480 lines
19 KiB
C++
480 lines
19 KiB
C++
/*
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* @doc
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*
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* @module _RANGE.H -- CTxtRange Class |
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*
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* This class implements the internal text range and the TOM ITextRange
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*
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* Authors: <nl>
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* Original RichEdit code: David R. Fulmer
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* Christian Fortini
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* Murray Sargent
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* Alex Gounares (floating ranges, etc.)
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*
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* Copyright (c) 1995-1997, Microsoft Corporation. All rights reserved.
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*/
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#ifndef _RANGE_H
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#define _RANGE_H
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#include "_text.h"
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#include "_m_undo.h"
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#include "_rtext.h"
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#include "_edit.h"
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#include "_uspi.h"
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long FPPTS_TO_TWIPS(float x);
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#define TWIPS_TO_FPPTS(x) (((float)(x)) * (float)0.05)
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class CTxtEdit;
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class CTxtFont;
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/*
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* SELRR
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*
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* @enum flags used to control how ReplaceRange (RR) should generate
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* selection anti-events
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*/
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enum SELRR
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{
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SELRR_IGNORE = 0,
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SELRR_REMEMBERRANGE = 1,
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SELRR_REMEMBERCPMIN = 2,
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SELRR_REMEMBERENDIP = 3
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};
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/*
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* FINDWORD_TYPE
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*
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* @enum defines the different cases for finding a word
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*/
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enum FINDWORD_TYPE {
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FW_EXACT = 1, //@emem Finds the word exactly (no extra chars)
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FW_INCLUDE_TRAILING_WHITESPACE = 2, //@emem find the word plus the
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// following whitespace (ala double-clicking)
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};
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enum MOVES
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{
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MOVE_START = -1,
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MOVE_IP = 0,
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MOVE_END = 1,
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};
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enum MATCHES
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{
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MATCH_UNTIL = 0,
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MATCH_WHILE = 1
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};
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enum EOPADJUST
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{
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NONEWCHARS = 0,
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NEWCHARS = 1
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};
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// Substring's input flags
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#define SUBSTR_INSPANCHARSET 1
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#define SUBSTR_INSPANBLOCK 2
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// Substring's output charflags
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#define SUBSTR_OUTCCLTR 1
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#define SUBSTR_OUTCCRTL 2
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class CCharFlags
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{
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public:
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BYTE _bFirstStrong; // flag for first strong character
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BYTE _bContaining; // flags for all presented characters
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};
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#define SCF_IGNORESELAE 0x80000000
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#define SCF_IGNORENOTIFY 0x40000000 // use it with real caution! Caller must do it itself.
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/*
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* CTxtRange
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*
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* @class
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* The CTxtRange class implements RichEdit's text range, which is the
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* main conduit through which changes are made to the document.
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* The range inherits from the rich-text ptr, adding a signed length
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* insertion-point char-format index, and a ref count for use when
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* instantiated as a TOM ITextRange. The range object also contains
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* a flag that reveals whether the range is a selection (with associated
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* screen behavior) or just a simple range. This distinction is used
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* to simplify some of the code.
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*
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* Some methods are virtual to allow CTxtSelection objects to facilitate
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* UI features and selection updating.
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*
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* See tom.doc for lots of discussion on range and selection objects and
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* on all methods in ITextRange, ITextSelection, ITextFont, and ITextPara.
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*/
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class CTxtRange : public ITextSelection, public CRchTxtPtr
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{
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friend CTxtFont;
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//@access Protected Data
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protected:
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LONG _cch; //@cmember # chars in range. _cch > 0 for active
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// end at range end (cpMost)
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LONG _cRefs; //@cmember ITextRange/ITextSelection ref count
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short _iFormat; //@cmember Character format for degenerate range
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union
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{
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WORD _wFlags; // All together now
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struct
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{
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WORD _fExtend :1; //@cmember True iff Advance methods should
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// leave "other" end unchanged
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WORD _fSel :1; //@cmember True iff this is a CTxtSelection
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WORD _fDragProtection :1; //@cmember True is this range should think
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// it's protected. Set by drag/drop code
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WORD _fDontUpdateFmt:1;//@cmember Don't update _iFormat
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WORD _fDualFontMode:1; //@cmember Set during dual font mode
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WORD _fUseiFormat:1; //@cmember Use iFormat when replacing
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// a non-degenerate range
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WORD _fMoveBack:1; //@cmember TRUE if last change moved backward
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WORD _fSelHasEOP:1; //@cmember TRUE if Sel has EOP
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WORD _fSelHasCell:1; //@cmember TRUE if Sel CELL found looking for EOP
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WORD _fUseBackwardPFFmt:1; //@cmember Use backward PF format
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};
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};
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//@access Public methods
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public:
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#ifdef DEBUG
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BOOL Invariant( void ) const;
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#endif // DEBUG
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CTxtRange(const CTxtRange &rg);
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CTxtRange(CTxtEdit *ped, LONG cp = 0, LONG cch = 0);
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CTxtRange(CRchTxtPtr &rtp, LONG cch = 0);
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virtual ~CTxtRange();
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virtual CRchTxtPtr& operator =(const CRchTxtPtr &rtp);
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virtual CTxtRange& operator =(const CTxtRange &rp);
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// ITxNotify methods
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//@cmember Handles notifications
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virtual void OnPreReplaceRange( // prior to ReplaceRange calls
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LONG cp, LONG cchDel, LONG cchNew,
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LONG cpFormatMin, LONG cpFormatMax);
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//@cmember Handles notifications for
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virtual void OnPostReplaceRange( // floating range and display updates
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LONG cp, LONG cchDel, LONG cchNew,
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LONG cpFormatMin, LONG cpFormatMax);
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virtual void Zombie(); //@cmember Convert range into zombie
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void SetIgnoreFormatUpdate(BOOL fUpdate) { _fDontUpdateFmt = fUpdate; }
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void SetDualFontMode(BOOL fDualFontMode) {_fDualFontMode = fDualFontMode; }
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// Internal cp/cch methods
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LONG GetCch (void) const //@cmember Get signed character count
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{return _cch;}
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BOOL IsSel() {return _fSel;}
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BOOL fHasCell() const {return _fSelHasCell;}
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BOOL fHasEOP() const {return _fSelHasEOP;}
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BOOL CpInRange (LONG cp) const; //@cmember Says if cp is in this range
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BOOL CheckTextLength (LONG cch, LONG *pcch = NULL); //@cmember Says if cch chars can fit
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LONG CheckChange(LONG cpSave); //@cmember Used after _cp change to set
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// selection-changed flag, choose _cch
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//@cmember In outline mode, maintain _fSelHasEOP
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BOOL CheckIfSelHasEOP(LONG cpSave, LONG cchSave);
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BOOL IsInputSequenceValid(WCHAR* pwch, LONG cch, BOOL fOver, BOOL* pfBaseChar = NULL);//@cmember TRUE for valid sequence
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// GetRange() is faster than calling GetCpMin() and GetCpMost();
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LONG GetCpMin () const; //@cmember Get cp of first char in range
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LONG GetCpMost () const; //@cmember Get cp just beyond last char in range
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//@cmember Get range ends and count
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LONG GetRange (LONG& cpMin, LONG& cpMost) const;
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BOOL Set(LONG cp, LONG cch);
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LONG SetCp(LONG cp);
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void SetExtend(unsigned f) {_fExtend = f;}
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LONG GetAdjustedTextLength() const
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{return GetPed()->GetAdjustedTextLength();}
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// Range specific methods
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LONG Advance(LONG cch);
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void Collapser(long fStart);
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void FlipRange();
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LONG CleanseAndReplaceRange (LONG cchS, WCHAR const *pchS, BOOL fTestLimit,
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IUndoBuilder *publdr, WCHAR *pchD = NULL, LONG* pcchMove = NULL, DWORD dwFlags = 0);
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LONG CheckLimitReplaceRange (LONG cch, WCHAR const *pch,
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BOOL fTestLimit, IUndoBuilder *publdr, DWORD dwCharFlags,
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LONG *pcchMove, LONG cpFirst, int iMatchCurrent, DWORD dwFlags);
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HRESULT HexToUnicode (IUndoBuilder *publdr);
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HRESULT UnicodeToHex (IUndoBuilder *publdr);
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void Delete(IUndoBuilder *publdr, SELRR selaemode);
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void DeleteTerminatingEOP(IUndoBuilder *publdr);
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BOOL AdjustEndEOP (EOPADJUST NewChars);
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// Outline management
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void CheckOutlineLevel(IUndoBuilder *publdr);
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HRESULT ExpandOutline (LONG Level, BOOL fWholeDocument);
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HRESULT OutlineExpander(LONG Level, BOOL fWholeDocument);
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HRESULT Promote (LPARAM lparam, IUndoBuilder *publdr);
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// ReplaceRange must be virtual since the callers of
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// CLightDTEngine::CutRangeToClipboard() cast CTxtSelection* to CTxtRange*
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virtual LONG ReplaceRange(LONG cchNew, TCHAR const *pch, IUndoBuilder *publdr,
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SELRR selaemode, LONG *pcchMove = NULL, DWORD dwFlags = 0);
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virtual BOOL Update(BOOL fScrollIntoView);
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// Rich-text methods
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enum { PROTECTED_YES, PROTECTED_NO, PROTECTED_ASK };
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// Get/Set Char/Para Format methods
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void Update_iFormat(LONG iFmtDefault);
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DWORD GetCharSetMask(BOOL fUseDocFormat = FALSE); //@cmember Get range charset mask
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LONG Get_iCF(); //@cmember Get range CF index
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LONG Get_iFormat() {return _iFormat;}//@cmember Get _iFormat for quick peek
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LONG GetiFormat() const;
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BOOL Set_iCF(LONG iFormat); //@cmember Set range CF index
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LONG Get_iPF(); //@cmember Get active end PF index
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int IsProtected(LONG iDirection); //@cmember Is range protected?
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BOOL IsZombie() {return !GetPed();} //@cmember Is range zombied?
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BOOL WriteAccessDenied ();
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DWORD GetCharFormat(CCharFormat *pCF, DWORD flags = 0) const;
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DWORD GetParaFormat(CParaFormat *pPF, DWORD flags = 0) const;
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void SetDragProtection(BOOL fSet) // Convinces range it's protected
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{_fDragProtection = fSet;} // w/o modifying backing store
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HRESULT CharFormatSetter (const CCharFormat *pCF, DWORD dwMask);
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HRESULT ParaFormatSetter (const CParaFormat *pPF, DWORD dwMask);
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HRESULT SetCharFormat(const CCharFormat *pCF, DWORD flags,
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IUndoBuilder *publdr, DWORD dwMask, DWORD dwMask2);
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HRESULT SetParaFormat(const CParaFormat *pPF,
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IUndoBuilder *publdr, DWORD dwMask);
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HRESULT SetParaStyle (const CParaFormat *pPF,
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IUndoBuilder *publdr, DWORD dwMask);
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//@cmember Format range CharSets
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// Complex script feature :- Itemization
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BOOL ItemizeRuns(IUndoBuilder *publdr, BOOL fUnicodeBiDi = FALSE, BOOL fUseCtxLevel = FALSE);
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HRESULT BiDiLevelFromFSM (const CBiDiFSM* pfsm);
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LONG GetRunsPF (CRchTxtPtr* prtp, CFormatRunPtr* prpPF, LONG& cchLeft);
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#ifdef DEBUG
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void DebugFont (void);
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#endif
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// Find enclosing unit methods
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HRESULT Expander (long Unit, BOOL fExtend, LONG *pDelta,
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LONG *pcpMin, LONG *pcpMost);
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void FindAttributes (LONG *pcpMin, LONG *pcpMost, LONG Unit) const;
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void FindCell (LONG *pcpMin, LONG *pcpMost) const;
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BOOL FindObject (LONG *pcpMin, LONG *pcpMost) const;
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void FindParagraph (LONG *pcpMin, LONG *pcpMost) const;
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void FindSentence (LONG *pcpMin, LONG *pcpMost) const;
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BOOL FindVisibleRange(LONG *pcpMin, LONG *pcpMost) const;
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void FindWord (LONG *pcpMin, LONG *pcpMost,
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FINDWORD_TYPE type)const;
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LONG AdvanceCRLF();
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LONG BackupCRLF(BOOL fDiacriticCheck = TRUE);
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LONG FindWordBreak(INT action);
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LONG SnapToCluster(INT iDirection = 0);
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void ValidateRange();
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void SetUseiFormat(BOOL fUseiFormat) {_fUseiFormat = fUseiFormat;}
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// IUnknown methods
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STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
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STDMETHOD_(ULONG, AddRef)();
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STDMETHOD_(ULONG, Release)();
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// IDispatch methods
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STDMETHODIMP GetTypeInfoCount(UINT * pctinfo);
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STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo ** pptinfo);
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STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR ** rgszNames, UINT cNames,
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LCID lcid, DISPID * rgdispid) ;
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STDMETHODIMP Invoke(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags,
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DISPPARAMS * pdispparams, VARIANT * pvarResult,
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EXCEPINFO * pexcepinfo, UINT * puArgErr) ;
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// ITextRange methods
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STDMETHODIMP GetText (BSTR *pbstr);
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STDMETHODIMP SetText (BSTR bstr);
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STDMETHODIMP GetChar (long *pch);
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STDMETHODIMP SetChar (long ch);
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STDMETHODIMP GetDuplicate (ITextRange **ppRange);
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STDMETHODIMP GetFormattedText (ITextRange **ppRange);
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STDMETHODIMP SetFormattedText (ITextRange *pRange);
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STDMETHODIMP GetStart (long *pcpFirst);
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STDMETHODIMP SetStart (long cpFirst);
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STDMETHODIMP GetEnd (long *pcpLim);
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STDMETHODIMP SetEnd (long cpLim);
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STDMETHODIMP GetFont (ITextFont **pFont);
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STDMETHODIMP SetFont (ITextFont *pFont);
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STDMETHODIMP GetPara (ITextPara **pPara);
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STDMETHODIMP SetPara (ITextPara *pPara);
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STDMETHODIMP GetStoryLength (long *pcch);
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STDMETHODIMP GetStoryType (long *pValue);
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STDMETHODIMP Collapse (long bStart);
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STDMETHODIMP Expand (long Unit, long *pDelta);
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STDMETHODIMP GetIndex (long Unit, long *pIndex);
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STDMETHODIMP SetIndex (long Unit, long Index, long Extend);
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STDMETHODIMP SetRange (long cpActive, long cpOther);
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STDMETHODIMP InRange (ITextRange * pRange, long *pb);
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STDMETHODIMP InStory (ITextRange * pRange, long *pb);
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STDMETHODIMP IsEqual (ITextRange * pRange, long *pb);
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STDMETHODIMP Select ();
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STDMETHODIMP StartOf (long Unit, long Extend, long * pDelta);
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STDMETHODIMP EndOf (long Unit, long Extend, long * pDelta);
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STDMETHODIMP Move (long Unit, long Count, long * pDelta);
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STDMETHODIMP MoveStart (long Unit, long Count, long * pDelta);
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STDMETHODIMP MoveEnd (long Unit, long Count, long * pDelta);
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STDMETHODIMP MoveWhile (VARIANT * Cset, long Count, long * pDelta);
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STDMETHODIMP MoveStartWhile (VARIANT * Cset, long Count, long * pDelta);
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STDMETHODIMP MoveEndWhile (VARIANT * Cset, long Count, long * pDelta);
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STDMETHODIMP MoveUntil (VARIANT FAR* Cset, long Count, long * pDelta);
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STDMETHODIMP MoveStartUntil (VARIANT * Cset, long Count, long * pDelta);
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STDMETHODIMP MoveEndUntil (VARIANT * Cset, long Count, long * pDelta);
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STDMETHODIMP FindText (BSTR bstr, long cch, long Flags, long * pLength);
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STDMETHODIMP FindTextStart (BSTR bstr, long cch, long Flags, long * pLength);
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STDMETHODIMP FindTextEnd (BSTR bstr, long cch, long Flags, long * pLength);
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STDMETHODIMP Delete (long Unit, long Count, long * pDelta);
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STDMETHODIMP Cut (VARIANT * ppIDataObject);
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STDMETHODIMP Copy (VARIANT * ppIDataObject);
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STDMETHODIMP Paste (VARIANT * pIDataObject, long Format);
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STDMETHODIMP CanPaste (VARIANT * pIDataObject, long Format, long * pb);
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STDMETHODIMP CanEdit (long * pbCanEdit);
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STDMETHODIMP ChangeCase (long Type);
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STDMETHODIMP GetPoint (long Type, long * px, long * py);
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STDMETHODIMP SetPoint (long x, long y, long Type, long Extend);
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STDMETHODIMP ScrollIntoView (long Value);
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STDMETHODIMP GetEmbeddedObject (IUnknown ** ppv);
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// ITextSelection methods
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STDMETHODIMP GetFlags (long * pFlags) ;
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STDMETHODIMP SetFlags (long Flags) ;
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STDMETHODIMP GetType (long * pType) ;
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STDMETHODIMP MoveLeft (long Unit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveRight(long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveUp (long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveDown (long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP HomeKey (long pUnit, long Extend, long *pDelta) ;
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STDMETHODIMP EndKey (long pUnit, long Extend, long *pDelta) ;
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STDMETHODIMP TypeText (BSTR bstr) ;
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//@access Private ITextRange helper methods
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private:
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void RangeValidateCp (LONG cp, LONG cch);
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LONG Comparer (ITextRange * pv);
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LONG SpanSubstring (CUniscribe* pusp, CFormatRunPtr* pcrp, WCHAR* pwchString,
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LONG cchString, WORD& uSubStrLevel, DWORD dwInFlags, CCharFlags* pCharflags,
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WORD& wBiDiLangId);
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HRESULT EndSetter(LONG cp, BOOL fOther);
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HRESULT Finder (BSTR bstr, long Count, long Flags, LONG *pDelta,
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MOVES Mode);
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HRESULT GetLong (LONG lValue, long *pLong);
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HRESULT IsTrue (BOOL f, long *pB);
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HRESULT Matcher (VARIANT *Cset, long Count, LONG *pDelta, MOVES Mode,
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MATCHES Match);
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HRESULT Mover (long Unit, long Count, LONG *pDelta, MOVES Mode);
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HRESULT Replacer (LONG cchNew, TCHAR const *pch, DWORD dwFlags = 0);
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LONG CalcTextLenNotInRange();
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};
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// Useful Unicode range definitions for use with MoveWhile/Until methods
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#define CodeRange(n, m) 0x8000000 | ((m) - (n)) << 16 | n
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#define CR_ASCII CodeRange(0x0, 0x7f)
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#define CR_ANSI CodeRange(0x0, 0xff)
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#define CR_ASCIIPrint CodeRange(0x20, 0x7e)
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#define CR_Latin1 CodeRange(0x20, 0xff)
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#define CR_Latin1Supp CodeRange(0xa0, 0xff)
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#define CR_LatinXA CodeRange(0x100, 0x17f)
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#define CR_LatinXB CodeRange(0x180, 0x24f)
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#define CR_IPAX CodeRange(0x250, 0x2af)
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#define CR_SpaceMod CodeRange(0x2b0, 0x2ff)
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#define CR_Combining CodeRange(0x300, 0x36f)
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#define CR_Greek CodeRange(0x370, 0x3ff)
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#define CR_BasicGreek CodeRange(0x370, 0x3cf)
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#define CR_GreekSymbols CodeRange(0x3d0, 0x3ff)
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#define CR_Cyrillic CodeRange(0x400, 0x4ff)
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#define CR_Armenian CodeRange(0x530, 0x58f)
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#define CR_Hebrew CodeRange(0x590, 0x5ff)
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#define CR_BasicHebrew CodeRange(0x5d0, 0x5ea)
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#define CR_HebrewXA CodeRange(0x590, 0x5cf)
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#define CR_HebrewXB CodeRange(0x5eb, 0x5ff)
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#define CR_Arabic CodeRange(0x600, 0x6ff)
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#define CR_BasicArabic CodeRange(0x600, 0x652)
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#define CR_ArabicX CodeRange(0x653, 0x6ff)
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#define CR_Devengari CodeRange(0x900, 0x97f)
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#define CR_Bengali CodeRange(0x980, 0x9ff)
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#define CR_Gurmukhi CodeRange(0xa00, 0xa7f)
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#define CR_Gujarati CodeRange(0xa80, 0xaff)
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#define CR_Oriya CodeRange(0xb00, 0xb7f)
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#define CR_Tamil CodeRange(0xb80, 0xbff)
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#define CR_Teluga CodeRange(0xc00, 0xc7f)
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#define CR_Kannada CodeRange(0xc80, 0xcff)
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#define CR_Malayalam CodeRange(0xd00, 0xd7f)
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#define CR_Thai CodeRange(0xe00, 0xe7f)
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#define CR_Lao CodeRange(0xe80, 0xeff)
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#define CR_GeorgianX CodeRange(0x10a0, 0xa0cf)
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#define CR_BascGeorgian CodeRange(0x10d0, 0x10ff)
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#define CR_Hanguljamo CodeRange(0x1100, 0x11ff)
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#define CR_LatinXAdd CodeRange(0x1e00, 0x1eff)
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#define CR_GreekX CodeRange(0x1f00, 0x1fff)
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#define CR_GenPunct CodeRange(0x2000, 0x206f)
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#define CR_SuperScript CodeRange(0x2070, 0x207f)
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#define CR_SubScript CodeRange(0x2080, 0x208f)
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#define CR_SubSuperScrp CodeRange(0x2070, 0x209f)
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#define CR_Currency CodeRange(0x20a0, 0x20cf)
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#define CR_CombMarkSym CodeRange(0x20d0, 0x20ff)
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#define CR_LetterLike CodeRange(0x2100, 0x214f)
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#define CR_NumberForms CodeRange(0x2150, 0x218f)
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#define CR_Arrows CodeRange(0x2190, 0x21ff)
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#define CR_MathOps CodeRange(0x2200, 0x22ff)
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#define CR_MiscTech CodeRange(0x2300, 0x23ff)
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#define CR_CtrlPictures CodeRange(0x2400, 0x243f)
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#define CR_OptCharRecog CodeRange(0x2440, 0x245f)
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#define CR_EnclAlphaNum CodeRange(0x2460, 0x24ff)
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#define CR_BoxDrawing CodeRange(0x2500, 0x257f)
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#define CR_BlockElement CodeRange(0x2580, 0x259f)
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#define CR_GeometShapes CodeRange(0x25a0, 0x25ff)
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#define CR_MiscSymbols CodeRange(0x2600, 0x26ff)
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#define CR_Dingbats CodeRange(0x2700, 0x27bf)
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#define CR_CJKSymPunct CodeRange(0x3000, 0x303f)
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#define CR_Hiragana CodeRange(0x3040, 0x309f)
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#define CR_Katakana CodeRange(0x30a0, 0x30ff)
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#define CR_Bopomofo CodeRange(0x3100, 0x312f)
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#define CR_HangulJamo CodeRange(0x3130, 0x318f)
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#define CR_CJLMisc CodeRange(0x3190, 0x319f)
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#define CR_EnclCJK CodeRange(0x3200, 0x32ff)
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#define CR_CJKCompatibl CodeRange(0x3300, 0x33ff)
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#define CR_Hangul CodeRange(0x3400, 0x3d2d)
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#define CR_HangulA CodeRange(0x3d2e, 0x44b7)
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#define CR_HangulB CodeRange(0x44b8, 0x4dff)
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#define CR_CJKIdeograph CodeRange(0x4e00, 0x9fff)
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#define CR_PrivateUse CodeRange(0xe000, 0xf800)
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#define CR_CJKCompIdeog CodeRange(0xf900, 0xfaff)
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#define CR_AlphaPres CodeRange(0xfb00, 0xfb4f)
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#define CR_ArabicPresA CodeRange(0xfb50, 0xfdff)
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#define CR_CombHalfMark CodeRange(0xfe20, 0xfe2f)
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#define CR_CJKCompForm CodeRange(0xfe30, 0xfe4f)
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#define CR_SmallFormVar CodeRange(0xfe50, 0xfe6f)
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#define CR_ArabicPresB CodeRange(0xfe70, 0xfefe)
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#define CR_HalfFullForm CodeRange(0xff00, 0xffef)
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#define CR_Specials CodeRange(0xfff0, 0xfffd)
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#endif
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