GetProperties is not a member of IVdsDisk

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Hi,
I'm developing an application for pen drive in C. When i called GetProperties method of IVdsDisk, gets the error as "GetProperties is not a member of IVdsDisk".
Here is my piece of code,

HRESULT hResult;
IVdsDisk* pVdsDisk = NULL;
VDS_DISK_PROP diskProp;
hResult = pVdsDisk->GetProperties(&diskProp);

Can anyone suggest me why i get this error.

Regards
Mohan

Posted 7-Jan-11 2:30am

Mohanraj Sam

Updated 7-Jan-11 2:42am

#realJSOP

v2

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Espen Harlinn 7-Jan-11 9:42am

Was there anything wrong with the answer? Remeber to vote and mark questions as answered

2 solutions

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#realJSOP · Answer 1 · 2011-01-07T02:42:00

Solution 2

It's been a number of years since I had to do any C++ or COM work, but try this:

C++

IVdsDisk* pVdsDisk = NULL;
HRESULT hResult = ppObjUnk->QueryInterface(IID_IVdsDisk, (void**)&pVdsDisk); 
if (hresult == SUCCESS)
{
    VDS_DISK_PROP diskProp;
    hResult = pVdsDisk->GetProperties(&diskProp);
}

Posted 7-Jan-11 2:42am

#realJSOP

Updated 7-Jan-11 2:45am

v2

Comments

Espen Harlinn 7-Jan-11 8:54am

5+ seems right, but tag indicates c, the operations has to be performed in a similar manner though - not c++

Espen Harlinn · Answer 2 · 2011-01-07T02:39:00

GetProperties is a documented member IVdsDisk::GetProperties[^]

Try moving the cursor in Visual Studio to GetProperties and press F12, BTW you are using C++ - in c things may look a little different.

Actually it looks like this in c

typedef struct IVdsDiskVtbl
    {
        BEGIN_INTERFACE
        
        HRESULT ( STDMETHODCALLTYPE *QueryInterface )( 
            __RPC__in IVdsDisk * This,
            /* [in] */ __RPC__in REFIID riid,
            /* [annotation][iid_is][out] */ 
            __RPC__deref_out  void **ppvObject);
        
        ULONG ( STDMETHODCALLTYPE *AddRef )( 
            __RPC__in IVdsDisk * This);
        
        ULONG ( STDMETHODCALLTYPE *Release )( 
            __RPC__in IVdsDisk * This);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *GetProperties )( 
            __RPC__in IVdsDisk * This,
            /* [out] */ __RPC__out VDS_DISK_PROP *pDiskProperties);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *GetPack )( 
            __RPC__in IVdsDisk * This,
            /* [out] */ __RPC__deref_out_opt IVdsPack **ppPack);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *GetIdentificationData )( 
            __RPC__in IVdsDisk * This,
            /* [out] */ __RPC__out VDS_LUN_INFORMATION *pLunInfo);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *QueryExtents )( 
            __RPC__in IVdsDisk * This,
            /* [size_is][size_is][out] */ __RPC__deref_out_ecount_full_opt(*plNumberOfExtents) VDS_DISK_EXTENT **ppExtentArray,
            /* [out] */ __RPC__out LONG *plNumberOfExtents);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *ConvertStyle )( 
            __RPC__in IVdsDisk * This,
            /* [in] */ VDS_PARTITION_STYLE NewStyle);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *SetFlags )( 
            __RPC__in IVdsDisk * This,
            /* [in] */ ULONG ulFlags);
        
        /* [helpstring] */ HRESULT ( STDMETHODCALLTYPE *ClearFlags )( 
            __RPC__in IVdsDisk * This,
            /* [in] */ ULONG ulFlags);
        
        END_INTERFACE
    } IVdsDiskVtbl;
    interface IVdsDisk
    {
        CONST_VTBL struct IVdsDiskVtbl *lpVtbl;
    };

Regards
Espen Harlinn