IADsObjectOptions Interface

The IADsObjectOptions interface gives direct access to setting and retrieving provider-specific options. This is currently supported only in Active Directory.

One of the Active Directory object options is to return the host name of a server. This example routine uses the interface to retrieve the host name of the global catalog server.

HRESULT GetGCServerName(VARIANT *vGCServer) 
{
	HRESULT hr = S_OK
	HRESULT hre = S_OK;
	IADsContainer *pContainer = NULL;
	IUnknown *pUnk = NULL;
	IEnumVARIANT *pEnum = NULL;
	IDispatch *pDisp = NULL;
	IADsObjectOptions *pOpt = NULL;
	VARIANT var;
	ULONG lFetch = 0;

	VariantInit(&var);
 
	// Bind to the global catalog using a serverless bind.
	hr = ADsOpenObject(L"GC:", NULL, NULL,
					 ADS_SECURE_AUTHENTICATION,
					 IID_IADsContainer, (void**) &pContainer );
	if (FAILED(hr))
		return (hr);
 
	hr = pContainer->get__NewEnum(&pUnk);
	if (SUCCEEDED(hr))
	{
		hr = pUnk->QueryInterface(IID_IEnumVARIANT, (void**) &pEnum);
		if (SUCCEEDED(hr))
		{
			// Enumerate.
			hr = pEnum->Next(1, &var, &lFetch);
			if (SUCCEEDED(hr))
			{
				while (SUCCEEDED(hr))
				{
					if (lFetch == 1)
					{
						pDisp = V_DISPATCH(&var);
						hre = pDisp->QueryInterface(
										IID_IADsObjectOptions,
										(void**)&pOpt);
						if (pDisp)
							pDisp->Release();
				}
					VariantClear(&var);
					hr = pEnum->Next(1, &var, &lFetch);
			}
				// S_FALSE indicates that the row was read properly.
				if (hr == S_FALSE)
					hr = hre;
		}
 
			if (SUCCEEDED(hr))
			{
				// There is a valid pOpt, so request the server name.
				VariantInit(vGCServer);
				hr = pOpt->GetOption(ADS_OPTION_SERVERNAME,vGCServer);
		}
	}
}
 
// Clean up.
	VariantClear(&var);
	if (pOpt)
		pOpt->Release();
	if (pEnum)
		pEnum->Release();
	if (pUnk)
		pUnk->Release();
	if (pContainer)
		pContainer->Release();
	return (hr);
}