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78 lines
1.5 KiB
78 lines
1.5 KiB
/*
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* Copyright (c) 2003, Sergey Zorin. All rights reserved.
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*
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* This software is distributable under the BSD license. See the terms
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* of the BSD license in the LICENSE file provided with this software.
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*
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*/
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#include "class_factory.h"
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#include "diff_ext.h"
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#include "server.h"
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CLASS_FACTORY::CLASS_FACTORY() {
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_ref_count = 0L;
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SERVER::instance()->lock();
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}
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CLASS_FACTORY::~CLASS_FACTORY() {
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SERVER::instance()->release();
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}
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STDMETHODIMP
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CLASS_FACTORY::QueryInterface(REFIID riid, void** ppv) {
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HRESULT ret = E_NOINTERFACE;
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*ppv = 0;
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if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory)) {
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*ppv = static_cast<CLASS_FACTORY*>(this);
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AddRef();
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ret = NOERROR;
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}
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return ret;
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}
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STDMETHODIMP_(ULONG)
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CLASS_FACTORY::AddRef() {
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return InterlockedIncrement((LPLONG)&_ref_count);
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}
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STDMETHODIMP_(ULONG)
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CLASS_FACTORY::Release() {
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ULONG ret = 0L;
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if(InterlockedDecrement((LPLONG)&_ref_count) != 0)
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ret = _ref_count;
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else
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delete this;
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return ret;
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}
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STDMETHODIMP
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CLASS_FACTORY::CreateInstance(IUnknown* outer, REFIID refiid, void** obj) {
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HRESULT ret = CLASS_E_NOAGGREGATION;
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*obj = 0;
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// Shell extensions typically don't support aggregation (inheritance)
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if(outer == 0) {
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DIFF_EXT* ext = new DIFF_EXT();
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if(ext == 0)
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ret = E_OUTOFMEMORY;
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else
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ret = ext->QueryInterface(refiid, obj);
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}
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return ret;
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}
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STDMETHODIMP
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CLASS_FACTORY::LockServer(BOOL) {
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return NOERROR;
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}
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