185 lines
6 KiB
C++
185 lines
6 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1995 - 1997.
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//
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// File: stdcf.h
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//
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// Contents: Definitions of utility stuff for use with Compound Document
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// objects.
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//
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// Classes:
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// CStaticClassFactory
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// CDynamicClassFactory
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//
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// Functions:
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//
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// Macros:
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//
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// History: 26-Feb-96 SSanu adapted from Forms stuff
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//----------------------------------------------------------------------------
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#pragma once
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//---------------------------------------------------------------
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// IUnknown
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//---------------------------------------------------------------
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#define IXIncrement(__ul) InterlockedIncrement((long *) &__ul)
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#define IXDecrement(__ul) InterlockedDecrement((long *) &__ul)
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#define DECLARE_IR_IUNKNOWN_METHODS \
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STDMETHOD(QueryInterface) (REFIID riid, LPVOID * ppv); \
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STDMETHOD_(ULONG, AddRef) (void); \
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STDMETHOD_(ULONG, Release) (void);
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#define DECLARE_IR_APTTHREAD_IUNKNOWN \
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STDMETHOD(QueryInterface) (REFIID riid, LPVOID * ppv); \
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ULONG _ulRefs; \
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STDMETHOD_(ULONG, AddRef) (void) \
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{ \
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return ++_ulRefs; \
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} \
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STDMETHOD_(ULONG, Release) (void) \
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{ \
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if (!--_ulRefs) \
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{ \
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delete this; \
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return 0; \
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} \
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return _ulRefs; \
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}
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#define DECLARE_IR_STANDARD_IUNKNOWN(cls) \
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STDMETHOD(QueryInterface) (REFIID riid, LPVOID * ppv); \
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ULONG _ulRefs; \
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STDMETHOD_(ULONG, AddRef) (void) \
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{ \
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IXIncrement(_ulRefs); \
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return _ulRefs; \
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} \
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STDMETHOD_(ULONG, Release) (void) \
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{ \
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if (!IXDecrement(_ulRefs)) \
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{ \
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IXIncrement(_ulRefs); \
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delete this; \
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return 0; \
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} \
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return _ulRefs; \
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}
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//+---------------------------------------------------------------------
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//
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// Miscellaneous useful OLE helper and debugging functions
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//
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//----------------------------------------------------------------------
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//+---------------------------------------------------------------------
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//
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// Standard IClassFactory implementation
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//
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//----------------------------------------------------------------------
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//
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// Functions to manipulate object count variable g_ulObjCount. This variable
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// is used in the implementation of DllCanUnloadNow.
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inline void
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INC_OBJECT_COUNT(void)
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{
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extern ULONG g_ulObjCount;
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IXIncrement(g_ulObjCount);
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}
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inline void
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DEC_OBJECT_COUNT(void)
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{
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extern ULONG g_ulObjCount;
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Win4Assert(g_ulObjCount > 0);
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IXDecrement(g_ulObjCount);
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}
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inline ULONG
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GET_OBJECT_COUNT(void)
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{
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extern ULONG g_ulObjCount;
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return g_ulObjCount;
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}
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//+---------------------------------------------------------------
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//
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// Class: CStaticClassFactory
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//
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// Purpose: Standard implementation of a class factory object
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//
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// Notes: **************!!!!!!!!!!!!!!!!!*************
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// TAKE NOTE --- The implementation of Release on this
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// class does not perform a delete. This is so you can
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// make the class factory a global static variable.
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// Use the CDynamicClassFactory class below for an object
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// which is not global static data.
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//
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//---------------------------------------------------------------
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class CStaticClassFactory: public IClassFactory
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{
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public:
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CStaticClassFactory(void) : _ulRefs(1) {};
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// IUnknown methods
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DECLARE_IR_IUNKNOWN_METHODS;
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// IClassFactory methods
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STDMETHOD(LockServer) (BOOL fLock);
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// CreateInstance is left pure virtual.
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protected:
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ULONG _ulRefs;
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CDynamicClassFactory (DYNCF)
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//
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// Purpose: Class factory which exists on the heap, and whose Release
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// method does the normal thing.
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//
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// Interface: DECLARE_IR_STANDARD_IUNKNOWN -- IUnknown methods
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//
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// LockServer -- Per IClassFactory.
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// CDynamicClassFactory -- ctor.
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// ~CDynamicClassFactory -- dtor.
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//
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//----------------------------------------------------------------------------
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class CDynamicClassFactory: public IClassFactory
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{
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public:
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// IUnknown methods
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DECLARE_IR_STANDARD_IUNKNOWN(CDynamicClassFactory)
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// IClassFactory methods
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STDMETHOD(LockServer) (BOOL fLock);
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// CreateInstance is left pure virtual.
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protected:
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CDynamicClassFactory(void);
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virtual ~CDynamicClassFactory(void);
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};
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