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126 lines
3.0 KiB
126 lines
3.0 KiB
//+--------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992.
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//
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// File: dblink.hxx
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//
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// Contents: Doubly-linked list element
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//
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// Classes: CDlElement
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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#ifndef __DBLINK_HXX__
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#define __DBLINK_HXX__
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class CDlElement;
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SAFE_DFBASED_PTR(CBasedDlElementPtr, CDlElement);
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//+--------------------------------------------------------------
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//
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// Class: CDlElement (dle)
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//
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// Purpose: An element of a doubly-linked list
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//
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// Interface: See below
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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class CDlElement
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{
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public:
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inline CDlElement(void);
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inline CDlElement *_GetNext(void) const;
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inline void SetNext(CDlElement *pdle);
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inline CDlElement *_GetPrev(void) const;
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inline void SetPrev(CDlElement *pdle);
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protected:
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CBasedDlElementPtr _pdlePrev, _pdleNext;
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};
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//+--------------------------------------------------------------
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//
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// Member: CDlElement::CDlElement, public
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//
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// Synopsis: Ctor
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline CDlElement::CDlElement(void)
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{
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_pdlePrev = _pdleNext = NULL;
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}
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//+--------------------------------------------------------------
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//
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// Member: CDlElement::_GetNext, public
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//
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// Synopsis: Returns _pdleNext
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline CDlElement *CDlElement::_GetNext(void) const
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{
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return BP_TO_P(CDlElement *, _pdleNext);
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}
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//+--------------------------------------------------------------
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//
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// Member: CDlElement::_SetNext, public
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//
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// Synopsis: Sets _pdleNext
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline void CDlElement::SetNext(CDlElement *pdle)
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{
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_pdleNext = P_TO_BP(CBasedDlElementPtr, pdle);
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}
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//+--------------------------------------------------------------
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//
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// Member: CDlElement::_GetPrev, public
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//
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// Synopsis: Returns _pdlePrev
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline CDlElement *CDlElement::_GetPrev(void) const
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{
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return BP_TO_P(CDlElement *, _pdlePrev);
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}
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//+--------------------------------------------------------------
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//
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// Member: CDlElement::_SetPrev, public
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//
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// Synopsis: Sets _pdlePrev
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//
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// History: 28-Jul-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline void CDlElement::SetPrev(CDlElement *pdle)
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{
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_pdlePrev = P_TO_BP(CBasedDlElementPtr, pdle);
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}
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#define DECLARE_DBLINK(type) \
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type *GetNext(void) const { return (type *)_GetNext(); } \
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type *GetPrev(void) const { return (type *)_GetPrev(); } \
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#endif // #ifndef __DBLINK_HXX__
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