Example Code for Binding to Well Known Objects

The following code example shows how to bind to a well-known object using the WKGUID binding string.

//***************************************************************************
//
//  BindToWellKnownObject()
//
//  Binds to one of the well known objects in the current domain with the 
//  current user's credentials. pwszGUID must be one of the GUID strings 
//  defined in NTDSAPI.H, such as GUID_USERS_CONTAINER_W.
//
//***************************************************************************

HRESULT BindToWellKnownObject(LPCWSTR pwszGUID, IADs **ppObject)
{
	if(NULL == ppObject)
	{
		return E_INVALIDARG;
}

	HRESULT hr;
	IADs *pRoot;

	*ppObject = NULL;

	// Bind to the rootDSE object.
	hr = ADsOpenObject(L"LDAP://rootDSE",
					NULL,
					NULL,
					ADS_SECURE_AUTHENTICATION,
					IID_IADs,
					(LPVOID*)&pRoot);
	if(SUCCEEDED(hr))
	{
		VARIANT var;
	
		VariantInit(&var);

		// Get the current domain DN.
		hr = pRoot->Get(CComBSTR("defaultNamingContext"), &var);
		if(SUCCEEDED(hr))
		{
			// Build the binding string.
			LPWSTR pwszFormat = L"LDAP://<WKGUID=%s,%s>";
			LPWSTR pwszPath;

			pwszPath = new WCHAR[lstrlenW(pwszFormat) + lstrlenW(pwszGUID) + lstrlenW(var.bstrVal)];
			if(NULL != pwszPath)
			{
				wsprintfW(pwszPath, pwszFormat, pwszGUID, var.bstrVal);

				// Bind to the object.
				hr = ADsOpenObject(pwszPath,
								NULL,
								NULL,
								ADS_SECURE_AUTHENTICATION,
								IID_IADs,
								(LPVOID*)ppObject);

				delete pwszPath;
		}
			else
			{
				hr = E_OUTOFMEMORY;
		}

			VariantClear(&var); 
	}

		pRoot->Release(); 
}

	return hr;
}