qrverona wrote: I have a problem while accessing to the "IPAddress" data managed by the Win32_NetworkAdapterConfiguration WMI class. I would employ something like:
HRESULT hr;
_variant_t v;
ULONG ulReturned;
DWORD dwAuthLevel;
IWbemLocator *pLocator;
IWbemServices *pService = NULL;
IEnumWbemClassObject *pEnum = NULL;
IWbemClassObject *pClass;
hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *) &pLocator);
if (S_OK == hr)
{
hr = pLocator->ConnectServer(_bstr_t(L"root\\cimv2"), NULL, NULL, NULL, NULL, 0, NULL, &pService);
if (WBEM_S_NO_ERROR == hr)
{
hr = CoQueryProxyBlanket(pService, NULL, NULL, NULL, &dwAuthLevel, NULL, NULL, NULL);
hr = CoSetProxyBlanket(pService,
RPC_C_AUTHN_DEFAULT,
RPC_C_AUTHZ_NONE,
NULL,
dwAuthLevel,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE);
hr = pService->CreateInstanceEnum(\_bstr\_t("Win32\_NetworkAdapterConfiguration"),
WBEM\_FLAG\_RETURN\_IMMEDIATELY | WBEM\_FLAG\_FORWARD\_ONLY,
NULL,
&pEnum);
if (WBEM\_S\_NO\_ERROR == hr)
{
do
{
hr = pEnum->Next(WBEM\_INFINITE, 1, &pClass, &ulReturned);
if (WBEM\_S\_NO\_ERROR == hr)
{
hr = pClass->Get(L"IPAddress", 0, &v, NULL, NULL);
if (v.vt != VT\_NULL)
...
pClass->Release();
}
} while (WBEM\_S\_NO\_ERROR == hr);
}
}
}
"One must learn from the bite of the fire to leave it alone." - Native American Proverb
