111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright 1998 Microsoft Corporation. All Rights Reserved.
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//
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// Author: Scott Roberts, Microsoft Developer Support - Internet Client SDK
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//
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// Portions of this code were taken from the bandobj sample that comes
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// with the Internet Client SDK for Internet Explorer 4.0x
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//
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//
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// ClsFact.cpp - CClassFactory Implementation
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/////////////////////////////////////////////////////////////////////////////
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#include "pch.hxx"
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#include "ClsFact.h"
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#include "Guid.h"
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///////////////////////////////////////////////////////////////////////////
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//
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// IClassFactory Methods
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//
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CClassFactory::CClassFactory(CLSID clsid)
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: m_cRef(1),
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m_clsidObject(clsid)
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{
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InterlockedIncrement(&g_cDllRefCount);
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}
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CClassFactory::~CClassFactory()
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{
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InterlockedDecrement(&g_cDllRefCount);
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}
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STDMETHODIMP CClassFactory::QueryInterface(REFIID riid, LPVOID* ppvObject)
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{
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*ppvObject = NULL;
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if (IsEqualIID(riid, IID_IUnknown))
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*ppvObject = this;
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else if(IsEqualIID(riid, IID_IClassFactory))
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*ppvObject = static_cast<IClassFactory*>(this);
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if (*ppvObject)
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{
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static_cast<LPUNKNOWN>(*ppvObject)->AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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STDMETHODIMP_(ULONG) CClassFactory::AddRef()
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{
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return InterlockedIncrement(&m_cRef);
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}
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STDMETHODIMP_(ULONG) CClassFactory::Release()
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{
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if (0 == InterlockedDecrement(&m_cRef))
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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 m_cRef;
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}
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STDMETHODIMP CClassFactory::CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, LPVOID* ppvObject)
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{
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HRESULT hr = E_FAIL;
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LPVOID pTemp = NULL;
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*ppvObject = NULL;
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if (pUnkOuter != NULL)
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return CLASS_E_NOAGGREGATION;
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// Create the proper object
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if (IsEqualCLSID(m_clsidObject, CLSID_BLHost))
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{
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CBLHost* pBLHost = new CBLHost();
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if (NULL == pBLHost)
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return E_OUTOFMEMORY;
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pTemp = pBLHost;
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}
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if (pTemp)
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{
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// QI for the requested interface
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hr = (static_cast<LPUNKNOWN>(pTemp))->QueryInterface(riid, ppvObject);
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// Call Release to decement the ref count
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(static_cast<LPUNKNOWN>(pTemp))->Release();
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}
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return hr;
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}
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STDMETHODIMP CClassFactory::LockServer(BOOL)
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{
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return E_NOTIMPL;
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}
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