dlls/riched20/editor.c

   1 /*
   2  * RichEdit - functions dealing with editor object
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  * Copyright 2005 by Cihan Altinay
   6  * Copyright 2005 by Phil Krylov
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /*
  24   API implementation status:
  25
  26   Messages (ANSI versions not done yet)
  27   + EM_AUTOURLDETECT 2.0
  28   + EM_CANPASTE
  29   + EM_CANREDO 2.0
  30   + EM_CANUNDO
  31   + EM_CHARFROMPOS
  32   - EM_DISPLAYBAND
  33   + EM_EMPTYUNDOBUFFER
  34   + EM_EXGETSEL
  35   + EM_EXLIMITTEXT
  36   + EM_EXLINEFROMCHAR
  37   + EM_EXSETSEL
  38   + EM_FINDTEXT (only FR_DOWN flag implemented)
  39   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  40   - EM_FINDWORDBREAK
  41   - EM_FMTLINES
  42   - EM_FORMATRANGE
  43   + EM_GETAUTOURLDETECT 2.0
  44   - EM_GETBIDIOPTIONS 3.0
  45   - EM_GETCHARFORMAT (partly done)
  46   - EM_GETEDITSTYLE
  47   + EM_GETEVENTMASK
  48   + EM_GETFIRSTVISIBLELINE (can be optimized if needed)
  49   - EM_GETIMECOLOR 1.0asian
  50   - EM_GETIMECOMPMODE 2.0
  51   - EM_GETIMEOPTIONS 1.0asian
  52   - EM_GETIMESTATUS
  53   - EM_GETLANGOPTIONS 2.0
  54   + EM_GETLIMITTEXT
  55   + EM_GETLINE
  56   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  57   + EM_GETMODIFY
  58   - EM_GETOLEINTERFACE
  59   + EM_GETOPTIONS
  60   + EM_GETPARAFORMAT
  61   + EM_GETPASSWORDCHAR 2.0
  62   - EM_GETPUNCTUATION 1.0asian
  63   + EM_GETRECT
  64   - EM_GETREDONAME 2.0
  65   + EM_GETSEL
  66   + EM_GETSELTEXT (ANSI&Unicode)
  67   + EM_GETSCROLLPOS 3.0 (only Y value valid)
  68 ! - EM_GETTHUMB
  69   + EM_GETTEXTEX 2.0
  70   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  71   - EM_GETTEXTMODE 2.0
  72 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  73   - EM_GETTYPOGRAPHYOPTIONS 3.0
  74   - EM_GETUNDONAME
  75   + EM_GETWORDBREAKPROC
  76   - EM_GETWORDBREAKPROCEX
  77   - EM_GETWORDWRAPMODE 1.0asian
  78   + EM_GETZOOM 3.0
  79   + EM_HIDESELECTION
  80   + EM_LIMITTEXT (Also called EM_SETLIMITTEXT)
  81   + EM_LINEFROMCHAR
  82   + EM_LINEINDEX
  83   + EM_LINELENGTH
  84   + EM_LINESCROLL
  85   - EM_PASTESPECIAL
  86   + EM_POSFROMCHAR
  87   + EM_REDO 2.0
  88   + EM_REQUESTRESIZE
  89   + EM_REPLACESEL (proper style?) ANSI&Unicode
  90   + EM_SCROLL
  91   + EM_SCROLLCARET
  92   - EM_SELECTIONTYPE
  93   - EM_SETBIDIOPTIONS 3.0
  94   + EM_SETBKGNDCOLOR
  95   + EM_SETCHARFORMAT (partly done, no ANSI)
  96   - EM_SETEDITSTYLE
  97   + EM_SETEVENTMASK (few notifications supported)
  98   - EM_SETFONTSIZE
  99   - EM_SETIMECOLOR 1.0asian
 100   - EM_SETIMEOPTIONS 1.0asian
 101   - EM_SETLANGOPTIONS 2.0
 102   - EM_SETLIMITTEXT
 103   + EM_SETMODIFY (not sure if implementation is correct)
 104   - EM_SETOLECALLBACK
 105   + EM_SETOPTIONS (partially implemented)
 106   - EM_SETPALETTE 2.0
 107   + EM_SETPARAFORMAT
 108   + EM_SETPASSWORDCHAR 2.0
 109   - EM_SETPUNCTUATION 1.0asian
 110   + EM_SETREADONLY no beep on modification attempt
 111   + EM_SETRECT
 112   + EM_SETRECTNP (EM_SETRECT without repainting)
 113   + EM_SETSEL
 114   + EM_SETSCROLLPOS 3.0
 115   - EM_SETTABSTOPS 3.0
 116   - EM_SETTARGETDEVICE
 117   + EM_SETTEXTEX 3.0 (no rich text insertion handling, proper style?)
 118   - EM_SETTEXTMODE 2.0
 119   - EM_SETTYPOGRAPHYOPTIONS 3.0
 120   + EM_SETUNDOLIMIT 2.0
 121   + EM_SETWORDBREAKPROC (used only for word movement at the moment)
 122   - EM_SETWORDBREAKPROCEX
 123   - EM_SETWORDWRAPMODE 1.0asian
 124   + EM_SETZOOM 3.0
 125   + EM_SHOWSCROLLBAR 2.0
 126   - EM_STOPGROUPTYPING 2.0
 127   + EM_STREAMIN
 128   + EM_STREAMOUT
 129   + EM_UNDO
 130   + WM_CHAR
 131   + WM_CLEAR
 132   + WM_COPY
 133   + WM_CUT
 134   + WM_GETDLGCODE (the current implementation is incomplete)
 135   + WM_GETTEXT (ANSI&Unicode)
 136   + WM_GETTEXTLENGTH (ANSI version sucks)
 137   + WM_PASTE
 138   + WM_SETFONT
 139   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 140   - WM_STYLECHANGING
 141   - WM_STYLECHANGED (things like read-only flag)
 142   - WM_UNICHAR
 143
 144   Notifications
 145
 146   * EN_CHANGE (sent from the wrong place)
 147   - EN_CORRECTTEXT
 148   - EN_DROPFILES
 149   - EN_ERRSPACE
 150   - EN_HSCROLL
 151   - EN_IMECHANGE
 152   + EN_KILLFOCUS
 153   - EN_LINK
 154   - EN_MAXTEXT
 155   - EN_MSGFILTER
 156   - EN_OLEOPFAILED
 157   - EN_PROTECTED
 158   + EN_REQUESTRESIZE
 159   - EN_SAVECLIPBOARD
 160   + EN_SELCHANGE
 161   + EN_SETFOCUS
 162   - EN_STOPNOUNDO
 163   * EN_UPDATE (sent from the wrong place)
 164   - EN_VSCROLL
 165
 166   Styles
 167
 168   - ES_AUTOHSCROLL
 169   - ES_AUTOVSCROLL
 170   - ES_CENTER
 171   + ES_DISABLENOSCROLL (scrollbar is always visible)
 172   - ES_EX_NOCALLOLEINIT
 173   - ES_LEFT
 174   - ES_MULTILINE (currently single line controls aren't supported)
 175   - ES_NOIME
 176   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 177   - ES_RIGHT
 178   - ES_SAVESEL
 179   - ES_SELFIME
 180   - ES_SUNKEN
 181   - ES_VERTICAL
 182   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 183   - WS_SETFONT
 184   - WS_HSCROLL
 185   + WS_VSCROLL
 186 */
 187
 188 /*
 189  * RICHED20 TODO (incomplete):
 190  *
 191  * - messages/styles/notifications listed above
 192  * - Undo coalescing
 193  * - add remaining CHARFORMAT/PARAFORMAT fields
 194  * - right/center align should strip spaces from the beginning
 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  * - full justification
 209  * - hyphenation
 210  * - tables
 211  * - ListBox & ComboBox not implemented
 212  *
 213  * Bugs that are probably fixed, but not so easy to verify:
 214  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 215  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 216  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 217  * - caret shouldn't be displayed when selection isn't empty
 218  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 219  * - undo for setting default format (done, might be buggy)
 220  * - styles might be not released properly (looks like they work like charm, but who knows?
 221  *
 222  */
 223
 224 #include "editor.h"
 225 #include "commdlg.h"
 226 #include "winreg.h"
 227 #define NO_SHLWAPI_STREAM
 228 #include "shlwapi.h"
 229 #include "rtf.h"
 230 #include "imm.h"
 231
 232 #define STACK_SIZE_DEFAULT  100
 233 #define STACK_SIZE_MAX     1000
 234
 235 #define TEXT_LIMIT_DEFAULT 32767
 236
 237 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 238
 239 static BOOL ME_RegisterEditorClass(HINSTANCE);
 240
 241 static const WCHAR RichEdit20W[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 242 static const WCHAR RichEdit50W[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 243 static const WCHAR REListBox20W[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
 244 static const WCHAR REComboBox20W[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
 245
 246 int me_debug = 0;
 247 HANDLE me_heap = NULL;
 248
 249 static BOOL ME_ListBoxRegistered = FALSE;
 250 static BOOL ME_ComboBoxRegistered = FALSE;
 251
 252 static inline int is_version_nt(void)
 253 {
 254     return !(GetVersion() & 0x80000000);
 255 }
 256
 257 static ME_TextBuffer *ME_MakeText(void) {
 258
 259   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 260
 261   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 262   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 263
 264   p1->prev = NULL;
 265   p1->next = p2;
 266   p2->prev = p1;
 267   p2->next = NULL;
 268   p1->member.para.next_para = p2;
 269   p2->member.para.prev_para = p1;
 270   p2->member.para.nCharOfs = 0;
 271
 272   buf->pFirst = p1;
 273   buf->pLast = p2;
 274   buf->pCharStyle = NULL;
 275
 276   return buf;
 277 }
 278
 279
 280 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 281 {
 282   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 283   WCHAR *pText;
 284
 285   TRACE("%08x %p\n", dwFormat, stream);
 286
 287   do {
 288     long nWideChars = 0;
 289
 290     if (!stream->dwSize)
 291     {
 292       ME_StreamInFill(stream);
 293       if (stream->editstream->dwError)
 294         break;
 295       if (!stream->dwSize)
 296         break;
 297     }
 298
 299     if (!(dwFormat & SF_UNICODE))
 300     {
 301       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 302       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 303       pText = wszText;
 304     }
 305     else
 306     {
 307       nWideChars = stream->dwSize >> 1;
 308       pText = (WCHAR *)stream->buffer;
 309     }
 310
 311     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 312     if (stream->dwSize == 0)
 313       break;
 314     stream->dwSize = 0;
 315   } while(1);
 316   ME_CommitUndo(editor);
 317   ME_UpdateRepaint(editor);
 318   return 0;
 319 }
 320
 321 static void ME_RTFCharAttrHook(RTF_Info *info)
 322 {
 323   CHARFORMAT2W fmt;
 324   fmt.cbSize = sizeof(fmt);
 325   fmt.dwMask = 0;
 326   fmt.dwEffects = 0;
 327
 328   switch(info->rtfMinor)
 329   {
 330     case rtfPlain:
 331       /* FIXME add more flags once they're implemented */
 332       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 333       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 334       fmt.yHeight = 12*20; /* 12pt */
 335       fmt.wWeight = 400;
 336       break;
 337     case rtfBold:
 338       fmt.dwMask = CFM_BOLD;
 339       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 340       break;
 341     case rtfItalic:
 342       fmt.dwMask = CFM_ITALIC;
 343       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 344       break;
 345     case rtfUnderline:
 346       fmt.dwMask = CFM_UNDERLINE;
 347       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 348       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 349       break;
 350     case rtfNoUnderline:
 351       fmt.dwMask = CFM_UNDERLINE;
 352       fmt.dwEffects = 0;
 353       break;
 354     case rtfStrikeThru:
 355       fmt.dwMask = CFM_STRIKEOUT;
 356       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 357       break;
 358     case rtfSubScript:
 359     case rtfSuperScript:
 360     case rtfSubScrShrink:
 361     case rtfSuperScrShrink:
 362     case rtfNoSuperSub:
 363       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 364       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 365       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 366       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 367       break;
 368     case rtfInvisible:
 369       fmt.dwMask = CFM_HIDDEN;
 370       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 371       break;
 372     case rtfBackColor:
 373       fmt.dwMask = CFM_BACKCOLOR;
 374       fmt.dwEffects = 0;
 375       if (info->rtfParam == 0)
 376         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 377       else if (info->rtfParam != rtfNoParam)
 378       {
 379         RTFColor *c = RTFGetColor(info, info->rtfParam);
 380         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 381       }
 382       break;
 383     case rtfForeColor:
 384       fmt.dwMask = CFM_COLOR;
 385       fmt.dwEffects = 0;
 386       if (info->rtfParam == 0)
 387         fmt.dwEffects = CFE_AUTOCOLOR;
 388       else if (info->rtfParam != rtfNoParam)
 389       {
 390         RTFColor *c = RTFGetColor(info, info->rtfParam);
 391         if (c)
 392           fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 393         else
 394           fmt.crTextColor = 0;
 395       }
 396       break;
 397     case rtfFontNum:
 398       if (info->rtfParam != rtfNoParam)
 399       {
 400         RTFFont *f = RTFGetFont(info, info->rtfParam);
 401         if (f)
 402         {
 403           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 404           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 405           fmt.bCharSet = f->rtfFCharSet;
 406           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 407         }
 408       }
 409       break;
 410     case rtfFontSize:
 411       fmt.dwMask = CFM_SIZE;
 412       if (info->rtfParam != rtfNoParam)
 413         fmt.yHeight = info->rtfParam*10;
 414       break;
 415   }
 416   if (fmt.dwMask) {
 417     ME_Style *style2;
 418     RTFFlushOutputBuffer(info);
 419     /* FIXME too slow ? how come ? */
 420     style2 = ME_ApplyStyle(info->style, &fmt);
 421     ME_ReleaseStyle(info->style);
 422     info->style = style2;
 423     info->styleChanged = TRUE;
 424   }
 425 }
 426
 427 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 428    the same tags mean different things in different contexts */
 429 static void ME_RTFParAttrHook(RTF_Info *info)
 430 {
 431   PARAFORMAT2 fmt;
 432   fmt.cbSize = sizeof(fmt);
 433   fmt.dwMask = 0;
 434
 435   switch(info->rtfMinor)
 436   {
 437   case rtfParDef: /* restores default paragraph attributes */
 438     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 439     fmt.wAlignment = PFA_LEFT;
 440     fmt.cTabCount = 0;
 441     fmt.dxOffset = fmt.dxStartIndent = 0;
 442     RTFFlushOutputBuffer(info);
 443     ME_GetParagraph(info->editor->pCursors[0].pRun)->member.para.bTable = FALSE;
 444     break;
 445   case rtfInTable:
 446   {
 447     ME_DisplayItem *para;
 448
 449     RTFFlushOutputBuffer(info);
 450     para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 451     assert(para->member.para.pCells);
 452     para->member.para.bTable = TRUE;
 453     return;
 454   }
 455   case rtfFirstIndent:
 456     ME_GetSelectionParaFormat(info->editor, &fmt);
 457     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 458     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 459     fmt.dxOffset = -info->rtfParam;
 460     break;
 461   case rtfLeftIndent:
 462     ME_GetSelectionParaFormat(info->editor, &fmt);
 463     fmt.dwMask = PFM_STARTINDENT;
 464     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 465     break;
 466   case rtfRightIndent:
 467     fmt.dwMask = PFM_RIGHTINDENT;
 468     fmt.dxRightIndent = info->rtfParam;
 469     break;
 470   case rtfQuadLeft:
 471   case rtfQuadJust:
 472     fmt.dwMask = PFM_ALIGNMENT;
 473     fmt.wAlignment = PFA_LEFT;
 474     break;
 475   case rtfQuadRight:
 476     fmt.dwMask = PFM_ALIGNMENT;
 477     fmt.wAlignment = PFA_RIGHT;
 478     break;
 479   case rtfQuadCenter:
 480     fmt.dwMask = PFM_ALIGNMENT;
 481     fmt.wAlignment = PFA_CENTER;
 482     break;
 483   case rtfTabPos:
 484     ME_GetSelectionParaFormat(info->editor, &fmt);
 485     if (!(fmt.dwMask & PFM_TABSTOPS))
 486     {
 487       fmt.dwMask |= PFM_TABSTOPS;
 488       fmt.cTabCount = 0;
 489     }
 490     if (fmt.cTabCount < MAX_TAB_STOPS)
 491       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 492     break;
 493   }
 494   if (fmt.dwMask) {
 495     RTFFlushOutputBuffer(info);
 496     /* FIXME too slow ? how come ?*/
 497     ME_SetSelectionParaFormat(info->editor, &fmt);
 498   }
 499 }
 500
 501 static void ME_RTFTblAttrHook(RTF_Info *info)
 502 {
 503   ME_DisplayItem *para;
 504
 505   switch (info->rtfMinor)
 506   {
 507     case rtfRowDef:
 508       RTFFlushOutputBuffer(info);
 509       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 510
 511       /* Release possibly inherited cell definitions */
 512       ME_DestroyTableCellList(para);
 513
 514       para->member.para.pCells = ALLOC_OBJ(ME_TableCell);
 515       para->member.para.pCells->nRightBoundary = 0;
 516       para->member.para.pCells->next = NULL;
 517       para->member.para.pLastCell = para->member.para.pCells;
 518       break;
 519     case rtfCellPos:
 520       RTFFlushOutputBuffer(info);
 521       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 522
 523       if (para->member.para.pLastCell->nRightBoundary)
 524       {
 525         ME_TableCell *pCell = ALLOC_OBJ(ME_TableCell);
 526
 527         pCell->next = NULL;
 528         para->member.para.pLastCell->next = pCell;
 529         para->member.para.pLastCell = pCell;
 530       }
 531       para->member.para.pLastCell->nRightBoundary = info->rtfParam;
 532       break;
 533   }
 534 }
 535
 536 static void ME_RTFReadHook(RTF_Info *info) {
 537   switch(info->rtfClass)
 538   {
 539     case rtfGroup:
 540       switch(info->rtfMajor)
 541       {
 542         case rtfBeginGroup:
 543           if (info->stackTop < maxStack) {
 544             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 545             info->stack[info->stackTop].codePage = info->codePage;
 546             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 547           }
 548           info->stackTop++;
 549           info->styleChanged = FALSE;
 550           break;
 551         case rtfEndGroup:
 552         {
 553           ME_Style *s;
 554           RTFFlushOutputBuffer(info);
 555           if (info->stackTop<=1) {
 556             info->rtfClass = rtfEOF;
 557             return;
 558           }
 559           info->stackTop--;
 560           assert(info->stackTop >= 0);
 561           if (info->styleChanged)
 562           {
 563             /* FIXME too slow ? how come ? */
 564             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 565             ME_ReleaseStyle(info->style);
 566             info->style = s;
 567             info->codePage = info->stack[info->stackTop].codePage;
 568             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 569           }
 570           break;
 571         }
 572       }
 573       break;
 574     case rtfControl:
 575       switch(info->rtfMajor)
 576       {
 577         case rtfCharAttr:
 578           ME_RTFCharAttrHook(info);
 579           break;
 580         case rtfParAttr:
 581           ME_RTFParAttrHook(info);
 582           break;
 583         case rtfTblAttr:
 584           ME_RTFTblAttrHook(info);
 585           break;
 586         case rtfSpecialChar:
 587           if (info->rtfMinor == rtfCell)
 588           {
 589             RTFFlushOutputBuffer(info);
 590             ME_InsertTableCellFromCursor(info->editor, 0);
 591           }
 592       }
 593       break;
 594   }
 595 }
 596
 597 void
 598 ME_StreamInFill(ME_InStream *stream)
 599 {
 600   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 601                                                                 (BYTE *)stream->buffer,
 602                                                                 sizeof(stream->buffer),
 603                                                                 (LONG *)&stream->dwSize);
 604   stream->dwUsed = 0;
 605 }
 606
 607 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 608 {
 609   RTF_Info parser;
 610   ME_Style *style;
 611   int from, to, to2, nUndoMode;
 612   int nEventMask = editor->nEventMask;
 613   ME_InStream inStream;
 614
 615   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 616   editor->nEventMask = 0;
 617
 618   ME_GetSelection(editor, &from, &to);
 619   if ((format & SFF_SELECTION) && (editor->mode & TM_RICHTEXT)) {
 620     style = ME_GetSelectionInsertStyle(editor);
 621
 622     ME_InternalDeleteText(editor, from, to-from);
 623   }
 624   else {
 625     style = editor->pBuffer->pDefaultStyle;
 626     ME_AddRefStyle(style);
 627     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 628     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 629     from = to = 0;
 630     ME_ClearTempStyle(editor);
 631     /* FIXME restore default paragraph formatting ! */
 632   }
 633
 634
 635   /* Back up undo mode to a local variable */
 636   nUndoMode = editor->nUndoMode;
 637
 638   /* Only create an undo if SFF_SELECTION is set */
 639   if (!(format & SFF_SELECTION))
 640     editor->nUndoMode = umIgnore;
 641
 642   inStream.editstream = stream;
 643   inStream.editstream->dwError = 0;
 644   inStream.dwSize = 0;
 645   inStream.dwUsed = 0;
 646
 647   if (format & SF_RTF)
 648   {
 649     /* Check if it's really RTF, and if it is not, use plain text */
 650     ME_StreamInFill(&inStream);
 651     if (!inStream.editstream->dwError)
 652     {
 653       if (strncmp(inStream.buffer, "{\\rtf", 5) && strncmp(inStream.buffer, "{\\urtf", 6))
 654       {
 655         format &= ~SF_RTF;
 656         format |= SF_TEXT;
 657       }
 658     }
 659   }
 660
 661   if (!inStream.editstream->dwError)
 662   {
 663     if (format & SF_RTF) {
 664       /* setup the RTF parser */
 665       memset(&parser, 0, sizeof parser);
 666       RTFSetEditStream(&parser, &inStream);
 667       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 668       parser.hwndEdit = editor->hWnd;
 669       parser.editor = editor;
 670       parser.style = style;
 671       WriterInit(&parser);
 672       RTFInit(&parser);
 673       RTFSetReadHook(&parser, ME_RTFReadHook);
 674       BeginFile(&parser);
 675
 676       /* do the parsing */
 677       RTFRead(&parser);
 678       RTFFlushOutputBuffer(&parser);
 679       RTFDestroy(&parser);
 680
 681       style = parser.style;
 682     }
 683     else if (format & SF_TEXT)
 684       ME_StreamInText(editor, format, &inStream, style);
 685     else
 686       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 687     ME_GetSelection(editor, &to, &to2);
 688     /* put the cursor at the top */
 689     if (!(format & SFF_SELECTION))
 690       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 691   }
 692
 693   /* Restore saved undo mode */
 694   editor->nUndoMode = nUndoMode;
 695
 696   /* even if we didn't add an undo, we need to commit anything on the stack */
 697   ME_CommitUndo(editor);
 698
 699   /* If SFF_SELECTION isn't set, delete any undos from before we started too */
 700   if (!(format & SFF_SELECTION))
 701     ME_EmptyUndoStack(editor);
 702
 703   ME_ReleaseStyle(style);
 704   editor->nEventMask = nEventMask;
 705   if (editor->bRedraw)
 706   {
 707     ME_UpdateRepaint(editor);
 708   }
 709   if (!(format & SFF_SELECTION)) {
 710     ME_ClearTempStyle(editor);
 711   }
 712   ME_MoveCaret(editor);
 713   ME_SendSelChange(editor);
 714   ME_SendRequestResize(editor, FALSE);
 715
 716   return 0;
 717 }
 718
 719
 720 typedef struct tagME_RTFStringStreamStruct
 721 {
 722   char *string;
 723   int pos;
 724   int length;
 725 } ME_RTFStringStreamStruct;
 726
 727 static DWORD CALLBACK ME_ReadFromRTFString(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 728 {
 729   ME_RTFStringStreamStruct *pStruct = (ME_RTFStringStreamStruct *)dwCookie;
 730   int count;
 731
 732   count = min(cb, pStruct->length - pStruct->pos);
 733   memmove(lpBuff, pStruct->string + pStruct->pos, count);
 734   pStruct->pos += count;
 735   *pcb = count;
 736   return 0;
 737 }
 738
 739 static void
 740 ME_StreamInRTFString(ME_TextEditor *editor, BOOL selection, char *string)
 741 {
 742   EDITSTREAM es;
 743   ME_RTFStringStreamStruct data;
 744
 745   data.string = string;
 746   data.length = strlen(string);
 747   data.pos = 0;
 748   es.dwCookie = (DWORD)&data;
 749   es.pfnCallback = ME_ReadFromRTFString;
 750   ME_StreamIn(editor, SF_RTF | (selection ? SFF_SELECTION : 0), &es);
 751 }
 752
 753
 754 ME_DisplayItem *
 755 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 756 {
 757   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 758
 759   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 760     item = ME_FindItemFwd(item, diParagraph);
 761
 762   if (!item)
 763     return item;
 764
 765   nOffset -= item->member.para.nCharOfs;
 766   if (nItemType == diParagraph) {
 767     if (nItemOffset)
 768       *nItemOffset = nOffset;
 769     return item;
 770   }
 771
 772   do {
 773     item = ME_FindItemFwd(item, diRun);
 774   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 775   if (item) {
 776     nOffset -= item->member.run.nCharOfs;
 777     if (nItemOffset)
 778       *nItemOffset = nOffset;
 779   }
 780   return item;
 781 }
 782
 783
 784 static int
 785 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
 786 {
 787   const int nLen = lstrlenW(text);
 788   const int nTextLen = ME_GetTextLength(editor);
 789   int nStart, nEnd;
 790   int nMin, nMax;
 791   ME_DisplayItem *item;
 792   ME_DisplayItem *para;
 793   WCHAR wLastChar = ' ';
 794
 795   TRACE("flags==0x%08x, chrg->cpMin==%d, chrg->cpMax==%d text==%s\n",
 796         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 797
 798   if (flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD))
 799     FIXME("Flags 0x%08x not implemented\n",
 800         flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD));
 801
 802   nMin = chrg->cpMin;
 803   if (chrg->cpMax == -1)
 804     nMax = nTextLen;
 805   else
 806     nMax = chrg->cpMax > nTextLen ? nTextLen : chrg->cpMax;
 807
 808   /* when searching up, if cpMin < cpMax, then instead of searching
 809    * on [cpMin,cpMax], we search on [0,cpMin], otherwise, search on
 810    * [cpMax, cpMin]. The exception is when cpMax is -1, in which
 811    * case, it is always bigger than cpMin.
 812    */
 813   if (!(flags & FR_DOWN))
 814   {
 815     int nSwap = nMax;
 816
 817     nMax = nMin > nTextLen ? nTextLen : nMin;
 818     if (nMin < nSwap || chrg->cpMax == -1)
 819       nMin = 0;
 820     else
 821       nMin = nSwap;
 822   }
 823
 824   if (!nLen || nMin < 0 || nMax < 0 || nMax < nMin)
 825   {
 826     if (chrgText)
 827       chrgText->cpMin = chrgText->cpMax = -1;
 828     return -1;
 829   }
 830
 831   if (flags & FR_DOWN) /* Forward search */
 832   {
 833     /* If possible, find the character before where the search starts */
 834     if ((flags & FR_WHOLEWORD) && nMin)
 835     {
 836       nStart = nMin - 1;
 837       item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 838       if (!item)
 839       {
 840         if (chrgText)
 841           chrgText->cpMin = chrgText->cpMax = -1;
 842         return -1;
 843       }
 844       wLastChar = item->member.run.strText->szData[nStart];
 845     }
 846
 847     nStart = nMin;
 848     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 849     if (!item)
 850     {
 851       if (chrgText)
 852         chrgText->cpMin = chrgText->cpMax = -1;
 853       return -1;
 854     }
 855
 856     para = ME_GetParagraph(item);
 857     while (item
 858            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen <= nMax)
 859     {
 860       ME_DisplayItem *pCurItem = item;
 861       int nCurStart = nStart;
 862       int nMatched = 0;
 863
 864       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurStart + nMatched], text[nMatched], (flags & FR_MATCHCASE)))
 865       {
 866         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 867           break;
 868
 869         nMatched++;
 870         if (nMatched == nLen)
 871         {
 872           ME_DisplayItem *pNextItem = pCurItem;
 873           int nNextStart = nCurStart;
 874           WCHAR wNextChar;
 875
 876           /* Check to see if next character is a whitespace */
 877           if (flags & FR_WHOLEWORD)
 878           {
 879             if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 880             {
 881               pNextItem = ME_FindItemFwd(pCurItem, diRun);
 882               nNextStart = -nMatched;
 883             }
 884
 885             if (pNextItem)
 886               wNextChar = pNextItem->member.run.strText->szData[nNextStart + nMatched];
 887             else
 888               wNextChar = ' ';
 889
 890             if (isalnumW(wNextChar))
 891               break;
 892           }
 893
 894           nStart += para->member.para.nCharOfs + pCurItem->member.run.nCharOfs;
 895           if (chrgText)
 896           {
 897             chrgText->cpMin = nStart;
 898             chrgText->cpMax = nStart + nLen;
 899           }
 900           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 901           return nStart;
 902         }
 903         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 904         {
 905           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 906           para = ME_GetParagraph(pCurItem);
 907           nCurStart = -nMatched;
 908         }
 909       }
 910       if (pCurItem)
 911         wLastChar = pCurItem->member.run.strText->szData[nCurStart + nMatched];
 912       else
 913         wLastChar = ' ';
 914
 915       nStart++;
 916       if (nStart == ME_StrLen(item->member.run.strText))
 917       {
 918         item = ME_FindItemFwd(item, diRun);
 919         para = ME_GetParagraph(item);
 920         nStart = 0;
 921       }
 922     }
 923   }
 924   else /* Backward search */
 925   {
 926     /* If possible, find the character after where the search ends */
 927     if ((flags & FR_WHOLEWORD) && nMax < nTextLen - 1)
 928     {
 929       nEnd = nMax + 1;
 930       item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 931       if (!item)
 932       {
 933         if (chrgText)
 934           chrgText->cpMin = chrgText->cpMax = -1;
 935         return -1;
 936       }
 937       wLastChar = item->member.run.strText->szData[nEnd];
 938     }
 939
 940     nEnd = nMax;
 941     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 942     if (!item)
 943     {
 944       if (chrgText)
 945         chrgText->cpMin = chrgText->cpMax = -1;
 946       return -1;
 947     }
 948
 949     para = ME_GetParagraph(item);
 950
 951     while (item
 952            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 953     {
 954       ME_DisplayItem *pCurItem = item;
 955       int nCurEnd = nEnd;
 956       int nMatched = 0;
 957
 958       if (nCurEnd - nMatched == 0)
 959       {
 960         pCurItem = ME_FindItemBack(pCurItem, diRun);
 961         para = ME_GetParagraph(pCurItem);
 962         nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 963       }
 964
 965       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1], text[nLen - nMatched - 1], (flags & FR_MATCHCASE)))
 966       {
 967         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 968           break;
 969
 970         nMatched++;
 971         if (nMatched == nLen)
 972         {
 973           ME_DisplayItem *pPrevItem = pCurItem;
 974           int nPrevEnd = nCurEnd;
 975           WCHAR wPrevChar;
 976
 977           /* Check to see if previous character is a whitespace */
 978           if (flags & FR_WHOLEWORD)
 979           {
 980             if (nPrevEnd - nMatched == 0)
 981             {
 982               pPrevItem = ME_FindItemBack(pCurItem, diRun);
 983               if (pPrevItem)
 984                 nPrevEnd = ME_StrLen(pPrevItem->member.run.strText) + nMatched;
 985             }
 986
 987             if (pPrevItem)
 988               wPrevChar = pPrevItem->member.run.strText->szData[nPrevEnd - nMatched - 1];
 989             else
 990               wPrevChar = ' ';
 991
 992             if (isalnumW(wPrevChar))
 993               break;
 994           }
 995
 996           nStart = para->member.para.nCharOfs + pCurItem->member.run.nCharOfs + nCurEnd - nMatched;
 997           if (chrgText)
 998           {
 999             chrgText->cpMin = nStart;
1000             chrgText->cpMax = nStart + nLen;
1001           }
1002           TRACE("found at %d-%d\n", nStart, nStart + nLen);
1003           return nStart;
1004         }
1005         if (nCurEnd - nMatched == 0)
1006         {
1007           pCurItem = ME_FindItemBack(pCurItem, diRun);
1008           /* Don't care about pCurItem becoming NULL here; it's already taken
1009            * care of in the exterior loop condition */
1010           para = ME_GetParagraph(pCurItem);
1011           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
1012         }
1013       }
1014       if (pCurItem)
1015         wLastChar = pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1];
1016       else
1017         wLastChar = ' ';
1018
1019       nEnd--;
1020       if (nEnd < 0)
1021       {
1022         item = ME_FindItemBack(item, diRun);
1023         para = ME_GetParagraph(item);
1024         nEnd = ME_StrLen(item->member.run.strText);
1025       }
1026     }
1027   }
1028   TRACE("not found\n");
1029   if (chrgText)
1030     chrgText->cpMin = chrgText->cpMax = -1;
1031   return -1;
1032 }
1033
1034
1035 static BOOL
1036 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
1037 {
1038   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
1039   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
1040
1041   switch (nKey)
1042   {
1043     case VK_LEFT:
1044     case VK_RIGHT:
1045     case VK_UP:
1046     case VK_DOWN:
1047     case VK_HOME:
1048     case VK_END:
1049     case VK_PRIOR:
1050     case VK_NEXT:
1051       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
1052       return TRUE;
1053     case VK_BACK:
1054     case VK_DELETE:
1055       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
1056       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
1057         return FALSE;
1058       if (ME_IsSelection(editor))
1059         ME_DeleteSelection(editor);
1060       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
1061         ME_DeleteTextAtCursor(editor, 1, 1);
1062       else
1063         return TRUE;
1064       ME_CommitUndo(editor);
1065       ME_UpdateRepaint(editor);
1066       ME_SendRequestResize(editor, FALSE);
1067       return TRUE;
1068
1069     default:
1070       if (ctrl_is_down)
1071       {
1072         if (nKey == 'W')
1073         {
1074           CHARFORMAT2W chf;
1075           char buf[2048];
1076           chf.cbSize = sizeof(chf);
1077
1078           ME_GetSelectionCharFormat(editor, &chf);
1079           ME_DumpStyleToBuf(&chf, buf);
1080           MessageBoxA(NULL, buf, "Style dump", MB_OK);
1081         }
1082         if (nKey == 'Q')
1083         {
1084           ME_CheckCharOffsets(editor);
1085         }
1086       }
1087   }
1088   return FALSE;
1089 }
1090
1091 static BOOL ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
1092 {
1093   CHARRANGE selrange;
1094   HMENU menu;
1095   int seltype = 0;
1096   if(!editor->lpOleCallback)
1097     return FALSE;
1098   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
1099   if(selrange.cpMin == selrange.cpMax)
1100     seltype |= SEL_EMPTY;
1101   else
1102   {
1103     /* FIXME: Handle objects */
1104     seltype |= SEL_TEXT;
1105     if(selrange.cpMax-selrange.cpMin > 1)
1106       seltype |= SEL_MULTICHAR;
1107   }
1108   if(SUCCEEDED(IRichEditOleCallback_GetContextMenu(editor->lpOleCallback, seltype, NULL, &selrange, &menu)))
1109   {
1110     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
1111     DestroyMenu(menu);
1112   }
1113   return TRUE;
1114 }
1115
1116 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
1117   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
1118   HDC hDC;
1119   int i;
1120   ed->hWnd = hWnd;
1121   ed->bEmulateVersion10 = FALSE;
1122   ed->pBuffer = ME_MakeText();
1123   hDC = GetDC(hWnd);
1124   ME_MakeFirstParagraph(hDC, ed->pBuffer);
1125   ReleaseDC(hWnd, hDC);
1126   ed->bCaretShown = FALSE;
1127   ed->nCursors = 2;
1128   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
1129   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1130   ed->pCursors[0].nOffset = 0;
1131   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1132   ed->pCursors[1].nOffset = 0;
1133   ed->nLastTotalLength = ed->nTotalLength = 0;
1134   ed->nUDArrowX = -1;
1135   ed->nSequence = 0;
1136   ed->rgbBackColor = -1;
1137   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1138   ed->bCaretAtEnd = FALSE;
1139   ed->nEventMask = 0;
1140   ed->nModifyStep = 0;
1141   ed->nTextLimit = TEXT_LIMIT_DEFAULT;
1142   ed->pUndoStack = ed->pRedoStack = ed->pUndoStackBottom = NULL;
1143   ed->nUndoStackSize = 0;
1144   ed->nUndoLimit = STACK_SIZE_DEFAULT;
1145   ed->nUndoMode = umAddToUndo;
1146   ed->nParagraphs = 1;
1147   ed->nLastSelStart = ed->nLastSelEnd = 0;
1148   ed->pLastSelStartPara = ed->pLastSelEndPara = ME_FindItemFwd(ed->pBuffer->pFirst, diParagraph);
1149   ed->nZoomNumerator = ed->nZoomDenominator = 0;
1150   ed->bRedraw = TRUE;
1151   ed->bHideSelection = FALSE;
1152   ed->nInvalidOfs = -1;
1153   ed->pfnWordBreak = NULL;
1154   ed->lpOleCallback = NULL;
1155   ed->mode = TM_RICHTEXT | TM_MULTILEVELUNDO | TM_MULTICODEPAGE;
1156   ed->AutoURLDetect_bEnable = FALSE;
1157   ed->bHaveFocus = FALSE;
1158   GetClientRect(hWnd, &ed->rcFormat);
1159   for (i=0; i<HFONT_CACHE_SIZE; i++)
1160   {
1161     ed->pFontCache[i].nRefs = 0;
1162     ed->pFontCache[i].nAge = 0;
1163     ed->pFontCache[i].hFont = NULL;
1164   }
1165
1166   ME_CheckCharOffsets(ed);
1167
1168   if (GetWindowLongW(hWnd, GWL_STYLE) & ES_PASSWORD)
1169     ed->cPasswordMask = '*';
1170   else
1171     ed->cPasswordMask = 0;
1172
1173   return ed;
1174 }
1175
1176 typedef struct tagME_GlobalDestStruct
1177 {
1178   HGLOBAL hData;
1179   int nLength;
1180 } ME_GlobalDestStruct;
1181
1182 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1183 {
1184   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1185   int i;
1186   WORD *pSrc, *pDest;
1187
1188   cb = cb >> 1;
1189   pDest = (WORD *)lpBuff;
1190   pSrc = (WORD *)GlobalLock(pData->hData);
1191   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1192     pDest[i] = pSrc[pData->nLength+i];
1193   }
1194   pData->nLength += i;
1195   *pcb = 2*i;
1196   GlobalUnlock(pData->hData);
1197   return 0;
1198 }
1199
1200 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1201 {
1202   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1203   int i;
1204   BYTE *pSrc, *pDest;
1205
1206   pDest = lpBuff;
1207   pSrc = (BYTE *)GlobalLock(pData->hData);
1208   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1209     pDest[i] = pSrc[pData->nLength+i];
1210   }
1211   pData->nLength += i;
1212   *pcb = i;
1213   GlobalUnlock(pData->hData);
1214   return 0;
1215 }
1216
1217
1218 void ME_DestroyEditor(ME_TextEditor *editor)
1219 {
1220   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
1221   ME_DisplayItem *p = pFirst, *pNext = NULL;
1222   int i;
1223
1224   ME_ClearTempStyle(editor);
1225   ME_EmptyUndoStack(editor);
1226   while(p) {
1227     pNext = p->next;
1228     ME_DestroyDisplayItem(p);
1229     p = pNext;
1230   }
1231   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
1232   for (i=0; i<HFONT_CACHE_SIZE; i++)
1233   {
1234     if (editor->pFontCache[i].hFont)
1235       DeleteObject(editor->pFontCache[i].hFont);
1236   }
1237   DeleteObject(editor->hbrBackground);
1238   if(editor->lpOleCallback)
1239     IUnknown_Release(editor->lpOleCallback);
1240
1241   FREE_OBJ(editor->pBuffer);
1242   FREE_OBJ(editor->pCursors);
1243
1244   FREE_OBJ(editor);
1245 }
1246
1247 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1248 {
1249     TRACE("\n");
1250     switch (fdwReason)
1251     {
1252     case DLL_PROCESS_ATTACH:
1253       DisableThreadLibraryCalls(hinstDLL);
1254       me_heap = HeapCreate (0, 0x10000, 0);
1255       if (!ME_RegisterEditorClass(hinstDLL)) return FALSE;
1256       LookupInit();
1257       break;
1258
1259     case DLL_PROCESS_DETACH:
1260       UnregisterClassW(RichEdit20W, 0);
1261       UnregisterClassW(RichEdit50W, 0);
1262       UnregisterClassA("RichEdit20A", 0);
1263       UnregisterClassA("RichEdit50A", 0);
1264       if (ME_ListBoxRegistered)
1265           UnregisterClassW(REListBox20W, 0);
1266       if (ME_ComboBoxRegistered)
1267           UnregisterClassW(REComboBox20W, 0);
1268       LookupCleanup();
1269       HeapDestroy (me_heap);
1270       me_heap = NULL;
1271       break;
1272     }
1273     return TRUE;
1274 }
1275
1276
1277 #define UNSUPPORTED_MSG(e) \
1278   case e: \
1279     FIXME(#e ": stub\n"); \
1280     return DefWindowProcW(hWnd, msg, wParam, lParam);
1281
1282 static const char * const edit_messages[] = {
1283   "EM_GETSEL",
1284   "EM_SETSEL",
1285   "EM_GETRECT",
1286   "EM_SETRECT",
1287   "EM_SETRECTNP",
1288   "EM_SCROLL",
1289   "EM_LINESCROLL",
1290   "EM_SCROLLCARET",
1291   "EM_GETMODIFY",
1292   "EM_SETMODIFY",
1293   "EM_GETLINECOUNT",
1294   "EM_LINEINDEX",
1295   "EM_SETHANDLE",
1296   "EM_GETHANDLE",
1297   "EM_GETTHUMB",
1298   "EM_UNKNOWN_BF",
1299   "EM_UNKNOWN_C0",
1300   "EM_LINELENGTH",
1301   "EM_REPLACESEL",
1302   "EM_UNKNOWN_C3",
1303   "EM_GETLINE",
1304   "EM_LIMITTEXT",
1305   "EM_CANUNDO",
1306   "EM_UNDO",
1307   "EM_FMTLINES",
1308   "EM_LINEFROMCHAR",
1309   "EM_UNKNOWN_CA",
1310   "EM_SETTABSTOPS",
1311   "EM_SETPASSWORDCHAR",
1312   "EM_EMPTYUNDOBUFFER",
1313   "EM_GETFIRSTVISIBLELINE",
1314   "EM_SETREADONLY",
1315   "EM_SETWORDBREAKPROC",
1316   "EM_GETWORDBREAKPROC",
1317   "EM_GETPASSWORDCHAR",
1318   "EM_SETMARGINS",
1319   "EM_GETMARGINS",
1320   "EM_GETLIMITTEXT",
1321   "EM_POSFROMCHAR",
1322   "EM_CHARFROMPOS"
1323 };
1324
1325 static const char * const richedit_messages[] = {
1326   "EM_CANPASTE",
1327   "EM_DISPLAYBAND",
1328   "EM_EXGETSEL",
1329   "EM_EXLIMITTEXT",
1330   "EM_EXLINEFROMCHAR",
1331   "EM_EXSETSEL",
1332   "EM_FINDTEXT",
1333   "EM_FORMATRANGE",
1334   "EM_GETCHARFORMAT",
1335   "EM_GETEVENTMASK",
1336   "EM_GETOLEINTERFACE",
1337   "EM_GETPARAFORMAT",
1338   "EM_GETSELTEXT",
1339   "EM_HIDESELECTION",
1340   "EM_PASTESPECIAL",
1341   "EM_REQUESTRESIZE",
1342   "EM_SELECTIONTYPE",
1343   "EM_SETBKGNDCOLOR",
1344   "EM_SETCHARFORMAT",
1345   "EM_SETEVENTMASK",
1346   "EM_SETOLECALLBACK",
1347   "EM_SETPARAFORMAT",
1348   "EM_SETTARGETDEVICE",
1349   "EM_STREAMIN",
1350   "EM_STREAMOUT",
1351   "EM_GETTEXTRANGE",
1352   "EM_FINDWORDBREAK",
1353   "EM_SETOPTIONS",
1354   "EM_GETOPTIONS",
1355   "EM_FINDTEXTEX",
1356   "EM_GETWORDBREAKPROCEX",
1357   "EM_SETWORDBREAKPROCEX",
1358   "EM_SETUNDOLIMIT",
1359   "EM_UNKNOWN_USER_83",
1360   "EM_REDO",
1361   "EM_CANREDO",
1362   "EM_GETUNDONAME",
1363   "EM_GETREDONAME",
1364   "EM_STOPGROUPTYPING",
1365   "EM_SETTEXTMODE",
1366   "EM_GETTEXTMODE",
1367   "EM_AUTOURLDETECT",
1368   "EM_GETAUTOURLDETECT",
1369   "EM_SETPALETTE",
1370   "EM_GETTEXTEX",
1371   "EM_GETTEXTLENGTHEX",
1372   "EM_SHOWSCROLLBAR",
1373   "EM_SETTEXTEX",
1374   "EM_UNKNOWN_USER_98",
1375   "EM_UNKNOWN_USER_99",
1376   "EM_SETPUNCTUATION",
1377   "EM_GETPUNCTUATION",
1378   "EM_SETWORDWRAPMODE",
1379   "EM_GETWORDWRAPMODE",
1380   "EM_SETIMECOLOR",
1381   "EM_GETIMECOLOR",
1382   "EM_SETIMEOPTIONS",
1383   "EM_GETIMEOPTIONS",
1384   "EM_CONVPOSITION",
1385   "EM_UNKNOWN_USER_109",
1386   "EM_UNKNOWN_USER_110",
1387   "EM_UNKNOWN_USER_111",
1388   "EM_UNKNOWN_USER_112",
1389   "EM_UNKNOWN_USER_113",
1390   "EM_UNKNOWN_USER_114",
1391   "EM_UNKNOWN_USER_115",
1392   "EM_UNKNOWN_USER_116",
1393   "EM_UNKNOWN_USER_117",
1394   "EM_UNKNOWN_USER_118",
1395   "EM_UNKNOWN_USER_119",
1396   "EM_SETLANGOPTIONS",
1397   "EM_GETLANGOPTIONS",
1398   "EM_GETIMECOMPMODE",
1399   "EM_FINDTEXTW",
1400   "EM_FINDTEXTEXW",
1401   "EM_RECONVERSION",
1402   "EM_SETIMEMODEBIAS",
1403   "EM_GETIMEMODEBIAS"
1404 };
1405
1406 static const char *
1407 get_msg_name(UINT msg)
1408 {
1409   if (msg >= EM_GETSEL && msg <= EM_CHARFROMPOS)
1410     return edit_messages[msg - EM_GETSEL];
1411   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1412     return richedit_messages[msg - EM_CANPASTE];
1413   return "";
1414 }
1415
1416 static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
1417                                       LPARAM lParam, BOOL unicode)
1418 {
1419   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongPtrW(hWnd, 0);
1420
1421   TRACE("hwnd %p msg %04x (%s) %lx %lx, unicode %d\n",
1422         hWnd, msg, get_msg_name(msg), wParam, lParam, unicode);
1423
1424   if (!editor && msg != WM_NCCREATE && msg != WM_NCDESTROY) {
1425     ERR("called with invalid hWnd %p - application bug?\n", hWnd);
1426     return 0;
1427   }
1428
1429   switch(msg) {
1430
1431   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1432   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1433   UNSUPPORTED_MSG(EM_FMTLINES)
1434   UNSUPPORTED_MSG(EM_FORMATRANGE)
1435   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1436   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1437   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1438   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1439   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1440   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1441   UNSUPPORTED_MSG(EM_GETREDONAME)
1442   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1443   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1444   UNSUPPORTED_MSG(EM_GETUNDONAME)
1445   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1446   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1447   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1448   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1449   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1450   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1451   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1452   UNSUPPORTED_MSG(EM_SETPALETTE)
1453   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1454   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1455   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1456   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1457   UNSUPPORTED_MSG(WM_STYLECHANGING)
1458   UNSUPPORTED_MSG(WM_STYLECHANGED)
1459 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1460
1461 /* Messages specific to Richedit controls */
1462
1463   case EM_STREAMIN:
1464    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1465   case EM_STREAMOUT:
1466    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1467   case WM_GETDLGCODE:
1468   {
1469     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1470     if(lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
1471     {
1472       int vk = (int)((LPMSG)lParam)->wParam;
1473       /* if style says we want return key */
1474       if((vk == VK_RETURN) && (GetWindowLongW(hWnd, GWL_STYLE) & ES_WANTRETURN))
1475       {
1476         code |= DLGC_WANTMESSAGE;
1477       }
1478       /* we always handle ctrl-tab */
1479       if((vk == VK_TAB) && (GetKeyState(VK_CONTROL) & 0x8000))
1480       {
1481         code |= DLGC_WANTMESSAGE;
1482       }
1483     }
1484     return code;
1485   }
1486   case WM_NCCREATE:
1487   {
1488     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1489     TRACE("WM_NCCREATE: style 0x%08x\n", pcs->style);
1490     editor = ME_MakeEditor(hWnd);
1491     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)editor);
1492     return TRUE;
1493   }
1494   case EM_EMPTYUNDOBUFFER:
1495     ME_EmptyUndoStack(editor);
1496     return 0;
1497   case EM_GETSEL:
1498   {
1499     /* Note: wParam/lParam can be NULL */
1500     UINT from, to;
1501     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1502     PUINT pto = lParam ? (PUINT)lParam : &to;
1503     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1504     if ((*pfrom|*pto) & 0xFFFF0000)
1505       return -1;
1506     return MAKELONG(*pfrom,*pto);
1507   }
1508   case EM_EXGETSEL:
1509   {
1510     CHARRANGE *pRange = (CHARRANGE *)lParam;
1511     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1512     TRACE("EM_EXGETSEL = (%d,%d)\n", pRange->cpMin, pRange->cpMax);
1513     return 0;
1514   }
1515   case EM_SETUNDOLIMIT:
1516   {
1517     if ((int)wParam < 0)
1518       editor->nUndoLimit = STACK_SIZE_DEFAULT;
1519     else
1520       editor->nUndoLimit = min(wParam, STACK_SIZE_MAX);
1521     /* Setting a max stack size keeps wine from getting killed
1522       for hogging memory. Windows allocates all this memory at once, so
1523       no program would realistically set a value above our maximum. */
1524     return editor->nUndoLimit;
1525   }
1526   case EM_CANUNDO:
1527     return editor->pUndoStack != NULL;
1528   case EM_CANREDO:
1529     return editor->pRedoStack != NULL;
1530   case WM_UNDO: /* FIXME: actually not the same */
1531   case EM_UNDO:
1532     ME_Undo(editor);
1533     return 0;
1534   case EM_REDO:
1535     ME_Redo(editor);
1536     return 0;
1537   case EM_GETOPTIONS:
1538   {
1539     /* these flags are equivalent to the ES_* counterparts */
1540     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1541                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1542     DWORD settings = GetWindowLongW(hWnd, GWL_STYLE) & mask;
1543
1544     return settings;
1545   }
1546   case EM_SETOPTIONS:
1547   {
1548     /* these flags are equivalent to ES_* counterparts
1549      * ECO_READONLY is already implemented in the code, only requires
1550      * setting the bit to work
1551      */
1552     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1553                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1554     DWORD raw = GetWindowLongW(hWnd, GWL_STYLE);
1555     DWORD settings = mask & raw;
1556
1557     switch(wParam)
1558     {
1559       case ECOOP_SET:
1560         settings = lParam;
1561         break;
1562       case ECOOP_OR:
1563         settings |= lParam;
1564         break;
1565       case ECOOP_AND:
1566         settings &= lParam;
1567         break;
1568       case ECOOP_XOR:
1569         settings ^= lParam;
1570     }
1571     SetWindowLongW(hWnd, GWL_STYLE, (raw & ~mask) | (settings & mask));
1572
1573     if (lParam & ECO_AUTOWORDSELECTION)
1574       FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
1575     if (lParam & ECO_SELECTIONBAR)
1576       FIXME("ECO_SELECTIONBAR not implemented yet!\n");
1577     if (lParam & ECO_VERTICAL)
1578       FIXME("ECO_VERTICAL not implemented yet!\n");
1579     if (lParam & ECO_AUTOHSCROLL)
1580       FIXME("ECO_AUTOHSCROLL not implemented yet!\n");
1581     if (lParam & ECO_AUTOVSCROLL)
1582       FIXME("ECO_AUTOVSCROLL not implemented yet!\n");
1583     if (lParam & ECO_NOHIDESEL)
1584       FIXME("ECO_NOHIDESEL not implemented yet!\n");
1585     if (lParam & ECO_WANTRETURN)
1586       FIXME("ECO_WANTRETURN not implemented yet!\n");
1587
1588     return settings;
1589   }
1590   case EM_SETSEL:
1591   {
1592     ME_InvalidateSelection(editor);
1593     ME_SetSelection(editor, wParam, lParam);
1594     ME_InvalidateSelection(editor);
1595     ME_SendSelChange(editor);
1596     return 0;
1597   }
1598   case EM_SETSCROLLPOS:
1599   {
1600     POINT *point = (POINT *)lParam;
1601     ME_ScrollAbs(editor, point->y);
1602     return 0;
1603   }
1604   case EM_AUTOURLDETECT:
1605   {
1606     if (wParam==1 || wParam ==0)
1607     {
1608         editor->AutoURLDetect_bEnable = (BOOL)wParam;
1609         return 0;
1610     }
1611     return E_INVALIDARG;
1612   }
1613   case EM_GETAUTOURLDETECT:
1614   {
1615     return editor->AutoURLDetect_bEnable;
1616   }
1617   case EM_EXSETSEL:
1618   {
1619     int end;
1620     CHARRANGE range = *(CHARRANGE *)lParam;
1621
1622     TRACE("EM_EXSETSEL (%d,%d)\n", range.cpMin, range.cpMax);
1623
1624     ME_InvalidateSelection(editor);
1625     end = ME_SetSelection(editor, range.cpMin, range.cpMax);
1626     ME_InvalidateSelection(editor);
1627     ME_SendSelChange(editor);
1628
1629     return end;
1630   }
1631   case EM_SHOWSCROLLBAR:
1632   {
1633     ShowScrollBar(editor->hWnd, wParam, lParam);
1634     return 0;
1635   }
1636   case EM_SETTEXTEX:
1637   {
1638     LPWSTR wszText;
1639     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1640     size_t len;
1641     int from, to;
1642     ME_Style *style;
1643     int oldModify = editor->nModifyStep;
1644
1645     if (!pStruct) return 0;
1646
1647     TRACE("EM_SETTEXTEX - %s, flags %d, cp %d\n",
1648           pStruct->codepage == 1200 ? debugstr_w((LPCWSTR)lParam) : debugstr_a((LPCSTR)lParam),
1649           pStruct->flags, pStruct->codepage);
1650
1651     /* FIXME: make use of pStruct->codepage in the to unicode translation */
1652     wszText = lParam ? ME_ToUnicode(pStruct->codepage == 1200, (void *)lParam) : NULL;
1653     len = wszText ? lstrlenW(wszText) : 0;
1654
1655     /* FIXME: this should support RTF strings too, according to MSDN */
1656     if (pStruct->flags & ST_SELECTION) {
1657       ME_GetSelection(editor, &from, &to);
1658       style = ME_GetSelectionInsertStyle(editor);
1659       ME_InternalDeleteText(editor, from, to - from);
1660       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1661       ME_ReleaseStyle(style);
1662     }
1663     else {
1664       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1665       ME_InsertTextFromCursor(editor, 0, wszText, len, editor->pBuffer->pDefaultStyle);
1666       len = 1;
1667     }
1668     ME_CommitUndo(editor);
1669     if (!(pStruct->flags & ST_KEEPUNDO))
1670     {
1671       editor->nModifyStep = oldModify;
1672       ME_EmptyUndoStack(editor);
1673     }
1674     ME_UpdateRepaint(editor);
1675     return len;
1676   }
1677   case EM_SETBKGNDCOLOR:
1678   {
1679     LRESULT lColor = ME_GetBackColor(editor);
1680     if (editor->rgbBackColor != -1)
1681       DeleteObject(editor->hbrBackground);
1682     if (wParam)
1683     {
1684       editor->rgbBackColor = -1;
1685       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1686     }
1687     else
1688     {
1689       editor->rgbBackColor = lParam;
1690       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1691     }
1692     if (editor->bRedraw)
1693     {
1694       InvalidateRect(hWnd, NULL, TRUE);
1695       UpdateWindow(hWnd);
1696     }
1697     return lColor;
1698   }
1699   case EM_GETMODIFY:
1700     return editor->nModifyStep == 0 ? 0 : 1;
1701   case EM_SETMODIFY:
1702   {
1703     if (wParam)
1704       editor->nModifyStep = 1;
1705     else
1706       editor->nModifyStep = 0;
1707
1708     return 0;
1709   }
1710   case EM_SETREADONLY:
1711   {
1712     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1713     if (wParam)
1714       nStyle |= ES_READONLY;
1715     else
1716       nStyle &= ~ES_READONLY;
1717     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1718     return 0;
1719   }
1720   case EM_SETEVENTMASK:
1721   {
1722     DWORD nOldMask = editor->nEventMask;
1723
1724     editor->nEventMask = lParam;
1725     return nOldMask;
1726   }
1727   case EM_GETEVENTMASK:
1728     return editor->nEventMask;
1729   case EM_SETCHARFORMAT:
1730   {
1731     CHARFORMAT2W buf, *p;
1732     BOOL bRepaint = TRUE;
1733     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1734     if (!wParam || (editor->mode & TM_PLAINTEXT))
1735       ME_SetDefaultCharFormat(editor, p);
1736     else if (wParam == (SCF_WORD | SCF_SELECTION))
1737       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1738     else if (wParam == SCF_ALL)
1739       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1740     else {
1741       int from, to;
1742       ME_GetSelection(editor, &from, &to);
1743       bRepaint = (from != to);
1744       ME_SetSelectionCharFormat(editor, p);
1745     }
1746     editor->nModifyStep = 1;
1747     ME_CommitUndo(editor);
1748     if (bRepaint)
1749       ME_RewrapRepaint(editor);
1750     return 0;
1751   }
1752   case EM_GETCHARFORMAT:
1753   {
1754     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1755     if (dst->cbSize != sizeof(CHARFORMATA) &&
1756         dst->cbSize != sizeof(CHARFORMATW) &&
1757         dst->cbSize != sizeof(CHARFORMAT2A) &&
1758         dst->cbSize != sizeof(CHARFORMAT2W))
1759       return 0;
1760     tmp.cbSize = sizeof(tmp);
1761     if (!wParam)
1762       ME_GetDefaultCharFormat(editor, &tmp);
1763     else
1764       ME_GetSelectionCharFormat(editor, &tmp);
1765     ME_CopyToCFAny(dst, &tmp);
1766     return tmp.dwMask;
1767   }
1768   case EM_SETPARAFORMAT:
1769     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1770     ME_RewrapRepaint(editor);
1771     ME_CommitUndo(editor);
1772     return 0;
1773   case EM_GETPARAFORMAT:
1774     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1775     return 0;
1776   case EM_GETFIRSTVISIBLELINE:
1777   {
1778     ME_DisplayItem *p = editor->pBuffer->pFirst;
1779     int y = ME_GetYScrollPos(editor);
1780     int ypara = 0;
1781     int count = 0;
1782     int ystart, yend;
1783     while(p) {
1784       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1785       if (p->type == diTextEnd)
1786         break;
1787       if (p->type == diParagraph) {
1788         ypara = p->member.para.nYPos;
1789         continue;
1790       }
1791       ystart = ypara + p->member.row.nYPos;
1792       yend = ystart + p->member.row.nHeight;
1793       if (y < yend) {
1794         break;
1795       }
1796       count++;
1797     }
1798     return count;
1799   }
1800   case EM_HIDESELECTION:
1801   {
1802      editor->bHideSelection = (wParam != 0);
1803      ME_InvalidateSelection(editor);
1804      return 0;
1805   }
1806   case EM_LINESCROLL:
1807   {
1808     ME_ScrollDown(editor, lParam * 8); /* FIXME follow the original */
1809     return TRUE; /* Should return false if a single line richedit control */
1810   }
1811   case WM_CLEAR:
1812   {
1813     int from, to;
1814     ME_GetSelection(editor, &from, &to);
1815     ME_InternalDeleteText(editor, from, to-from);
1816     ME_CommitUndo(editor);
1817     ME_UpdateRepaint(editor);
1818     return 0;
1819   }
1820   case EM_REPLACESEL:
1821   {
1822     int from, to;
1823     ME_Style *style;
1824     LPWSTR wszText = ME_ToUnicode(unicode, (void *)lParam);
1825     size_t len = lstrlenW(wszText);
1826     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1827
1828     ME_GetSelection(editor, &from, &to);
1829     style = ME_GetSelectionInsertStyle(editor);
1830     ME_InternalDeleteText(editor, from, to-from);
1831     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1832     ME_ReleaseStyle(style);
1833     /* drop temporary style if line end */
1834     /*
1835      * FIXME question: does abc\n mean: put abc,
1836      * clear temp style, put \n? (would require a change)
1837      */
1838     if (len>0 && wszText[len-1] == '\n')
1839       ME_ClearTempStyle(editor);
1840     ME_EndToUnicode(unicode, wszText);
1841     ME_CommitUndo(editor);
1842     if (!wParam)
1843       ME_EmptyUndoStack(editor);
1844     ME_UpdateRepaint(editor);
1845     return 0;
1846   }
1847   case EM_SCROLLCARET:
1848   {
1849     int top, bottom; /* row's edges relative to document top */
1850     int nPos;
1851     ME_DisplayItem *para, *row;
1852
1853     nPos = ME_GetYScrollPos(editor);
1854     row = ME_RowStart(editor->pCursors[0].pRun);
1855     para = ME_GetParagraph(row);
1856     top = para->member.para.nYPos + row->member.row.nYPos;
1857     bottom = top + row->member.row.nHeight;
1858
1859     if (top < nPos) /* caret above window */
1860       ME_ScrollAbs(editor,  top);
1861     else if (nPos + editor->sizeWindow.cy < bottom) /*below*/
1862       ME_ScrollAbs(editor, bottom - editor->sizeWindow.cy);
1863     return 0;
1864   }
1865   case WM_SETFONT:
1866   {
1867     LOGFONTW lf;
1868     CHARFORMAT2W fmt;
1869     HDC hDC;
1870     BOOL bRepaint = LOWORD(lParam);
1871
1872     if (!wParam)
1873       wParam = (WPARAM)GetStockObject(SYSTEM_FONT);
1874     GetObjectW((HGDIOBJ)wParam, sizeof(LOGFONTW), &lf);
1875     hDC = GetDC(hWnd);
1876     ME_CharFormatFromLogFont(hDC, &lf, &fmt);
1877     ReleaseDC(hWnd, hDC);
1878     ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), &fmt);
1879     ME_SetDefaultCharFormat(editor, &fmt);
1880
1881     ME_CommitUndo(editor);
1882     if (bRepaint)
1883       ME_RewrapRepaint(editor);
1884     return 0;
1885   }
1886   case WM_SETTEXT:
1887   {
1888     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1889     if (lParam)
1890     {
1891       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1892       if (!unicode && !strncmp((char *)lParam, "{\\rtf", 5))
1893       {
1894         /* Undocumented: WM_SETTEXT supports RTF text */
1895         ME_StreamInRTFString(editor, 0, (char *)lParam);
1896       }
1897       else
1898       {
1899         LPWSTR wszText = ME_ToUnicode(unicode, (void *)lParam);
1900         TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1901         if (lstrlenW(wszText) > 0)
1902         {
1903           /* uses default style! */
1904           ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1905         }
1906         ME_EndToUnicode(unicode, wszText);
1907       }
1908     }
1909     else
1910       TRACE("WM_SETTEXT - NULL\n");
1911     ME_CommitUndo(editor);
1912     ME_EmptyUndoStack(editor);
1913     ME_SetSelection(editor, 0, 0);
1914     ME_UpdateRepaint(editor);
1915     return 1;
1916   }
1917   case EM_CANPASTE:
1918   {
1919     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1920     if (IsClipboardFormatAvailable(nRTFFormat))
1921       return TRUE;
1922     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1923       return TRUE;
1924     return FALSE;
1925   }
1926   case WM_PASTE:
1927   {
1928     DWORD dwFormat = 0;
1929     EDITSTREAM es;
1930     ME_GlobalDestStruct gds;
1931     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1932     UINT cf = 0;
1933
1934     if (IsClipboardFormatAvailable(nRTFFormat))
1935       cf = nRTFFormat, dwFormat = SF_RTF;
1936     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1937       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1938     else
1939       return 0;
1940
1941     if (!OpenClipboard(hWnd))
1942       return 0;
1943     gds.hData = GetClipboardData(cf);
1944     gds.nLength = 0;
1945     es.dwCookie = (DWORD)&gds;
1946     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1947     ME_StreamIn(editor, dwFormat|SFF_SELECTION, &es);
1948
1949     CloseClipboard();
1950     return 0;
1951   }
1952   case WM_CUT:
1953   case WM_COPY:
1954   {
1955     LPDATAOBJECT dataObj = NULL;
1956     CHARRANGE range;
1957     HRESULT hr = S_OK;
1958
1959     if (editor->cPasswordMask)
1960       return 0; /* Copying or Cutting masked text isn't allowed */
1961
1962     ME_GetSelection(editor, (int*)&range.cpMin, (int*)&range.cpMax);
1963     if(editor->lpOleCallback)
1964         hr = IRichEditOleCallback_GetClipboardData(editor->lpOleCallback, &range, RECO_COPY, &dataObj);
1965     if(FAILED(hr) || !dataObj)
1966         hr = ME_GetDataObject(editor, &range, &dataObj);
1967     if(SUCCEEDED(hr)) {
1968         hr = OleSetClipboard(dataObj);
1969         IDataObject_Release(dataObj);
1970     }
1971     if (SUCCEEDED(hr) && msg == WM_CUT)
1972     {
1973       ME_InternalDeleteText(editor, range.cpMin, range.cpMax-range.cpMin);
1974       ME_CommitUndo(editor);
1975       ME_UpdateRepaint(editor);
1976     }
1977     return 0;
1978   }
1979   case WM_GETTEXTLENGTH:
1980     return ME_GetTextLength(editor);
1981   case EM_GETTEXTLENGTHEX:
1982     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1983   case WM_GETTEXT:
1984   {
1985     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1986     tr.chrg.cpMin = 0;
1987     tr.chrg.cpMax = wParam ? (wParam - 1) : 0;
1988     tr.lpstrText = (WCHAR *)lParam;
1989     return RichEditWndProc_common(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr, unicode);
1990   }
1991   case EM_GETTEXTEX:
1992   {
1993     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1994     int nStart, nCount;
1995
1996     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1997       FIXME("GETTEXTEX flags 0x%08x not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1998
1999     if (ex->flags & GT_SELECTION)
2000     {
2001       ME_GetSelection(editor, &nStart, &nCount);
2002       nCount -= nStart;
2003       nCount = min(nCount, ex->cb - 1);
2004     }
2005     else
2006     {
2007       nStart = 0;
2008       nCount = ex->cb - 1;
2009     }
2010     if (ex->codepage == 1200)
2011     {
2012       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
2013       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
2014     }
2015     else
2016     {
2017       /* potentially each char may be a CR, why calculate the exact value with O(N) when
2018         we can just take a bigger buffer? :) */
2019       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
2020       LPWSTR buffer = richedit_alloc((crlfmul*nCount + 1) * sizeof(WCHAR));
2021       DWORD buflen = ex->cb;
2022       LRESULT rc;
2023       DWORD flags = 0;
2024
2025       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
2026       rc = WideCharToMultiByte(ex->codepage, flags, buffer, -1, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
2027       if (rc) rc--; /* do not count 0 terminator */
2028
2029       richedit_free(buffer);
2030       return rc;
2031     }
2032   }
2033   case EM_GETSELTEXT:
2034   {
2035     int from, to;
2036     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
2037     ME_GetSelection(editor, &from, &to);
2038     tr.chrg.cpMin = from;
2039     tr.chrg.cpMax = to;
2040     tr.lpstrText = (WCHAR *)lParam;
2041     return RichEditWndProc_common(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr, unicode);
2042   }
2043   case EM_GETSCROLLPOS:
2044   {
2045       POINT *point = (POINT *)lParam;
2046       point->x = 0; /* FIXME side scrolling not implemented */
2047       point->y = ME_GetYScrollPos(editor);
2048       return 1;
2049   }
2050   case EM_GETTEXTRANGE:
2051   {
2052     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
2053     TRACE("EM_GETTEXTRANGE min=%d max=%d unicode=%d emul1.0=%d length=%d\n",
2054       rng->chrg.cpMin, rng->chrg.cpMax, unicode,
2055       editor->bEmulateVersion10, ME_GetTextLength(editor));
2056     if (unicode)
2057       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
2058     else
2059     {
2060       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
2061       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
2062       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
2063       /* FIXME this is a potential security hole (buffer overrun)
2064          if you know more about wchar->mbyte conversion please explain
2065       */
2066       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
2067       FREE_OBJ(p);
2068       return nChars;
2069     }
2070   }
2071   case EM_GETLINE:
2072   {
2073     ME_DisplayItem *run;
2074     const unsigned int nMaxChars = *(WORD *) lParam;
2075     unsigned int nEndChars, nCharsLeft = nMaxChars;
2076     char *dest = (char *) lParam;
2077     /* rich text editor 1.0 uses \r\n for line end, 2.0 uses just \r;
2078     we need to know how if we have the extra \n or not */
2079     int nLF = editor->bEmulateVersion10;
2080
2081     TRACE("EM_GETLINE: row=%d, nMaxChars=%d (%s)\n", (int) wParam, nMaxChars,
2082           unicode ? "Unicode" : "Ansi");
2083
2084     run = ME_FindRowWithNumber(editor, wParam);
2085     if (run == NULL)
2086       return 0;
2087
2088     while (nCharsLeft && (run = ME_FindItemFwd(run, diRunOrStartRow))
2089            && !(run->member.run.nFlags & MERF_ENDPARA))
2090     {
2091       unsigned int nCopy;
2092       ME_String *strText;
2093       if (run->type != diRun)
2094         break;
2095       strText = run->member.run.strText;
2096       nCopy = min(nCharsLeft, strText->nLen);
2097
2098       if (unicode)
2099         lstrcpynW((LPWSTR) dest, strText->szData, nCopy);
2100       else
2101         nCopy = WideCharToMultiByte(CP_ACP, 0, strText->szData, nCopy, dest,
2102                                     nCharsLeft, NULL, NULL);
2103       dest += nCopy * (unicode ? sizeof(WCHAR) : 1);
2104       nCharsLeft -= nCopy;
2105     }
2106
2107     /* append \r\0 (or \r\n\0 in 1.0), space allowing */
2108     nEndChars = min(nCharsLeft, 2 + nLF);
2109     nCharsLeft -= nEndChars;
2110     if (unicode)
2111     {
2112       const WCHAR src[] = {'\r', '\0'};
2113       const WCHAR src10[] = {'\r', '\n', '\0'};
2114       lstrcpynW((LPWSTR) dest, nLF ? src10 : src, nEndChars);
2115     }
2116     else
2117       lstrcpynA(dest, nLF ? "\r\n" : "\r", nEndChars);
2118
2119     TRACE("EM_GETLINE: got %u bytes\n", nMaxChars - nCharsLeft);
2120
2121     if (nEndChars == 2 + nLF)
2122       return nMaxChars - nCharsLeft - 1; /* don't count \0 */
2123     else
2124       return nMaxChars - nCharsLeft;
2125   }
2126   case EM_GETLINECOUNT:
2127   {
2128     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
2129     int nRows = 0;
2130
2131     while (item != editor->pBuffer->pLast)
2132     {
2133       assert(item->type == diParagraph);
2134       nRows += item->member.para.nRows;
2135       item = item->member.para.next_para;
2136     }
2137     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
2138     return max(1, nRows);
2139   }
2140   case EM_LINEFROMCHAR:
2141   {
2142     if (wParam == -1)
2143       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
2144     else
2145       return ME_RowNumberFromCharOfs(editor, wParam);
2146   }
2147   case EM_EXLINEFROMCHAR:
2148   {
2149     if (lParam == -1)
2150       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor,1));
2151     else
2152       return ME_RowNumberFromCharOfs(editor, lParam);
2153   }
2154   case EM_LINEINDEX:
2155   {
2156     ME_DisplayItem *item, *para;
2157     int nCharOfs;
2158
2159     if (wParam == -1)
2160       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
2161     else
2162       item = ME_FindRowWithNumber(editor, wParam);
2163     if (!item)
2164       return -1;
2165     para = ME_GetParagraph(item);
2166     item = ME_FindItemFwd(item, diRun);
2167     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
2168     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
2169     return nCharOfs;
2170   }
2171   case EM_LINELENGTH:
2172   {
2173     ME_DisplayItem *item, *item_end;
2174     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
2175
2176     if (wParam > ME_GetTextLength(editor))
2177       return 0;
2178     if (wParam == -1)
2179     {
2180       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
2181       return 0;
2182     }
2183     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
2184     item = ME_RowStart(item);
2185     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
2186     item_end = ME_FindItemFwd(item, diStartRowOrParagraphOrEnd);
2187     if (item_end->type == diStartRow)
2188       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
2189     else
2190       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
2191        - (editor->bEmulateVersion10?2:1);
2192     nChars = nNextLineOfs - nThisLineOfs;
2193     TRACE("EM_LINELENGTH(%ld)==%d\n",wParam, nChars);
2194     return nChars;
2195   }
2196   case EM_EXLIMITTEXT:
2197   {
2198     if ((int)lParam < 0)
2199      return 0;
2200     if (lParam == 0)
2201       editor->nTextLimit = 65536;
2202     else
2203       editor->nTextLimit = (int) lParam;
2204     return 0;
2205   }
2206   case EM_LIMITTEXT:
2207   {
2208     if (wParam == 0)
2209       editor->nTextLimit = 65536;
2210     else
2211       editor->nTextLimit = (int) wParam;
2212     return 0;
2213   }
2214   case EM_GETLIMITTEXT:
2215   {
2216     return editor->nTextLimit;
2217   }
2218   case EM_FINDTEXT:
2219   {
2220     FINDTEXTA *ft = (FINDTEXTA *)lParam;
2221     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
2222     WCHAR *tmp;
2223     LRESULT r;
2224
2225     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2226       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
2227     r = ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
2228     FREE_OBJ( tmp );
2229     return r;
2230   }
2231   case EM_FINDTEXTEX:
2232   {
2233     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
2234     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
2235     WCHAR *tmp;
2236     LRESULT r;
2237
2238     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2239       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
2240     r = ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
2241     FREE_OBJ( tmp );
2242     return r;
2243   }
2244   case EM_FINDTEXTW:
2245   {
2246     FINDTEXTW *ft = (FINDTEXTW *)lParam;
2247     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
2248   }
2249   case EM_FINDTEXTEXW:
2250   {
2251     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
2252     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
2253   }
2254   case EM_GETZOOM:
2255     if (!wParam || !lParam)
2256       return FALSE;
2257     *(int *)wParam = editor->nZoomNumerator;
2258     *(int *)lParam = editor->nZoomDenominator;
2259     return TRUE;
2260   case EM_SETZOOM:
2261     return ME_SetZoom(editor, wParam, lParam);
2262   case EM_CHARFROMPOS:
2263     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
2264   case EM_POSFROMCHAR:
2265   {
2266     ME_DisplayItem *pRun;
2267     int nCharOfs, nOffset, nLength;
2268     POINTL pt = {0,0};
2269
2270     nCharOfs = wParam;
2271     /* detect which API version we're dealing with */
2272     if (wParam >= 0x40000)
2273         nCharOfs = lParam;
2274     nLength = ME_GetTextLength(editor);
2275
2276     if (nCharOfs < nLength) {
2277         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
2278         assert(pRun->type == diRun);
2279         pt.y = pRun->member.run.pt.y;
2280         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
2281         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
2282     } else {
2283         pt.x = 0;
2284         pt.y = editor->pBuffer->pLast->member.para.nYPos;
2285     }
2286     if (wParam >= 0x40000) {
2287         *(POINTL *)wParam = pt;
2288     }
2289     return MAKELONG( pt.x, pt.y );
2290   }
2291   case WM_CREATE:
2292     if (GetWindowLongW(hWnd, GWL_STYLE) & WS_HSCROLL)
2293     { /* Squelch the default horizontal scrollbar it would make */
2294       ShowScrollBar(editor->hWnd, SB_HORZ, FALSE);
2295     }
2296     ME_CommitUndo(editor);
2297     ME_WrapMarkedParagraphs(editor);
2298     ME_MoveCaret(editor);
2299     return 0;
2300   case WM_DESTROY:
2301     ME_DestroyEditor(editor);
2302     SetWindowLongPtrW(hWnd, 0, 0);
2303     return 0;
2304   case WM_LBUTTONDOWN:
2305     SetFocus(hWnd);
2306     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2307     SetCapture(hWnd);
2308     ME_LinkNotify(editor,msg,wParam,lParam);
2309     break;
2310   case WM_MOUSEMOVE:
2311     if (GetCapture() == hWnd)
2312       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2313     ME_LinkNotify(editor,msg,wParam,lParam);
2314     break;
2315   case WM_LBUTTONUP:
2316     if (GetCapture() == hWnd)
2317       ReleaseCapture();
2318     ME_LinkNotify(editor,msg,wParam,lParam);
2319     break;
2320   case WM_LBUTTONDBLCLK:
2321     ME_LinkNotify(editor,msg,wParam,lParam);
2322     ME_SelectWord(editor);
2323     break;
2324   case WM_CONTEXTMENU:
2325     if (!ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam)))
2326       goto do_default;
2327     break;
2328   case WM_PAINT:
2329     if (editor->bRedraw)
2330     {
2331       HDC hDC;
2332       PAINTSTRUCT ps;
2333
2334       hDC = BeginPaint(hWnd, &ps);
2335       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
2336       EndPaint(hWnd, &ps);
2337     }
2338     break;
2339   case WM_SETFOCUS:
2340     editor->bHaveFocus = TRUE;
2341     ME_ShowCaret(editor);
2342     ME_SendOldNotify(editor, EN_SETFOCUS);
2343     return 0;
2344   case WM_KILLFOCUS:
2345     ME_HideCaret(editor);
2346     editor->bHaveFocus = FALSE;
2347     ME_SendOldNotify(editor, EN_KILLFOCUS);
2348     return 0;
2349   case WM_ERASEBKGND:
2350   {
2351     if (editor->bRedraw)
2352     {
2353       HDC hDC = (HDC)wParam;
2354       RECT rc;
2355       if (GetUpdateRect(hWnd,&rc,TRUE))
2356       {
2357         FillRect(hDC, &rc, editor->hbrBackground);
2358       }
2359     }
2360     return 1;
2361   }
2362   case WM_COMMAND:
2363     TRACE("editor wnd command = %d\n", LOWORD(wParam));
2364     return 0;
2365   case WM_KEYDOWN:
2366     if (ME_KeyDown(editor, LOWORD(wParam)))
2367       return 0;
2368     goto do_default;
2369   case WM_CHAR:
2370   {
2371     WCHAR wstr;
2372
2373     if (unicode)
2374         wstr = (WCHAR)wParam;
2375     else
2376     {
2377         CHAR charA = wParam;
2378         MultiByteToWideChar(CP_ACP, 0, &charA, 1, &wstr, 1);
2379     }
2380     if (editor->AutoURLDetect_bEnable)
2381       ME_AutoURLDetect(editor, wstr);
2382
2383     switch (wstr)
2384     {
2385     case 1: /* Ctrl-A */
2386       ME_SetSelection(editor, 0, -1);
2387       return 0;
2388     case 3: /* Ctrl-C */
2389       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
2390       return 0;
2391     }
2392
2393     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
2394       MessageBeep(MB_ICONERROR);
2395       return 0; /* FIXME really 0 ? */
2396     }
2397
2398     switch (wstr)
2399     {
2400     case 22: /* Ctrl-V */
2401       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
2402       return 0;
2403     case 24: /* Ctrl-X */
2404       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
2405       return 0;
2406     case 25: /* Ctrl-Y */
2407       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
2408       return 0;
2409     case 26: /* Ctrl-Z */
2410       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
2411       return 0;
2412     }
2413     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
2414       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
2415       ME_Style *style = ME_GetInsertStyle(editor, 0);
2416       ME_SaveTempStyle(editor);
2417       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
2418       ME_ReleaseStyle(style);
2419       ME_CommitUndo(editor);
2420       ME_UpdateRepaint(editor);
2421     }
2422     return 0;
2423   }
2424   case EM_SCROLL: /* fall through */
2425   case WM_VSCROLL:
2426   {
2427     int origNPos;
2428     int lineHeight;
2429
2430     origNPos = ME_GetYScrollPos(editor);
2431     lineHeight = 24;
2432
2433     if (editor && editor->pBuffer && editor->pBuffer->pDefaultStyle)
2434       lineHeight = editor->pBuffer->pDefaultStyle->tm.tmHeight;
2435     if (lineHeight <= 0) lineHeight = 24;
2436
2437     switch(LOWORD(wParam))
2438     {
2439       case SB_LINEUP:
2440         ME_ScrollUp(editor,lineHeight);
2441         break;
2442       case SB_LINEDOWN:
2443         ME_ScrollDown(editor,lineHeight);
2444         break;
2445       case SB_PAGEUP:
2446         ME_ScrollUp(editor,editor->sizeWindow.cy);
2447         break;
2448       case SB_PAGEDOWN:
2449         ME_ScrollDown(editor,editor->sizeWindow.cy);
2450         break;
2451       case SB_THUMBTRACK:
2452       case SB_THUMBPOSITION:
2453         ME_ScrollAbs(editor,HIWORD(wParam));
2454         break;
2455     }
2456     if (msg == EM_SCROLL)
2457       return 0x00010000 | (((ME_GetYScrollPos(editor) - origNPos)/lineHeight) & 0xffff);
2458     break;
2459   }
2460   case WM_MOUSEWHEEL:
2461   {
2462     int gcWheelDelta;
2463     UINT pulScrollLines;
2464
2465     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
2466     gcWheelDelta = -GET_WHEEL_DELTA_WPARAM(wParam);
2467
2468     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
2469     {
2470       /* FIXME follow the original */
2471       ME_ScrollDown(editor,pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8);
2472     }
2473     break;
2474   }
2475   case EM_GETRECT:
2476   {
2477     *((RECT *)lParam) = editor->rcFormat;
2478     return 0;
2479   }
2480   case EM_SETRECT:
2481   case EM_SETRECTNP:
2482   {
2483     if (lParam)
2484     {
2485       RECT *rc = (RECT *)lParam;
2486
2487       if (wParam)
2488       {
2489         editor->rcFormat.left += rc->left;
2490         editor->rcFormat.top += rc->top;
2491         editor->rcFormat.right += rc->right;
2492         editor->rcFormat.bottom += rc->bottom;
2493       }
2494       else
2495       {
2496         editor->rcFormat = *rc;
2497       }
2498     }
2499     else
2500     {
2501       GetClientRect(hWnd, &editor->rcFormat);
2502     }
2503     if (msg != EM_SETRECTNP)
2504       ME_RewrapRepaint(editor);
2505     return 0;
2506   }
2507   case EM_REQUESTRESIZE:
2508     ME_SendRequestResize(editor, TRUE);
2509     return 0;
2510   case WM_SETREDRAW:
2511     editor->bRedraw = wParam;
2512     return 0;
2513   case WM_SIZE:
2514   {
2515     GetClientRect(hWnd, &editor->rcFormat);
2516     ME_RewrapRepaint(editor);
2517     return DefWindowProcW(hWnd, msg, wParam, lParam);
2518   }
2519   /* IME messages to make richedit controls IME aware */
2520   case WM_IME_SETCONTEXT:
2521   case WM_IME_CONTROL:
2522   case WM_IME_SELECT:
2523   case WM_IME_COMPOSITIONFULL:
2524     return 0;
2525   case WM_IME_STARTCOMPOSITION:
2526   {
2527     editor->imeStartIndex=ME_GetCursorOfs(editor,0);
2528     ME_DeleteSelection(editor);
2529     ME_CommitUndo(editor);
2530     ME_UpdateRepaint(editor);
2531     return 0;
2532   }
2533   case WM_IME_COMPOSITION:
2534   {
2535     HIMC hIMC;
2536
2537     ME_Style *style = ME_GetInsertStyle(editor, 0);
2538     hIMC = ImmGetContext(hWnd);
2539     ME_DeleteSelection(editor);
2540     ME_CommitUndo(editor);
2541     ME_SaveTempStyle(editor);
2542     if (lParam & GCS_RESULTSTR)
2543     {
2544         LPWSTR lpCompStr = NULL;
2545         DWORD dwBufLen;
2546
2547         dwBufLen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
2548         lpCompStr = HeapAlloc(GetProcessHeap(),0,dwBufLen + sizeof(WCHAR));
2549         ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpCompStr, dwBufLen);
2550         lpCompStr[dwBufLen/sizeof(WCHAR)] = 0;
2551         ME_InsertTextFromCursor(editor,0,lpCompStr,dwBufLen/sizeof(WCHAR),style);
2552     }
2553     else if (lParam & GCS_COMPSTR)
2554     {
2555         LPWSTR lpCompStr = NULL;
2556         DWORD dwBufLen;
2557
2558         dwBufLen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
2559         lpCompStr = HeapAlloc(GetProcessHeap(),0,dwBufLen + sizeof(WCHAR));
2560         ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, dwBufLen);
2561         lpCompStr[dwBufLen/sizeof(WCHAR)] = 0;
2562
2563         ME_InsertTextFromCursor(editor,0,lpCompStr,dwBufLen/sizeof(WCHAR),style);
2564         ME_SetSelection(editor,editor->imeStartIndex,
2565                         editor->imeStartIndex + dwBufLen/sizeof(WCHAR));
2566     }
2567     ME_ReleaseStyle(style);
2568     ME_UpdateRepaint(editor);
2569     return 0;
2570   }
2571   case WM_IME_ENDCOMPOSITION:
2572   {
2573     ME_DeleteSelection(editor);
2574     editor->imeStartIndex=-1;
2575     return 0;
2576   }
2577   case EM_GETOLEINTERFACE:
2578   {
2579     LPVOID *ppvObj = (LPVOID*) lParam;
2580     return CreateIRichEditOle(editor, ppvObj);
2581   }
2582   case EM_GETPASSWORDCHAR:
2583   {
2584     return editor->cPasswordMask;
2585   }
2586   case EM_SETOLECALLBACK:
2587     if(editor->lpOleCallback)
2588       IUnknown_Release(editor->lpOleCallback);
2589     editor->lpOleCallback = (LPRICHEDITOLECALLBACK)lParam;
2590     if(editor->lpOleCallback)
2591       IUnknown_AddRef(editor->lpOleCallback);
2592     return TRUE;
2593   case EM_GETWORDBREAKPROC:
2594     return (LRESULT)editor->pfnWordBreak;
2595   case EM_SETWORDBREAKPROC:
2596   {
2597     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2598
2599     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2600     return (LRESULT)pfnOld;
2601   }
2602   case EM_SETTEXTMODE:
2603   {
2604     LRESULT ret;
2605     int mask = 0;
2606     int changes = 0;
2607     ret = RichEditWndProc_common(hWnd, WM_GETTEXTLENGTH, 0, 0, unicode);
2608     if (!ret)
2609     {
2610       /*Check for valid wParam*/
2611       if ((((wParam & TM_RICHTEXT) && ((wParam & TM_PLAINTEXT) << 1))) ||
2612           (((wParam & TM_MULTILEVELUNDO) && ((wParam & TM_SINGLELEVELUNDO) << 1))) ||
2613           (((wParam & TM_MULTICODEPAGE) && ((wParam & TM_SINGLECODEPAGE) << 1))))
2614         return 1;
2615       else
2616       {
2617         if (wParam & (TM_RICHTEXT | TM_PLAINTEXT))
2618         {
2619           mask |= (TM_RICHTEXT | TM_PLAINTEXT);
2620           changes |= (wParam & (TM_RICHTEXT | TM_PLAINTEXT));
2621         }
2622         /*FIXME: Currently no support for undo level and code page options*/
2623         editor->mode = (editor->mode & (~mask)) | changes;
2624         return 0;
2625       }
2626     }
2627     return ret;
2628   }
2629   case EM_SETPASSWORDCHAR:
2630   {
2631     editor->cPasswordMask = wParam;
2632     ME_RewrapRepaint(editor);
2633     return 0;
2634   }
2635   default:
2636   do_default:
2637     return DefWindowProcW(hWnd, msg, wParam, lParam);
2638   }
2639   return 0L;
2640 }
2641
2642 static LRESULT WINAPI RichEditWndProcW(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2643 {
2644     BOOL unicode = TRUE;
2645
2646     /* Under Win9x RichEdit20W returns ANSI strings, see the tests. */
2647     if (msg == WM_GETTEXT && (GetVersion() & 0x80000000))
2648         unicode = FALSE;
2649
2650     return RichEditWndProc_common(hWnd, msg, wParam, lParam, unicode);
2651 }
2652
2653 static LRESULT WINAPI RichEditWndProcA(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2654 {
2655     return RichEditWndProc_common(hWnd, msg, wParam, lParam, FALSE);
2656 }
2657
2658 /******************************************************************
2659  *        RichEditANSIWndProc (RICHED20.10)
2660  */
2661 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2662 {
2663     return RichEditWndProcA(hWnd, msg, wParam, lParam);
2664 }
2665
2666 /******************************************************************
2667  *        RichEdit10ANSIWndProc (RICHED20.9)
2668  */
2669 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2670 {
2671   LRESULT result;
2672
2673   /* FIXME: this is NOT the same as 2.0 version */
2674   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2675   if (msg == WM_NCCREATE)
2676   {
2677     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongPtrW(hWnd, 0);
2678
2679     editor->bEmulateVersion10 = TRUE;
2680     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2681   }
2682   return result;
2683 }
2684
2685 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2686 {
2687   HWND hWnd = editor->hWnd;
2688   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2689 }
2690
2691 void ME_LinkNotify(ME_TextEditor *editor, UINT msg, WPARAM wParam, LPARAM lParam)
2692 {
2693   int x,y;
2694   ME_Cursor tmpCursor;
2695   int nCharOfs; /* The start of the clicked text. Absolute character offset */
2696
2697   ME_Run *tmpRun;
2698
2699   ENLINK info;
2700   x = (short)LOWORD(lParam);
2701   y = (short)HIWORD(lParam);
2702   nCharOfs = ME_CharFromPos(editor, x, y);
2703   if (nCharOfs < 0) return;
2704
2705   ME_CursorFromCharOfs(editor, nCharOfs, &tmpCursor);
2706   tmpRun = &tmpCursor.pRun->member.run;
2707
2708   if ((tmpRun->style->fmt.dwMask & CFM_LINK)
2709     && (tmpRun->style->fmt.dwEffects & CFE_LINK))
2710   { /* The clicked run has CFE_LINK set */
2711     info.nmhdr.hwndFrom = editor->hWnd;
2712     info.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
2713     info.nmhdr.code = EN_LINK;
2714     info.msg = msg;
2715     info.wParam = wParam;
2716     info.lParam = lParam;
2717     info.chrg.cpMin = ME_CharOfsFromRunOfs(editor,tmpCursor.pRun,0);
2718     info.chrg.cpMax = info.chrg.cpMin + ME_StrVLen(tmpRun->strText);
2719     SendMessageW(GetParent(editor->hWnd), WM_NOTIFY,info.nmhdr.idFrom, (LPARAM)&info);
2720   }
2721 }
2722
2723 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2724 {
2725   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2726   int i = 0;
2727
2728   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2729     item = item->member.para.next_para;
2730   if (!item)
2731     return 0;
2732   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2733     item = item->member.para.next_para;
2734     i++;
2735   }
2736   return i;
2737 }
2738
2739
2740 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2741 {
2742   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2743   int nWritten = 0;
2744   WCHAR *pStart = buffer;
2745
2746   if (!item) {
2747     *buffer = 0;
2748     return 0;
2749   }
2750
2751   if (nStart)
2752   {
2753     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2754     if (nLen > nChars)
2755       nLen = nChars;
2756     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2757     nChars -= nLen;
2758     nWritten += nLen;
2759     if (!nChars)
2760       return nWritten;
2761     buffer += nLen;
2762     nStart = 0;
2763     item = ME_FindItemFwd(item, diRun);
2764   }
2765
2766   while(nChars && item)
2767   {
2768     int nLen = ME_StrLen(item->member.run.strText);
2769     if (nLen > nChars)
2770       nLen = nChars;
2771
2772     if (item->member.run.nFlags & MERF_ENDPARA)
2773     {
2774       if (!ME_FindItemFwd(item, diRun))
2775         /* No '\r' is appended to the last paragraph. */
2776         nLen = 0;
2777       else {
2778         *buffer = '\r';
2779         if (bCRLF)
2780         {
2781           *(++buffer) = '\n';
2782           nWritten++;
2783         }
2784         assert(nLen == 1);
2785         /* our end paragraph consists of 2 characters now */
2786         if (editor->bEmulateVersion10)
2787           nChars--;
2788       }
2789     }
2790     else
2791       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2792     nChars -= nLen;
2793     nWritten += nLen;
2794     buffer += nLen;
2795
2796     if (!nChars)
2797     {
2798       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2799       *buffer = 0;
2800       return nWritten;
2801     }
2802     item = ME_FindItemFwd(item, diRun);
2803   }
2804   *buffer = 0;
2805   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2806   return nWritten;
2807 }
2808
2809 static BOOL ME_RegisterEditorClass(HINSTANCE hInstance)
2810 {
2811   WNDCLASSW wcW;
2812   WNDCLASSA wcA;
2813
2814   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2815   wcW.lpfnWndProc = RichEditWndProcW;
2816   wcW.cbClsExtra = 0;
2817   wcW.cbWndExtra = sizeof(ME_TextEditor *);
2818   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2819   wcW.hIcon = NULL;
2820   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2821   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2822   wcW.lpszMenuName = NULL;
2823
2824   if (is_version_nt())
2825   {
2826     wcW.lpszClassName = RichEdit20W;
2827     if (!RegisterClassW(&wcW)) return FALSE;
2828     wcW.lpszClassName = RichEdit50W;
2829     if (!RegisterClassW(&wcW)) return FALSE;
2830   }
2831   else
2832   {
2833     /* WNDCLASSA/W have the same layout */
2834     wcW.lpszClassName = (LPCWSTR)"RichEdit20W";
2835     if (!RegisterClassA((WNDCLASSA *)&wcW)) return FALSE;
2836     wcW.lpszClassName = (LPCWSTR)"RichEdit50W";
2837     if (!RegisterClassA((WNDCLASSA *)&wcW)) return FALSE;
2838   }
2839
2840   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2841   wcA.lpfnWndProc = RichEditWndProcA;
2842   wcA.cbClsExtra = 0;
2843   wcA.cbWndExtra = sizeof(ME_TextEditor *);
2844   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2845   wcA.hIcon = NULL;
2846   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2847   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2848   wcA.lpszMenuName = NULL;
2849   wcA.lpszClassName = "RichEdit20A";
2850   if (!RegisterClassA(&wcA)) return FALSE;
2851   wcA.lpszClassName = "RichEdit50A";
2852   if (!RegisterClassA(&wcA)) return FALSE;
2853
2854   return TRUE;
2855 }
2856
2857 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2858   /* FIXME: Not implemented */
2859   TRACE("hWnd %p msg %04x (%s) %08lx %08lx\n",
2860         hWnd, msg, get_msg_name(msg), wParam, lParam);
2861   return DefWindowProcW(hWnd, msg, wParam, lParam);
2862 }
2863
2864 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2865   /* FIXME: Not implemented */
2866   TRACE("hWnd %p msg %04x (%s) %08lx %08lx\n",
2867         hWnd, msg, get_msg_name(msg), wParam, lParam);
2868   return DefWindowProcW(hWnd, msg, wParam, lParam);
2869 }
2870
2871 /******************************************************************
2872  *        REExtendedRegisterClass (RICHED20.8)
2873  *
2874  * FIXME undocumented
2875  * Need to check for errors and implement controls and callbacks
2876  */
2877 LRESULT WINAPI REExtendedRegisterClass(void)
2878 {
2879   WNDCLASSW wcW;
2880   UINT result;
2881
2882   FIXME("semi stub\n");
2883
2884   wcW.cbClsExtra = 0;
2885   wcW.cbWndExtra = 4;
2886   wcW.hInstance = NULL;
2887   wcW.hIcon = NULL;
2888   wcW.hCursor = NULL;
2889   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2890   wcW.lpszMenuName = NULL;
2891
2892   if (!ME_ListBoxRegistered)
2893   {
2894       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2895       wcW.lpfnWndProc = REListWndProc;
2896       wcW.lpszClassName = REListBox20W;
2897       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2898   }
2899
2900   if (!ME_ComboBoxRegistered)
2901   {
2902       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2903       wcW.lpfnWndProc = REComboWndProc;
2904       wcW.lpszClassName = REComboBox20W;
2905       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2906   }
2907
2908   result = 0;
2909   if (ME_ListBoxRegistered)
2910       result += 1;
2911   if (ME_ComboBoxRegistered)
2912       result += 2;
2913
2914   return result;
2915 }
2916
2917 int ME_AutoURLDetect(ME_TextEditor *editor, WCHAR curChar)
2918 {
2919   struct prefix_s {
2920     const char *text;
2921     int length;
2922   } prefixes[12] = {
2923     {"http:", 5},
2924     {"file:", 6},
2925     {"mailto:", 8},
2926     {"ftp:", 5},
2927     {"https:", 7},
2928     {"gopher:", 8},
2929     {"nntp:", 6},
2930     {"prospero:", 10},
2931     {"telnet:", 8},
2932     {"news:", 6},
2933     {"wais:", 6},
2934     {"www.", 5}
2935   };
2936   CHARRANGE ins_pt;
2937   int curf_ef, link_ef, def_ef;
2938   int cur_prefx, prefx_cnt;
2939   int sel_min, sel_max;
2940   int car_pos = 0;
2941   int text_pos=-1;
2942   int URLmin, URLmax = 0;
2943   CHARRANGE url;
2944   FINDTEXTA ft;
2945   CHARFORMAT2W cur_format;
2946   CHARFORMAT2W default_format;
2947   CHARFORMAT2W link;
2948   RichEditANSIWndProc(editor->hWnd, EM_EXGETSEL, (WPARAM) 0, (LPARAM) &ins_pt);
2949   sel_min = ins_pt.cpMin;
2950   sel_max = ins_pt.cpMax;
2951   if (sel_min==sel_max)
2952     car_pos = sel_min;
2953   if (sel_min!=sel_max)
2954     car_pos = ME_GetTextLength(editor)+1;
2955   cur_format.cbSize = sizeof(cur_format);
2956   default_format.cbSize = sizeof(default_format);
2957   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_SELECTION, (LPARAM) &cur_format);
2958   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_DEFAULT, (LPARAM) &default_format);
2959   link.cbSize = sizeof(link);
2960   link.dwMask = CFM_LINK;
2961   link.dwEffects = CFE_LINK;
2962   curf_ef = cur_format.dwEffects & link.dwEffects;
2963   def_ef = default_format.dwEffects & link.dwEffects;
2964   link_ef = link.dwEffects & link.dwEffects;
2965   if (curf_ef == link_ef)
2966   {
2967     if( curChar == '\n' || curChar=='\r' || curChar==' ')
2968     {
2969       ME_SetSelection(editor, car_pos, car_pos);
2970       RichEditANSIWndProc(editor->hWnd, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM) &default_format);
2971       text_pos=-1;
2972       return 0;
2973     }
2974   }
2975   if (curf_ef == def_ef)
2976   {
2977     cur_prefx = 0;
2978     prefx_cnt = (sizeof(prefixes)/sizeof(struct prefix_s))-1;
2979     while (cur_prefx<=prefx_cnt)
2980     {
2981       if (text_pos == -1)
2982       {
2983         ft.lpstrText = prefixes[cur_prefx].text;
2984         URLmin=max(0,(car_pos-prefixes[cur_prefx].length));
2985         URLmax=max(0, car_pos);
2986         if ((car_pos == 0) && (ME_GetTextLength(editor) != 0))
2987         {
2988         URLmax = ME_GetTextLength(editor)+1;
2989         }
2990         ft.chrg.cpMin = URLmin;
2991         ft.chrg.cpMax = URLmax;
2992         text_pos=RichEditANSIWndProc(editor->hWnd, EM_FINDTEXT, FR_DOWN, (LPARAM)&ft);
2993         cur_prefx++;
2994       }
2995       if (text_pos != -1)
2996       {
2997         url.cpMin=text_pos;
2998         url.cpMax=car_pos-1;
2999         ME_SetCharFormat(editor, text_pos, (URLmax-text_pos), &link);
3000         ME_RewrapRepaint(editor);
3001         break;
3002       }
3003     }
3004   }
3005   return 0;
3006 }