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wine/dlls/riched20/editor.h
Dylan Smith 5d74f58382 richedit: Actually store end of line string for end paragraph runs. 
Previously a count of the carraige returns and line feeds were stored
for end of paragraph runs, and a paragraph sign was stored as the actual
string.  This was causing many special cases where the length of the
run needed to be determined differently if the run was or wasn't an
end of paragraph run.

There wasn't any use for storing the paragraph sign unless some drawing
code gets commented out to allow the end paragraphs to be shown,
therefore I changed the code to store the actual string that gets
retrieved by WM_GETTEXT.
2009-01-28 12:11:36 +01:00

356 lines
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/*
* RichEdit - prototypes for functions and macro definitions
*
* Copyright 2004 by Krzysztof Foltman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "editstr.h"
#include "wine/unicode.h"
struct _RTF_Info;
extern HANDLE me_heap;
static inline void * __WINE_ALLOC_SIZE(1) heap_alloc( size_t len )
{
return HeapAlloc( me_heap, 0, len );
}
static inline BOOL heap_free( void *ptr )
{
return HeapFree( me_heap, 0, ptr );
}
static inline void * __WINE_ALLOC_SIZE(2) heap_realloc( void *ptr, size_t len )
{
return HeapReAlloc( me_heap, 0, ptr, len );
}
#define ALLOC_OBJ(type) heap_alloc(sizeof(type))
#define ALLOC_N_OBJ(type, count) heap_alloc((count)*sizeof(type))
#define FREE_OBJ(ptr) heap_free(ptr)
#define RUN_IS_HIDDEN(run) ((run)->style->fmt.dwMask & CFM_HIDDEN \
&& (run)->style->fmt.dwEffects & CFE_HIDDEN)
#define InitFormatEtc(fe, cf, med) \
{\
(fe).cfFormat=cf;\
(fe).dwAspect=DVASPECT_CONTENT;\
(fe).ptd=NULL;\
(fe).tymed=med;\
(fe).lindex=-1;\
};
/* style.c */
ME_Style *ME_MakeStyle(CHARFORMAT2W *style);
void ME_AddRefStyle(ME_Style *item);
void ME_ReleaseStyle(ME_Style *item);
ME_Style *ME_GetInsertStyle(ME_TextEditor *editor, int nCursor);
ME_Style *ME_ApplyStyle(ME_Style *sSrc, CHARFORMAT2W *style);
HFONT ME_SelectStyleFont(ME_Context *c, ME_Style *s);
void ME_UnselectStyleFont(ME_Context *c, ME_Style *s, HFONT hOldFont);
void ME_InitCharFormat2W(CHARFORMAT2W *pFmt);
void ME_SaveTempStyle(ME_TextEditor *editor);
void ME_ClearTempStyle(ME_TextEditor *editor);
void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048]);
void ME_DumpStyle(ME_Style *s);
CHARFORMAT2W *ME_ToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from);
void ME_CopyToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from);
void ME_CopyToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from);
void ME_CopyCharFormat(CHARFORMAT2W *pDest, const CHARFORMAT2W *pSrc); /* only works with 2W structs */
void ME_CharFormatFromLogFont(HDC hDC, const LOGFONTW *lf, CHARFORMAT2W *fmt); /* ditto */
/* list.c */
void ME_InsertBefore(ME_DisplayItem *diWhere, ME_DisplayItem *diWhat);
void ME_Remove(ME_DisplayItem *diWhere);
ME_DisplayItem *ME_FindItemBack(ME_DisplayItem *di, ME_DIType nTypeOrClass);
ME_DisplayItem *ME_FindItemFwd(ME_DisplayItem *di, ME_DIType nTypeOrClass);
ME_DisplayItem *ME_FindItemBackOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass);
ME_DisplayItem *ME_FindItemFwdOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass);
ME_DisplayItem *ME_MakeDI(ME_DIType type);
void ME_DestroyDisplayItem(ME_DisplayItem *item);
void ME_DumpDocument(ME_TextBuffer *buffer);
const char *ME_GetDITypeName(ME_DIType type);
/* string.c */
ME_String *ME_MakeString(LPCWSTR szText);
ME_String *ME_MakeStringN(LPCWSTR szText, int nMaxChars);
ME_String *ME_MakeStringR(WCHAR cRepeat, int nMaxChars);
ME_String *ME_MakeStringB(int nMaxChars);
ME_String *ME_StrDup(const ME_String *s);
void ME_DestroyString(ME_String *s);
void ME_AppendString(ME_String *s1, const ME_String *s2);
ME_String *ME_ConcatString(const ME_String *s1, const ME_String *s2);
ME_String *ME_VSplitString(ME_String *orig, int nVPos);
int ME_IsWhitespaces(const ME_String *s);
int ME_IsSplitable(const ME_String *s);
/* int ME_CalcSkipChars(ME_String *s); */
int ME_StrLen(const ME_String *s);
int ME_StrVLen(const ME_String *s);
int ME_FindNonWhitespaceV(const ME_String *s, int nVChar);
int ME_FindWhitespaceV(ME_String *s, int nVChar);
int ME_CallWordBreakProc(ME_TextEditor *editor, ME_String *str, INT start, INT code);
int ME_GetCharFwd(const ME_String *s, int nPos); /* get char starting from start */
int ME_GetCharBack(const ME_String *s, int nPos); /* get char starting from \0 */
int ME_StrRelPos(const ME_String *s, int nVChar, int *pRelChars);
int ME_StrRelPos2(const ME_String *s, int nVChar, int nRelChars);
int ME_VPosToPos(ME_String *s, int nVPos);
int ME_PosToVPos(const ME_String *s, int nPos);
void ME_StrDeleteV(ME_String *s, int nVChar, int nChars);
/* smart helpers for A<->W conversions, they reserve/free memory and call MultiByte<->WideChar functions */
LPWSTR ME_ToUnicode(BOOL unicode, LPVOID psz);
void ME_EndToUnicode(BOOL unicode, LPVOID psz);
static inline int ME_IsWSpace(WCHAR ch)
{
return ch > '\0' && ch <= ' ';
}
static inline int ME_CharCompare(WCHAR a, WCHAR b, int caseSensitive)
{
return caseSensitive ? (a == b) : (toupperW(a) == toupperW(b));
}
/* note: those two really return the first matching offset (starting from EOS)+1
* in other words, an offset of the first trailing white/black */
int ME_ReverseFindNonWhitespaceV(const ME_String *s, int nVChar);
int ME_ReverseFindWhitespaceV(const ME_String *s, int nVChar);
/* row.c */
ME_DisplayItem *ME_FindRowStart(ME_Context *c, ME_DisplayItem *run, int nRelPos);
ME_DisplayItem *ME_RowStart(ME_DisplayItem *item);
/* ME_DisplayItem *ME_RowEnd(ME_DisplayItem *item); */
void ME_RenumberParagraphs(ME_DisplayItem *item); /* TODO */
ME_DisplayItem *ME_FindRowWithNumber(ME_TextEditor *editor, int nRow);
int ME_RowNumberFromCharOfs(ME_TextEditor *editor, int nOfs);
/* run.c */
ME_DisplayItem *ME_MakeRun(ME_Style *s, ME_String *strData, int nFlags);
/* note: ME_InsertRun inserts a copy of the specified run - so you need to destroy the original */
ME_DisplayItem *ME_InsertRun(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem *pItem);
ME_DisplayItem *ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor,
ME_Style *style, const WCHAR *str, int len, int flags);
void ME_CheckCharOffsets(ME_TextEditor *editor);
void ME_PropagateCharOffset(ME_DisplayItem *p, int shift);
int ME_CharFromPoint(ME_Context *c, int cx, ME_Run *run);
/* this one accounts for 1/2 char tolerance */
int ME_CharFromPointCursor(ME_TextEditor *editor, int cx, ME_Run *run);
int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset);
int ME_GetLastSplittablePlace(ME_Context *c, ME_Run *run);
int ME_CanJoinRuns(const ME_Run *run1, const ME_Run *run2);
void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p);
ME_DisplayItem *ME_SplitRun(ME_WrapContext *wc, ME_DisplayItem *item, int nChar);
ME_DisplayItem *ME_SplitRunSimple(ME_TextEditor *editor, ME_DisplayItem *item, int nChar);
int ME_FindSplitPoint(ME_Context *c, POINT *pt, ME_Run *run, int desperate);
void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run);
ME_DisplayItem *ME_SplitFurther(ME_TextEditor *editor, ME_DisplayItem *run);
void ME_CalcRunExtent(ME_Context *c, const ME_Paragraph *para, int startx, ME_Run *run);
SIZE ME_GetRunSize(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen, int startx);
void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor);
void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppRun, int *pOfs);
int ME_CharOfsFromRunOfs(ME_TextEditor *editor, ME_DisplayItem *pRun, int nOfs);
void ME_SkipAndPropagateCharOffset(ME_DisplayItem *p, int shift);
void ME_SetCharFormat(ME_TextEditor *editor, int nFrom, int nLen, CHARFORMAT2W *pFmt);
void ME_SetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt);
void ME_GetCharFormat(ME_TextEditor *editor, int nFrom, int nLen, CHARFORMAT2W *pFmt);
void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt);
void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt);
void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod);
/* caret.c */
int ME_SetSelection(ME_TextEditor *editor, int from, int to);
void ME_HideCaret(ME_TextEditor *ed);
void ME_ShowCaret(ME_TextEditor *ed);
void ME_MoveCaret(ME_TextEditor *ed);
int ME_CharFromPos(ME_TextEditor *editor, int x, int y, BOOL *isExact);
void ME_LButtonDown(ME_TextEditor *editor, int x, int y, int clickNum);
void ME_MouseMove(ME_TextEditor *editor, int x, int y);
BOOL ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor, int nChars);
void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
const WCHAR *str, int len, ME_Style *style);
void ME_InsertEndRowFromCursor(ME_TextEditor *editor, int nCursor);
BOOL ME_ArrowKey(ME_TextEditor *ed, int nVKey, BOOL extend, BOOL ctrl);
void ME_MustBeWrapped(ME_Context *c, ME_DisplayItem *para);
void ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
int *x, int *y, int *height);
int ME_GetCursorOfs(ME_TextEditor *editor, int nCursor);
void ME_GetSelection(ME_TextEditor *editor, int *from, int *to);
int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to);
BOOL ME_IsSelection(ME_TextEditor *editor);
void ME_DeleteSelection(ME_TextEditor *editor);
void ME_SendSelChange(ME_TextEditor *editor);
void ME_InsertOLEFromCursor(ME_TextEditor *editor, const REOBJECT* reo, int nCursor);
BOOL ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars, BOOL bForce);
int ME_GetTextLength(ME_TextEditor *editor);
int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how);
ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor);
/* context.c */
void ME_InitContext(ME_Context *c, ME_TextEditor *editor, HDC hDC);
void ME_DestroyContext(ME_Context *c);
/* wrap.c */
BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor);
void ME_InvalidateMarkedParagraphs(ME_TextEditor *editor);
void ME_SendRequestResize(ME_TextEditor *editor, BOOL force);
/* para.c */
ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *run);
void ME_GetSelectionParas(ME_TextEditor *editor, ME_DisplayItem **para, ME_DisplayItem **para_end);
void ME_MakeFirstParagraph(ME_TextEditor *editor);
ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *rp, ME_Style *style, ME_String *eol_str, int paraFlags);
ME_DisplayItem *ME_JoinParagraphs(ME_TextEditor *editor, ME_DisplayItem *tp,
BOOL keepFirstParaFormat);
void ME_DumpParaStyle(ME_Paragraph *s);
void ME_DumpParaStyleToBuf(const PARAFORMAT2 *pFmt, char buf[2048]);
BOOL ME_SetSelectionParaFormat(ME_TextEditor *editor, const PARAFORMAT2 *pFmt);
void ME_GetSelectionParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt);
/* marks from first up to (but not including) last */
void ME_MarkForPainting(ME_TextEditor *editor, ME_DisplayItem *first, const ME_DisplayItem *last);
void ME_MarkAllForWrapping(ME_TextEditor *editor);
void ME_SetDefaultParaFormat(PARAFORMAT2 *pFmt);
/* paint.c */
void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, const RECT *rcUpdate);
void ME_Repaint(ME_TextEditor *editor);
void ME_RewrapRepaint(ME_TextEditor *editor);
void ME_UpdateRepaint(ME_TextEditor *editor);
void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor);
void ME_InvalidateSelection(ME_TextEditor *editor);
BOOL ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator);
int ME_twips2pointsX(ME_Context *c, int x);
int ME_twips2pointsY(ME_Context *c, int y);
/* scroll functions in paint.c */
void ME_ScrollAbs(ME_TextEditor *editor, int x, int y);
void ME_HScrollAbs(ME_TextEditor *editor, int x);
void ME_VScrollAbs(ME_TextEditor *editor, int y);
void ME_ScrollUp(ME_TextEditor *editor, int cy);
void ME_ScrollDown(ME_TextEditor *editor, int cy);
void ME_ScrollLeft(ME_TextEditor *editor, int cx);
void ME_ScrollRight(ME_TextEditor *editor, int cx);
void ME_UpdateScrollBar(ME_TextEditor *editor);
/* other functions in paint.c */
int ME_GetParaBorderWidth(ME_TextEditor *editor, int);
int ME_GetParaLineSpace(ME_Context *c, ME_Paragraph*);
/* richole.c */
LRESULT CreateIRichEditOle(ME_TextEditor *editor, LPVOID *);
void ME_DrawOLE(ME_Context *c, int x, int y, ME_Run* run, ME_Paragraph *para, BOOL selected);
void ME_GetOLEObjectSize(ME_Context *c, ME_Run *run, SIZE *pSize);
void ME_CopyReObject(REOBJECT* dst, const REOBJECT* src);
void ME_DeleteReObject(REOBJECT* reo);
/* editor.c */
ME_TextEditor *ME_MakeEditor(ITextHost *texthost, BOOL bEmulateVersion10);
LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
LPARAM lParam, BOOL unicode, HRESULT* phresult);
void ME_SendOldNotify(ME_TextEditor *editor, int nCode);
int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, BOOL bCRLF);
void ME_RTFCharAttrHook(struct _RTF_Info *info);
void ME_RTFParAttrHook(struct _RTF_Info *info);
void ME_RTFTblAttrHook(struct _RTF_Info *info);
void ME_RTFSpecialCharHook(struct _RTF_Info *info);
void ME_StreamInFill(ME_InStream *stream);
extern int me_debug;
extern void DoWrap(ME_TextEditor *editor);
/* table.c */
BOOL ME_IsInTable(ME_DisplayItem *pItem);
ME_DisplayItem *ME_InsertTableRowStartFromCursor(ME_TextEditor *editor);
ME_DisplayItem *ME_InsertTableRowStartAtParagraph(ME_TextEditor *editor,
ME_DisplayItem *para);
ME_DisplayItem *ME_InsertTableCellFromCursor(ME_TextEditor *editor);
ME_DisplayItem *ME_InsertTableRowEndFromCursor(ME_TextEditor *editor);
ME_DisplayItem *ME_GetTableRowEnd(ME_DisplayItem *para);
ME_DisplayItem *ME_GetTableRowStart(ME_DisplayItem *para);
void ME_CheckTablesForCorruption(ME_TextEditor *editor);
void ME_ProtectPartialTableDeletion(ME_TextEditor *editor, int nOfs,int *nChars);
ME_DisplayItem* ME_AppendTableRow(ME_TextEditor *editor, ME_DisplayItem *table_row);
void ME_TabPressedInTable(ME_TextEditor *editor, BOOL bSelectedRow);
void ME_MoveCursorFromTableRowStartParagraph(ME_TextEditor *editor);
struct RTFTable *ME_MakeTableDef(ME_TextEditor *editor);
void ME_InitTableDef(ME_TextEditor *editor, struct RTFTable *tableDef);
/* txthost.c */
ITextHost *ME_CreateTextHost(HWND hwnd, BOOL bEmulateVersion10);
#ifdef __i386__ /* Use wrappers to perform thiscall on i386 */
#define TXTHOST_VTABLE(This) (&itextHostStdcallVtbl)
#else /* __i386__ */
#define TXTHOST_VTABLE(This) (This)->lpVtbl
#endif /* __i386__ */
/*** ITextHost methods ***/
#define ITextHost_TxGetDC(This) TXTHOST_VTABLE(This)->TxGetDC(This)
#define ITextHost_TxReleaseDC(This,a) TXTHOST_VTABLE(This)->TxReleaseDC(This,a)
#define ITextHost_TxShowScrollBar(This,a,b) TXTHOST_VTABLE(This)->TxShowScrollBar(This,a,b)
#define ITextHost_TxEnableScrollBar(This,a,b) TXTHOST_VTABLE(This)->TxEnableScrollBar(This,a,b)
#define ITextHost_TxSetScrollRange(This,a,b,c,d) TXTHOST_VTABLE(This)->TxSetScrollRange(This,a,b,c,d)
#define ITextHost_TxSetScrollPos(This,a,b,c) TXTHOST_VTABLE(This)->TxSetScrollPos(This,a,b,c)
#define ITextHost_TxInvalidateRect(This,a,b) TXTHOST_VTABLE(This)->TxInvalidateRect(This,a,b)
#define ITextHost_TxViewChange(This,a) TXTHOST_VTABLE(This)->TxViewChange(This,a)
#define ITextHost_TxCreateCaret(This,a,b,c) TXTHOST_VTABLE(This)->TxCreateCaret(This,a,b,c)
#define ITextHost_TxShowCaret(This,a) TXTHOST_VTABLE(This)->TxShowCaret(This,a)
#define ITextHost_TxSetCaretPos(This,a,b) TXTHOST_VTABLE(This)->TxSetCaretPos(This,a,b)
#define ITextHost_TxSetTimer(This,a,b) TXTHOST_VTABLE(This)->TxSetTimer(This,a,b)
#define ITextHost_TxKillTimer(This,a) TXTHOST_VTABLE(This)->TxKillTimer(This,a)
#define ITextHost_TxScrollWindowEx(This,a,b,c,d,e,f,g) TXTHOST_VTABLE(This)->TxScrollWindowEx(This,a,b,c,d,e,f,g)
#define ITextHost_TxSetCapture(This,a) TXTHOST_VTABLE(This)->TxSetCapture(This,a)
#define ITextHost_TxSetFocus(This) TXTHOST_VTABLE(This)->TxSetFocus(This)
#define ITextHost_TxSetCursor(This,a,b) TXTHOST_VTABLE(This)->TxSetCursor(This,a,b)
#define ITextHost_TxScreenToClient(This,a) TXTHOST_VTABLE(This)->TxScreenToClient(This,a)
#define ITextHost_TxClientToScreen(This,a) TXTHOST_VTABLE(This)->TxClientToScreen(This,a)
#define ITextHost_TxActivate(This,a) TXTHOST_VTABLE(This)->TxActivate(This,a)
#define ITextHost_TxDeactivate(This,a) TXTHOST_VTABLE(This)->TxDeactivate(This,a)
#define ITextHost_TxGetClientRect(This,a) TXTHOST_VTABLE(This)->TxGetClientRect(This,a)
#define ITextHost_TxGetViewInset(This,a) TXTHOST_VTABLE(This)->TxGetViewInset(This,a)
#define ITextHost_TxGetCharFormat(This,a) TXTHOST_VTABLE(This)->TxGetCharFormat(This,a)
#define ITextHost_TxGetParaFormat(This,a) TXTHOST_VTABLE(This)->TxGetParaFormat(This,a)
#define ITextHost_TxGetSysColor(This,a) TXTHOST_VTABLE(This)->TxGetSysColor(This,a)
#define ITextHost_TxGetBackStyle(This,a) TXTHOST_VTABLE(This)->TxGetBackStyle(This,a)
#define ITextHost_TxGetMaxLength(This,a) TXTHOST_VTABLE(This)->TxGetMaxLength(This,a)
#define ITextHost_TxGetScrollBars(This,a) TXTHOST_VTABLE(This)->TxGetScrollBars(This,a)
#define ITextHost_TxGetPasswordChar(This,a) TXTHOST_VTABLE(This)->TxGetPasswordChar(This,a)
#define ITextHost_TxGetAcceleratorPos(This,a) TXTHOST_VTABLE(This)->TxGetAcceleratorPos(This,a)
#define ITextHost_TxGetExtent(This,a) TXTHOST_VTABLE(This)->TxGetExtent(This,a)
#define ITextHost_OnTxCharFormatChange(This,a) TXTHOST_VTABLE(This)->OnTxCharFormatChange(This,a)
#define ITextHost_OnTxParaFormatChange(This,a) TXTHOST_VTABLE(This)->OnTxParaFormatChange(This,a)
#define ITextHost_TxGetPropertyBits(This,a,b) TXTHOST_VTABLE(This)->TxGetPropertyBits(This,a,b)
#define ITextHost_TxNotify(This,a,b) TXTHOST_VTABLE(This)->TxNotify(This,a,b)
#define ITextHost_TxImmGetContext(This) TXTHOST_VTABLE(This)->TxImmGetContext(This)
#define ITextHost_TxImmReleaseContext(This,a) TXTHOST_VTABLE(This)->TxImmReleaseContext(This,a)
#define ITextHost_TxGetSelectionBarWidth(This,a) TXTHOST_VTABLE(This)->TxGetSelectionBarWidth(This,a)
/* undo.c */
ME_UndoItem *ME_AddUndoItem(ME_TextEditor *editor, ME_DIType type, const ME_DisplayItem *pdi);
void ME_CommitUndo(ME_TextEditor *editor);
void ME_ContinueCoalescingTransaction(ME_TextEditor *editor);
void ME_CommitCoalescingUndo(ME_TextEditor *editor);
BOOL ME_Undo(ME_TextEditor *editor);
BOOL ME_Redo(ME_TextEditor *editor);
void ME_EmptyUndoStack(ME_TextEditor *editor);
/* writer.c */
LRESULT ME_StreamOutRange(ME_TextEditor *editor, DWORD dwFormat, int nStart, int nTo, EDITSTREAM *stream);
LRESULT ME_StreamOut(ME_TextEditor *editor, DWORD dwFormat, EDITSTREAM *stream);
/* clipboard.c */
HRESULT ME_GetDataObject(ME_TextEditor *editor, const CHARRANGE *lpchrg, LPDATAOBJECT *lplpdataobj);
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