git.oblomov.eu Git - wine/blob - programs/winhlp32/winhelp.c

   1 /*
   2  * Help Viewer
   3  *
   4  * Copyright    1996 Ulrich Schmid <uschmid@mail.hh.provi.de>
   5  *              2002 Sylvain Petreolle <spetreolle@yahoo.fr>
   6  *              2002, 2008 Eric Pouech <eric.pouech@wanadoo.fr>
   7  *              2004 Ken Belleau <jamez@ivic.qc.ca>
   8  *              2008 Kirill K. Smirnov <lich@math.spbu.ru>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include <assert.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <stdlib.h>
  30
  31 #define NONAMELESSUNION
  32 #define NONAMELESSSTRUCT
  33
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "wingdi.h"
  37 #include "winuser.h"
  38 #include "commdlg.h"
  39 #include "winhelp.h"
  40 #include "winhelp_res.h"
  41 #include "shellapi.h"
  42 #include "richedit.h"
  43 #include "commctrl.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(winhelp);
  48
  49 WINHELP_GLOBALS Globals = {3, NULL, TRUE, NULL, NULL, NULL, NULL, NULL, {{{NULL,NULL}},0}, NULL};
  50
  51 #define CTL_ID_BUTTON   0x700
  52 #define CTL_ID_TEXT     0x701
  53
  54
  55 /***********************************************************************
  56  *
  57  *           WINHELP_InitFonts
  58  */
  59 static void WINHELP_InitFonts(HWND hWnd)
  60 {
  61     WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
  62     LOGFONT logfontlist[] = {
  63         {-10, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  64         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  65         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  66         {-12, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  67         {-12, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  68         {-10, 0, 0, 0, 700, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"},
  69         { -8, 0, 0, 0, 400, 0, 0, 0, DEFAULT_CHARSET, 0, 0, 0, 32, "Helv"}};
  70 #define FONTS_LEN (sizeof(logfontlist)/sizeof(*logfontlist))
  71
  72     static HFONT fonts[FONTS_LEN];
  73     static BOOL init = 0;
  74
  75     win->fonts_len = FONTS_LEN;
  76     win->fonts = fonts;
  77
  78     if (!init)
  79     {
  80         UINT i;
  81
  82         for (i = 0; i < FONTS_LEN; i++)
  83         {
  84             fonts[i] = CreateFontIndirect(&logfontlist[i]);
  85         }
  86
  87         init = 1;
  88     }
  89 }
  90
  91 static DWORD CALLBACK WINHELP_RtfStreamIn(DWORD_PTR cookie, BYTE* buff,
  92                                           LONG cb, LONG* pcb)
  93 {
  94     struct RtfData*     rd = (struct RtfData*)cookie;
  95
  96     if (rd->where >= rd->ptr) return 1;
  97     if (rd->where + cb > rd->ptr)
  98         cb = rd->ptr - rd->where;
  99     memcpy(buff, rd->where, cb);
 100     rd->where += cb;
 101     *pcb = cb;
 102     return 0;
 103 }
 104
 105 static void WINHELP_SetupText(HWND hTextWnd, WINHELP_WINDOW* win, ULONG relative)
 106 {
 107     /* At first clear area - needed by EM_POSFROMCHAR/EM_SETSCROLLPOS */
 108     SendMessage(hTextWnd, WM_SETTEXT, 0, (LPARAM)"");
 109     SendMessage(hTextWnd, WM_SETREDRAW, FALSE, 0);
 110     SendMessage(hTextWnd, EM_SETBKGNDCOLOR, 0, (LPARAM)win->info->sr_color);
 111     /* set word-wrap to window size (undocumented) */
 112     SendMessage(hTextWnd, EM_SETTARGETDEVICE, 0, 0);
 113     if (win->page)
 114     {
 115         struct RtfData  rd;
 116         EDITSTREAM      es;
 117         unsigned        cp = 0;
 118         POINTL          ptl;
 119         POINT           pt;
 120
 121
 122         if (HLPFILE_BrowsePage(win->page, &rd, win->font_scale, relative))
 123         {
 124             rd.where = rd.data;
 125             es.dwCookie = (DWORD_PTR)&rd;
 126             es.dwError = 0;
 127             es.pfnCallback = WINHELP_RtfStreamIn;
 128
 129             SendMessageW(hTextWnd, EM_STREAMIN, SF_RTF, (LPARAM)&es);
 130             cp = rd.char_pos_rel;
 131         }
 132         /* FIXME: else leaking potentially the rd.first_link chain */
 133         HeapFree(GetProcessHeap(), 0, rd.data);
 134         SendMessage(hTextWnd, EM_POSFROMCHAR, (WPARAM)&ptl, cp ? cp - 1 : 0);
 135         pt.x = 0; pt.y = ptl.y;
 136         SendMessage(hTextWnd, EM_SETSCROLLPOS, 0, (LPARAM)&pt);
 137     }
 138     SendMessage(hTextWnd, WM_SETREDRAW, TRUE, 0);
 139     RedrawWindow(hTextWnd, NULL, NULL, RDW_FRAME|RDW_INVALIDATE);
 140 }
 141
 142 /***********************************************************************
 143  *
 144  *           WINHELP_GetOpenFileName
 145  */
 146 BOOL WINHELP_GetOpenFileName(LPSTR lpszFile, int len)
 147 {
 148     OPENFILENAME openfilename;
 149     CHAR szDir[MAX_PATH];
 150     CHAR szzFilter[2 * MAX_STRING_LEN + 100];
 151     LPSTR p = szzFilter;
 152
 153     WINE_TRACE("()\n");
 154
 155     LoadString(Globals.hInstance, STID_HELP_FILES_HLP, p, MAX_STRING_LEN);
 156     p += strlen(p) + 1;
 157     lstrcpy(p, "*.hlp");
 158     p += strlen(p) + 1;
 159     LoadString(Globals.hInstance, STID_ALL_FILES, p, MAX_STRING_LEN);
 160     p += strlen(p) + 1;
 161     lstrcpy(p, "*.*");
 162     p += strlen(p) + 1;
 163     *p = '\0';
 164
 165     GetCurrentDirectory(sizeof(szDir), szDir);
 166
 167     lpszFile[0]='\0';
 168
 169     openfilename.lStructSize       = sizeof(OPENFILENAME);
 170     openfilename.hwndOwner         = (Globals.active_win ? Globals.active_win->hMainWnd : 0);
 171     openfilename.hInstance         = Globals.hInstance;
 172     openfilename.lpstrFilter       = szzFilter;
 173     openfilename.lpstrCustomFilter = 0;
 174     openfilename.nMaxCustFilter    = 0;
 175     openfilename.nFilterIndex      = 1;
 176     openfilename.lpstrFile         = lpszFile;
 177     openfilename.nMaxFile          = len;
 178     openfilename.lpstrFileTitle    = 0;
 179     openfilename.nMaxFileTitle     = 0;
 180     openfilename.lpstrInitialDir   = szDir;
 181     openfilename.lpstrTitle        = 0;
 182     openfilename.Flags             = OFN_ENABLESIZING;
 183     openfilename.nFileOffset       = 0;
 184     openfilename.nFileExtension    = 0;
 185     openfilename.lpstrDefExt       = 0;
 186     openfilename.lCustData         = 0;
 187     openfilename.lpfnHook          = 0;
 188     openfilename.lpTemplateName    = 0;
 189
 190     return GetOpenFileName(&openfilename);
 191 }
 192
 193 /***********************************************************************
 194  *
 195  *           WINHELP_MessageBoxIDS_s
 196  */
 197 static INT WINHELP_MessageBoxIDS_s(UINT ids_text, LPCSTR str, UINT ids_title, WORD type)
 198 {
 199     CHAR text[MAX_STRING_LEN];
 200     CHAR newtext[MAX_STRING_LEN + MAX_PATH];
 201
 202     LoadString(Globals.hInstance, ids_text, text, sizeof(text));
 203     wsprintf(newtext, text, str);
 204
 205     return MessageBox(0, newtext, MAKEINTRESOURCE(ids_title), type);
 206 }
 207
 208 /***********************************************************************
 209  *
 210  *           WINHELP_LookupHelpFile
 211  */
 212 HLPFILE* WINHELP_LookupHelpFile(LPCSTR lpszFile)
 213 {
 214     HLPFILE*        hlpfile;
 215     char szFullName[MAX_PATH];
 216     char szAddPath[MAX_PATH];
 217     char *p;
 218
 219     /*
 220      * NOTE: This is needed by popup windows only.
 221      * In other cases it's not needed but does not hurt though.
 222      */
 223     if (Globals.active_win && Globals.active_win->page && Globals.active_win->page->file)
 224     {
 225         strcpy(szAddPath, Globals.active_win->page->file->lpszPath);
 226         p = strrchr(szAddPath, '\\');
 227         if (p) *p = 0;
 228     }
 229
 230     /*
 231      * FIXME: Should we swap conditions?
 232      */
 233     if (!SearchPath(NULL, lpszFile, ".hlp", MAX_PATH, szFullName, NULL) &&
 234         !SearchPath(szAddPath, lpszFile, ".hlp", MAX_PATH, szFullName, NULL))
 235     {
 236         if (WINHELP_MessageBoxIDS_s(STID_FILE_NOT_FOUND_s, lpszFile, STID_WHERROR,
 237                                     MB_YESNO|MB_ICONQUESTION) != IDYES)
 238             return NULL;
 239         if (!WINHELP_GetOpenFileName(szFullName, MAX_PATH))
 240             return NULL;
 241     }
 242     hlpfile = HLPFILE_ReadHlpFile(szFullName);
 243     if (!hlpfile)
 244         WINHELP_MessageBoxIDS_s(STID_HLPFILE_ERROR_s, lpszFile,
 245                                 STID_WHERROR, MB_OK|MB_ICONSTOP);
 246     return hlpfile;
 247 }
 248
 249 /******************************************************************
 250  *              WINHELP_GetWindowInfo
 251  *
 252  *
 253  */
 254 HLPFILE_WINDOWINFO*     WINHELP_GetWindowInfo(HLPFILE* hlpfile, LPCSTR name)
 255 {
 256     static      HLPFILE_WINDOWINFO      mwi;
 257     unsigned int     i;
 258
 259     if (!name || !name[0])
 260         name = Globals.active_win->info->name;
 261
 262     if (hlpfile)
 263         for (i = 0; i < hlpfile->numWindows; i++)
 264             if (!lstrcmpi(hlpfile->windows[i].name, name))
 265                 return &hlpfile->windows[i];
 266
 267     if (strcmp(name, "main") != 0)
 268     {
 269         WINE_FIXME("Couldn't find window info for %s\n", name);
 270         assert(0);
 271         return NULL;
 272     }
 273     if (!mwi.name[0])
 274     {
 275         strcpy(mwi.type, "primary");
 276         strcpy(mwi.name, "main");
 277         if (hlpfile && hlpfile->lpszTitle[0])
 278         {
 279             char        tmp[128];
 280             LoadString(Globals.hInstance, STID_WINE_HELP, tmp, sizeof(tmp));
 281             snprintf(mwi.caption, sizeof(mwi.caption), "%s %s - %s",
 282                      hlpfile->lpszTitle, tmp, hlpfile->lpszPath);
 283         }
 284         else
 285             LoadString(Globals.hInstance, STID_WINE_HELP, mwi.caption, sizeof(mwi.caption));
 286         mwi.origin.x = mwi.origin.y = mwi.size.cx = mwi.size.cy = CW_USEDEFAULT;
 287         mwi.style = SW_SHOW;
 288         mwi.win_style = WS_OVERLAPPEDWINDOW;
 289         mwi.sr_color = mwi.nsr_color = 0xFFFFFF;
 290     }
 291     return &mwi;
 292 }
 293
 294 /******************************************************************
 295  *              HLPFILE_GetPopupWindowInfo
 296  *
 297  *
 298  */
 299 static HLPFILE_WINDOWINFO*     WINHELP_GetPopupWindowInfo(HLPFILE* hlpfile,
 300                                                           WINHELP_WINDOW* parent, LPARAM mouse)
 301 {
 302     static      HLPFILE_WINDOWINFO      wi;
 303
 304     RECT parent_rect;
 305
 306     wi.type[0] = wi.name[0] = wi.caption[0] = '\0';
 307
 308     /* Calculate horizontal size and position of a popup window */
 309     GetWindowRect(parent->hMainWnd, &parent_rect);
 310     wi.size.cx = (parent_rect.right  - parent_rect.left) / 2;
 311     wi.size.cy = 10; /* need a non null value, so that border are taken into account while computing */
 312
 313     wi.origin.x = (short)LOWORD(mouse);
 314     wi.origin.y = (short)HIWORD(mouse);
 315     ClientToScreen(parent->hMainWnd, &wi.origin);
 316     wi.origin.x -= wi.size.cx / 2;
 317     wi.origin.x  = min(wi.origin.x, GetSystemMetrics(SM_CXSCREEN) - wi.size.cx);
 318     wi.origin.x  = max(wi.origin.x, 0);
 319
 320     wi.style = SW_SHOW;
 321     wi.win_style = WS_POPUP | WS_BORDER;
 322     if (parent->page->file->has_popup_color)
 323         wi.sr_color = parent->page->file->popup_color;
 324     else
 325         wi.sr_color = parent->info->sr_color;
 326     wi.nsr_color = 0xFFFFFF;
 327
 328     return &wi;
 329 }
 330
 331 typedef struct
 332 {
 333     WORD size;
 334     WORD command;
 335     LONG data;
 336     LONG reserved;
 337     WORD ofsFilename;
 338     WORD ofsData;
 339 } WINHELP,*LPWINHELP;
 340
 341 static BOOL WINHELP_HasWorkingWindow(void)
 342 {
 343     if (!Globals.active_win) return FALSE;
 344     if (Globals.active_win->next || Globals.win_list != Globals.active_win) return TRUE;
 345     return Globals.active_win->page != NULL && Globals.active_win->page->file != NULL;
 346 }
 347
 348 /******************************************************************
 349  *              WINHELP_HandleCommand
 350  *
 351  *
 352  */
 353 static LRESULT  WINHELP_HandleCommand(HWND hSrcWnd, LPARAM lParam)
 354 {
 355     COPYDATASTRUCT*     cds = (COPYDATASTRUCT*)lParam;
 356     WINHELP*            wh;
 357
 358     if (cds->dwData != 0xA1DE505)
 359     {
 360         WINE_FIXME("Wrong magic number (%08lx)\n", cds->dwData);
 361         return 0;
 362     }
 363
 364     wh = cds->lpData;
 365
 366     if (wh)
 367     {
 368         char*   ptr = (wh->ofsFilename) ? (LPSTR)wh + wh->ofsFilename : NULL;
 369
 370         WINE_TRACE("Got[%u]: cmd=%u data=%08x fn=%s\n",
 371                    wh->size, wh->command, wh->data, ptr);
 372         switch (wh->command)
 373         {
 374         case HELP_CONTEXT:
 375             if (ptr)
 376             {
 377                 MACRO_JumpContext(ptr, "main", wh->data);
 378             }
 379             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 380             break;
 381         case HELP_QUIT:
 382             MACRO_Exit();
 383             break;
 384         case HELP_CONTENTS:
 385             if (ptr)
 386             {
 387                 MACRO_JumpContents(ptr, "main");
 388             }
 389             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 390             break;
 391         case HELP_HELPONHELP:
 392             MACRO_HelpOn();
 393             if (!WINHELP_HasWorkingWindow()) MACRO_Exit();
 394             break;
 395         /* case HELP_SETINDEX: */
 396         case HELP_SETCONTENTS:
 397             if (ptr)
 398             {
 399                 MACRO_SetContents(ptr, wh->data);
 400             }
 401             break;
 402         case HELP_CONTEXTPOPUP:
 403             if (ptr)
 404             {
 405                 MACRO_PopupContext(ptr, wh->data);
 406             }
 407             break;
 408         /* case HELP_FORCEFILE:*/
 409         /* case HELP_CONTEXTMENU: */
 410         case HELP_FINDER:
 411             /* in fact, should be the topic dialog box */
 412             WINE_FIXME("HELP_FINDER: stub\n");
 413             if (ptr)
 414             {
 415                 MACRO_JumpHash(ptr, "main", 0);
 416             }
 417             break;
 418         /* case HELP_WM_HELP: */
 419         /* case HELP_SETPOPUP_POS: */
 420         /* case HELP_KEY: */
 421         /* case HELP_COMMAND: */
 422         /* case HELP_PARTIALKEY: */
 423         /* case HELP_MULTIKEY: */
 424         /* case HELP_SETWINPOS: */
 425         default:
 426             WINE_FIXME("Unhandled command (%x) for remote winhelp control\n", wh->command);
 427             break;
 428         }
 429     }
 430     /* Always return success for now */
 431     return 1;
 432 }
 433
 434 void            WINHELP_LayoutMainWindow(WINHELP_WINDOW* win)
 435 {
 436     RECT        rect, button_box_rect;
 437     INT         text_top = 0;
 438     HWND        hButtonBoxWnd = GetDlgItem(win->hMainWnd, CTL_ID_BUTTON);
 439     HWND        hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 440
 441     GetClientRect(win->hMainWnd, &rect);
 442
 443     /* Update button box and text Window */
 444     SetWindowPos(hButtonBoxWnd, HWND_TOP,
 445                  rect.left, rect.top,
 446                  rect.right - rect.left,
 447                  rect.bottom - rect.top, 0);
 448
 449     if (GetWindowRect(hButtonBoxWnd, &button_box_rect))
 450         text_top = rect.top + button_box_rect.bottom - button_box_rect.top;
 451
 452     SetWindowPos(hTextWnd, HWND_TOP,
 453                  rect.left, text_top,
 454                  rect.right - rect.left,
 455                  rect.bottom - text_top, 0);
 456
 457 }
 458
 459 /******************************************************************
 460  *              WINHELP_DeleteButtons
 461  *
 462  */
 463 static void WINHELP_DeleteButtons(WINHELP_WINDOW* win)
 464 {
 465     WINHELP_BUTTON*     b;
 466     WINHELP_BUTTON*     bp;
 467
 468     for (b = win->first_button; b; b = bp)
 469     {
 470         DestroyWindow(b->hWnd);
 471         bp = b->next;
 472         HeapFree(GetProcessHeap(), 0, b);
 473     }
 474     win->first_button = NULL;
 475 }
 476
 477 /******************************************************************
 478  *              WINHELP_DeleteBackSet
 479  *
 480  */
 481 void WINHELP_DeleteBackSet(WINHELP_WINDOW* win)
 482 {
 483     unsigned int i;
 484
 485     for (i = 0; i < win->back.index; i++)
 486     {
 487         HLPFILE_FreeHlpFile(win->back.set[i].page->file);
 488         win->back.set[i].page = NULL;
 489     }
 490     win->back.index = 0;
 491 }
 492
 493 /******************************************************************
 494  *             WINHELP_DeletePageLinks
 495  *
 496  */
 497 static void WINHELP_DeletePageLinks(HLPFILE_PAGE* page)
 498 {
 499     HLPFILE_LINK*       curr;
 500     HLPFILE_LINK*       next;
 501
 502     for (curr = page->first_link; curr; curr = next)
 503     {
 504         next = curr->next;
 505         HeapFree(GetProcessHeap(), 0, curr);
 506     }
 507 }
 508
 509 /***********************************************************************
 510  *
 511  *           WINHELP_GrabWindow
 512  */
 513 WINHELP_WINDOW* WINHELP_GrabWindow(WINHELP_WINDOW* win)
 514 {
 515     WINE_TRACE("Grab %p#%d++\n", win, win->ref_count);
 516     win->ref_count++;
 517     return win;
 518 }
 519
 520 /***********************************************************************
 521  *
 522  *           WINHELP_RelaseWindow
 523  */
 524 BOOL WINHELP_ReleaseWindow(WINHELP_WINDOW* win)
 525 {
 526     WINE_TRACE("Release %p#%d--\n", win, win->ref_count);
 527
 528     if (!--win->ref_count)
 529     {
 530         DestroyWindow(win->hMainWnd);
 531         return FALSE;
 532     }
 533     return TRUE;
 534 }
 535
 536 /***********************************************************************
 537  *
 538  *           WINHELP_DeleteWindow
 539  */
 540 static void WINHELP_DeleteWindow(WINHELP_WINDOW* win)
 541 {
 542     WINHELP_WINDOW**    w;
 543     BOOL bExit;
 544     HWND hTextWnd;
 545
 546     for (w = &Globals.win_list; *w; w = &(*w)->next)
 547     {
 548         if (*w == win)
 549         {
 550             *w = win->next;
 551             break;
 552         }
 553     }
 554     bExit = (Globals.wVersion >= 4 && !lstrcmpi(win->info->name, "main"));
 555
 556     if (Globals.active_win == win)
 557     {
 558         Globals.active_win = Globals.win_list;
 559         if (Globals.win_list)
 560             SetActiveWindow(Globals.win_list->hMainWnd);
 561     }
 562
 563     if (win == Globals.active_popup)
 564         Globals.active_popup = NULL;
 565
 566     hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 567     SetWindowLongPtr(hTextWnd, GWLP_WNDPROC,
 568                      (LONG_PTR)win->origRicheditWndProc);
 569
 570     WINHELP_DeleteButtons(win);
 571
 572     if (win->page) WINHELP_DeletePageLinks(win->page);
 573     if (win->hHistoryWnd) DestroyWindow(win->hHistoryWnd);
 574
 575     DeleteObject(win->hBrush);
 576
 577     WINHELP_DeleteBackSet(win);
 578
 579     if (win->page) HLPFILE_FreeHlpFile(win->page->file);
 580     HeapFree(GetProcessHeap(), 0, win);
 581
 582     if (bExit) MACRO_Exit();
 583     if (!Globals.win_list)
 584         PostQuitMessage(0);
 585 }
 586
 587 static char* WINHELP_GetCaption(WINHELP_WNDPAGE* wpage)
 588 {
 589     if (wpage->wininfo->caption[0]) return wpage->wininfo->caption;
 590     return wpage->page->file->lpszTitle;
 591 }
 592
 593 static void WINHELP_RememberPage(WINHELP_WINDOW* win, WINHELP_WNDPAGE* wpage)
 594 {
 595     unsigned        num;
 596
 597     if (!Globals.history.index || Globals.history.set[0].page != wpage->page)
 598     {
 599         num = sizeof(Globals.history.set) / sizeof(Globals.history.set[0]);
 600         /* we're full, remove latest entry */
 601         if (Globals.history.index == num)
 602         {
 603             HLPFILE_FreeHlpFile(Globals.history.set[num - 1].page->file);
 604             Globals.history.index--;
 605         }
 606         memmove(&Globals.history.set[1], &Globals.history.set[0],
 607                 Globals.history.index * sizeof(Globals.history.set[0]));
 608         Globals.history.set[0] = *wpage;
 609         Globals.history.index++;
 610         wpage->page->file->wRefCount++;
 611     }
 612     if (win->hHistoryWnd) InvalidateRect(win->hHistoryWnd, NULL, TRUE);
 613
 614     num = sizeof(win->back.set) / sizeof(win->back.set[0]);
 615     if (win->back.index == num)
 616     {
 617         /* we're full, remove latest entry */
 618         HLPFILE_FreeHlpFile(win->back.set[0].page->file);
 619         memmove(&win->back.set[0], &win->back.set[1],
 620                 (num - 1) * sizeof(win->back.set[0]));
 621         win->back.index--;
 622     }
 623     win->back.set[win->back.index++] = *wpage;
 624     wpage->page->file->wRefCount++;
 625 }
 626
 627 /***********************************************************************
 628  *
 629  *           WINHELP_FindLink
 630  */
 631 static HLPFILE_LINK* WINHELP_FindLink(WINHELP_WINDOW* win, LPARAM pos)
 632 {
 633     HLPFILE_LINK*           link;
 634     POINTL                  mouse_ptl, char_ptl, char_next_ptl;
 635     DWORD                   cp;
 636
 637     if (!win->page) return NULL;
 638
 639     mouse_ptl.x = (short)LOWORD(pos);
 640     mouse_ptl.y = (short)HIWORD(pos);
 641     cp = SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_CHARFROMPOS,
 642                       0, (LPARAM)&mouse_ptl);
 643
 644     for (link = win->page->first_link; link; link = link->next)
 645     {
 646         if (link->cpMin <= cp && cp <= link->cpMax)
 647         {
 648             /* check whether we're at end of line */
 649             SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_POSFROMCHAR,
 650                          (LPARAM)&char_ptl, cp);
 651             SendMessageW(GetDlgItem(win->hMainWnd, CTL_ID_TEXT), EM_POSFROMCHAR,
 652                          (LPARAM)&char_next_ptl, cp + 1);
 653             if (link->bHotSpot)
 654             {
 655                 HLPFILE_HOTSPOTLINK*    hslink = (HLPFILE_HOTSPOTLINK*)link;
 656                 if ((mouse_ptl.x < char_ptl.x + hslink->x) ||
 657                     (mouse_ptl.x >= char_ptl.x + hslink->x + hslink->width) ||
 658                     (mouse_ptl.y < char_ptl.y + hslink->y) ||
 659                     (mouse_ptl.y >= char_ptl.y + hslink->y + hslink->height))
 660                     continue;
 661                 break;
 662             }
 663             if (char_next_ptl.y != char_ptl.y || mouse_ptl.x >= char_next_ptl.x)
 664                 link = NULL;
 665             break;
 666         }
 667     }
 668     return link;
 669 }
 670
 671 static LRESULT CALLBACK WINHELP_RicheditWndProc(HWND hWnd, UINT msg,
 672                                                 WPARAM wParam, LPARAM lParam)
 673 {
 674     WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLongPtr(GetParent(hWnd), 0);
 675     DWORD messagePos;
 676     POINT pt;
 677     switch(msg)
 678     {
 679         case WM_SETCURSOR:
 680             messagePos = GetMessagePos();
 681             pt.x = (short)LOWORD(messagePos);
 682             pt.y = (short)HIWORD(messagePos);
 683             ScreenToClient(hWnd, &pt);
 684             if (win->page && WINHELP_FindLink(win, MAKELPARAM(pt.x, pt.y)))
 685             {
 686                 SetCursor(win->hHandCur);
 687                 return 0;
 688             }
 689             /* fall through */
 690         default:
 691             return CallWindowProcA(win->origRicheditWndProc, hWnd, msg, wParam, lParam);
 692     }
 693 }
 694
 695 /***********************************************************************
 696  *
 697  *           WINHELP_CreateHelpWindow
 698  */
 699 BOOL WINHELP_CreateHelpWindow(WINHELP_WNDPAGE* wpage, int nCmdShow, BOOL remember)
 700 {
 701     WINHELP_WINDOW*     win = NULL;
 702     BOOL                bPrimary, bPopup, bReUsed = FALSE;
 703     HICON               hIcon;
 704     HWND                hTextWnd = NULL;
 705
 706     bPrimary = !lstrcmpi(wpage->wininfo->name, "main");
 707     bPopup = !bPrimary && (wpage->wininfo->win_style & WS_POPUP);
 708
 709     if (!bPopup)
 710     {
 711         for (win = Globals.win_list; win; win = win->next)
 712         {
 713             if (!lstrcmpi(win->info->name, wpage->wininfo->name))
 714             {
 715                 POINT   pt = {0, 0};
 716                 SIZE    sz = {0, 0};
 717                 DWORD   flags = SWP_NOSIZE | SWP_NOMOVE;
 718
 719                 if (win->page == wpage->page && win->info == wpage->wininfo)
 720                 {
 721                     /* see #22979, some hlp files have a macro (run at page opening), which
 722                      * jumps to the very same page
 723                      * Exit gracefully in that case
 724                      */
 725                     return TRUE;
 726                 }
 727                 WINHELP_DeleteButtons(win);
 728                 bReUsed = TRUE;
 729                 SetWindowText(win->hMainWnd, WINHELP_GetCaption(wpage));
 730                 if (wpage->wininfo->origin.x != CW_USEDEFAULT &&
 731                     wpage->wininfo->origin.y != CW_USEDEFAULT)
 732                 {
 733                     pt = wpage->wininfo->origin;
 734                     flags &= ~SWP_NOSIZE;
 735                 }
 736                 if (wpage->wininfo->size.cx != CW_USEDEFAULT &&
 737                     wpage->wininfo->size.cy != CW_USEDEFAULT)
 738                 {
 739                     sz = wpage->wininfo->size;
 740                     flags &= ~SWP_NOMOVE;
 741                 }
 742                 SetWindowPos(win->hMainWnd, HWND_TOP, pt.x, pt.y, sz.cx, sz.cy, flags);
 743
 744                 if (wpage->page && win->page && wpage->page->file != win->page->file)
 745                     WINHELP_DeleteBackSet(win);
 746                 WINHELP_InitFonts(win->hMainWnd);
 747
 748                 win->page = wpage->page;
 749                 win->info = wpage->wininfo;
 750                 hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
 751                 WINHELP_SetupText(hTextWnd, win, wpage->relative);
 752
 753                 InvalidateRect(win->hMainWnd, NULL, TRUE);
 754                 if (win->hHistoryWnd) InvalidateRect(win->hHistoryWnd, NULL, TRUE);
 755
 756                 break;
 757             }
 758         }
 759     }
 760
 761     if (!win)
 762     {
 763         /* Initialize WINHELP_WINDOW struct */
 764         win = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINHELP_WINDOW));
 765         if (!win) return FALSE;
 766         win->next = Globals.win_list;
 767         Globals.win_list = win;
 768
 769         win->hHandCur = LoadCursorW(0, (LPWSTR)IDC_HAND);
 770         win->back.index = 0;
 771         win->font_scale = 1;
 772         WINHELP_GrabWindow(win);
 773     }
 774     win->page = wpage->page;
 775     win->info = wpage->wininfo;
 776     WINHELP_GrabWindow(win);
 777
 778     if (!bPopup && wpage->page && remember)
 779     {
 780         WINHELP_RememberPage(win, wpage);
 781     }
 782
 783     if (bPopup)
 784         Globals.active_popup = win;
 785     else
 786         Globals.active_win = win;
 787
 788     /* Initialize default pushbuttons */
 789     if (bPrimary && wpage->page)
 790     {
 791         CHAR    buffer[MAX_STRING_LEN];
 792
 793         LoadString(Globals.hInstance, STID_CONTENTS, buffer, sizeof(buffer));
 794         MACRO_CreateButton("BTN_CONTENTS", buffer, "Contents()");
 795         LoadString(Globals.hInstance, STID_INDEX, buffer, sizeof(buffer));
 796         MACRO_CreateButton("BTN_INDEX", buffer, "Finder()");
 797         LoadString(Globals.hInstance, STID_BACK, buffer, sizeof(buffer));
 798         MACRO_CreateButton("BTN_BACK", buffer, "Back()");
 799         if (win->back.index <= 1) MACRO_DisableButton("BTN_BACK");
 800     }
 801
 802     if (!bReUsed)
 803     {
 804         win->hMainWnd = CreateWindowEx((bPopup) ? WS_EX_TOOLWINDOW : 0, MAIN_WIN_CLASS_NAME,
 805                                        WINHELP_GetCaption(wpage),
 806                                        bPrimary ? WS_OVERLAPPEDWINDOW : wpage->wininfo->win_style,
 807                                        wpage->wininfo->origin.x, wpage->wininfo->origin.y,
 808                                        wpage->wininfo->size.cx, wpage->wininfo->size.cy,
 809                                        bPopup ? Globals.active_win->hMainWnd : NULL,
 810                                        bPrimary ? LoadMenu(Globals.hInstance, MAKEINTRESOURCE(MAIN_MENU)) : 0,
 811                                        Globals.hInstance, win);
 812         if (!bPopup)
 813             /* Create button box and text Window */
 814             CreateWindow(BUTTON_BOX_WIN_CLASS_NAME, "", WS_CHILD | WS_VISIBLE,
 815                          0, 0, 0, 0, win->hMainWnd, (HMENU)CTL_ID_BUTTON, Globals.hInstance, NULL);
 816
 817         hTextWnd = CreateWindow(RICHEDIT_CLASS, NULL,
 818                                 ES_MULTILINE | ES_READONLY | WS_CHILD | WS_HSCROLL | WS_VSCROLL | WS_VISIBLE,
 819                                 0, 0, 0, 0, win->hMainWnd, (HMENU)CTL_ID_TEXT, Globals.hInstance, NULL);
 820         SendMessage(hTextWnd, EM_SETEVENTMASK, 0,
 821                     SendMessage(hTextWnd, EM_GETEVENTMASK, 0, 0) | ENM_MOUSEEVENTS);
 822         win->origRicheditWndProc = (WNDPROC)SetWindowLongPtr(hTextWnd, GWLP_WNDPROC,
 823                                                              (LONG_PTR)WINHELP_RicheditWndProc);
 824     }
 825
 826     hIcon = (wpage->page) ? wpage->page->file->hIcon : NULL;
 827     if (!hIcon) hIcon = LoadImage(Globals.hInstance, MAKEINTRESOURCE(IDI_WINHELP), IMAGE_ICON,
 828                                   GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED);
 829     SendMessage(win->hMainWnd, WM_SETICON, ICON_SMALL, (DWORD_PTR)hIcon);
 830
 831     /* Initialize file specific pushbuttons */
 832     if (!(wpage->wininfo->win_style & WS_POPUP) && wpage->page)
 833     {
 834         HLPFILE_MACRO  *macro;
 835         for (macro = wpage->page->file->first_macro; macro; macro = macro->next)
 836             MACRO_ExecuteMacro(win, macro->lpszMacro);
 837
 838         for (macro = wpage->page->first_macro; macro; macro = macro->next)
 839             MACRO_ExecuteMacro(win, macro->lpszMacro);
 840     }
 841     /* See #17681, in some cases, the newly created window is closed by the macros it contains
 842      * (braindead), so deal with this case
 843      */
 844     for (win = Globals.win_list; win; win = win->next)
 845     {
 846         if (!lstrcmpi(win->info->name, wpage->wininfo->name)) break;
 847     }
 848     if (!win || !WINHELP_ReleaseWindow(win)) return TRUE;
 849
 850     if (bPopup)
 851     {
 852         DWORD   mask = SendMessage(hTextWnd, EM_GETEVENTMASK, 0, 0);
 853
 854         win->font_scale = Globals.active_win->font_scale;
 855         WINHELP_SetupText(hTextWnd, win, wpage->relative);
 856
 857         /* we need the window to be shown for richedit to compute the size */
 858         ShowWindow(win->hMainWnd, nCmdShow);
 859         SendMessage(hTextWnd, EM_SETEVENTMASK, 0, mask | ENM_REQUESTRESIZE);
 860         SendMessage(hTextWnd, EM_REQUESTRESIZE, 0, 0);
 861         SendMessage(hTextWnd, EM_SETEVENTMASK, 0, mask);
 862     }
 863     else
 864     {
 865         WINHELP_SetupText(hTextWnd, win, wpage->relative);
 866         WINHELP_LayoutMainWindow(win);
 867         ShowWindow(win->hMainWnd, nCmdShow);
 868     }
 869
 870     return TRUE;
 871 }
 872
 873 /******************************************************************
 874  *             WINHELP_OpenHelpWindow
 875  * Main function to search for a page and display it in a window
 876  */
 877 BOOL WINHELP_OpenHelpWindow(HLPFILE_PAGE* (*lookup)(HLPFILE*, LONG, ULONG*),
 878                             HLPFILE* hlpfile, LONG val, HLPFILE_WINDOWINFO* wi,
 879                             int nCmdShow)
 880 {
 881     WINHELP_WNDPAGE     wpage;
 882
 883     wpage.page = lookup(hlpfile, val, &wpage.relative);
 884     if (wpage.page) wpage.page->file->wRefCount++;
 885     wpage.wininfo = wi;
 886     return WINHELP_CreateHelpWindow(&wpage, nCmdShow, TRUE);
 887 }
 888
 889 /******************************************************************
 890  *             WINHELP_HandleTextMouse
 891  *
 892  */
 893 static BOOL WINHELP_HandleTextMouse(WINHELP_WINDOW* win, UINT msg, LPARAM lParam)
 894 {
 895     HLPFILE*                hlpfile;
 896     HLPFILE_LINK*           link;
 897     BOOL                    ret = FALSE;
 898
 899     switch (msg)
 900     {
 901     case WM_LBUTTONDOWN:
 902         if ((link = WINHELP_FindLink(win, lParam)))
 903         {
 904             HLPFILE_WINDOWINFO*     wi;
 905
 906             switch (link->cookie)
 907             {
 908             case hlp_link_link:
 909                 if ((hlpfile = WINHELP_LookupHelpFile(link->string)))
 910                 {
 911                     if (link->window == -1)
 912                         wi = win->info;
 913                     else if (link->window < hlpfile->numWindows)
 914                         wi = &hlpfile->windows[link->window];
 915                     else
 916                     {
 917                         WINE_WARN("link to window %d/%d\n", link->window, hlpfile->numWindows);
 918                         break;
 919                     }
 920                     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, link->hash, wi, SW_NORMAL);
 921                 }
 922                 break;
 923             case hlp_link_popup:
 924                 if ((hlpfile = WINHELP_LookupHelpFile(link->string)))
 925                     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, link->hash,
 926                                            WINHELP_GetPopupWindowInfo(hlpfile, win, lParam),
 927                                            SW_NORMAL);
 928                 break;
 929             case hlp_link_macro:
 930                 MACRO_ExecuteMacro(win, link->string);
 931                 break;
 932             default:
 933                 WINE_FIXME("Unknown link cookie %d\n", link->cookie);
 934             }
 935             ret = TRUE;
 936         }
 937         break;
 938     }
 939     return ret;
 940 }
 941
 942 /***********************************************************************
 943  *
 944  *           WINHELP_CheckPopup
 945  */
 946 static BOOL WINHELP_CheckPopup(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, LRESULT* lret)
 947 {
 948     WINHELP_WINDOW*     popup;
 949
 950     if (!Globals.active_popup) return FALSE;
 951
 952     switch (msg)
 953     {
 954     case WM_NOTIFY:
 955         {
 956             MSGFILTER*  msgf = (MSGFILTER*)lParam;
 957             if (msgf->nmhdr.code == EN_MSGFILTER)
 958             {
 959                 if (!WINHELP_CheckPopup(hWnd, msgf->msg, msgf->wParam, msgf->lParam, NULL))
 960                     return FALSE;
 961                 if (lret) *lret = 1;
 962                 return TRUE;
 963             }
 964         }
 965         break;
 966     case WM_ACTIVATE:
 967         if (wParam != WA_INACTIVE || (HWND)lParam == Globals.active_win->hMainWnd ||
 968             (HWND)lParam == Globals.active_popup->hMainWnd ||
 969             GetWindow((HWND)lParam, GW_OWNER) == Globals.active_win->hMainWnd)
 970             break;
 971     case WM_LBUTTONDOWN:
 972         if (WINHELP_HandleTextMouse(Globals.active_popup, msg, lParam))
 973             return FALSE;
 974         /* fall through */
 975     case WM_LBUTTONUP:
 976     case WM_MBUTTONDOWN:
 977     case WM_RBUTTONDOWN:
 978     case WM_NCLBUTTONDOWN:
 979     case WM_NCMBUTTONDOWN:
 980     case WM_NCRBUTTONDOWN:
 981         popup = Globals.active_popup;
 982         Globals.active_popup = NULL;
 983         WINHELP_ReleaseWindow(popup);
 984         return TRUE;
 985     }
 986     return FALSE;
 987 }
 988
 989 /***********************************************************************
 990  *
 991  *           WINHELP_ButtonWndProc
 992  */
 993 static LRESULT CALLBACK WINHELP_ButtonWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 994 {
 995     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, NULL)) return 0;
 996
 997     if (msg == WM_KEYDOWN)
 998     {
 999         switch (wParam)
1000         {
1001         case VK_UP:
1002         case VK_DOWN:
1003         case VK_PRIOR:
1004         case VK_NEXT:
1005         case VK_ESCAPE:
1006             return SendMessage(GetParent(hWnd), msg, wParam, lParam);
1007         }
1008     }
1009
1010     return CallWindowProc(Globals.button_proc, hWnd, msg, wParam, lParam);
1011 }
1012
1013 /***********************************************************************
1014  *
1015  *           WINHELP_ButtonBoxWndProc
1016  */
1017 static LRESULT CALLBACK WINHELP_ButtonBoxWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1018 {
1019     WINDOWPOS      *winpos;
1020     WINHELP_WINDOW *win;
1021     WINHELP_BUTTON *button;
1022     SIZE button_size;
1023     INT  x, y;
1024
1025     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, NULL)) return 0L;
1026
1027     switch (msg)
1028     {
1029     case WM_WINDOWPOSCHANGING:
1030         winpos = (WINDOWPOS*) lParam;
1031         win = (WINHELP_WINDOW*) GetWindowLongPtr(GetParent(hWnd), 0);
1032
1033         /* Update buttons */
1034         button_size.cx = 0;
1035         button_size.cy = 0;
1036         for (button = win->first_button; button; button = button->next)
1037         {
1038             HDC  hDc;
1039             SIZE textsize;
1040             if (!button->hWnd)
1041             {
1042                 button->hWnd = CreateWindow(STRING_BUTTON, button->lpszName,
1043                                             WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
1044                                             0, 0, 0, 0,
1045                                             hWnd, (HMENU) button->wParam,
1046                                             Globals.hInstance, 0);
1047                 if (button->hWnd)
1048                 {
1049                     if (Globals.button_proc == NULL)
1050                     {
1051                         NONCLIENTMETRICSW ncm;
1052                         Globals.button_proc = (WNDPROC) GetWindowLongPtr(button->hWnd, GWLP_WNDPROC);
1053
1054                         ncm.cbSize = sizeof(NONCLIENTMETRICSW);
1055                         SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
1056                                               sizeof(NONCLIENTMETRICSW), &ncm, 0);
1057                         Globals.hButtonFont = CreateFontIndirectW(&ncm.lfMenuFont);
1058                     }
1059                     SetWindowLongPtr(button->hWnd, GWLP_WNDPROC, (LONG_PTR) WINHELP_ButtonWndProc);
1060                     if (Globals.hButtonFont)
1061                         SendMessage(button->hWnd, WM_SETFONT, (WPARAM)Globals.hButtonFont, TRUE);
1062                 }
1063             }
1064             hDc = GetDC(button->hWnd);
1065             GetTextExtentPoint(hDc, button->lpszName,
1066                                lstrlen(button->lpszName), &textsize);
1067             ReleaseDC(button->hWnd, hDc);
1068
1069             button_size.cx = max(button_size.cx, textsize.cx + BUTTON_CX);
1070             button_size.cy = max(button_size.cy, textsize.cy + BUTTON_CY);
1071         }
1072
1073         x = 0;
1074         y = 0;
1075         for (button = win->first_button; button; button = button->next)
1076         {
1077             SetWindowPos(button->hWnd, HWND_TOP, x, y, button_size.cx, button_size.cy, 0);
1078
1079             if (x + 2 * button_size.cx <= winpos->cx)
1080                 x += button_size.cx;
1081             else
1082                 x = 0, y += button_size.cy;
1083         }
1084         winpos->cy = y + (x ? button_size.cy : 0);
1085         break;
1086
1087     case WM_COMMAND:
1088         SendMessage(GetParent(hWnd), msg, wParam, lParam);
1089         break;
1090
1091     case WM_KEYDOWN:
1092         switch (wParam)
1093         {
1094         case VK_UP:
1095         case VK_DOWN:
1096         case VK_PRIOR:
1097         case VK_NEXT:
1098         case VK_ESCAPE:
1099             return SendMessage(GetParent(hWnd), msg, wParam, lParam);
1100         }
1101         break;
1102     }
1103
1104     return DefWindowProc(hWnd, msg, wParam, lParam);
1105 }
1106
1107 /******************************************************************
1108  *              WINHELP_HistoryWndProc
1109  *
1110  *
1111  */
1112 static LRESULT CALLBACK WINHELP_HistoryWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1113 {
1114     WINHELP_WINDOW*     win;
1115     PAINTSTRUCT         ps;
1116     HDC                 hDc;
1117     TEXTMETRIC          tm;
1118     unsigned int        i;
1119     RECT                r;
1120
1121     switch (msg)
1122     {
1123     case WM_NCCREATE:
1124         win = (WINHELP_WINDOW*)((LPCREATESTRUCT)lParam)->lpCreateParams;
1125         SetWindowLongPtr(hWnd, 0, (ULONG_PTR)win);
1126         win->hHistoryWnd = hWnd;
1127         break;
1128     case WM_CREATE:
1129         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1130         hDc = GetDC(hWnd);
1131         GetTextMetrics(hDc, &tm);
1132         GetWindowRect(hWnd, &r);
1133
1134         r.right = r.left + 30 * tm.tmAveCharWidth;
1135         r.bottom = r.top + (sizeof(Globals.history.set) / sizeof(Globals.history.set[0])) * tm.tmHeight;
1136         AdjustWindowRect(&r, GetWindowLong(hWnd, GWL_STYLE), FALSE);
1137         if (r.left < 0) {r.right -= r.left; r.left = 0;}
1138         if (r.top < 0) {r.bottom -= r.top; r.top = 0;}
1139
1140         MoveWindow(hWnd, r.left, r.top, r.right, r.bottom, TRUE);
1141         ReleaseDC(hWnd, hDc);
1142         break;
1143     case WM_LBUTTONDOWN:
1144         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1145         hDc = GetDC(hWnd);
1146         GetTextMetrics(hDc, &tm);
1147         i = HIWORD(lParam) / tm.tmHeight;
1148         if (i < Globals.history.index)
1149             WINHELP_CreateHelpWindow(&Globals.history.set[i], SW_SHOW, TRUE);
1150         ReleaseDC(hWnd, hDc);
1151         break;
1152     case WM_PAINT:
1153         hDc = BeginPaint(hWnd, &ps);
1154         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1155         GetTextMetrics(hDc, &tm);
1156
1157         for (i = 0; i < Globals.history.index; i++)
1158         {
1159             if (Globals.history.set[i].page->file == Globals.active_win->page->file)
1160             {
1161                 TextOut(hDc, 0, i * tm.tmHeight,
1162                         Globals.history.set[i].page->lpszTitle,
1163                         strlen(Globals.history.set[i].page->lpszTitle));
1164             }
1165             else
1166             {
1167                 char        buffer[1024];
1168                 const char* ptr1;
1169                 const char* ptr2;
1170                 unsigned    len;
1171
1172                 ptr1 = strrchr(Globals.history.set[i].page->file->lpszPath, '\\');
1173                 if (!ptr1) ptr1 = Globals.history.set[i].page->file->lpszPath;
1174                 else ptr1++;
1175                 ptr2 = strrchr(ptr1, '.');
1176                 len = ptr2 ? ptr2 - ptr1 : strlen(ptr1);
1177                 if (len > sizeof(buffer)) len = sizeof(buffer);
1178                 memcpy(buffer, ptr1, len);
1179                 if (len < sizeof(buffer)) buffer[len++] = ':';
1180                 strncpy(&buffer[len], Globals.history.set[i].page->lpszTitle, sizeof(buffer) - len);
1181                 buffer[sizeof(buffer) - 1] = '\0';
1182                 TextOut(hDc, 0, i * tm.tmHeight, buffer, strlen(buffer));
1183             }
1184         }
1185         EndPaint(hWnd, &ps);
1186         break;
1187     case WM_DESTROY:
1188         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1189         if (hWnd == win->hHistoryWnd)
1190             win->hHistoryWnd = 0;
1191         break;
1192     }
1193     return DefWindowProc(hWnd, msg, wParam, lParam);
1194 }
1195
1196 /**************************************************************************
1197  * cb_KWBTree
1198  *
1199  * HLPFILE_BPTreeCallback enumeration function for '|KWBTREE' internal file.
1200  *
1201  */
1202 static void cb_KWBTree(void *p, void **next, void *cookie)
1203 {
1204     HWND hListWnd = cookie;
1205     int count;
1206
1207     WINE_TRACE("Adding '%s' to search list\n", (char *)p);
1208     SendMessage(hListWnd, LB_INSERTSTRING, -1, (LPARAM)p);
1209     count = SendMessage(hListWnd, LB_GETCOUNT, 0, 0);
1210     SendMessage(hListWnd, LB_SETITEMDATA, count-1, (LPARAM)p);
1211     *next = (char*)p + strlen((char*)p) + 7;
1212 }
1213
1214 struct index_data
1215 {
1216     HLPFILE*    hlpfile;
1217     BOOL        jump;
1218     ULONG       offset;
1219 };
1220
1221 /**************************************************************************
1222  * WINHELP_IndexDlgProc
1223  *
1224  */
1225 static INT_PTR CALLBACK WINHELP_IndexDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1226 {
1227     static struct index_data* id;
1228     int sel;
1229
1230     switch (msg)
1231     {
1232     case WM_INITDIALOG:
1233         id = (struct index_data*)((PROPSHEETPAGE*)lParam)->lParam;
1234         HLPFILE_BPTreeEnum(id->hlpfile->kwbtree, cb_KWBTree,
1235                            GetDlgItem(hWnd, IDC_INDEXLIST));
1236         id->jump = FALSE;
1237         id->offset = 1;
1238         return TRUE;
1239     case WM_COMMAND:
1240         switch (HIWORD(wParam))
1241         {
1242         case LBN_DBLCLK:
1243             if (LOWORD(wParam) == IDC_INDEXLIST)
1244                 SendMessage(GetParent(hWnd), PSM_PRESSBUTTON, PSBTN_OK, 0);
1245             break;
1246         }
1247         break;
1248     case WM_NOTIFY:
1249         switch (((NMHDR*)lParam)->code)
1250         {
1251         case PSN_APPLY:
1252             sel = SendDlgItemMessage(hWnd, IDC_INDEXLIST, LB_GETCURSEL, 0, 0);
1253             if (sel != LB_ERR)
1254             {
1255                 BYTE *p;
1256                 int count;
1257
1258                 p = (BYTE*)SendDlgItemMessage(hWnd, IDC_INDEXLIST,
1259                                               LB_GETITEMDATA, sel, 0);
1260                 count = *(short*)((char *)p + strlen((char *)p) + 1);
1261                 if (count > 1)
1262                 {
1263                     MessageBox(hWnd, "count > 1 not supported yet", "Error", MB_OK | MB_ICONSTOP);
1264                     SetWindowLongPtr(hWnd, DWLP_MSGRESULT, PSNRET_INVALID);
1265                     return TRUE;
1266                 }
1267                 id->offset = *(ULONG*)((char *)p + strlen((char *)p) + 3);
1268                 id->offset = *(long*)(id->hlpfile->kwdata + id->offset + 9);
1269                 if (id->offset == 0xFFFFFFFF)
1270                 {
1271                     MessageBox(hWnd, "macro keywords not supported yet", "Error", MB_OK | MB_ICONSTOP);
1272                     SetWindowLongPtr(hWnd, DWLP_MSGRESULT, PSNRET_INVALID);
1273                     return TRUE;
1274                 }
1275                 id->jump = TRUE;
1276                 SetWindowLongPtr(hWnd, DWLP_MSGRESULT, PSNRET_NOERROR);
1277             }
1278             return TRUE;
1279         default:
1280             return FALSE;
1281         }
1282         break;
1283     default:
1284         break;
1285     }
1286     return FALSE;
1287 }
1288
1289 /**************************************************************************
1290  * WINHELP_SearchDlgProc
1291  *
1292  */
1293 static INT_PTR CALLBACK WINHELP_SearchDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1294 {
1295     switch (msg)
1296     {
1297     case WM_INITDIALOG:
1298         return TRUE;
1299     case WM_NOTIFY:
1300         switch (((NMHDR*)lParam)->code)
1301         {
1302         case PSN_APPLY:
1303             SetWindowLongPtr(hWnd, DWLP_MSGRESULT, PSNRET_NOERROR);
1304             return TRUE;
1305         default:
1306             return FALSE;
1307         }
1308         break;
1309     default:
1310         break;
1311     }
1312     return FALSE;
1313 }
1314
1315 /***********************************************************************
1316  *
1317  *           WINHELP_MainWndProc
1318  */
1319 static LRESULT CALLBACK WINHELP_MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1320 {
1321     WINHELP_WINDOW *win;
1322     WINHELP_BUTTON *button;
1323     HWND hTextWnd;
1324     LRESULT ret;
1325
1326     if (WINHELP_CheckPopup(hWnd, msg, wParam, lParam, &ret)) return ret;
1327
1328     switch (msg)
1329     {
1330     case WM_NCCREATE:
1331         win = (WINHELP_WINDOW*) ((LPCREATESTRUCT) lParam)->lpCreateParams;
1332         SetWindowLongPtr(hWnd, 0, (ULONG_PTR) win);
1333         if (!win->page && Globals.isBook)
1334             PostMessage(hWnd, WM_COMMAND, MNID_FILE_OPEN, 0);
1335         win->hMainWnd = hWnd;
1336         break;
1337
1338     case WM_WINDOWPOSCHANGED:
1339         WINHELP_LayoutMainWindow((WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0));
1340         break;
1341
1342     case WM_COMMAND:
1343         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1344         switch (wParam)
1345         {
1346             /* Menu FILE */
1347         case MNID_FILE_OPEN:    MACRO_FileOpen();       break;
1348         case MNID_FILE_PRINT:   MACRO_Print();          break;
1349         case MNID_FILE_SETUP:   MACRO_PrinterSetup();   break;
1350         case MNID_FILE_EXIT:    MACRO_Exit();           break;
1351
1352             /* Menu EDIT */
1353         case MNID_EDIT_COPYDLG:
1354             SendMessage(GetDlgItem(hWnd, CTL_ID_TEXT), WM_COPY, 0, 0);
1355             break;
1356         case MNID_EDIT_ANNOTATE:MACRO_Annotate();       break;
1357
1358             /* Menu Bookmark */
1359         case MNID_BKMK_DEFINE:  MACRO_BookmarkDefine(); break;
1360
1361             /* Menu Help */
1362         case MNID_HELP_HELPON:  MACRO_HelpOn();         break;
1363         case MNID_HELP_HELPTOP: MACRO_HelpOnTop();      break;
1364         case MNID_HELP_ABOUT:   MACRO_About();          break;
1365         case MNID_HELP_WINE:    ShellAbout(hWnd, "WINE", "Help", 0); break;
1366
1367             /* Context help */
1368         case MNID_CTXT_ANNOTATE:MACRO_Annotate();       break;
1369         case MNID_CTXT_COPY:    MACRO_CopyDialog();     break;
1370         case MNID_CTXT_PRINT:   MACRO_Print();          break;
1371         case MNID_OPTS_HISTORY: MACRO_History();        break;
1372         case MNID_OPTS_FONTS_SMALL:
1373         case MNID_CTXT_FONTS_SMALL:
1374             win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1375             if (win->font_scale != 0)
1376             {
1377                 win->font_scale = 0;
1378                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1379             }
1380             break;
1381         case MNID_OPTS_FONTS_NORMAL:
1382         case MNID_CTXT_FONTS_NORMAL:
1383             win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1384             if (win->font_scale != 1)
1385             {
1386                 win->font_scale = 1;
1387                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1388             }
1389             break;
1390         case MNID_OPTS_FONTS_LARGE:
1391         case MNID_CTXT_FONTS_LARGE:
1392             win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1393             if (win->font_scale != 2)
1394             {
1395                 win->font_scale = 2;
1396                 WINHELP_SetupText(GetDlgItem(hWnd, CTL_ID_TEXT), win, 0 /* FIXME */);
1397             }
1398             break;
1399         case MNID_OPTS_HELP_DEFAULT:
1400         case MNID_OPTS_HELP_VISIBLE:
1401         case MNID_OPTS_HELP_NONVISIBLE:
1402         case MNID_OPTS_SYSTEM_COLORS:
1403         case MNID_CTXT_HELP_DEFAULT:
1404         case MNID_CTXT_HELP_VISIBLE:
1405         case MNID_CTXT_HELP_NONVISIBLE:
1406         case MNID_CTXT_SYSTEM_COLORS:
1407             /* FIXME: NIY */
1408
1409         default:
1410             /* Buttons */
1411             for (button = win->first_button; button; button = button->next)
1412                 if (wParam == button->wParam) break;
1413             if (button)
1414                 MACRO_ExecuteMacro(win, button->lpszMacro);
1415             else if (!HIWORD(wParam))
1416                 MessageBox(0, MAKEINTRESOURCE(STID_NOT_IMPLEMENTED),
1417                            MAKEINTRESOURCE(STID_WHERROR), MB_OK);
1418             break;
1419         }
1420         break;
1421 /* EPP     case WM_DESTROY: */
1422 /* EPP         if (Globals.hPopupWnd) DestroyWindow(Globals.hPopupWnd); */
1423 /* EPP         break; */
1424     case WM_COPYDATA:
1425         return WINHELP_HandleCommand((HWND)wParam, lParam);
1426
1427     case WM_CHAR:
1428         if (wParam == 3)
1429         {
1430             SendMessage(GetDlgItem(hWnd, CTL_ID_TEXT), WM_COPY, 0, 0);
1431             return 0;
1432         }
1433         break;
1434
1435     case WM_KEYDOWN:
1436         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1437         hTextWnd = GetDlgItem(win->hMainWnd, CTL_ID_TEXT);
1438
1439         switch (wParam)
1440         {
1441         case VK_UP:
1442             SendMessage(hTextWnd, EM_SCROLL, SB_LINEUP, 0);
1443             return 0;
1444         case VK_DOWN:
1445             SendMessage(hTextWnd, EM_SCROLL, SB_LINEDOWN, 0);
1446             return 0;
1447         case VK_PRIOR:
1448             SendMessage(hTextWnd, EM_SCROLL, SB_PAGEUP, 0);
1449             return 0;
1450         case VK_NEXT:
1451             SendMessage(hTextWnd, EM_SCROLL, SB_PAGEDOWN, 0);
1452             return 0;
1453         case VK_ESCAPE:
1454             MACRO_Exit();
1455             return 0;
1456         }
1457         break;
1458
1459     case WM_NOTIFY:
1460         if (wParam == CTL_ID_TEXT)
1461         {
1462             RECT        rc;
1463
1464             switch (((NMHDR*)lParam)->code)
1465             {
1466             case EN_MSGFILTER:
1467                 {
1468                     const MSGFILTER*    msgf = (const MSGFILTER*)lParam;
1469                     switch (msgf->msg)
1470                     {
1471                     case WM_KEYUP:
1472                         if (msgf->wParam == VK_ESCAPE)
1473                             WINHELP_ReleaseWindow((WINHELP_WINDOW*)GetWindowLongPtr(hWnd, 0));
1474                         break;
1475                     case WM_RBUTTONDOWN:
1476                     {
1477                         HMENU       hMenu;
1478                         POINT       pt;
1479
1480                         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1481                         hMenu = LoadMenu(Globals.hInstance, (LPSTR)CONTEXT_MENU);
1482                         switch (win->font_scale)
1483                         {
1484                         case 0:
1485                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_SMALL,
1486                                           MF_BYCOMMAND|MF_CHECKED);
1487                             break;
1488                         default:
1489                             WINE_FIXME("Unsupported %d\n", win->font_scale);
1490                         case 1:
1491                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_NORMAL,
1492                                           MF_BYCOMMAND|MF_CHECKED);
1493                             break;
1494                         case 2:
1495                             CheckMenuItem(hMenu, MNID_CTXT_FONTS_LARGE,
1496                                           MF_BYCOMMAND|MF_CHECKED);
1497                             break;
1498                         }
1499                         pt.x = (int)(short)LOWORD(msgf->lParam);
1500                         pt.y = (int)(short)HIWORD(msgf->lParam);
1501                         ClientToScreen(msgf->nmhdr.hwndFrom, &pt);
1502                         TrackPopupMenu(GetSubMenu(hMenu, 0), TPM_LEFTALIGN|TPM_TOPALIGN,
1503                                        pt.x, pt.y, 0, hWnd, NULL);
1504                         DestroyMenu(hMenu);
1505                     }
1506                     break;
1507                     default:
1508                         return WINHELP_HandleTextMouse((WINHELP_WINDOW*)GetWindowLongPtr(hWnd, 0),
1509                                                        msgf->msg, msgf->lParam);
1510                     }
1511                 }
1512                 break;
1513
1514             case EN_REQUESTRESIZE:
1515                 rc = ((REQRESIZE*)lParam)->rc;
1516                 win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1517                 AdjustWindowRect(&rc, GetWindowLong(win->hMainWnd, GWL_STYLE),
1518                                  FALSE);
1519                 SetWindowPos(win->hMainWnd, HWND_TOP, 0, 0,
1520                              rc.right - rc.left, rc.bottom - rc.top,
1521                              SWP_NOMOVE | SWP_NOZORDER);
1522                 WINHELP_LayoutMainWindow(win);
1523                 break;
1524             }
1525         }
1526         break;
1527
1528     case WM_INITMENUPOPUP:
1529         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1530         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_SMALL,
1531                       MF_BYCOMMAND | (win->font_scale == 0) ? MF_CHECKED : 0);
1532         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_NORMAL,
1533                       MF_BYCOMMAND | (win->font_scale == 1) ? MF_CHECKED : 0);
1534         CheckMenuItem((HMENU)wParam, MNID_OPTS_FONTS_LARGE,
1535                       MF_BYCOMMAND | (win->font_scale == 2) ? MF_CHECKED : 0);
1536         break;
1537     case WM_DESTROY:
1538         win = (WINHELP_WINDOW*) GetWindowLongPtr(hWnd, 0);
1539         WINHELP_DeleteWindow(win);
1540         break;
1541     }
1542     return DefWindowProc(hWnd, msg, wParam, lParam);
1543 }
1544
1545 /**************************************************************************
1546  * WINHELP_CreateIndexWindow
1547  *
1548  * Displays a dialog with keywords of current help file.
1549  *
1550  */
1551 BOOL WINHELP_CreateIndexWindow(BOOL is_search)
1552 {
1553     HPROPSHEETPAGE      psPage[3];
1554     PROPSHEETPAGE       psp;
1555     PROPSHEETHEADER     psHead;
1556     struct index_data   id;
1557     char                buf[256];
1558
1559     if (Globals.active_win && Globals.active_win->page && Globals.active_win->page->file)
1560         id.hlpfile = Globals.active_win->page->file;
1561     else
1562         return FALSE;
1563
1564     if (id.hlpfile->kwbtree == NULL)
1565     {
1566         WINE_TRACE("No index provided\n");
1567         return FALSE;
1568     }
1569
1570     InitCommonControls();
1571
1572     id.jump = FALSE;
1573     memset(&psp, 0, sizeof(psp));
1574     psp.dwSize = sizeof(psp);
1575     psp.dwFlags = 0;
1576     psp.hInstance = Globals.hInstance;
1577
1578     psp.u.pszTemplate = MAKEINTRESOURCE(IDD_INDEX);
1579     psp.lParam = (LPARAM)&id;
1580     psp.pfnDlgProc = WINHELP_IndexDlgProc;
1581     psPage[0] = CreatePropertySheetPage(&psp);
1582
1583     psp.u.pszTemplate = MAKEINTRESOURCE(IDD_SEARCH);
1584     psp.lParam = (LPARAM)&id;
1585     psp.pfnDlgProc = WINHELP_SearchDlgProc;
1586     psPage[1] = CreatePropertySheetPage(&psp);
1587
1588     memset(&psHead, 0, sizeof(psHead));
1589     psHead.dwSize = sizeof(psHead);
1590
1591     LoadString(Globals.hInstance, STID_PSH_INDEX, buf, sizeof(buf));
1592     strcat(buf, Globals.active_win->info->caption);
1593
1594     psHead.pszCaption = buf;
1595     psHead.nPages = 2;
1596     psHead.u2.nStartPage = is_search ? 1 : 0;
1597     psHead.hwndParent = Globals.active_win->hMainWnd;
1598     psHead.u3.phpage = psPage;
1599     psHead.dwFlags = PSH_NOAPPLYNOW;
1600
1601     PropertySheet(&psHead);
1602     if (id.jump)
1603     {
1604         WINE_TRACE("got %d as an offset\n", id.offset);
1605         WINHELP_OpenHelpWindow(HLPFILE_PageByOffset, id.hlpfile, id.offset,
1606                                Globals.active_win->info, SW_NORMAL);
1607     }
1608     return TRUE;
1609 }
1610
1611 /***********************************************************************
1612  *
1613  *           RegisterWinClasses
1614  */
1615 static BOOL WINHELP_RegisterWinClasses(void)
1616 {
1617     WNDCLASSEX class_main, class_button_box, class_history;
1618
1619     class_main.cbSize              = sizeof(class_main);
1620     class_main.style               = CS_HREDRAW | CS_VREDRAW;
1621     class_main.lpfnWndProc         = WINHELP_MainWndProc;
1622     class_main.cbClsExtra          = 0;
1623     class_main.cbWndExtra          = sizeof(WINHELP_WINDOW *);
1624     class_main.hInstance           = Globals.hInstance;
1625     class_main.hIcon               = LoadIcon(Globals.hInstance, MAKEINTRESOURCE(IDI_WINHELP));
1626     class_main.hCursor             = LoadCursor(0, IDC_ARROW);
1627     class_main.hbrBackground       = (HBRUSH)(COLOR_WINDOW+1);
1628     class_main.lpszMenuName        = 0;
1629     class_main.lpszClassName       = MAIN_WIN_CLASS_NAME;
1630     class_main.hIconSm             = LoadImage(Globals.hInstance, MAKEINTRESOURCE(IDI_WINHELP), IMAGE_ICON,
1631                                                GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
1632                                                LR_SHARED);
1633
1634     class_button_box               = class_main;
1635     class_button_box.lpfnWndProc   = WINHELP_ButtonBoxWndProc;
1636     class_button_box.cbWndExtra    = 0;
1637     class_button_box.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
1638     class_button_box.lpszClassName = BUTTON_BOX_WIN_CLASS_NAME;
1639
1640     class_history                  = class_main;
1641     class_history.lpfnWndProc      = WINHELP_HistoryWndProc;
1642     class_history.lpszClassName    = HISTORY_WIN_CLASS_NAME;
1643
1644     return (RegisterClassEx(&class_main) &&
1645             RegisterClassEx(&class_button_box) &&
1646             RegisterClassEx(&class_history));
1647 }
1648
1649 /***********************************************************************
1650  *
1651  *           WinMain
1652  */
1653 int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
1654 {
1655     MSG                 msg;
1656     LONG                lHash = 0;
1657     HLPFILE*            hlpfile;
1658     static CHAR         default_wndname[] = "main";
1659     LPSTR               wndname = default_wndname;
1660     WINHELP_DLL*        dll;
1661
1662     Globals.hInstance = hInstance;
1663
1664     if (LoadLibrary("riched20.dll") == NULL)
1665         return MessageBox(0, MAKEINTRESOURCE(STID_NO_RICHEDIT),
1666                           MAKEINTRESOURCE(STID_WHERROR), MB_OK);
1667
1668     /* Get options */
1669     while (*cmdline && (*cmdline == ' ' || *cmdline == '-'))
1670     {
1671         CHAR   option;
1672         LPCSTR topic_id;
1673         if (*cmdline++ == ' ') continue;
1674
1675         option = *cmdline;
1676         if (option) cmdline++;
1677         while (*cmdline && *cmdline == ' ') cmdline++;
1678         switch (option)
1679         {
1680         case 'i':
1681         case 'I':
1682             topic_id = cmdline;
1683             while (*cmdline && *cmdline != ' ') cmdline++;
1684             if (*cmdline) *cmdline++ = '\0';
1685             lHash = HLPFILE_Hash(topic_id);
1686             break;
1687
1688         case '3':
1689         case '4':
1690             Globals.wVersion = option - '0';
1691             break;
1692
1693         case 'x':
1694             show = SW_HIDE;
1695             Globals.isBook = FALSE;
1696             break;
1697
1698         default:
1699             WINE_FIXME("Unsupported cmd line: %s\n", cmdline);
1700             break;
1701         }
1702     }
1703
1704     /* Create primary window */
1705     if (!WINHELP_RegisterWinClasses())
1706     {
1707         WINE_FIXME("Couldn't register classes\n");
1708         return 0;
1709     }
1710
1711     if (*cmdline)
1712     {
1713         char*   ptr;
1714         if ((*cmdline == '"') && (ptr = strchr(cmdline+1, '"')))
1715         {
1716             cmdline++;
1717             *ptr = '\0';
1718         }
1719         if ((ptr = strchr(cmdline, '>')))
1720         {
1721             *ptr = '\0';
1722             wndname = ptr + 1;
1723         }
1724         hlpfile = WINHELP_LookupHelpFile(cmdline);
1725         if (!hlpfile) return 0;
1726     }
1727     else hlpfile = NULL;
1728     WINHELP_OpenHelpWindow(HLPFILE_PageByHash, hlpfile, lHash,
1729                            WINHELP_GetWindowInfo(hlpfile, wndname), show);
1730
1731     /* Message loop */
1732     while ((Globals.win_list || Globals.active_popup) && GetMessage(&msg, 0, 0, 0))
1733     {
1734         TranslateMessage(&msg);
1735         DispatchMessage(&msg);
1736     }
1737     for (dll = Globals.dlls; dll; dll = dll->next)
1738     {
1739         if (dll->class & DC_INITTERM) dll->handler(DW_TERM, 0, 0);
1740     }
1741     return 0;
1742 }