WMI: Call to Put(..) fails with mismatch

[BaluT]

Hi,

I am trying to use the WMI removeResourceSetting() method of Msvm_VirtualSystemManagementService class to remove the attached disk. To use this method, the first parameter is array of references to instances of the CIM_ResourceAllocationSettingData class.

Here is snippet of code:

saBounds.cElements = 1;
saBounds.lLbound = 0;

psaTokens = SafeArrayCreate(VT_UNKNOWN, 1, &saBounds);

//pinstToken is CComPtr<IWbemClassObject>
//pinstToken is obtained from the query to "Select * from //Mvsm_ResourceAllocationSettingData where..."

pinstToken->QueryInterface(IID_IUnknown, (void**)&pUnknown);
SafeArrayPutElement(psaTokens, &idx, pUnknown);

CComVariant var;
var.vt = VT_ARRAY | VT_UNKNOWN | VT_BYREF;
var.parray = psaTokens;

if we pass on the var parameter to wbem put(string,0,var,0), the method always fails with type mismatch.

What should be the correct variant type that needs to be passed ?
Thanks in adv.

[BaluT]

Tried with the following but no luck. Any suggestion.

IUnknown *refUnk[1];
refUnk[0] = pUnknown;

SAFEARRAY sfArr;
sfArr.cDims = 1;
sfArr.cbElements = 1;
sfArr.fFeatures = FADF_UNKNOWN | FADF_HAVEIID;
sfArr.pvData = refUnk;
sfArr.rgsabound[0] = saBounds;
sfArr.cLocks = 0;


VariantInit (&avTokens);
V_VT(&avTokens) = VT_ARRAY | VT_UNKNOWN | VT_BYREF;
avTokens.parray = &sfArr;