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- /*+==========================================================================
- File: LISTSINK.H
-
- Summary: Include file for the COPageListSink COM object class.
-
- COPageListSink offers a main IUnknown standard interface and
- the custom IPageListSink interface (outgoing connection
- events from COPageList objects). This multiple interface COM
- Object Class is achieved via the technique of nested classes.
- The implementation of the IPageListSink interface is nested
- inside of the COPageListSink Class.
-
- For a comprehensive tutorial code tour of this module's
- contents and offerings see the tutorial PERCLIEN.HTM
- file. For more specific technical details on the internal
- workings see the comments dispersed throughout the module's
- source code.
-
- Functions: .
-
- Classes: COPageListSink.
-
- Origin: 5-25-97: atrent - Editor-inheritance from SINK.H in the
- STOCLIEN Tutorial Code Sample. [Revised]
-
- ----------------------------------------------------------------------------
- This file is part of the Microsoft COM Tutorial Code Samples.
-
- Copyright (C) Microsoft Corporation, 1997. All rights reserved.
-
- This source code is intended only as a supplement to Microsoft
- Development Tools and/or on-line documentation. See these other
- materials for detailed information regarding Microsoft code samples.
-
- THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
- KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
- PARTICULAR PURPOSE.
- ==========================================================================+*/
-
- #if !defined(LISTSINK_H)
- #define LISTSINK_H
-
- #ifdef __cplusplus
-
-
- /*O+O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O
- ObjectClass: COPageListSink
-
- Summary: The main Sink COM object class for COPageListSink COM
- objects. COM objects of this class offer the IPageListSink
- sink interface supporting various PageList events. The
- mulitple interfaces on this COM object are constructed via
- the nested interface classes technique.
-
- Interfaces: IUnknown
- Standard interface providing COM object features.
- IPageListSink
- Sink interface for PageList events.
-
- Aggregation: Yes, COPageListSink COM Objects are aggregatable by passing
- a non-NULL pUnkOuter IUnknown pointer into the constructor.
- O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O-O*/
- class COPageListSink : public IUnknown
- {
- public:
- // Main Object Constructor & Destructor.
- COPageListSink(IUnknown* pUnkOuter, CGuiList* pGuiList);
- ~COPageListSink(void);
-
- // IUnknown methods. Main object, non-delegating.
- STDMETHODIMP QueryInterface(REFIID, PPVOID);
- STDMETHODIMP_(ULONG) AddRef(void);
- STDMETHODIMP_(ULONG) Release(void);
-
- private:
- // We declare nested class interface implementations here.
-
- class CImpIPageListSink : public IPageListSink
- {
- public:
- // Interface Implementation Constructor & Destructor.
- CImpIPageListSink(COPageListSink* pCO, IUnknown* pUnkOuter);
- ~CImpIPageListSink(void);
-
- // IUnknown methods.
- STDMETHODIMP QueryInterface(REFIID, PPVOID);
- STDMETHODIMP_(ULONG) AddRef(void);
- STDMETHODIMP_(ULONG) Release(void);
-
- // IPageListSink methods.
- STDMETHODIMP Loaded(void);
- STDMETHODIMP Saved(void);
- STDMETHODIMP Cleared(void);
- STDMETHODIMP PageAdded(INT iPage);
- STDMETHODIMP PageDeleted(INT iPage);
- STDMETHODIMP PageSet(INT iPage);
-
- private:
- // Data private to this interface implementation of IPageList.
- COPageListSink* m_pCO; // Parent Object back pointer.
- IUnknown* m_pUnkOuter; // Outer unknown for Delegation.
- };
-
- // Make the otherwise private and nested IPageListSink interface
- // implementation a friend to COM object instantiations of this
- // COPageListSink COM object class.
- friend CImpIPageListSink;
-
- // Private data of COPageListSink COM objects.
-
- // Nested IPageListSink implementation instantiation. This
- // IPageListSink interface is instantiated inside this COPageListSink
- // object as a native interface.
- CImpIPageListSink m_ImpIPageListSink;
-
- // Main Object reference count.
- ULONG m_cRefs;
-
- // Outer unknown (aggregation delegation). Used when this COM object
- // is being aggregated.
- IUnknown* m_pUnkOuter;
-
- // Pointer to the main object that can service the Sink events.
- CGuiList* m_pGuiList;
- };
-
- #endif // __cplusplus
-
-
- #endif // LISTSINK_H
-