal << endl;

VariantClear(&vtProp);
}




can someone help me?

sincerly,
Cristian

 

[Pavel A.]

MSNdis_80211_ReceivedSignalStrength returns RSSI of only
one AP you are currently associated with (or none if you're not connected).
What you need, is the scan list. It contains information on all surrounding APs.
Please do read about 802_11 OIDs in the DDK - this is the source of all wi-fi related wmi data
(unlike WMI info, it is easy to find in the latest DDK in MSDN)
--PA

 

[Dooma]

Multiple signal strengths

did you find a way to get signal strengths from multiple access points?

 

[mirzarezaee]

Dear Dooma,

Did you find the answer of your question? I am looking for the answer too.