174 lines
3.4 KiB
C++
174 lines
3.4 KiB
C++
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//+------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996 - 1997
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//
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// File: cclsacc.cxx
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//
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// Contents: Class factory and IUnknown methods for CClassAccess
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//
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// Author: DebiM
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//
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//-------------------------------------------------------------------------
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#include "cstore.hxx"
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HRESULT __stdcall CClassAccess::QueryInterface(REFIID riid, void * * ppvObject)
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{
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IUnknown *pUnkTemp = NULL;
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SCODE sc = S_OK;
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if( IsEqualIID( IID_IUnknown, riid ) )
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{
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pUnkTemp = (IUnknown *)(IClassAccess *)this;
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}
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else if( IsEqualIID( IID_IClassAccess, riid ) )
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{
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pUnkTemp = (IUnknown *)(IClassAccess *)this;
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}
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/*
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else if( IsEqualIID( IID_IClassRefresh, riid ) )
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{
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pUnkTemp = (IUnknown *)(IClassRefresh *)this;
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}
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*/
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else
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{
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sc = (E_NOINTERFACE);
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}
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if((pUnkTemp != NULL) && (SUCCEEDED(sc)))
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{
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*ppvObject = (void * )pUnkTemp;
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pUnkTemp->AddRef();
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}
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return(sc);
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}
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ULONG __stdcall CClassAccess::AddRef()
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{
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InterlockedIncrement(( long * )&m_uRefs );
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return m_uRefs;
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}
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ULONG __stdcall CClassAccess::Release()
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{
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unsigned long uTmp = InterlockedDecrement((long *)&m_uRefs);
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unsigned long cRef = m_uRefs;
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// 0 is the only valid value to check
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if (uTmp == 0)
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{
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delete this;
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}
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return(cRef);
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}
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//
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// Constructor
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//
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unsigned long gulcClassFactory = 0;
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CClassAccessCF::CClassAccessCF()
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{
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m_uRefs = 1;
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InterlockedIncrement((long *) &gulcClassFactory );
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}
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//
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// Destructor
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//
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CClassAccessCF::~CClassAccessCF()
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{
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InterlockedDecrement((long *) &gulcClassFactory );
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}
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HRESULT __stdcall CClassAccessCF::QueryInterface(REFIID riid, void * * ppvObject)
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{
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IUnknown *pUnkTemp = NULL;
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SCODE sc = S_OK;
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if( IsEqualIID( IID_IUnknown, riid ) )
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{
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pUnkTemp = (IUnknown *)(ITypeLib *)this;
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}
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else if( IsEqualIID( IID_IClassFactory, riid ) )
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{
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pUnkTemp = (IUnknown *)(IClassFactory *)this;
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}
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else
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{
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sc = (E_NOINTERFACE);
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}
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if((pUnkTemp != NULL) && (SUCCEEDED(sc)))
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{
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*ppvObject = (void * )pUnkTemp;
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pUnkTemp->AddRef();
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}
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return(sc);
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}
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ULONG __stdcall CClassAccessCF::AddRef()
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{
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InterlockedIncrement(( long * )&m_uRefs );
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return m_uRefs;
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}
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ULONG __stdcall CClassAccessCF::Release()
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{
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unsigned long uTmp = InterlockedDecrement((long *)&m_uRefs);
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unsigned long cRef = m_uRefs;
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// 0 is the only valid value to check
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if (uTmp == 0)
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{
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delete this;
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}
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return(cRef);
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}
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//
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// IClassFactory Overide
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//
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HRESULT __stdcall CClassAccessCF::CreateInstance(IUnknown * pUnkOuter, REFIID riid, void * * ppvObject)
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{
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CClassAccess * pIUnk = NULL;
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SCODE sc = S_OK;
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if( pUnkOuter == NULL )
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{
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if( (pIUnk = new CClassAccess()) != NULL)
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{
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sc = pIUnk->QueryInterface( riid , ppvObject );
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if(FAILED(sc))
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{
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sc = E_UNEXPECTED;
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}
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pIUnk->Release();
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}
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else
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sc = E_OUTOFMEMORY;
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}
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else
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{
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return E_INVALIDARG;
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}
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return (sc);
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}
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HRESULT __stdcall CClassAccessCF::LockServer(BOOL fLock)
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{
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if(fLock)
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{ InterlockedIncrement((long *) &gulcClassFactory ); }
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else
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{ InterlockedDecrement((long *) &gulcClassFactory ); }
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return(S_OK);
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}
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