189 lines
4.8 KiB
C++
189 lines
4.8 KiB
C++
//+-------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 2000 - 2000
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//
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// File: comobjects.cpp
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//
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// Contents: Base code for com objects exported by Object Model.
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//
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// Classes: CMMCStrongReferences
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//
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// History: 16-May-2000 AudriusZ Created
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//
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//--------------------------------------------------------------------
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#include "stdafx.h"
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#include <atlcom.h>
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#include "comerror.h"
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#include "events.h"
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#include "comobjects.h"
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::AddRef
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*
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* PURPOSE: (static) puts a strong reference on mmc
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*
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* PARAMETERS:
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*
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* RETURNS:
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* DWORD -
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*
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\***************************************************************************/
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DWORD CMMCStrongReferences::AddRef()
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{
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return GetSingletonObject().InternalAddRef();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::Release
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*
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* PURPOSE: (static) releases strong reference from MMC
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*
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* PARAMETERS:
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*
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* RETURNS:
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* DWORD
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*
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\***************************************************************************/
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DWORD CMMCStrongReferences::Release()
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{
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return GetSingletonObject().InternalRelease();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::LastRefReleased
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*
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* PURPOSE: returns whether the last strong reference was released
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*
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* PARAMETERS:
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*
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* RETURNS:
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* bool - true == last ref was released
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*
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\***************************************************************************/
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bool CMMCStrongReferences::LastRefReleased()
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{
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return GetSingletonObject().InternalLastRefReleased();
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::CMMCStrongReferences
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*
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* PURPOSE: constructor
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*
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* PARAMETERS:
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*
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* RETURNS:
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*
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\***************************************************************************/
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CMMCStrongReferences::CMMCStrongReferences() :
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m_dwStrongRefs(0),
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m_bLastRefReleased(false)
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{
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::GetSingletonObject
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*
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* PURPOSE: (helper) returns reference to the singleton object
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*
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* PARAMETERS:
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*
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* RETURNS:
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* CMMCStrongReferences& - singleto object
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*
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\***************************************************************************/
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CMMCStrongReferences& CMMCStrongReferences::GetSingletonObject()
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{
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static CMMCStrongReferences singleton;
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return singleton;
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::InternalAddRef
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*
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* PURPOSE: (helper) implements strong addreff
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*
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* PARAMETERS:
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*
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* RETURNS:
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* DWORD -
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*
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\***************************************************************************/
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DWORD CMMCStrongReferences::InternalAddRef()
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{
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return ++m_dwStrongRefs;
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::InternalRelease
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*
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* PURPOSE: (helper) implements strong release
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*
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* PARAMETERS:
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*
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* RETURNS:
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* DWORD -
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*
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\***************************************************************************/
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DWORD CMMCStrongReferences::InternalRelease()
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{
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if (--m_dwStrongRefs == 0)
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m_bLastRefReleased = true;
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return m_dwStrongRefs;
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}
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/***************************************************************************\
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*
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* METHOD: CMMCStrongReferences::InternalLastRefReleased
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*
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* PURPOSE: (helper) returns whether the last strong ref was released
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*
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* PARAMETERS:
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*
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* RETURNS:
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* bool - true == last ref was released
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*
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\***************************************************************************/
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bool CMMCStrongReferences::InternalLastRefReleased()
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{
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return m_bLastRefReleased;
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}
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/***************************************************************************\
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*
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* FUNCTION: GetComObjectEventSource
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*
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* PURPOSE: returns singleton for emmiting Com Object Events
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[ScOnDisconnectObjects() currently is the only event]
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*
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* PARAMETERS:
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*
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* RETURNS:
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* CEventSource<CComObjectObserver>&
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*
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\***************************************************************************/
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MMCBASE_API
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CEventSource<CComObjectObserver>&
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GetComObjectEventSource()
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{
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static CEventSource<CComObjectObserver> evSource;
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return evSource;
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}
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/***************************************************************************/
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// static members of class CConsoleEventDispatcherProvider
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MMCBASE_API
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CConsoleEventDispatcher *CConsoleEventDispatcherProvider::s_pDispatcher = NULL;
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