Leaked source code of windows server 2003
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3.2 KiB

// --------------------------------------------------------------------------------
// Privunk.h
// Copyright (c)1993-1995 Microsoft Corporation, All Rights Reserved
// --------------------------------------------------------------------------------
#ifndef __PRIVUNK_H
#define __PRIVUNK_H
// --------------------------------------------------------------------------------
// CPrivateUnknown
// --------------------------------------------------------------------------------
class CPrivateUnknown : public IUnknown
{
private:
// ----------------------------------------------------------------------------
// Embed default IUnknown handler
// ----------------------------------------------------------------------------
class CUnkInner : public IUnknown
{
private:
LONG m_cRef; // Private Ref Count
public:
// Construction
CUnkInner(void) { m_cRef = 1; }
// IUnknown Members
virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
virtual STDMETHODIMP_(ULONG) AddRef(void) ;
virtual STDMETHODIMP_(ULONG) Release(void);
};
friend class CUnkInner;
// ----------------------------------------------------------------------------
// Private Data
// ----------------------------------------------------------------------------
CUnkInner m_cUnkInner; // Private Inner
IUnknown *m_pUnkOuter; // points to _cUnkInner or aggregating IUnknown
protected:
// ----------------------------------------------------------------------------
// Construction
// ----------------------------------------------------------------------------
CPrivateUnknown(IUnknown *pUnkOuter);
virtual ~CPrivateUnknown(void) {};
// ----------------------------------------------------------------------------
// This is the QueryInterface the aggregator implements
// ----------------------------------------------------------------------------
virtual HRESULT PrivateQueryInterface(REFIID riid, LPVOID * ppvObj) = 0;
public:
// ----------------------------------------------------------------------------
// This is the IUnknown that subclasses returns from their CreateInstance func
// ----------------------------------------------------------------------------
IUnknown* GetInner() { return &m_cUnkInner; }
// ----------------------------------------------------------------------------
// IUnknown Members
// ----------------------------------------------------------------------------
inline virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj) {
return m_pUnkOuter->QueryInterface(riid, ppvObj); }
inline virtual STDMETHODIMP_(ULONG) AddRef(void) {
return m_pUnkOuter->AddRef(); }
inline virtual STDMETHODIMP_(ULONG) Release(void) {
return m_pUnkOuter->Release(); }
// ----------------------------------------------------------------------------
// Public Utilities
// ----------------------------------------------------------------------------
void SetOuter(IUnknown *pUnkOuter);
};
#endif // __PRIVUNK_H