234 lines
4.3 KiB
C++
234 lines
4.3 KiB
C++
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// clsfact.cpp
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//
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// Class factory for ineticon.
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//
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// History:
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//
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// 3/16/97 edwardp Created.
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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// Includes
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//
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#include "stdinc.h"
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#include "clsfact.h"
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#include "cdfidl.h"
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#include "persist.h"
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#include "cdfview.h"
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#include "iconhand.h"
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#include "chanmgrp.h"
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#include "chanmgri.h"
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#include "chanmenu.h"
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#include "proppgs.h"
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#include "dll.h" // DllAddRef, DllRelease.
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//
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// Constructor and destructor.
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//
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::CCdfClassFactory ***
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//
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// Class factory constructor.
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//
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////////////////////////////////////////////////////////////////////////////////
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CCdfClassFactory::CCdfClassFactory (
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CREATEPROC pfn
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)
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: m_cRef(1),
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m_Create(pfn)
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{
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ASSERT(m_Create != NULL);
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//
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// As long as this class is around the dll should stay loaded.
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//
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TraceMsg(TF_OBJECTS, "+ IClassFactory");
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DllAddRef();
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return;
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}
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::~CCdfClassFactory ***
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//
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// Class factory destructor.
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//
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////////////////////////////////////////////////////////////////////////////////
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CCdfClassFactory::~CCdfClassFactory (
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void
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)
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{
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//
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// Matching Release for the constructor Addref.
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//
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TraceMsg(TF_OBJECTS, "- IClassFactory");
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DllRelease();
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return;
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}
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//
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// IUnknown methods.
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//
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::QueryInterface ***
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//
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// Class factory QI.
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//
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////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CCdfClassFactory::QueryInterface (
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REFIID riid,
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void **ppv
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)
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{
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ASSERT(ppv);
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HRESULT hr;
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if (IID_IUnknown == riid || IID_IClassFactory == riid)
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{
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AddRef();
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*ppv = (IClassFactory*)this;
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hr = S_OK;
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}
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else
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{
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*ppv = NULL;
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hr = E_NOINTERFACE;
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}
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ASSERT((SUCCEEDED(hr) && *ppv) || (FAILED(hr) && NULL == *ppv));
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return hr;
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}
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::AddRef ***
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//
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// Class factory AddRef.
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//
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////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_(ULONG)
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CCdfClassFactory::AddRef (
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void
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)
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{
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ASSERT(m_cRef != 0);
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ASSERT(m_cRef < (ULONG)-1);
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return ++m_cRef;
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}
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::Release ***
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//
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// Class factory Release.
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//
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////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_(ULONG)
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CCdfClassFactory::Release (
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void
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)
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{
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ASSERT (m_cRef != 0);
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ULONG cRef = --m_cRef;
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if (0 == cRef)
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delete this;
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return cRef;
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}
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//
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// IClassFactory methods.
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//
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** CCdfClassFactory::CreateInstance ***
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//
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// Creates a cdf view object.
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//
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////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CCdfClassFactory::CreateInstance (
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IUnknown* pOuterUnknown,
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REFIID riid,
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void **ppvObj
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)
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{
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ASSERT(ppvObj);
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HRESULT hr;
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*ppvObj = NULL;
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if (NULL == pOuterUnknown)
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{
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IUnknown* pIUnknown;
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hr = m_Create(&pIUnknown);
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if (SUCCEEDED(hr))
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{
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ASSERT(pIUnknown)
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hr = pIUnknown->QueryInterface(riid, ppvObj);
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pIUnknown->Release();
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}
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}
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else
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{
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//
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// This object doesn't support aggregation.
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//
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hr = CLASS_E_NOAGGREGATION;
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}
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ASSERT((SUCCEEDED(hr) && *ppvObj) || (FAILED(hr) && NULL == *ppvObj));
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return hr;
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}
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// *** LockServer ***
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//
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// Increments/decrements the class factory ref count.
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//
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////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CCdfClassFactory::LockServer (
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BOOL bLock
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)
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{
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if (bLock)
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AddRef();
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else
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Release();
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return S_OK;
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}
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