Hello All

Sorry about the OT.

I am trying to access the properties of Logical Disks using WMI. The
following is the code snippet in VB which works without any problems.

==============================================================================================================
Private Sub Form_Load()
Dim lWMILocator As WbemScripting.SWbemLocator
   Dim lWMIServices As WbemScripting.SWbemServices
   Dim lWMIObjectSet As WbemScripting.SWbemObjectSet
   Dim lWMIObject As WbemScripting.SWbemObject

Set lWMILocator = New WbemScripting.SWbemLocator
   Set lWMIServices = lWMILocator.ConnectServer(".", "ROOT\CIMV2")
   Set lWMIObjectSet = lWMIServices.InstancesOf("Win32_LogicalDisk")

For Each lWMIObject In lWMIObjectSet
      Debug.Print lWMIObject.Name
Next
End Sub
==============================================================================================================

I can get the names of the logical disks in the system.

Following is a C++ snippet of the code which tries to perform the same functionality.

==============================================================================================================
     IWbemLocator* pWbemLocator = 0;
     CComBSTR lNameSpace("root\\cimv2"); // Default namespace
     IWbemServices* pWbemServices = 0;
     IEnumWbemClassObject* pEnumWbemClassObject = 0;
     IErrorInfo* pErrorInfo = 0;

     HRESULT hRes = E_FAIL;
     hRes = CoCreateInstance(__uuidof(WbemLocator),NULL,CLSCTX_INPROC_SERVER,__uuidof(IWbemLocator),(LPVOID*)(&pWbemLocator));
     if SUCCEEDED(hRes)
     {
     try
     {
          hRes = pWbemLocator->ConnectServer(lNameSpace,NULL,NULL,NULL,0,NULL,NULL,&pWbemServices);
          if ( FAILED ( hRes ) )
          {
               pWbemLocator->Release();
          }
          else
          {
               if ( pWbemServices != 0 )
               {
                       IWbemClassObject* pObj = 0;
                    BSTR bstrPath = SysAllocString(L"Win32_LogicalDisk.DeviceID=\"D:\"");
                         hRes = pWbemServices->GetObject(bstrPath,0,0, &pObj, 0);
                         // hRes returns 0x80041003
                         // Display the object
                         BSTR bstrDriveObj;
                         hRes = pObj->GetObjectText(0, &bstrDriveObj);
                         printf("%S\n\n", bstrDriveObj);
                         pObj->Release();
                         pObj = NULL;
               }
          }
     }
     }
     // catch block omitted for clarity
==============================================================================================================

     In the call to pWbemServices->GetObject an error of 0x80041003 is returned which according to MSDN documentation is

     WBEM_E_ACCESS_DENIED
     The current user does not have permission to perform the action

     I am logged in as administrator and I do not understand the reason for this error. What could be wrong?

Any help would be appreciated.

TIA
-Sankar

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