WMi classes

[preetsvarma]

Hi

please can some1 clear ths for me

i m developing a c++ code to enumerate the SAN elements

so i ws able to extract variables from the MSFC_FCAdapterHBAAttributes class
but whn i used MSFC_FibrePortHBAAttributes class thrs a sub class in it for the Attributes,,,
can anyone explain how do i retrieve
MSFC_HBAPortAttributesResults Attributes;

Thx

[weaknessforcats]

MSFC_HBAPortAttributesResults is just a struct. The members are publicly available. Read this.

[preetsvarma]

MSFC_HBAPortAttributesResults is just a struct. The members are publicly available. Read this.

u dint get me... just check ths below

do {
hr_next = pIEnumWbemClassObject->Next(
WBEM_INFINITE, // LONG lTimeOut,
1, // ULONG uCount,
&pIWbemClassObjectInst, // IWbemClassObject** ppObjects,
&ulCount // ULONG* puReturned
);
if (WBEM_S_NO_ERROR == hr_next) {

// Extract the MfgDomain parameter.
hr = pIWbemClassObjectInst->Get(
PROP_NAME_MfgDomain, // LPCWSTR wszName,
0, // LONG lFlags,
&vtMfgDomain, // VARIANT* pVal,
NULL, // CIMTYPE* pvtType,
NULL // LONG* plFlavor
);

whr in


hr_next n hr are of type HRESULT
pIEnumWbemClassObject is of type IEnumWbemClassObject

the above code successfully extracted the MfgDomain parameter from the struct
MSFC_FCAdapterHBAAttributes

but in the same way m unable to get the parameters from MSFC_HBAPortAttributesResults...


so pls tell me hw to do tht

thx

[weaknessforcats]

The MSFC_FCAdapterHBAAttributes is a class used by the WMI provider.

The MSFC_HBAPortAttributesResults is a class used by the WMI client.

The IWbemClassObject::Get() that you are using is the WMI providers derioved class. It can only return values in a VARIANT.

If you are the client, then you would have created rown MSFC_HBAPortAttributesResults objects. But since these do not derive from IWbemClassObject, you can't use IWbemClassObject::Get() with MSFC_HBAPortAttributesResults objects.

[preetsvarma]

The MSFC_FCAdapterHBAAttributes is a class used by the WMI provider.

The MSFC_HBAPortAttributesResults is a class used by the WMI client.

The IWbemClassObject::Get() that you are using is the WMI providers derioved class. It can only return values in a VARIANT.

If you are the client, then you would have created rown MSFC_HBAPortAttributesResults objects. But since these do not derive from IWbemClassObject, you can't use IWbemClassObject::Get() with MSFC_HBAPortAttributesResults objects.

hey thanks for clearing tht

Could u please tell how can i make use of tht struct MSFC_HBAPortAttributesResults ... i mean the C++ code for it

[weaknessforcats]

Could u please tell how can i make use of tht struct MSFC_HBAPortAttributesResults ... i mean the C++ code for it

I am not a WMI expert. So I would do what I am telling you to do. Namely, research MSDN. Use Google. There's a lot of material on WMI out there.