1 #ifndef APITESTS_UNKNOWNBASE_H
2 #define APITESTS_UNKNOWNBASE_H
3 
4 template<typename Interface>
5 class CUnknownBase : public Interface
6 {
7     LONG m_lRef;
8     bool m_AutoDelete;
9 protected:
10     virtual const QITAB* GetQITab() = 0;
11 public:
12 
13     CUnknownBase(bool autoDelete = true, LONG initialRef = 0)
14         : m_lRef(initialRef),
15         m_AutoDelete(autoDelete)
16     {
17     }
18 
19    ULONG STDMETHODCALLTYPE AddRef ()
20    {
21        return InterlockedIncrement( &m_lRef );
22    }
23 
24    ULONG STDMETHODCALLTYPE Release()
25    {
26        long newref = InterlockedDecrement( &m_lRef );
27        if (m_AutoDelete && newref<=0)
28        {
29            delete this;
30        }
31        return newref;
32    }
33 
34     HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppv)
35     {
36         return QISearch(this, GetQITab(), riid, ppv);
37     }
38 
39     virtual ~CUnknownBase() {}
40 
41     LONG GetRef() const
42     {
43         return m_lRef;
44     }
45 };
46 
47 #endif // APITESTS_UNKNOWNBASE_H
48