93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
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#ifndef _INC_DSKQUOTA_FACTORY_H
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#define _INC_DSKQUOTA_FACTORY_H
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///////////////////////////////////////////////////////////////////////////////
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/* File: factory.h
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Description: Contains declaration for the class factory object.
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Revision History:
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Date Description Programmer
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-------- --------------------------------------------------- ----------
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05/22/96 Initial creation. BrianAu
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08/15/96 Added shell extension support. BrianAu
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02/04/98 Added creation of IComponent. BrianAu
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*/
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///////////////////////////////////////////////////////////////////////////////
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class DiskQuotaUIClassFactory : public IClassFactory
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{
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public:
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DiskQuotaUIClassFactory(void)
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: m_cRef(0) { }
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//
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// IUnknown methods
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//
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STDMETHODIMP
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QueryInterface(
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REFIID,
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LPVOID *);
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STDMETHODIMP_(ULONG)
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AddRef(
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VOID);
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STDMETHODIMP_(ULONG)
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Release(
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VOID);
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//
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// IClassFactory methods
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//
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STDMETHODIMP
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CreateInstance(
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LPUNKNOWN pUnkOuter,
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REFIID riid,
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LPVOID *ppvOut);
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STDMETHODIMP
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LockServer(
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BOOL fLock);
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private:
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LONG m_cRef;
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//
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// Prevent copying.
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//
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DiskQuotaUIClassFactory(const DiskQuotaUIClassFactory& rhs);
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DiskQuotaUIClassFactory& operator = (const DiskQuotaUIClassFactory& rhs);
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};
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//
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// Since dskquoui.dll can offer up two somewhat-related objects (a shell extension
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// and an MMC snapin extension), we create this intermediary class in case someone
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// calls IClassFactory::CreateInstance asking for IUnknown (MMC does this). When
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// this happens, we don't know what object the client wants. The caller then can
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// query this proxy object for a specific interface and the proxy generates the
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// appropriate object.
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//
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class InstanceProxy : public IUnknown
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{
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public:
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InstanceProxy(void)
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: m_cRef(0) { }
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~InstanceProxy(void) { }
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//
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// IUnknown methods
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//
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STDMETHODIMP QueryInterface(REFIID, LPVOID *);
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STDMETHODIMP_(ULONG) AddRef(VOID);
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STDMETHODIMP_(ULONG) Release(VOID);
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private:
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LONG m_cRef;
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};
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#endif // _INC_DSKQUOTA_FACTORY_H
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