text: /*
   * 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 DECLSPEC_HIDDEN;
  
  #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;\
          };
  
  static inline WCHAR *get_text( const ME_Run *run, int offset )
  {
      return run->para->text->szData + run->nCharOfs + offset;
  }
  
  static inline const char *debugstr_run( const ME_Run *run )
  {
      return debugstr_wn( get_text( run, 0 ), run->len );
  }
  
  /* style.c */
  ME_Style *ME_MakeStyle(CHARFORMAT2W *style) DECLSPEC_HIDDEN;
  void ME_AddRefStyle(ME_Style *item) DECLSPEC_HIDDEN;
  void ME_DestroyStyle(ME_Style *item) DECLSPEC_HIDDEN;
  void ME_ReleaseStyle(ME_Style *item) DECLSPEC_HIDDEN;
  ME_Style *ME_GetInsertStyle(ME_TextEditor *editor, int nCursor) DECLSPEC_HIDDEN;
  ME_Style *ME_ApplyStyle(ME_TextEditor *ed, ME_Style *sSrc, CHARFORMAT2W *style) DECLSPEC_HIDDEN;
  HFONT ME_SelectStyleFont(ME_Context *c, ME_Style *s) DECLSPEC_HIDDEN;
  void ME_UnselectStyleFont(ME_Context *c, ME_Style *s, HFONT hOldFont) DECLSPEC_HIDDEN;
  void ME_InitCharFormat2W(CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_SaveTempStyle(ME_TextEditor *editor, ME_Style *style) DECLSPEC_HIDDEN;
  void ME_ClearTempStyle(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048]) DECLSPEC_HIDDEN;
  void ME_DumpStyle(ME_Style *s) DECLSPEC_HIDDEN;
  CHARFORMAT2W *ME_ToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from) DECLSPEC_HIDDEN;
  void ME_CopyToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from) DECLSPEC_HIDDEN;
  void ME_CopyCharFormat(CHARFORMAT2W *pDest, const CHARFORMAT2W *pSrc) DECLSPEC_HIDDEN; /* only works with 2W structs */
  void ME_CharFormatFromLogFont(HDC hDC, const LOGFONTW *lf, CHARFORMAT2W *fmt) DECLSPEC_HIDDEN; /* ditto */
  
  /* list.c */
  void ME_InsertBefore(ME_DisplayItem *diWhere, ME_DisplayItem *diWhat) DECLSPEC_HIDDEN;
  void ME_Remove(ME_DisplayItem *diWhere) DECLSPEC_HIDDEN;
  BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para) DECLSPEC_HIDDEN;
  BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_FindItemBack(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_FindItemFwd(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_FindItemBackOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_MakeDI(ME_DIType type) DECLSPEC_HIDDEN;
  void ME_DestroyDisplayItem(ME_DisplayItem *item) DECLSPEC_HIDDEN;
  void ME_DumpDocument(ME_TextBuffer *buffer) DECLSPEC_HIDDEN;
  
  /* string.c */
  ME_String *ME_MakeStringN(LPCWSTR szText, int nMaxChars) DECLSPEC_HIDDEN;
  ME_String *ME_MakeStringR(WCHAR cRepeat, int nMaxChars) DECLSPEC_HIDDEN;
  ME_String *ME_MakeStringConst(const WCHAR *str, int len) DECLSPEC_HIDDEN;
  ME_String *ME_MakeStringEmpty(int len) DECLSPEC_HIDDEN;
  void ME_DestroyString(ME_String *s) DECLSPEC_HIDDEN;
  BOOL ME_AppendString(ME_String *s, const WCHAR *append, int len) DECLSPEC_HIDDEN;
  ME_String *ME_VSplitString(ME_String *orig, int nVPos) DECLSPEC_HIDDEN;
  int ME_FindNonWhitespaceV(const ME_String *s, int nVChar) DECLSPEC_HIDDEN;
  int ME_CallWordBreakProc(ME_TextEditor *editor, WCHAR *str, INT len, INT start, INT code) DECLSPEC_HIDDEN;
  void ME_StrDeleteV(ME_String *s, int nVChar, int nChars) DECLSPEC_HIDDEN;
  BOOL ME_InsertString(ME_String *s, int ofs, const WCHAR *insert, int len) DECLSPEC_HIDDEN;
  
  #define CP_UNICODE 1200
  
  /* smart helpers for A<->W conversions, they reserve/free memory and call MultiByte<->WideChar functions */
  LPWSTR ME_ToUnicode(LONG codepage, LPVOID psz, INT *len) DECLSPEC_HIDDEN;
  void ME_EndToUnicode(LONG codepage, LPVOID psz) DECLSPEC_HIDDEN;
  
  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) DECLSPEC_HIDDEN;
  int ME_ReverseFindWhitespaceV(const ME_String *s, int nVChar) DECLSPEC_HIDDEN;
  
  /* row.c */
  ME_DisplayItem *ME_RowStart(ME_DisplayItem *item) DECLSPEC_HIDDEN;
  /* ME_DisplayItem *ME_RowEnd(ME_DisplayItem *item); */
  ME_DisplayItem *ME_FindRowWithNumber(ME_TextEditor *editor, int nRow) DECLSPEC_HIDDEN;
  int ME_RowNumberFromCharOfs(ME_TextEditor *editor, int nOfs) DECLSPEC_HIDDEN;
  
  /* run.c */
  ME_DisplayItem *ME_MakeRun(ME_Style *s, int nFlags) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor,
                                       ME_Style *style, const WCHAR *str, int len, int flags) DECLSPEC_HIDDEN;
  void ME_CheckCharOffsets(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_PropagateCharOffset(ME_DisplayItem *p, int shift) DECLSPEC_HIDDEN;
  /* this one accounts for 1/2 char tolerance */
  int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order) DECLSPEC_HIDDEN;
  int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest, BOOL visual_order) DECLSPEC_HIDDEN;
  int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order) DECLSPEC_HIDDEN;
  int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset, BOOL visual_order) DECLSPEC_HIDDEN;
  BOOL ME_CanJoinRuns(const ME_Run *run1, const ME_Run *run2) DECLSPEC_HIDDEN;
  void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_SplitRunSimple(ME_TextEditor *editor, ME_Cursor *cursor) DECLSPEC_HIDDEN;
  void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run) DECLSPEC_HIDDEN;
  SIZE ME_GetRunSizeCommon(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen,
                           int startx, int *pAscent, int *pDescent) DECLSPEC_HIDDEN;
  void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor) DECLSPEC_HIDDEN;
  void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppPara, ME_DisplayItem **ppRun, int *pOfs) DECLSPEC_HIDDEN;
  int ME_CharOfsFromRunOfs(ME_TextEditor *editor, const ME_DisplayItem *pPara, const ME_DisplayItem *pRun, int nOfs) DECLSPEC_HIDDEN;
  void ME_SkipAndPropagateCharOffset(ME_DisplayItem *p, int shift) DECLSPEC_HIDDEN;
  void ME_SetCharFormat(ME_TextEditor *editor, ME_Cursor *start, ME_Cursor *end, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_SetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_GetCharFormat(ME_TextEditor *editor, const ME_Cursor *from,
                        const ME_Cursor *to, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
  void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod) DECLSPEC_HIDDEN;
  
  /* caret.c */
  void ME_SetCursorToStart(ME_TextEditor *editor, ME_Cursor *cursor) DECLSPEC_HIDDEN;
  int ME_SetSelection(ME_TextEditor *editor, int from, int to) DECLSPEC_HIDDEN;
  BOOL ME_MoveCursorWords(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs) DECLSPEC_HIDDEN;
  void ME_HideCaret(ME_TextEditor *ed) DECLSPEC_HIDDEN;
  void ME_ShowCaret(ME_TextEditor *ed) DECLSPEC_HIDDEN;
  void ME_MoveCaret(ME_TextEditor *ed) DECLSPEC_HIDDEN;
  BOOL ME_CharFromPos(ME_TextEditor *editor, int x, int y, ME_Cursor *cursor, BOOL *isExact) DECLSPEC_HIDDEN;
  void ME_LButtonDown(ME_TextEditor *editor, int x, int y, int clickNum) DECLSPEC_HIDDEN;
  void ME_MouseMove(ME_TextEditor *editor, int x, int y) DECLSPEC_HIDDEN;
  BOOL ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor, int nChars) DECLSPEC_HIDDEN;
  void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor, 
                               const WCHAR *str, int len, ME_Style *style) DECLSPEC_HIDDEN;
  void ME_InsertEndRowFromCursor(ME_TextEditor *editor, int nCursor) DECLSPEC_HIDDEN;
  int ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs, BOOL final_eop) DECLSPEC_HIDDEN;
  BOOL ME_ArrowKey(ME_TextEditor *ed, int nVKey, BOOL extend, BOOL ctrl) DECLSPEC_HIDDEN;
  
  int ME_GetCursorOfs(const ME_Cursor *cursor) DECLSPEC_HIDDEN;
  int ME_GetSelectionOfs(ME_TextEditor *editor, int *from, int *to) DECLSPEC_HIDDEN;
  int ME_GetSelection(ME_TextEditor *editor, ME_Cursor **from, ME_Cursor **to) DECLSPEC_HIDDEN;
  BOOL ME_IsSelection(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_DeleteSelection(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_SendSelChange(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_InsertOLEFromCursor(ME_TextEditor *editor, const REOBJECT* reo, int nCursor) DECLSPEC_HIDDEN;
  BOOL ME_InternalDeleteText(ME_TextEditor *editor, ME_Cursor *start, int nChars, BOOL bForce) DECLSPEC_HIDDEN;
  int ME_GetTextLength(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how) DECLSPEC_HIDDEN;
  ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor, int *x, int *y, int *height) DECLSPEC_HIDDEN;
  
  /* context.c */
  void ME_InitContext(ME_Context *c, ME_TextEditor *editor, HDC hDC) DECLSPEC_HIDDEN;
  void ME_DestroyContext(ME_Context *c) DECLSPEC_HIDDEN;
  
  /* wrap.c */
  BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_InvalidateParagraphRange(ME_TextEditor *editor, ME_DisplayItem *start_para, ME_DisplayItem *last_para) DECLSPEC_HIDDEN;
  void ME_SendRequestResize(ME_TextEditor *editor, BOOL force) DECLSPEC_HIDDEN;
  
  /* para.c */
  ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *run) DECLSPEC_HIDDEN;
  void ME_GetSelectionParas(ME_TextEditor *editor, ME_DisplayItem **para, ME_DisplayItem **para_end) DECLSPEC_HIDDEN;
  void ME_MakeFirstParagraph(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *rp, ME_Style *style, const WCHAR *eol_str, int eol_len, int paraFlags) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_JoinParagraphs(ME_TextEditor *editor, ME_DisplayItem *tp,
                                    BOOL keepFirstParaFormat) DECLSPEC_HIDDEN;
  void ME_DumpParaStyle(ME_Paragraph *s) DECLSPEC_HIDDEN;
  void ME_DumpParaStyleToBuf(const PARAFORMAT2 *pFmt, char buf[2048]) DECLSPEC_HIDDEN;
  BOOL ME_SetSelectionParaFormat(ME_TextEditor *editor, const PARAFORMAT2 *pFmt) DECLSPEC_HIDDEN;
  void ME_GetSelectionParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt) DECLSPEC_HIDDEN;
  void ME_MarkAllForWrapping(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_SetDefaultParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt) DECLSPEC_HIDDEN;
  void para_num_init( ME_Context *c, ME_Paragraph *para ) DECLSPEC_HIDDEN;
  void para_num_clear( struct para_num *pn ) DECLSPEC_HIDDEN;
  
  /* paint.c */
  void ME_PaintContent(ME_TextEditor *editor, HDC hDC, const RECT *rcUpdate) DECLSPEC_HIDDEN;
  void ME_Repaint(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_RewrapRepaint(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_UpdateRepaint(ME_TextEditor *editor, BOOL update_now) DECLSPEC_HIDDEN;
  void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor) DECLSPEC_HIDDEN;
  void ME_InvalidateSelection(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  BOOL ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator) DECLSPEC_HIDDEN;
  int  ME_twips2pointsX(const ME_Context *c, int x) DECLSPEC_HIDDEN;
  int  ME_twips2pointsY(const ME_Context *c, int y) DECLSPEC_HIDDEN;
  
  /* scroll functions in paint.c */
  
  void ME_ScrollAbs(ME_TextEditor *editor, int x, int y) DECLSPEC_HIDDEN;
  void ME_HScrollAbs(ME_TextEditor *editor, int x) DECLSPEC_HIDDEN;
  void ME_VScrollAbs(ME_TextEditor *editor, int y) DECLSPEC_HIDDEN;
  void ME_ScrollUp(ME_TextEditor *editor, int cy) DECLSPEC_HIDDEN;
  void ME_ScrollDown(ME_TextEditor *editor, int cy) DECLSPEC_HIDDEN;
  void ME_ScrollLeft(ME_TextEditor *editor, int cx) DECLSPEC_HIDDEN;
  void ME_ScrollRight(ME_TextEditor *editor, int cx) DECLSPEC_HIDDEN;
  void ME_UpdateScrollBar(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  
  /* other functions in paint.c */
  int ME_GetParaBorderWidth(const ME_Context *c, int flags) DECLSPEC_HIDDEN;
  
  /* richole.c */
  LRESULT CreateIRichEditOle(IUnknown *outer_unk, ME_TextEditor *editor, LPVOID *ppvObj) DECLSPEC_HIDDEN;
  void ME_DrawOLE(ME_Context *c, int x, int y, ME_Run* run, BOOL selected) DECLSPEC_HIDDEN;
  void ME_GetOLEObjectSize(const ME_Context *c, ME_Run *run, SIZE *pSize) DECLSPEC_HIDDEN;
  void ME_CopyReObject(REOBJECT *dst, const REOBJECT *src, DWORD flags) DECLSPEC_HIDDEN;
  void ME_DeleteReObject(struct re_object *re_object) DECLSPEC_HIDDEN;
  void ME_GetITextDocumentInterface(IRichEditOle *iface, LPVOID *ppvObj) DECLSPEC_HIDDEN;
  
  /* editor.c */
  ME_TextEditor *ME_MakeEditor(ITextHost *texthost, BOOL bEmulateVersion10) DECLSPEC_HIDDEN;
  void ME_DestroyEditor(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
                           LPARAM lParam, BOOL unicode, HRESULT* phresult) DECLSPEC_HIDDEN;
  void ME_SendOldNotify(ME_TextEditor *editor, int nCode) DECLSPEC_HIDDEN;
  int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int buflen,
                  const ME_Cursor *start, int srcChars, BOOL bCRLF, BOOL bEOP) DECLSPEC_HIDDEN;
  void ME_RTFCharAttrHook(struct _RTF_Info *info) DECLSPEC_HIDDEN;
  void ME_RTFParAttrHook(struct _RTF_Info *info) DECLSPEC_HIDDEN;
  void ME_RTFTblAttrHook(struct _RTF_Info *info) DECLSPEC_HIDDEN;
  void ME_RTFSpecialCharHook(struct _RTF_Info *info) DECLSPEC_HIDDEN;
  void ME_StreamInFill(ME_InStream *stream) DECLSPEC_HIDDEN;
  extern BOOL me_debug DECLSPEC_HIDDEN;
  void ME_ReplaceSel(ME_TextEditor *editor, BOOL can_undo, const WCHAR *str, int len) DECLSPEC_HIDDEN;
  
  /* table.c */
  BOOL ME_IsInTable(ME_DisplayItem *pItem) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_InsertTableRowStartFromCursor(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_InsertTableRowStartAtParagraph(ME_TextEditor *editor,
                                                    ME_DisplayItem *para) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_InsertTableCellFromCursor(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_InsertTableRowEndFromCursor(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_GetTableRowEnd(ME_DisplayItem *para) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_GetTableRowStart(ME_DisplayItem *para) DECLSPEC_HIDDEN;
  ME_DisplayItem *ME_GetOuterParagraph(ME_DisplayItem *para) DECLSPEC_HIDDEN;
  void ME_CheckTablesForCorruption(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_ProtectPartialTableDeletion(ME_TextEditor *editor, ME_Cursor *c, int *nChars) DECLSPEC_HIDDEN;
  ME_DisplayItem* ME_AppendTableRow(ME_TextEditor *editor, ME_DisplayItem *table_row) DECLSPEC_HIDDEN;
  void ME_TabPressedInTable(ME_TextEditor *editor, BOOL bSelectedRow) DECLSPEC_HIDDEN;
  void ME_MoveCursorFromTableRowStartParagraph(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  struct RTFTable *ME_MakeTableDef(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_InitTableDef(ME_TextEditor *editor, struct RTFTable *tableDef) DECLSPEC_HIDDEN;
  
  /* txthost.c */
  ITextHost *ME_CreateTextHost(HWND hwnd, CREATESTRUCTW *cs, BOOL bEmulateVersion10) DECLSPEC_HIDDEN;
  #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 */
  BOOL add_undo_insert_run( ME_TextEditor *, int pos, const WCHAR *str, int len, int flags, ME_Style *style ) DECLSPEC_HIDDEN;
  BOOL add_undo_delete_run( ME_TextEditor *, int pos, int len ) DECLSPEC_HIDDEN;
  BOOL add_undo_set_para_fmt( ME_TextEditor *, const ME_Paragraph *para ) DECLSPEC_HIDDEN;
  BOOL add_undo_set_char_fmt( ME_TextEditor *, int pos, int len, const CHARFORMAT2W *fmt ) DECLSPEC_HIDDEN;
  BOOL add_undo_join_paras( ME_TextEditor *, int pos ) DECLSPEC_HIDDEN;
  BOOL add_undo_split_para( ME_TextEditor *, const ME_Paragraph *para, ME_String *eol_str, const ME_Cell *cell) DECLSPEC_HIDDEN;
  void ME_CommitUndo(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_ContinueCoalescingTransaction(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_CommitCoalescingUndo(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  BOOL ME_Undo(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  BOOL ME_Redo(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  void ME_EmptyUndoStack(ME_TextEditor *editor) DECLSPEC_HIDDEN;
  
  /* writer.c */
  LRESULT ME_StreamOutRange(ME_TextEditor *editor, DWORD dwFormat, const ME_Cursor *start, int nChars, EDITSTREAM *stream) DECLSPEC_HIDDEN;
  LRESULT ME_StreamOut(ME_TextEditor *editor, DWORD dwFormat, EDITSTREAM *stream) DECLSPEC_HIDDEN;
  
  /* clipboard.c */
  HRESULT ME_GetDataObject(ME_TextEditor *editor, const ME_Cursor *start, int nChars, LPDATAOBJECT *lplpdataobj) DECLSPEC_HIDDEN;
  
  void release_typelib(void) DECLSPEC_HIDDEN;
  