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從集合擷取物件

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下列程式碼會從用戶端集合擷取用戶端的 IP 位址。 pClientsCollection 變數會指向集合的 ISdoCollection 介面。 如需如何擷取集合物件的資訊，請參閱 擷 取集合。

   HRESULT hr
   _variant_t vtClientName = L"Test Client";
   
   //
   // Get the client "Test Client" from the collection of clients
   //
   CComPtr<IDispatch> pFoundClientDispatch;
   hr = pClientsCollection->Item(&vtClientName, &pFoundClientDispatch);
   if (FAILED(hr))
   {
      return hr;
   }

   CComPtr<ISdo> pFoundClientSdo;
   hr = pFoundClientDispatch->QueryInterface(
      __uuidof(ISdo),
      (void **) &pFoundClientSdo
   );
   if (FAILED(hr))
   {
      return hr;
   }

   //
   // Get the IP address of that client 
   //
   _variant_t vtAddress;
   hr = pFoundClientSdo->GetProperty(PROPERTY_CLIENT_ADDRESS ,&vtAddress);
   if (FAILED(hr))
   {
      return hr;
   }

ISdoCollection：：Item

擷取集合

SysAllocString

SysFreeString

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