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