108 lines
1.6 KiB
C++
108 lines
1.6 KiB
C++
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//-----------------------------------------------------------------------------
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// File: ipageclassfact.cpp
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//
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// Desc: Implements the class factory for the page object.
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//
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// Copyright (C) 1999-2000 Microsoft Corporation. All Rights Reserved.
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//-----------------------------------------------------------------------------
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#include "common.hpp"
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//QI
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STDMETHODIMP CPageFactory::QueryInterface(REFIID riid, LPVOID* ppv)
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{
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//null the put parameter
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*ppv = NULL;
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if ((riid == IID_IUnknown) || (riid == IID_IClassFactory))
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{
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*ppv = this;
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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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//AddRef
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STDMETHODIMP_(ULONG) CPageFactory::AddRef()
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{
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return InterlockedIncrement(&m_cRef);
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}
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//Release
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STDMETHODIMP_(ULONG) CPageFactory::Release()
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{
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if (InterlockedDecrement(&m_cRef) == 0)
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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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//CreateInstance
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STDMETHODIMP CPageFactory::CreateInstance(IUnknown* pUnkOuter, REFIID riid, LPVOID *ppv)
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{
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HRESULT hr = S_OK;
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//can't aggregate
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if (pUnkOuter != NULL)
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{
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return CLASS_E_NOAGGREGATION;
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}
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//create component
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CDIDeviceActionConfigPage* pFE = new CDIDeviceActionConfigPage();
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if (pFE == NULL)
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{
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return E_OUTOFMEMORY;
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}
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//get the requested interface
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hr = pFE->QueryInterface(riid, ppv);
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//release IUnknown
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pFE->Release();
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return hr;
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}
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//LockServer
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STDMETHODIMP CPageFactory::LockServer(BOOL bLock)
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{
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HRESULT hr = S_OK;
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if (bLock)
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{
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InterlockedIncrement(&g_cServerLocks);
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}
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else
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{
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InterlockedDecrement(&g_cServerLocks);
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}
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return hr;
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}
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//constructor
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CPageFactory::CPageFactory()
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{
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m_cRef = 1;
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}
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//destructor
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CPageFactory::~CPageFactory()
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{
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}
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