dlls/riched20/editor.c

   1 /*
   2  * RichEdit - functions dealing with editor object
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /*
  22   API implementation status:
  23
  24   Messages (ANSI versions not done yet)
  25   - EM_AUTOURLDETECT 2.0
  26   + EM_CANPASTE
  27   + EM_CANREDO 2.0
  28   + EM_CANUNDO
  29   - EM_CHARFROMPOS
  30   - EM_DISPLAYBAND
  31   + EM_EMPTYUNDOBUFFER
  32   + EM_EXGETSEL
  33   - EM_EXLIMITTEXT
  34   + EM_EXLINEFROMCHAR
  35   + EM_EXSETSEL
  36   + EM_FINDTEXT (only FR_DOWN flag implemented)
  37   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  38   - EM_FINDWORDBREAK
  39   - EM_FMTLINES
  40   - EM_FORMATRANGE
  41   - EM_GETAUTOURLDETECT 2.0
  42   - EM_GETBIDIOPTIONS 3.0
  43   - EM_GETCHARFORMAT (partly done)
  44   - EM_GETEDITSTYLE
  45   + EM_GETEVENTMASK
  46   - EM_GETFIRSTVISIBLELINE
  47   - EM_GETIMECOLOR 1.0asian
  48   - EM_GETIMECOMPMODE 2.0
  49   - EM_GETIMEOPTIONS 1.0asian
  50   - EM_GETIMESTATUS
  51   - EM_GETLANGOPTIONS 2.0
  52   - EM_GETLIMITTEXT
  53   - EM_GETLINE
  54   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  55   + EM_GETMODIFY
  56   - EM_GETOLEINTERFACE
  57   - EM_GETOPTIONS
  58   + EM_GETPARAFORMAT
  59   - EM_GETPASSWORDCHAR 2.0
  60   - EM_GETPUNCTUATION 1.0asian
  61   - EM_GETRECT
  62   - EM_GETREDONAME 2.0
  63   + EM_GETSEL
  64   + EM_GETSELTEXT (ANSI&Unicode)
  65   - EM_GETSCROLLPOS 3.0
  66 ! - EM_GETTHUMB
  67   - EM_GETTEXTEX 2.0
  68   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  69   - EM_GETTEXTMODE 2.0
  70 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  71   - EM_GETTYPOGRAPHYOPTIONS 3.0
  72   - EM_GETUNDONAME
  73   - EM_GETWORDBREAKPROC
  74   - EM_GETWORDBREAKPROCEX
  75   - EM_GETWORDWRAPMODE 1.0asian
  76   - EM_SETZOOM 3.0
  77   - EM_HIDESELECTION
  78   - EM_LIMITTEXT
  79   + EM_LINEFROMCHAR
  80   + EM_LINEINDEX
  81   + EM_LINELENGTH
  82   + EM_LINESCROLL
  83   - EM_PASTESPECIAL
  84   - EM_POSFROMCHARS
  85   + EM_REDO 2.0
  86   - EM_REQUESTRESIZE
  87   + EM_REPLACESEL (proper style?) ANSI&Unicode
  88   - EM_SCROLL
  89   - EM_SCROLLCARET
  90   - EM_SELECTIONTYPE
  91   - EM_SETBIDIOPTIONS 3.0
  92   + EM_SETBKGNDCOLOR
  93   - EM_SETCHARFORMAT (partly done, no ANSI)
  94   - EM_SETEDITSTYLE
  95   + EM_SETEVENTMASK (few notifications supported)
  96   - EM_SETFONTSIZE
  97   - EM_SETIMECOLOR 1.0asian
  98   - EM_SETIMEOPTIONS 1.0asian
  99   - EM_SETLANGOPTIONS 2.0
 100   - EM_SETLIMITTEXT
 101   + EM_SETMODIFY (not sure if implementation is correct)
 102   - EM_SETOLECALLBACK
 103   - EM_SETOPTIONS
 104   - EM_SETPALETTE 2.0
 105   + EM_SETPARAFORMAT
 106   - EM_SETPASSWORDCHAR 2.0
 107   - EM_SETPUNCTUATION 1.0asian
 108   + EM_SETREADONLY no beep on modification attempt
 109   - EM_SETRECT
 110   - EM_SETRECTNP (EM_SETRECT without repainting) - not supported in RICHEDIT
 111   + EM_SETSEL
 112   - EM_SETSCROLLPOS 3.0
 113   - EM_SETTABSTOPS 3.0
 114   - EM_SETTARGETDEVICE
 115   + EM_SETTEXTEX 3.0 (unicode only, no rich text insertion handling, proper style?)
 116   - EM_SETTEXTMODE 2.0
 117   - EM_SETTYPOGRAPHYOPTIONS 3.0
 118   - EM_SETUNDOLIMIT 2.0
 119   - EM_SETWORDBREAKPROC
 120   - EM_SETWORDBREAKPROCEX
 121   - EM_SETWORDWRAPMODE 1.0asian
 122   - EM_SETZOOM 3.0
 123   - EM_SHOWSCROLLBAR 2.0
 124   - EM_STOPGROUPTYPING 2.0
 125   + EM_STREAMIN
 126   + EM_STREAMOUT
 127   + EM_UNDO
 128   + WM_CHAR
 129   + WM_CLEAR
 130   + WM_COPY
 131   + WM_CUT
 132   + WM_GETDLGCODE (the current implementation is incomplete)
 133   + WM_GETTEXT (ANSI&Unicode)
 134   + WM_GETTEXTLENGTH (ANSI version sucks)
 135   + WM_PASTE
 136   - WM_SETFONT
 137   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 138   - WM_STYLECHANGING
 139   - WM_STYLECHANGED (things like read-only flag)
 140   - WM_UNICHAR
 141
 142   Notifications
 143
 144   * EN_CHANGE (sent from the wrong place)
 145   - EN_CORRECTTEXT
 146   - EN_DROPFILES
 147   - EN_ERRSPACE
 148   - EN_HSCROLL
 149   - EN_IMECHANGE
 150   + EN_KILLFOCUS
 151   - EN_LINK
 152   - EN_MAXTEXT
 153   - EN_MSGFILTER
 154   - EN_OLEOPFAILED
 155   - EN_PROTECTED
 156   - EN_REQUESTRESIZE
 157   - EN_SAVECLIPBOARD
 158   + EN_SELCHANGE
 159   + EN_SETFOCUS
 160   - EN_STOPNOUNDO
 161   * EN_UPDATE (sent from the wrong place)
 162   - EN_VSCROLL
 163
 164   Styles
 165
 166   - ES_AUTOHSCROLL
 167   - ES_AUTOVSCROLL
 168   - ES_CENTER
 169   - ES_DISABLENOSCROLL (scrollbar is always visible)
 170   - ES_EX_NOCALLOLEINIT
 171   - ES_LEFT
 172   - ES_MULTILINE (currently single line controls aren't supported)
 173   - ES_NOIME
 174   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 175   - ES_RIGHT
 176   - ES_SAVESEL
 177   - ES_SELFIME
 178   - ES_SUNKEN
 179   - ES_VERTICAL
 180   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 181   - WS_SETFONT
 182   - WS_HSCROLL
 183   - WS_VSCROLL
 184 */
 185
 186 /*
 187  * RICHED20 TODO (incomplete):
 188  *
 189  * - messages/styles/notifications listed above
 190  * - Undo coalescing
 191  * - add remaining CHARFORMAT/PARAFORMAT fields
 192  * - right/center align should strip spaces from the beginning
 193  * - more advanced navigation (Ctrl-arrows)
 194  * - tabs
 195  * - pictures/OLE objects (not just smiling faces that lack API support ;-) )
 196  * - COM interface (looks like a major pain in the TODO list)
 197  * - calculate heights of pictures (half-done)
 198  * - horizontal scrolling (not even started)
 199  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 200  * - find/replace
 201  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 202  * - italic caret with italic fonts
 203  * - IME
 204  * - most notifications aren't sent at all (the most important ones are)
 205  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 206  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 207  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 208  *
 209  * Bugs that are probably fixed, but not so easy to verify:
 210  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 211  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 212  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 213  * - caret shouldn't be displayed when selection isn't empty
 214  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 215  * - undo for setting default format (done, might be buggy)
 216  * - styles might be not released properly (looks like they work like charm, but who knows?
 217  *
 218  */
 219
 220 #include "editor.h"
 221 #include "commdlg.h"
 222 #include "ole2.h"
 223 #include "richole.h"
 224 #include "winreg.h"
 225 #define NO_SHLWAPI_STREAM
 226 #include "shlwapi.h"
 227
 228 #include "rtf.h"
 229
 230 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 231
 232 int me_debug = 0;
 233 HANDLE me_heap = NULL;
 234
 235 static ME_TextBuffer *ME_MakeText(void) {
 236
 237   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 238
 239   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 240   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 241
 242   p1->prev = NULL;
 243   p1->next = p2;
 244   p2->prev = p1;
 245   p2->next = NULL;
 246   p1->member.para.next_para = p2;
 247   p2->member.para.prev_para = p1;
 248   p2->member.para.nCharOfs = 0;
 249
 250   buf->pFirst = p1;
 251   buf->pLast = p2;
 252   buf->pCharStyle = NULL;
 253
 254   return buf;
 255 }
 256
 257
 258 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 259 {
 260   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 261   WCHAR *pText;
 262
 263   TRACE("%08lx %p\n", dwFormat, stream);
 264
 265   do {
 266     long nWideChars = 0;
 267
 268     if (!stream->dwSize)
 269     {
 270       ME_StreamInFill(stream);
 271       if (stream->editstream->dwError)
 272         break;
 273       if (!stream->dwSize)
 274         break;
 275     }
 276
 277     if (!(dwFormat & SF_UNICODE))
 278     {
 279       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 280       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 281       pText = wszText;
 282     }
 283     else
 284     {
 285       nWideChars = stream->dwSize >> 1;
 286       pText = (WCHAR *)stream->buffer;
 287     }
 288
 289     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 290     if (stream->dwSize < STREAMIN_BUFFER_SIZE)
 291       break;
 292     stream->dwSize = 0;
 293   } while(1);
 294   ME_CommitUndo(editor);
 295   ME_Repaint(editor);
 296   return 0;
 297 }
 298
 299 static void ME_RTFCharAttrHook(RTF_Info *info)
 300 {
 301   CHARFORMAT2W fmt;
 302   fmt.cbSize = sizeof(fmt);
 303   fmt.dwMask = 0;
 304
 305   switch(info->rtfMinor)
 306   {
 307     case rtfPlain:
 308       /* FIXME add more flags once they're implemented */
 309       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 310       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 311       fmt.yHeight = 12*20; /* 12pt */
 312       fmt.wWeight = 400;
 313       break;
 314     case rtfBold:
 315       fmt.dwMask = CFM_BOLD;
 316       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 317       break;
 318     case rtfItalic:
 319       fmt.dwMask = CFM_ITALIC;
 320       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 321       break;
 322     case rtfUnderline:
 323       fmt.dwMask = CFM_UNDERLINE;
 324       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 325       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 326       break;
 327     case rtfNoUnderline:
 328       fmt.dwMask = CFM_UNDERLINE;
 329       fmt.dwEffects = 0;
 330       break;
 331     case rtfStrikeThru:
 332       fmt.dwMask = CFM_STRIKEOUT;
 333       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 334       break;
 335     case rtfSubScript:
 336     case rtfSuperScript:
 337     case rtfSubScrShrink:
 338     case rtfSuperScrShrink:
 339     case rtfNoSuperSub:
 340       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 341       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 342       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 343       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 344       break;
 345     case rtfBackColor:
 346       fmt.dwMask = CFM_BACKCOLOR;
 347       fmt.dwEffects = 0;
 348       if (info->rtfParam == 0)
 349         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 350       else if (info->rtfParam != rtfNoParam)
 351       {
 352         RTFColor *c = RTFGetColor(info, info->rtfParam);
 353         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 354       }
 355       break;
 356     case rtfForeColor:
 357       fmt.dwMask = CFM_COLOR;
 358       fmt.dwEffects = 0;
 359       if (info->rtfParam == 0)
 360         fmt.dwEffects = CFE_AUTOCOLOR;
 361       else if (info->rtfParam != rtfNoParam)
 362       {
 363         RTFColor *c = RTFGetColor(info, info->rtfParam);
 364         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 365       }
 366       break;
 367     case rtfFontNum:
 368       if (info->rtfParam != rtfNoParam)
 369       {
 370         RTFFont *f = RTFGetFont(info, info->rtfParam);
 371         if (f)
 372         {
 373           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 374           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 375           fmt.bCharSet = f->rtfFCharSet;
 376           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 377         }
 378       }
 379       break;
 380     case rtfFontSize:
 381       fmt.dwMask = CFM_SIZE;
 382       if (info->rtfParam != rtfNoParam)
 383         fmt.yHeight = info->rtfParam*10;
 384       break;
 385   }
 386   if (fmt.dwMask) {
 387     ME_Style *style2;
 388     RTFFlushOutputBuffer(info);
 389     /* FIXME too slow ? how come ? */
 390     style2 = ME_ApplyStyle(info->style, &fmt);
 391     ME_ReleaseStyle(info->style);
 392     info->style = style2;
 393   }
 394 }
 395
 396 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 397    the same tags mean different things in different contexts */
 398 static void ME_RTFParAttrHook(RTF_Info *info)
 399 {
 400   PARAFORMAT2 fmt;
 401   fmt.cbSize = sizeof(fmt);
 402   fmt.dwMask = 0;
 403
 404   switch(info->rtfMinor)
 405   {
 406   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 407     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 408     fmt.wAlignment = PFA_LEFT;
 409     fmt.cTabCount = 0;
 410     fmt.dxOffset = fmt.dxStartIndent = 0;
 411     break;
 412   case rtfFirstIndent:
 413     ME_GetSelectionParaFormat(info->editor, &fmt);
 414     fmt.dwMask = PFM_STARTINDENT;
 415     fmt.dxStartIndent = info->rtfParam + fmt.dxOffset;
 416     break;
 417   case rtfLeftIndent:
 418   {
 419     int first, left;
 420     ME_GetSelectionParaFormat(info->editor, &fmt);
 421     first = fmt.dxStartIndent;
 422     left = info->rtfParam;
 423     fmt.dwMask = PFM_STARTINDENT|PFM_OFFSET;
 424     fmt.dxStartIndent = first + left;
 425     fmt.dxOffset = -first;
 426     break;
 427   }
 428   case rtfRightIndent:
 429     fmt.dwMask = PFM_RIGHTINDENT;
 430     fmt.dxRightIndent = info->rtfParam;
 431     break;
 432   case rtfQuadLeft:
 433   case rtfQuadJust:
 434     fmt.dwMask = PFM_ALIGNMENT;
 435     fmt.wAlignment = PFA_LEFT;
 436     break;
 437   case rtfQuadRight:
 438     fmt.dwMask = PFM_ALIGNMENT;
 439     fmt.wAlignment = PFA_RIGHT;
 440     break;
 441   case rtfQuadCenter:
 442     fmt.dwMask = PFM_ALIGNMENT;
 443     fmt.wAlignment = PFA_CENTER;
 444     break;
 445   case rtfTabPos:
 446     ME_GetSelectionParaFormat(info->editor, &fmt);
 447     if (!(fmt.dwMask & PFM_TABSTOPS))
 448     {
 449       fmt.dwMask |= PFM_TABSTOPS;
 450       fmt.cTabCount = 0;
 451     }
 452     if (fmt.cTabCount < MAX_TAB_STOPS)
 453       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 454     break;
 455   }
 456   if (fmt.dwMask) {
 457     RTFFlushOutputBuffer(info);
 458     /* FIXME too slow ? how come ?*/
 459     ME_SetSelectionParaFormat(info->editor, &fmt);
 460   }
 461 }
 462
 463 static void ME_RTFReadHook(RTF_Info *info) {
 464   switch(info->rtfClass)
 465   {
 466     case rtfGroup:
 467       switch(info->rtfMajor)
 468       {
 469         case rtfBeginGroup:
 470           if (info->stackTop < maxStack) {
 471             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 472             info->stack[info->stackTop].codePage = info->codePage;
 473             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 474           }
 475           info->stackTop++;
 476           break;
 477         case rtfEndGroup:
 478         {
 479           ME_Style *s;
 480           RTFFlushOutputBuffer(info);
 481           info->stackTop--;
 482           /* FIXME too slow ? how come ? */
 483           s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 484           ME_ReleaseStyle(info->style);
 485           info->style = s;
 486           info->codePage = info->stack[info->stackTop].codePage;
 487           info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 488           break;
 489         }
 490       }
 491       break;
 492     case rtfControl:
 493       switch(info->rtfMajor)
 494       {
 495         case rtfCharAttr:
 496           ME_RTFCharAttrHook(info);
 497           break;
 498         case rtfParAttr:
 499           ME_RTFParAttrHook(info);
 500           break;
 501       }
 502       break;
 503   }
 504 }
 505
 506 void
 507 ME_StreamInFill(ME_InStream *stream)
 508 {
 509   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 510                                                                 stream->buffer,
 511                                                                 sizeof(stream->buffer),
 512                                                                 &stream->dwSize);
 513   stream->dwUsed = 0;
 514 }
 515
 516 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 517 {
 518   RTF_Info parser;
 519   ME_Style *style;
 520   int from, to, to2, nUndoMode;
 521   ME_UndoItem *pUI;
 522   int nEventMask = editor->nEventMask;
 523   ME_InStream inStream;
 524
 525   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 526   editor->nEventMask = 0;
 527
 528   ME_GetSelection(editor, &from, &to);
 529   if (format & SFF_SELECTION) {
 530     style = ME_GetSelectionInsertStyle(editor);
 531
 532     ME_InternalDeleteText(editor, from, to-from);
 533   }
 534   else {
 535     style = editor->pBuffer->pDefaultStyle;
 536     ME_AddRefStyle(style);
 537     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 538     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 539     from = to = 0;
 540     ME_ClearTempStyle(editor);
 541     /* FIXME restore default paragraph formatting ! */
 542   }
 543
 544   nUndoMode = editor->nUndoMode;
 545   editor->nUndoMode = umIgnore;
 546
 547   inStream.editstream = stream;
 548   inStream.editstream->dwError = 0;
 549   inStream.dwSize = 0;
 550   inStream.dwUsed = 0;
 551
 552   if (format & SF_RTF)
 553   {
 554     /* Check if it's really RTF, and if it is not, use plain text */
 555     ME_StreamInFill(&inStream);
 556     if (!inStream.editstream->dwError)
 557     {
 558       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 559       {
 560         format &= ~SF_RTF;
 561         format |= SF_TEXT;
 562       }
 563     }
 564   }
 565
 566   if (!inStream.editstream->dwError)
 567   {
 568     if (format & SF_RTF) {
 569       /* setup the RTF parser */
 570       memset(&parser, 0, sizeof parser);
 571       RTFSetEditStream(&parser, &inStream);
 572       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 573       parser.hwndEdit = editor->hWnd;
 574       parser.editor = editor;
 575       parser.style = style;
 576       WriterInit(&parser);
 577       RTFInit(&parser);
 578       RTFSetReadHook(&parser, ME_RTFReadHook);
 579       BeginFile(&parser);
 580
 581       /* do the parsing */
 582       RTFRead(&parser);
 583       RTFFlushOutputBuffer(&parser);
 584       RTFDestroy(&parser);
 585
 586       style = parser.style;
 587     }
 588     else if (format & SF_TEXT)
 589       ME_StreamInText(editor, format, &inStream, style);
 590     else
 591       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 592     ME_GetSelection(editor, &to, &to2);
 593     /* put the cursor at the top */
 594     if (!(format & SFF_SELECTION))
 595       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 596     else
 597     {
 598       /* FIXME where to put cursor now ? */
 599     }
 600   }
 601
 602   editor->nUndoMode = nUndoMode;
 603   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 604   TRACE("from %d to %d\n", from, to);
 605   if (pUI && from < to)
 606   {
 607     pUI->nStart = from;
 608     pUI->nLen = to-from;
 609   }
 610   ME_CommitUndo(editor);
 611   ME_ReleaseStyle(style);
 612   editor->nEventMask = nEventMask;
 613   InvalidateRect(editor->hWnd, NULL, TRUE);
 614   ME_UpdateRepaint(editor);
 615   if (!(format & SFF_SELECTION)) {
 616     ME_ClearTempStyle(editor);
 617   }
 618   ME_MoveCaret(editor);
 619   ME_SendSelChange(editor);
 620
 621   return 0;
 622 }
 623
 624
 625 ME_DisplayItem *
 626 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 627 {
 628   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 629
 630   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 631     item = ME_FindItemFwd(item, diParagraph);
 632
 633   if (!item)
 634     return item;
 635
 636   nOffset -= item->member.para.nCharOfs;
 637   if (nItemType == diParagraph) {
 638     if (nItemOffset)
 639       *nItemOffset = nOffset;
 640     return item;
 641   }
 642
 643   do {
 644     item = ME_FindItemFwd(item, diRun);
 645   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 646   if (item) {
 647     nOffset -= item->member.run.nCharOfs;
 648     if (nItemOffset)
 649       *nItemOffset = nOffset;
 650   }
 651   return item;
 652 }
 653
 654
 655 static int
 656 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 657 {
 658   int nStart = chrg->cpMin;
 659   int nLen = lstrlenW(text);
 660   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 661   ME_DisplayItem *para;
 662
 663   if (!item)
 664     return -1;
 665
 666   if (!nLen)
 667   {
 668     if (chrgText)
 669       chrgText->cpMin = chrgText->cpMax = chrg->cpMin;
 670     return chrg->cpMin;
 671   }
 672
 673   if (!(flags & FR_DOWN))
 674     FIXME("Backward search not implemented\n");
 675   if (!(flags & FR_MATCHCASE))
 676     FIXME("Case-insensitive search not implemented\n");
 677   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 678     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 679
 680   para = ME_GetParagraph(item);
 681   while (item && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen < chrg->cpMax)
 682   {
 683     ME_DisplayItem *pCurItem = item;
 684     int nCurStart = nStart;
 685     int nMatched = 0;
 686
 687     while (pCurItem->member.run.strText->szData[nCurStart + nMatched] == text[nMatched])
 688     {
 689       nMatched++;
 690       if (nMatched == nLen)
 691       {
 692         nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 693         if (chrgText)
 694         {
 695           chrgText->cpMin = nStart;
 696           chrgText->cpMax = nStart + nLen;
 697         }
 698         return nStart;
 699       }
 700       if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 701       {
 702         pCurItem = ME_FindItemFwd(pCurItem, diRun);
 703         nCurStart = -nMatched;
 704       }
 705     }
 706     nStart++;
 707     if (nStart == ME_StrLen(item->member.run.strText))
 708     {
 709       item = ME_FindItemFwd(item, diRun);
 710       para = ME_GetParagraph(item);
 711       nStart = 0;
 712     }
 713   }
 714   return -1;
 715 }
 716
 717
 718 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 719   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 720   HDC hDC;
 721   int i;
 722   ed->hWnd = hWnd;
 723   ed->bEmulateVersion10 = FALSE;
 724   ed->pBuffer = ME_MakeText();
 725   hDC = GetDC(hWnd);
 726   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 727   ReleaseDC(hWnd, hDC);
 728   ed->bCaretShown = FALSE;
 729   ed->nCursors = 3;
 730   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 731   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 732   ed->pCursors[0].nOffset = 0;
 733   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 734   ed->pCursors[1].nOffset = 0;
 735   ed->nLastTotalLength = ed->nTotalLength = 0;
 736   ed->nUDArrowX = -1;
 737   ed->nSequence = 0;
 738   ed->rgbBackColor = -1;
 739   ed->bCaretAtEnd = FALSE;
 740   ed->nEventMask = 0;
 741   ed->nModifyStep = 0;
 742   ed->pUndoStack = ed->pRedoStack = NULL;
 743   ed->nUndoMode = umAddToUndo;
 744   ed->nParagraphs = 1;
 745   ed->nLastSelStart = ed->nLastSelEnd = 0;
 746   ed->nScrollPosY = 0;
 747   for (i=0; i<HFONT_CACHE_SIZE; i++)
 748   {
 749     ed->pFontCache[i].nRefs = 0;
 750     ed->pFontCache[i].nAge = 0;
 751     ed->pFontCache[i].hFont = NULL;
 752   }
 753   ME_CheckCharOffsets(ed);
 754   return ed;
 755 }
 756
 757 typedef struct tagME_GlobalDestStruct
 758 {
 759   HGLOBAL hData;
 760   int nLength;
 761 } ME_GlobalDestStruct;
 762
 763 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 764 {
 765   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 766   int nMaxSize;
 767   BYTE *pDest;
 768
 769   nMaxSize = GlobalSize(pData->hData);
 770   if (pData->nLength+cb+1 >= cb)
 771   {
 772     /* round up to 2^17 */
 773     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 774     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 775   }
 776   pDest = (BYTE *)GlobalLock(pData->hData);
 777   memcpy(pDest + pData->nLength, lpBuff, cb);
 778   pData->nLength += cb;
 779   pDest[pData->nLength] = '\0';
 780   GlobalUnlock(pData->hData);
 781   *pcb = cb;
 782
 783   return 0;
 784 }
 785
 786 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 787 {
 788   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 789   int i;
 790   WORD *pSrc, *pDest;
 791
 792   cb = cb >> 1;
 793   pDest = (WORD *)lpBuff;
 794   pSrc = (WORD *)GlobalLock(pData->hData);
 795   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 796     pDest[i] = pSrc[pData->nLength+i];
 797   }
 798   pData->nLength += i;
 799   *pcb = 2*i;
 800   GlobalUnlock(pData->hData);
 801   return 0;
 802 }
 803
 804 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 805 {
 806   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 807   int i;
 808   BYTE *pSrc, *pDest;
 809
 810   pDest = lpBuff;
 811   pSrc = (BYTE *)GlobalLock(pData->hData);
 812   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 813     pDest[i] = pSrc[pData->nLength+i];
 814   }
 815   pData->nLength += i;
 816   *pcb = i;
 817   GlobalUnlock(pData->hData);
 818   return 0;
 819 }
 820
 821
 822 void ME_DestroyEditor(ME_TextEditor *editor)
 823 {
 824   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 825   ME_DisplayItem *p = pFirst, *pNext = NULL;
 826   int i;
 827
 828   ME_ClearTempStyle(editor);
 829   ME_EmptyUndoStack(editor);
 830   while(p) {
 831     pNext = p->next;
 832     ME_DestroyDisplayItem(p);
 833     p = pNext;
 834   }
 835   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 836   for (i=0; i<HFONT_CACHE_SIZE; i++)
 837   {
 838     if (editor->pFontCache[i].hFont)
 839       DeleteObject(editor->pFontCache[i].hFont);
 840   }
 841
 842   FREE_OBJ(editor);
 843 }
 844
 845 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 846 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 847
 848 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 849 {
 850     TRACE("\n");
 851     switch (fdwReason)
 852     {
 853     case DLL_PROCESS_ATTACH:
 854       DisableThreadLibraryCalls(hinstDLL);
 855       me_heap = HeapCreate (0, 0x10000, 0);
 856       ME_RegisterEditorClass(hinstDLL);
 857       break;
 858
 859     case DLL_PROCESS_DETACH:
 860       UnregisterClassW(wszClassName, 0);
 861       UnregisterClassW(wszClassName50, 0);
 862       UnregisterClassA("RichEdit20A", 0);
 863       UnregisterClassA("RichEdit50A", 0);
 864       HeapDestroy (me_heap);
 865       me_heap = NULL;
 866       break;
 867     }
 868     return TRUE;
 869 }
 870
 871
 872 #define UNSUPPORTED_MSG(e) \
 873   case e: \
 874     FIXME(#e ": stub\n"); \
 875     return DefWindowProcW(hWnd, msg, wParam, lParam);
 876
 877 /******************************************************************
 878  *        RichEditANSIWndProc (RICHED20.10)
 879  */
 880 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 881   HDC hDC;
 882   PAINTSTRUCT ps;
 883   SCROLLINFO si;
 884   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
 885   TRACE("msg %d %08x %08lx\n", msg, wParam, lParam);
 886   switch(msg) {
 887
 888   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
 889   UNSUPPORTED_MSG(EM_CHARFROMPOS)
 890   UNSUPPORTED_MSG(EM_DISPLAYBAND)
 891   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
 892   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
 893   UNSUPPORTED_MSG(EM_FMTLINES)
 894   UNSUPPORTED_MSG(EM_FORMATRANGE)
 895   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
 896   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
 897   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
 898   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
 899   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
 900   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
 901   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
 902   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
 903   UNSUPPORTED_MSG(EM_GETLINE)
 904   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
 905   UNSUPPORTED_MSG(EM_GETOPTIONS)
 906   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
 907   UNSUPPORTED_MSG(EM_GETRECT)
 908   UNSUPPORTED_MSG(EM_GETREDONAME)
 909   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
 910   UNSUPPORTED_MSG(EM_GETTEXTMODE)
 911   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
 912   UNSUPPORTED_MSG(EM_GETUNDONAME)
 913   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
 914   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
 915   UNSUPPORTED_MSG(EM_GETZOOM)
 916   UNSUPPORTED_MSG(EM_HIDESELECTION)
 917   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
 918   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 919 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
 920   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
 921   UNSUPPORTED_MSG(EM_SCROLL)
 922   UNSUPPORTED_MSG(EM_SCROLLCARET)
 923   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
 924   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
 925   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
 926   UNSUPPORTED_MSG(EM_SETFONTSIZE)
 927   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
 928   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
 929   UNSUPPORTED_MSG(EM_SETOPTIONS)
 930   UNSUPPORTED_MSG(EM_SETPALETTE)
 931   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
 932   UNSUPPORTED_MSG(EM_SETRECT)
 933   UNSUPPORTED_MSG(EM_SETRECTNP)
 934   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
 935   UNSUPPORTED_MSG(EM_SETTABSTOPS)
 936   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
 937   UNSUPPORTED_MSG(EM_SETTEXTMODE)
 938   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
 939   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
 940   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
 941   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 942   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
 943   UNSUPPORTED_MSG(EM_SETZOOM)
 944   UNSUPPORTED_MSG(WM_SETFONT)
 945   UNSUPPORTED_MSG(WM_STYLECHANGING)
 946   UNSUPPORTED_MSG(WM_STYLECHANGED)
 947 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
 948
 949 /* Messages specific to Richedit controls */
 950
 951   case EM_STREAMIN:
 952    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
 953   case EM_STREAMOUT:
 954    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
 955   case WM_GETDLGCODE:
 956   {
 957     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
 958     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
 959       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
 960     return code;
 961   }
 962   case WM_NCCREATE:
 963   {
 964     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
 965     editor = ME_MakeEditor(hWnd);
 966     SetWindowLongW(hWnd, 0, (long)editor);
 967     pcs = 0; /* ignore */
 968     return TRUE;
 969   }
 970   case EM_EMPTYUNDOBUFFER:
 971     ME_EmptyUndoStack(editor);
 972     return 0;
 973   case EM_GETSEL:
 974   {
 975     /* Note: wParam/lParam can be NULL */
 976     UINT from, to;
 977     PUINT pfrom = wParam ? (PUINT)wParam : &from;
 978     PUINT pto = lParam ? (PUINT)lParam : &to;
 979     ME_GetSelection(editor, pfrom, pto);
 980     if ((*pfrom|*pto) & 0xFFFF0000)
 981       return -1;
 982     return MAKELONG(*pfrom,*pto);
 983   }
 984   case EM_EXGETSEL:
 985   {
 986     CHARRANGE *pRange = (CHARRANGE *)lParam;
 987     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
 988     return 0;
 989   }
 990   case EM_CANUNDO:
 991     return editor->pUndoStack != NULL;
 992   case EM_CANREDO:
 993     return editor->pRedoStack != NULL;
 994   case EM_UNDO:
 995     ME_Undo(editor);
 996     return 0;
 997   case EM_REDO:
 998     ME_Redo(editor);
 999     return 0;
1000   case EM_SETSEL:
1001   {
1002     ME_SetSelection(editor, wParam, lParam);
1003     ME_Repaint(editor);
1004     ME_SendSelChange(editor);
1005     return 0;
1006   }
1007   case EM_EXSETSEL:
1008   {
1009     CHARRANGE *pRange = (CHARRANGE *)lParam;
1010     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1011     /* FIXME optimize */
1012     ME_Repaint(editor);
1013     ME_SendSelChange(editor);
1014     return 0;
1015   }
1016   case EM_SETTEXTEX:
1017   {
1018     LPWSTR wszText = (LPWSTR)lParam;
1019     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1020     size_t len = lstrlenW(wszText);
1021     int from, to;
1022     ME_Style *style;
1023     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1024     if (pStruct->codepage != 1200) {
1025       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1026       return 0;
1027     }
1028     /* FIXME: this should support RTF strings too, according to MSDN */
1029     if (pStruct->flags & ST_SELECTION) {
1030       ME_GetSelection(editor, &from, &to);
1031       style = ME_GetSelectionInsertStyle(editor);
1032       ME_InternalDeleteText(editor, from, to - from);
1033       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1034       ME_ReleaseStyle(style);
1035     }
1036     else {
1037       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1038       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1039       len = 1;
1040     }
1041     ME_CommitUndo(editor);
1042     if (!(pStruct->flags & ST_KEEPUNDO))
1043       ME_EmptyUndoStack(editor);
1044     ME_UpdateRepaint(editor);
1045     return len;
1046   }
1047   case EM_SETBKGNDCOLOR:
1048   {
1049     LRESULT lColor = ME_GetBackColor(editor);
1050     if (wParam)
1051       editor->rgbBackColor = -1;
1052     else
1053       editor->rgbBackColor = lParam;
1054     InvalidateRect(hWnd, NULL, TRUE);
1055     UpdateWindow(hWnd);
1056     return lColor;
1057   }
1058   case EM_GETMODIFY:
1059     return editor->nModifyStep == 0 ? 0 : 1;
1060   case EM_SETMODIFY:
1061   {
1062     if (wParam)
1063       editor->nModifyStep = 0x80000000;
1064     else
1065       editor->nModifyStep = 0;
1066
1067     return 0;
1068   }
1069   case EM_SETREADONLY:
1070   {
1071     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1072     if (wParam)
1073       nStyle |= ES_READONLY;
1074     else
1075       nStyle &= ~ES_READONLY;
1076     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1077     ME_Repaint(editor);
1078     return 0;
1079   }
1080   case EM_SETEVENTMASK:
1081     editor->nEventMask = lParam;
1082     return 0;
1083   case EM_GETEVENTMASK:
1084     return editor->nEventMask;
1085   case EM_SETCHARFORMAT:
1086   {
1087     CHARFORMAT2W buf, *p;
1088     BOOL bRepaint = TRUE;
1089     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1090     if (!wParam)
1091       ME_SetDefaultCharFormat(editor, p);
1092     else if (wParam == (SCF_WORD | SCF_SELECTION))
1093       FIXME("word selection not supported\n");
1094     else if (wParam == SCF_ALL)
1095       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1096     else {
1097       int from, to;
1098       ME_GetSelection(editor, &from, &to);
1099       bRepaint = (from != to);
1100       ME_SetSelectionCharFormat(editor, p);
1101     }
1102     ME_CommitUndo(editor);
1103     if (bRepaint)
1104       ME_UpdateRepaint(editor);
1105     return 0;
1106   }
1107   case EM_GETCHARFORMAT:
1108   {
1109     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1110     if (dst->cbSize != sizeof(CHARFORMATA) &&
1111         dst->cbSize != sizeof(CHARFORMATW) &&
1112         dst->cbSize != sizeof(CHARFORMAT2A) &&
1113         dst->cbSize != sizeof(CHARFORMAT2W))
1114       return 0;
1115     tmp.cbSize = sizeof(tmp);
1116     if (!wParam)
1117       ME_GetDefaultCharFormat(editor, &tmp);
1118     else
1119       ME_GetSelectionCharFormat(editor, &tmp);
1120     ME_CopyToCFAny(dst, &tmp);
1121     return tmp.dwMask;
1122   }
1123   case EM_SETPARAFORMAT:
1124     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1125     ME_UpdateRepaint(editor);
1126     ME_CommitUndo(editor);
1127     return 0;
1128   case EM_GETPARAFORMAT:
1129     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1130     return 0;
1131   case EM_LINESCROLL:
1132   {
1133     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1134     nPos += 8 * lParam; /* FIXME follow the original */
1135     if (nPos>=nEnd)
1136       nPos = nEnd;
1137     if (nPos<0)
1138       nPos = 0;
1139     if (nPos != editor->nScrollPosY) {
1140       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1141       editor->nScrollPosY = nPos;
1142       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1143       UpdateWindow(hWnd);
1144     }
1145     return TRUE; /* Should return false if a single line richedit control */
1146   }
1147   case WM_CLEAR:
1148   {
1149     int from, to;
1150     ME_GetSelection(editor, &from, &to);
1151     ME_InternalDeleteText(editor, from, to-from);
1152     ME_CommitUndo(editor);
1153     ME_UpdateRepaint(editor);
1154     return 0;
1155   }
1156   case EM_REPLACESEL:
1157   {
1158     int from, to;
1159     ME_Style *style;
1160     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1161     size_t len = lstrlenW(wszText);
1162     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1163
1164     ME_GetSelection(editor, &from, &to);
1165     style = ME_GetSelectionInsertStyle(editor);
1166     ME_InternalDeleteText(editor, from, to-from);
1167     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1168     ME_ReleaseStyle(style);
1169     ME_EndToUnicode(hWnd, wszText);
1170     /* drop temporary style if line end */
1171     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1172     if (len>0 && wszText[len-1] == '\n')
1173       ME_ClearTempStyle(editor);
1174
1175     ME_CommitUndo(editor);
1176     if (!wParam)
1177       ME_EmptyUndoStack(editor);
1178     ME_UpdateRepaint(editor);
1179     return 0;
1180   }
1181   case WM_SETTEXT:
1182   {
1183     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1184     TRACE("WM_SETTEXT - %s\n", (char *)(wszText)); /* debugstr_w() */
1185     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1186     /* uses default style! */
1187     ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1188     ME_EndToUnicode(hWnd, wszText);
1189     ME_CommitUndo(editor);
1190     ME_EmptyUndoStack(editor);
1191     ME_UpdateRepaint(editor);
1192     return 0;
1193   }
1194   case EM_CANPASTE:
1195   {
1196     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1197     if (IsClipboardFormatAvailable(nRTFFormat))
1198       return TRUE;
1199     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1200       return TRUE;
1201     return FALSE;
1202   }
1203   case WM_PASTE:
1204   {
1205     DWORD dwFormat = 0;
1206     EDITSTREAM es;
1207     ME_GlobalDestStruct gds;
1208     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1209     UINT cf = 0;
1210
1211     if (IsClipboardFormatAvailable(nRTFFormat))
1212       cf = nRTFFormat, dwFormat = SF_RTF;
1213     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1214       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1215     else
1216       return 0;
1217
1218     if (!OpenClipboard(hWnd))
1219       return 0;
1220     gds.hData = GetClipboardData(cf);
1221     gds.nLength = 0;
1222     es.dwCookie = (DWORD)&gds;
1223     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1224     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1225
1226     CloseClipboard();
1227     return 0;
1228   }
1229   case WM_CUT:
1230   case WM_COPY:
1231   {
1232     int from, to, pars;
1233     WCHAR *data;
1234     HANDLE hData;
1235     EDITSTREAM es;
1236     ME_GlobalDestStruct gds;
1237
1238     if (!OpenClipboard(hWnd))
1239       return 0;
1240
1241     EmptyClipboard();
1242     ME_GetSelection(editor, &from, &to);
1243     pars = ME_CountParagraphsBetween(editor, from, to);
1244     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1245     data = (WCHAR *)GlobalLock(hData);
1246     ME_GetTextW(editor, data, from, to-from, TRUE);
1247     GlobalUnlock(hData);
1248
1249     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1250     gds.nLength = 0;
1251     es.dwCookie = (DWORD)&gds;
1252     es.pfnCallback = ME_AppendToHGLOBAL;
1253     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1254     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1255
1256     SetClipboardData(CF_UNICODETEXT, hData);
1257     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1258
1259     CloseClipboard();
1260     if (msg == WM_CUT)
1261     {
1262       ME_InternalDeleteText(editor, from, to-from);
1263       ME_CommitUndo(editor);
1264       ME_UpdateRepaint(editor);
1265     }
1266     return 0;
1267   }
1268   case WM_GETTEXTLENGTH:
1269     return ME_GetTextLength(editor);
1270   case EM_GETTEXTLENGTHEX:
1271     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1272   case WM_GETTEXT:
1273   {
1274     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1275     tr.chrg.cpMin = 0;
1276     tr.chrg.cpMax = wParam-1;
1277     tr.lpstrText = (WCHAR *)lParam;
1278     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1279   }
1280   case EM_GETTEXTEX:
1281   {
1282     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1283
1284     if (ex->flags != 0)
1285         FIXME("Unhandled EM_GETTEXTEX flags 0x%lx\n",ex->flags);
1286
1287     if (IsWindowUnicode(hWnd))
1288       return ME_GetTextW(editor, (LPWSTR)lParam, 0, ex->cb, FALSE);
1289     else
1290     {
1291         LPWSTR buffer = HeapAlloc(GetProcessHeap(),0,ex->cb*sizeof(WCHAR));
1292         DWORD buflen = ex->cb;
1293         LRESULT rc;
1294         DWORD flags = 0;
1295
1296         buflen = ME_GetTextW(editor, buffer, 0, buflen, FALSE);
1297         rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1298
1299         HeapFree(GetProcessHeap(),0,buffer);
1300         return rc;
1301     }
1302   }
1303   case EM_GETSELTEXT:
1304   {
1305     int from, to;
1306     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1307     ME_GetSelection(editor, &from, &to);
1308     tr.chrg.cpMin = from;
1309     tr.chrg.cpMax = to;
1310     tr.lpstrText = (WCHAR *)lParam;
1311     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1312   }
1313   case EM_GETTEXTRANGE:
1314   {
1315     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1316     if (IsWindowUnicode(hWnd))
1317       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1318     else
1319     {
1320       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1321       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1322       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
1323       /* FIXME this is a potential security hole (buffer overrun)
1324          if you know more about wchar->mbyte conversion please explain
1325       */
1326       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1327       FREE_OBJ(p);
1328       return nChars;
1329     }
1330     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1331   }
1332   case EM_GETLINECOUNT:
1333   {
1334     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1335     int nRows = 0;
1336
1337     while (item != editor->pBuffer->pLast)
1338     {
1339       assert(item->type == diParagraph);
1340       nRows += item->member.para.nRows;
1341       item = item->member.para.next_para;
1342     }
1343     return max(1, nRows);
1344   }
1345   case EM_LINEFROMCHAR:
1346   {
1347     if (wParam == -1)
1348       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1349     else
1350       return ME_RowNumberFromCharOfs(editor, wParam);
1351   }
1352   case EM_EXLINEFROMCHAR:
1353   {
1354     return ME_RowNumberFromCharOfs(editor, lParam);
1355   }
1356   case EM_LINEINDEX:
1357   {
1358     ME_DisplayItem *item, *para;
1359
1360     if (wParam == -1)
1361       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1362     else
1363       item = ME_FindRowWithNumber(editor, wParam);
1364     if (!item)
1365       return -1;
1366     para = ME_GetParagraph(item);
1367     item = ME_FindItemFwd(item, diRun);
1368     return para->member.para.nCharOfs + item->member.run.nCharOfs;
1369   }
1370   case EM_LINELENGTH:
1371   {
1372     ME_DisplayItem *item, *item_end;
1373     int nChars = 0;
1374
1375     if (wParam > ME_GetTextLength(editor))
1376       return 0;
1377     if (wParam == -1)
1378     {
1379       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1380       return 0;
1381     }
1382     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1383     item = ME_RowStart(item);
1384     item_end = ME_RowEnd(item);
1385     if (!item_end)
1386     {
1387       /* Empty buffer, no runs */
1388       nChars = 0;
1389     }
1390     else
1391     {
1392       nChars = ME_CharOfsFromRunOfs(editor, item_end, ME_StrLen(item_end->member.run.strText));
1393       nChars -= ME_CharOfsFromRunOfs(editor, item, 0);
1394     }
1395     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1396     return nChars;
1397   }
1398   case EM_FINDTEXT:
1399   {
1400     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1401     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1402     WCHAR *tmp;
1403
1404     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1405       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1406     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1407   }
1408   case EM_FINDTEXTEX:
1409   {
1410     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1411     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1412     WCHAR *tmp;
1413
1414     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1415       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1416     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1417   }
1418   case EM_FINDTEXTW:
1419   {
1420     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1421     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1422   }
1423   case EM_FINDTEXTEXW:
1424   {
1425     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1426     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1427   }
1428   case WM_CREATE:
1429     ME_CommitUndo(editor);
1430     ME_WrapMarkedParagraphs(editor);
1431     ME_MoveCaret(editor);
1432     return 0;
1433   case WM_DESTROY:
1434     ME_DestroyEditor(editor);
1435     SetWindowLongW(hWnd, 0, 0);
1436     return 0;
1437   case WM_LBUTTONDOWN:
1438     SetFocus(hWnd);
1439     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1440     SetCapture(hWnd);
1441     break;
1442   case WM_MOUSEMOVE:
1443     if (GetCapture() == hWnd)
1444       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1445     break;
1446   case WM_LBUTTONUP:
1447     if (GetCapture() == hWnd)
1448       ReleaseCapture();
1449     break;
1450   case WM_PAINT:
1451     hDC = BeginPaint(hWnd, &ps);
1452     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1453     EndPaint(hWnd, &ps);
1454     break;
1455   case WM_SETFOCUS:
1456     ME_ShowCaret(editor);
1457     ME_SendOldNotify(editor, EN_SETFOCUS);
1458     return 0;
1459   case WM_KILLFOCUS:
1460     ME_HideCaret(editor);
1461     ME_SendOldNotify(editor, EN_KILLFOCUS);
1462     return 0;
1463   case WM_ERASEBKGND:
1464   {
1465     HDC hDC = (HDC)wParam;
1466     RECT rc;
1467     COLORREF rgbBG = ME_GetBackColor(editor);
1468     if (GetUpdateRect(hWnd,&rc,TRUE))
1469     {
1470       HBRUSH hbr = CreateSolidBrush(rgbBG);
1471       FillRect(hDC, &rc, hbr);
1472       DeleteObject(hbr);
1473     }
1474     return 1;
1475   }
1476   case WM_COMMAND:
1477     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1478     return 0;
1479   case WM_KEYDOWN:
1480     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1481       ME_CommitUndo(editor);
1482       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1483       HideCaret(hWnd);
1484       ME_MoveCaret(editor);
1485       ShowCaret(hWnd);
1486       return 0;
1487     }
1488     if (GetKeyState(VK_CONTROL)<0)
1489     {
1490       if (LOWORD(wParam)=='W')
1491       {
1492         CHARFORMAT2W chf;
1493         char buf[2048];
1494         ME_GetSelectionCharFormat(editor, &chf);
1495         ME_DumpStyleToBuf(&chf, buf);
1496         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1497       }
1498       if (LOWORD(wParam)=='Q')
1499       {
1500         ME_CheckCharOffsets(editor);
1501       }
1502     }
1503     goto do_default;
1504   case WM_CHAR:
1505   {
1506     WCHAR wstr;
1507     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1508       MessageBeep(MB_ICONERROR);
1509       return 0; /* FIXME really 0 ? */
1510     }
1511     wstr = LOWORD(wParam);
1512     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
1513       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1514       ME_Style *style = ME_GetInsertStyle(editor, 0);
1515       ME_SaveTempStyle(editor);
1516       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1517       ME_ReleaseStyle(style);
1518       ME_CommitUndo(editor);
1519       ME_UpdateRepaint(editor);
1520     }
1521     return 0;
1522   }
1523   case WM_VSCROLL:
1524   {
1525     int nPos = editor->nScrollPosY;
1526     si.cbSize = sizeof(SCROLLINFO);
1527     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1528     GetScrollInfo(hWnd, SB_VERT, &si);
1529     switch(LOWORD(wParam)) {
1530     case SB_LINEUP:
1531       nPos -= 24; /* FIXME follow the original */
1532       if (nPos<0) nPos = 0;
1533       break;
1534     case SB_LINEDOWN:
1535     {
1536       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1537       nPos += 24; /* FIXME follow the original */
1538       if (nPos>=nEnd) nPos = nEnd;
1539       break;
1540     }
1541     case SB_PAGEUP:
1542       nPos -= editor->sizeWindow.cy;
1543       if (nPos<0) nPos = 0;
1544       break;
1545     case SB_PAGEDOWN:
1546       nPos += editor->sizeWindow.cy;
1547       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1548       break;
1549     case SB_THUMBTRACK:
1550     case SB_THUMBPOSITION:
1551       nPos = si.nTrackPos;
1552       break;
1553     }
1554     if (nPos != editor->nScrollPosY) {
1555       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1556       editor->nScrollPosY = nPos;
1557       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1558       UpdateWindow(hWnd);
1559     }
1560     break;
1561   }
1562   case WM_MOUSEWHEEL:
1563   {
1564     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1565     UINT pulScrollLines;
1566     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1567     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1568     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1569       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
1570     if (nPos>=nEnd)
1571       nPos = nEnd;
1572     if (nPos<0)
1573       nPos = 0;
1574     if (nPos != editor->nScrollPosY) {
1575       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1576       editor->nScrollPosY = nPos;
1577       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1578       UpdateWindow(hWnd);
1579     }
1580     break;
1581   }
1582   case WM_SIZE:
1583   {
1584     ME_MarkAllForWrapping(editor);
1585     ME_WrapMarkedParagraphs(editor);
1586     ME_UpdateScrollBar(editor);
1587     ME_Repaint(editor);
1588     return DefWindowProcW(hWnd, msg, wParam, lParam);
1589   }
1590   case EM_GETOLEINTERFACE:
1591   {
1592     LPVOID *ppvObj = (LPVOID*) lParam;
1593     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1594     return CreateIRichEditOle(ppvObj);
1595   }
1596   default:
1597   do_default:
1598     return DefWindowProcW(hWnd, msg, wParam, lParam);
1599   }
1600   return 0L;
1601 }
1602
1603 /******************************************************************
1604  *        RichEdit10ANSIWndProc (RICHED20.9)
1605  */
1606 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1607 {
1608   LRESULT result;
1609
1610   /* FIXME: this is NOT the same as 2.0 version */
1611   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1612   if (msg == WM_NCCREATE)
1613   {
1614     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1615
1616     editor->bEmulateVersion10 = TRUE;
1617     editor->pBuffer->pLast->member.para.nCharOfs = 2;
1618   }
1619   return result;
1620 }
1621
1622 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1623 {
1624   HWND hWnd = editor->hWnd;
1625   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1626 }
1627
1628 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1629 {
1630   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1631   int i = 0;
1632
1633   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1634     item = item->member.para.next_para;
1635   if (!item)
1636     return 0;
1637   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1638     item = item->member.para.next_para;
1639     i++;
1640   }
1641   return i;
1642 }
1643
1644
1645 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1646 {
1647   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1648   int nWritten = 0;
1649
1650   if (!item) {
1651     *buffer = L'\0';
1652     return 0;
1653   }
1654   assert(item);
1655
1656   if (nStart)
1657   {
1658     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1659     if (nLen > nChars)
1660       nLen = nChars;
1661     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1662     nChars -= nLen;
1663     nWritten += nLen;
1664     if (!nChars)
1665       return nWritten;
1666     buffer += nLen;
1667     nStart = 0;
1668     item = ME_FindItemFwd(item, diRun);
1669   }
1670
1671   while(nChars && item)
1672   {
1673     int nLen = ME_StrLen(item->member.run.strText);
1674     if (nLen > nChars)
1675       nLen = nChars;
1676
1677     if (item->member.run.nFlags & MERF_ENDPARA)
1678     {
1679       if (bCRLF) {
1680         *buffer++ = '\r';
1681         nWritten++;
1682       }
1683       *buffer = '\n';
1684       assert(nLen == 1);
1685     }
1686     else
1687       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1688     nChars -= nLen;
1689     nWritten += nLen;
1690     buffer += nLen;
1691
1692     if (!nChars)
1693     {
1694       *buffer = L'\0';
1695       return nWritten;
1696     }
1697     item = ME_FindItemFwd(item, diRun);
1698   }
1699   *buffer = L'\0';
1700   return nWritten;
1701 }
1702
1703 void ME_RegisterEditorClass(HINSTANCE hInstance)
1704 {
1705   BOOL bResult;
1706   WNDCLASSW wcW;
1707   WNDCLASSA wcA;
1708
1709   wcW.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
1710   wcW.lpfnWndProc = RichEditANSIWndProc;
1711   wcW.cbClsExtra = 0;
1712   wcW.cbWndExtra = 4;
1713   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1714   wcW.hIcon = NULL;
1715   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1716   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1717   wcW.lpszMenuName = NULL;
1718   wcW.lpszClassName = wszClassName;
1719   bResult = RegisterClassW(&wcW);
1720   assert(bResult);
1721   wcW.lpszClassName = wszClassName50;
1722   bResult = RegisterClassW(&wcW);
1723   assert(bResult);
1724
1725   wcA.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
1726   wcA.lpfnWndProc = RichEditANSIWndProc;
1727   wcA.cbClsExtra = 0;
1728   wcA.cbWndExtra = 4;
1729   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1730   wcA.hIcon = NULL;
1731   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1732   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1733   wcA.lpszMenuName = NULL;
1734   wcA.lpszClassName = "RichEdit20A";
1735   bResult = RegisterClassA(&wcA);
1736   assert(bResult);
1737   wcA.lpszClassName = "RichEdit50A";
1738   bResult = RegisterClassA(&wcA);
1739   assert(bResult);
1740 }
1741 /******************************************************************
1742  *        CreateTextServices (RICHED20.4)
1743  *
1744  * FIXME should be ITextHost instead of void*
1745  */
1746 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1747     IUnknown **ppUnk)
1748 {
1749   FIXME("stub\n");
1750   /* FIXME should support aggregation */
1751   if (punkOuter)
1752     return CLASS_E_NOAGGREGATION;
1753
1754   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1755 }
1756
1757 /******************************************************************
1758  *        REExtendedRegisterClass (RICHED20.8)
1759  *
1760  * FIXME undocumented
1761  */
1762 void WINAPI REExtendedRegisterClass(void)
1763 {
1764   FIXME("stub\n");
1765 }