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Release 0.9.39.
[wine/gsoc-2012-control.git] / programs / winhelp / winhelp.c
blob8905d6e222ed7107a57159e00e35dbc075407f47
1 /*
2 * Help Viewer
3 *
4 * Copyright 1996 Ulrich Schmid <uschmid@mail.hh.provi.de>
5 * 2002 Sylvain Petreolle <spetreolle@yahoo.fr>
6 * 2002 Eric Pouech <eric.pouech@wanadoo.fr>
7 * 2004 Ken Belleau <jamez@ivic.qc.ca>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 */
23
24 #include <assert.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <stdarg.h>
28 #include <stdlib.h>
29
30 #include "windef.h"
31 #include "winbase.h"
32 #include "wingdi.h"
33 #include "winuser.h"
34 #include "commdlg.h"
35 #include "winhelp.h"
36 #include "winhelp_res.h"
37 #include "shellapi.h"
38
39 #include "wine/debug.h"
40
41 WINE_DEFAULT_DEBUG_CHANNEL(winhelp);
42
43 static BOOL WINHELP_RegisterWinClasses(void);
44 static LRESULT CALLBACK WINHELP_MainWndProc(HWND, UINT, WPARAM, LPARAM);
45 static LRESULT CALLBACK WINHELP_TextWndProc(HWND, UINT, WPARAM, LPARAM);
46 static LRESULT CALLBACK WINHELP_ButtonBoxWndProc(HWND, UINT, WPARAM, LPARAM);
47 static LRESULT CALLBACK WINHELP_ButtonWndProc(HWND, UINT, WPARAM, LPARAM);
48 static LRESULT CALLBACK WINHELP_HistoryWndProc(HWND, UINT, WPARAM, LPARAM);
49 static LRESULT CALLBACK WINHELP_ShadowWndProc(HWND, UINT, WPARAM, LPARAM);
50 static void WINHELP_CheckPopup(UINT);
51 static BOOL WINHELP_SplitLines(HWND hWnd, LPSIZE);
52 static void WINHELP_InitFonts(HWND hWnd);
53 static void WINHELP_DeleteLines(WINHELP_WINDOW*);
54 static void WINHELP_DeleteWindow(WINHELP_WINDOW*);
55 static void WINHELP_SetupText(HWND hWnd);
56 static WINHELP_LINE_PART* WINHELP_IsOverLink(WINHELP_WINDOW*, WPARAM, LPARAM);
57
58 WINHELP_GLOBALS Globals = {3, NULL, NULL, 0, TRUE, NULL, NULL, NULL, NULL};
59
60
61 /***********************************************************************
62 *
63 * WINHELP_GetOpenFileName
64 */
65 BOOL WINHELP_GetOpenFileName(LPSTR lpszFile, int len)
66 {
67 OPENFILENAME openfilename;
68 CHAR szDir[MAX_PATH];
69 CHAR szzFilter[2 * MAX_STRING_LEN + 100];
70 LPSTR p = szzFilter;
71
72 WINE_TRACE("()\n");
73
74 LoadString(Globals.hInstance, STID_HELP_FILES_HLP, p, MAX_STRING_LEN);
75 p += strlen(p) + 1;
76 lstrcpy(p, "*.hlp");
77 p += strlen(p) + 1;
78 LoadString(Globals.hInstance, STID_ALL_FILES, p, MAX_STRING_LEN);
79 p += strlen(p) + 1;
80 lstrcpy(p, "*.*");
81 p += strlen(p) + 1;
82 *p = '\0';
83
84 GetCurrentDirectory(sizeof(szDir), szDir);
85
86 lpszFile[0]='\0';
87
88 openfilename.lStructSize = sizeof(OPENFILENAME);
89 openfilename.hwndOwner = NULL;
90 openfilename.hInstance = Globals.hInstance;
91 openfilename.lpstrFilter = szzFilter;
92 openfilename.lpstrCustomFilter = 0;
93 openfilename.nMaxCustFilter = 0;
94 openfilename.nFilterIndex = 1;
95 openfilename.lpstrFile = lpszFile;
96 openfilename.nMaxFile = len;
97 openfilename.lpstrFileTitle = 0;
98 openfilename.nMaxFileTitle = 0;
99 openfilename.lpstrInitialDir = szDir;
100 openfilename.lpstrTitle = 0;
101 openfilename.Flags = 0;
102 openfilename.nFileOffset = 0;
103 openfilename.nFileExtension = 0;
104 openfilename.lpstrDefExt = 0;
105 openfilename.lCustData = 0;
106 openfilename.lpfnHook = 0;
107 openfilename.lpTemplateName = 0;
108
109 return GetOpenFileName(&openfilename);
110 }
111
112 /***********************************************************************
113 *
114 * WINHELP_LookupHelpFile
115 */
116 HLPFILE* WINHELP_LookupHelpFile(LPCSTR lpszFile)
117 {
118 HLPFILE* hlpfile;
119 char szFullName[MAX_PATH];
120 char szAddPath[MAX_PATH];
121 char *p;
122
123 /*
124 * NOTE: This is needed by popup windows only.
125 * In other cases it's not needed but does not hurt though.
126 */
127 if (Globals.active_win && Globals.active_win->page && Globals.active_win->page->file)
128 {
129 strcpy(szAddPath, Globals.active_win->page->file->lpszPath);
130 p = strrchr(szAddPath, '\\');
131 if (p) *p = 0;
132 }
133
134 /*
135 * FIXME: Should we swap conditions?
136 */
137 if (!SearchPath(NULL, lpszFile, ".hlp", MAX_PATH, szFullName, NULL) &&
138 !SearchPath(szAddPath, lpszFile, ".hlp", MAX_PATH, szFullName, NULL))
139 {
140 if (WINHELP_MessageBoxIDS_s(STID_FILE_NOT_FOUND_s, lpszFile, STID_WHERROR,
141 MB_YESNO|MB_ICONQUESTION) != IDYES)
142 return NULL;
143 if (!WINHELP_GetOpenFileName(szFullName, MAX_PATH))
144 return NULL;
145 }
146 hlpfile = HLPFILE_ReadHlpFile(szFullName);
147 if (!hlpfile)
148 WINHELP_MessageBoxIDS_s(STID_HLPFILE_ERROR_s, lpszFile,
149 STID_WHERROR, MB_OK|MB_ICONSTOP);
150 return hlpfile;
151 }
152
153 /******************************************************************
154 * WINHELP_GetWindowInfo
155 *
156 *
157 */
158 HLPFILE_WINDOWINFO* WINHELP_GetWindowInfo(HLPFILE* hlpfile, LPCSTR name)
159 {
160 static HLPFILE_WINDOWINFO mwi;
161 unsigned int i;
162
163 if (!name || !name[0])
164 name = Globals.active_win->lpszName;
165
166 if (hlpfile)
167 for (i = 0; i < hlpfile->numWindows; i++)
168 if (!strcmp(hlpfile->windows[i].name, name))
169 return &hlpfile->windows[i];
170
171 if (strcmp(name, "main") != 0)
172 {
173 WINE_FIXME("Couldn't find window info for %s\n", name);
174 assert(0);
175 return NULL;
176 }
177 if (!mwi.name[0])
178 {
179 strcpy(mwi.type, "primary");
180 strcpy(mwi.name, "main");
181 if (!LoadString(Globals.hInstance, STID_WINE_HELP,
182 mwi.caption, sizeof(mwi.caption)))
183 strcpy(mwi.caption, hlpfile->lpszTitle);
184 mwi.origin.x = mwi.origin.y = mwi.size.cx = mwi.size.cy = CW_USEDEFAULT;
185 mwi.style = SW_SHOW;
186 mwi.win_style = WS_OVERLAPPEDWINDOW;
187 mwi.sr_color = mwi.sr_color = 0xFFFFFF;
188 }
189 return &mwi;
190 }
191
192 /******************************************************************
193 * HLPFILE_GetPopupWindowInfo
194 *
195 *
196 */
197 static HLPFILE_WINDOWINFO* WINHELP_GetPopupWindowInfo(HLPFILE* hlpfile, HWND hParentWnd, POINT* mouse)
198 {
199 static HLPFILE_WINDOWINFO wi;
200
201 RECT parent_rect;
202
203 wi.type[0] = wi.name[0] = wi.caption[0] = '\0';
204
205 /* Calculate horizontal size and position of a popup window */
206 GetWindowRect(hParentWnd, &parent_rect);
207 wi.size.cx = (parent_rect.right - parent_rect.left) / 2;
208 wi.size.cy = 10; /* need a non null value, so that border are taken into account while computing */
209
210 wi.origin = *mouse;
211 ClientToScreen(hParentWnd, &wi.origin);
212 wi.origin.x -= wi.size.cx / 2;
213 wi.origin.x = min(wi.origin.x, GetSystemMetrics(SM_CXSCREEN) - wi.size.cx);
214 wi.origin.x = max(wi.origin.x, 0);
215
216 wi.style = SW_SHOW;
217 wi.win_style = WS_POPUPWINDOW;
218 wi.sr_color = wi.sr_color = 0xFFFFFF;
219
220 return &wi;
221 }
222
223 /***********************************************************************
224 *
225 * WinMain
226 */
227 int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE prev, LPSTR cmdline, int show)
228 {
229 MSG msg;
230 LONG lHash = 0;
231 HLPFILE* hlpfile;
232 static CHAR default_wndname[] = "main";
233 LPSTR wndname = default_wndname;
234 WINHELP_DLL* dll;
235
236 Globals.hInstance = hInstance;
237
238 /* Get options */
239 while (*cmdline && (*cmdline == ' ' || *cmdline == '-'))
240 {
241 CHAR option;
242 LPCSTR topic_id;
243 if (*cmdline++ == ' ') continue;
244
245 option = *cmdline;
246 if (option) cmdline++;
247 while (*cmdline && *cmdline == ' ') cmdline++;
248 switch (option)
249 {
250 case 'i':
251 case 'I':
252 topic_id = cmdline;
253 while (*cmdline && *cmdline != ' ') cmdline++;
254 if (*cmdline) *cmdline++ = '\0';
255 lHash = HLPFILE_Hash(topic_id);
256 break;
257
258 case '3':
259 case '4':
260 Globals.wVersion = option - '0';
261 break;
262
263 case 'x':
264 show = SW_HIDE;
265 Globals.isBook = FALSE;
266 break;
267
268 default:
269 WINE_FIXME("Unsupported cmd line: %s\n", cmdline);
270 break;
271 }
272 }
273
274 /* Create primary window */
275 if (!WINHELP_RegisterWinClasses())
276 {
277 WINE_FIXME("Couldn't register classes\n");
278 return 0;
279 }
280
281 if (*cmdline)
282 {
283 char* ptr;
284 if ((*cmdline == '"') && (ptr = strchr(cmdline+1, '"')))
285 {
286 cmdline++;
287 *ptr = '\0';
288 }
289 if ((ptr = strchr(cmdline, '>')))
290 {
291 *ptr = '\0';
292 wndname = ptr + 1;
293 }
294 hlpfile = WINHELP_LookupHelpFile(cmdline);
295 if (!hlpfile) return 0;
296 }
297 else hlpfile = NULL;
298 WINHELP_CreateHelpWindowByHash(hlpfile, lHash,
299 WINHELP_GetWindowInfo(hlpfile, wndname), show);
300
301 /* Message loop */
302 while (GetMessage(&msg, 0, 0, 0))
303 {
304 TranslateMessage(&msg);
305 DispatchMessage(&msg);
306 }
307 for (dll = Globals.dlls; dll; dll = dll->next)
308 {
309 if (dll->class & DC_INITTERM) dll->handler(DW_TERM, 0, 0);
310 }
311 return 0;
312 }
313
314 /***********************************************************************
315 *
316 * RegisterWinClasses
317 */
318 static BOOL WINHELP_RegisterWinClasses(void)
319 {
320 WNDCLASS class_main, class_button_box, class_text, class_shadow, class_history;
321
322 class_main.style = CS_HREDRAW | CS_VREDRAW;
323 class_main.lpfnWndProc = WINHELP_MainWndProc;
324 class_main.cbClsExtra = 0;
325 class_main.cbWndExtra = sizeof(LONG);
326 class_main.hInstance = Globals.hInstance;
327 class_main.hIcon = LoadIcon(0, IDI_APPLICATION);
328 class_main.hCursor = LoadCursor(0, IDC_ARROW);
329 class_main.hbrBackground = GetStockObject(WHITE_BRUSH);
330 class_main.lpszMenuName = 0;
331 class_main.lpszClassName = MAIN_WIN_CLASS_NAME;
332
333 class_button_box = class_main;
334 class_button_box.lpfnWndProc = WINHELP_ButtonBoxWndProc;
335 class_button_box.hbrBackground = GetStockObject(GRAY_BRUSH);
336 class_button_box.lpszClassName = BUTTON_BOX_WIN_CLASS_NAME;
337
338 class_text = class_main;
339 class_text.lpfnWndProc = WINHELP_TextWndProc;
340 class_text.hbrBackground = 0;
341 class_text.lpszClassName = TEXT_WIN_CLASS_NAME;
342
343 class_shadow = class_main;
344 class_shadow.lpfnWndProc = WINHELP_ShadowWndProc;
345 class_shadow.hbrBackground = GetStockObject(GRAY_BRUSH);
346 class_shadow.lpszClassName = SHADOW_WIN_CLASS_NAME;
347
348 class_history = class_main;
349 class_history.lpfnWndProc = WINHELP_HistoryWndProc;
350 class_history.lpszClassName = HISTORY_WIN_CLASS_NAME;
351
352 return (RegisterClass(&class_main) &&
353 RegisterClass(&class_button_box) &&
354 RegisterClass(&class_text) &&
355 RegisterClass(&class_shadow) &&
356 RegisterClass(&class_history));
357 }
358
359 typedef struct
360 {
361 WORD size;
362 WORD command;
363 LONG data;
364 LONG reserved;
365 WORD ofsFilename;
366 WORD ofsData;
367 } WINHELP,*LPWINHELP;
368
369 /******************************************************************
370 * WINHELP_HandleCommand
371 *
372 *
373 */
374 static LRESULT WINHELP_HandleCommand(HWND hSrcWnd, LPARAM lParam)
375 {
376 COPYDATASTRUCT* cds = (COPYDATASTRUCT*)lParam;
377 WINHELP* wh;
378
379 if (cds->dwData != 0xA1DE505)
380 {
381 WINE_FIXME("Wrong magic number (%08lx)\n", cds->dwData);
382 return 0;
383 }
384
385 wh = (WINHELP*)cds->lpData;
386
387 if (wh)
388 {
389 char* ptr = (wh->ofsFilename) ? (LPSTR)wh + wh->ofsFilename : NULL;
390
391 WINE_TRACE("Got[%u]: cmd=%u data=%08x fn=%s\n",
392 wh->size, wh->command, wh->data, ptr);
393 switch (wh->command)
394 {
395 case HELP_CONTEXT:
396 if (ptr)
397 {
398 MACRO_JumpContext(ptr, "main", wh->data);
399 }
400 break;
401 case HELP_QUIT:
402 MACRO_Exit();
403 break;
404 case HELP_CONTENTS:
405 if (ptr)
406 {
407 MACRO_JumpContents(ptr, "main");
408 }
409 break;
410 case HELP_HELPONHELP:
411 MACRO_HelpOn();
412 break;
413 /* case HELP_SETINDEX: */
414 case HELP_SETCONTENTS:
415 if (ptr)
416 {
417 MACRO_SetContents(ptr, wh->data);
418 }
419 break;
420 case HELP_CONTEXTPOPUP:
421 if (ptr)
422 {
423 MACRO_PopupContext(ptr, wh->data);
424 }
425 break;
426 /* case HELP_FORCEFILE:*/
427 /* case HELP_CONTEXTMENU: */
428 case HELP_FINDER:
429 /* in fact, should be the topic dialog box */
430 WINE_FIXME("HELP_FINDER: stub\n");
431 if (ptr)
432 {
433 MACRO_JumpHash(ptr, "main", 0);
434 }
435 break;
436 /* case HELP_WM_HELP: */
437 /* case HELP_SETPOPUP_POS: */
438 /* case HELP_KEY: */
439 /* case HELP_COMMAND: */
440 /* case HELP_PARTIALKEY: */
441 /* case HELP_MULTIKEY: */
442 /* case HELP_SETWINPOS: */
443 WINE_FIXME("Unknown command (%x) for remote winhelp control\n", wh->command);
444 break;
445 }
446 }
447 return 0L;
448 }
449
450 /******************************************************************
451 * WINHELP_ReuseWindow
452 *
453 *
454 */
455 static BOOL WINHELP_ReuseWindow(WINHELP_WINDOW* win, WINHELP_WINDOW* oldwin,
456 HLPFILE_PAGE* page, int nCmdShow)
457 {
458 unsigned int i;
459
460 win->hMainWnd = oldwin->hMainWnd;
461 win->hButtonBoxWnd = oldwin->hButtonBoxWnd;
462 win->hTextWnd = oldwin->hTextWnd;
463 win->hHistoryWnd = oldwin->hHistoryWnd;
464 oldwin->hMainWnd = oldwin->hButtonBoxWnd = oldwin->hTextWnd = oldwin->hHistoryWnd = 0;
465 win->hBrush = oldwin->hBrush;
466
467 SetWindowLong(win->hMainWnd, 0, (LONG)win);
468 SetWindowLong(win->hButtonBoxWnd, 0, (LONG)win);
469 SetWindowLong(win->hTextWnd, 0, (LONG)win);
470 SetWindowLong(win->hHistoryWnd, 0, (LONG)win);
471
472 WINHELP_InitFonts(win->hMainWnd);
473
474 if (page)
475 SetWindowText(win->hMainWnd, page->file->lpszTitle);
476
477 WINHELP_SetupText(win->hTextWnd);
478 InvalidateRect(win->hTextWnd, NULL, TRUE);
479 SendMessage(win->hMainWnd, WM_USER, 0, 0);
480 ShowWindow(win->hMainWnd, nCmdShow);
481 UpdateWindow(win->hTextWnd);
482
483 if (!(win->info->win_style & WS_POPUP))
484 {
485 unsigned num;
486
487 memcpy(win->history, oldwin->history, sizeof(win->history));
488 win->histIndex = oldwin->histIndex;
489
490 /* FIXME: when using back, we shouldn't update the history... */
491
492 if (page)
493 {
494 for (i = 0; i < win->histIndex; i++)
495 if (win->history[i] == page) break;
496
497 /* if the new page is already in the history, do nothing */
498 if (i == win->histIndex)
499 {
500 num = sizeof(win->history) / sizeof(win->history[0]);
501 if (win->histIndex == num)
502 {
503 /* we're full, remove latest entry */
504 HLPFILE_FreeHlpFile(win->history[0]->file);
505 memmove(&win->history[0], &win->history[1],
506 (num - 1) * sizeof(win->history[0]));
507 win->histIndex--;
508 }
509 win->history[win->histIndex++] = page;
510 page->file->wRefCount++;
511 if (win->hHistoryWnd) InvalidateRect(win->hHistoryWnd, NULL, TRUE);
512 }
513 }
514
515 memcpy(win->back, oldwin->back, sizeof(win->back));
516 win->backIndex = oldwin->backIndex;
517
518 if (page)
519 {
520 num = sizeof(win->back) / sizeof(win->back[0]);
521 if (win->backIndex == num)
522 {
523 /* we're full, remove latest entry */
524 HLPFILE_FreeHlpFile(win->back[0]->file);
525 memmove(&win->back[0], &win->back[1],
526 (num - 1) * sizeof(win->back[0]));
527 win->backIndex--;
528 }
529 win->back[win->backIndex++] = page;
530 page->file->wRefCount++;
531 }
532 }
533 else
534 win->backIndex = win->histIndex = 0;
535
536 oldwin->histIndex = oldwin->backIndex = 0;
537 WINHELP_DeleteWindow(oldwin);
538 return TRUE;
539 }
540
541 /***********************************************************************
542 *
543 * WINHELP_CreateHelpWindow
544 */
545 BOOL WINHELP_CreateHelpWindow(HLPFILE_PAGE* page, HLPFILE_WINDOWINFO* wi,
546 int nCmdShow)
547 {
548 WINHELP_WINDOW *win, *oldwin;
549 HWND hWnd;
550 BOOL bPrimary;
551 BOOL bPopup;
552 LPSTR name;
553
554 bPrimary = !lstrcmpi(wi->name, "main");
555 bPopup = wi->win_style & WS_POPUP;
556
557 /* Initialize WINHELP_WINDOW struct */
558 win = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
559 sizeof(WINHELP_WINDOW) + strlen(wi->name) + 1);
560 if (!win) return FALSE;
561
562 win->next = Globals.win_list;
563 Globals.win_list = win;
564
565 name = (char*)win + sizeof(WINHELP_WINDOW);
566 lstrcpy(name, wi->name);
567 win->lpszName = name;
568
569 win->page = page;
570
571 win->hArrowCur = LoadCursorA(0, (LPSTR)IDC_ARROW);
572 win->hHandCur = LoadCursorA(0, (LPSTR)IDC_HAND);
573
574 win->info = wi;
575
576 Globals.active_win = win;
577
578 /* Initialize default pushbuttons */
579 if (bPrimary && page)
580 {
581 CHAR buffer[MAX_STRING_LEN];
582
583 LoadString(Globals.hInstance, STID_CONTENTS, buffer, sizeof(buffer));
584 MACRO_CreateButton("BTN_CONTENTS", buffer, "Contents()");
585 LoadString(Globals.hInstance, STID_SEARCH,buffer, sizeof(buffer));
586 MACRO_CreateButton("BTN_SEARCH", buffer, "Search()");
587 LoadString(Globals.hInstance, STID_BACK, buffer, sizeof(buffer));
588 MACRO_CreateButton("BTN_BACK", buffer, "Back()");
589 LoadString(Globals.hInstance, STID_HISTORY, buffer, sizeof(buffer));
590 MACRO_CreateButton("BTN_HISTORY", buffer, "History()");
591 LoadString(Globals.hInstance, STID_TOPICS, buffer, sizeof(buffer));
592 MACRO_CreateButton("BTN_TOPICS", buffer, "Finder()");
593 }
594
595 /* Initialize file specific pushbuttons */
596 if (!(wi->win_style & WS_POPUP) && page)
597 {
598 HLPFILE_MACRO *macro;
599 for (macro = page->file->first_macro; macro; macro = macro->next)
600 MACRO_ExecuteMacro(macro->lpszMacro);
601
602 for (macro = page->first_macro; macro; macro = macro->next)
603 MACRO_ExecuteMacro(macro->lpszMacro);
604 }
605
606 /* Reuse existing window */
607 if (!bPopup)
608 {
609 for (oldwin = win->next; oldwin; oldwin = oldwin->next)
610 {
611 if (!lstrcmpi(oldwin->lpszName, wi->name))
612 {
613 return WINHELP_ReuseWindow(win, oldwin, page, nCmdShow);
614 }
615 }
616 if (page)
617 {
618 win->histIndex = win->backIndex = 1;
619 win->history[0] = win->back[0] = page;
620 page->file->wRefCount += 2;
621 strcpy(wi->caption, page->file->lpszTitle);
622 }
623 }
624
625 hWnd = CreateWindow(bPopup ? TEXT_WIN_CLASS_NAME : MAIN_WIN_CLASS_NAME,
626 wi->caption,
627 bPrimary ? WS_OVERLAPPEDWINDOW : wi->win_style,
628 wi->origin.x, wi->origin.y, wi->size.cx, wi->size.cy,
629 NULL, bPrimary ? LoadMenu(Globals.hInstance, MAKEINTRESOURCE(MAIN_MENU)) : 0,
630 Globals.hInstance, win);
631
632 ShowWindow(hWnd, nCmdShow);
633 UpdateWindow(hWnd);
634
635 return TRUE;
636 }
637
638 /***********************************************************************
639 *
640 * WINHELP_CreateHelpWindowByHash
641 */
642 BOOL WINHELP_CreateHelpWindowByHash(HLPFILE* hlpfile, LONG lHash,
643 HLPFILE_WINDOWINFO* wi, int nCmdShow)
644 {
645 HLPFILE_PAGE* page = NULL;
646
647 if (hlpfile)
648 page = lHash ? HLPFILE_PageByHash(hlpfile, lHash) :
649 HLPFILE_Contents(hlpfile);
650 if (page) page->file->wRefCount++;
651 return WINHELP_CreateHelpWindow(page, wi, nCmdShow);
652 }
653
654 /***********************************************************************
655 *
656 * WINHELP_CreateHelpWindowByMap
657 */
658 BOOL WINHELP_CreateHelpWindowByMap(HLPFILE* hlpfile, LONG lMap,
659 HLPFILE_WINDOWINFO* wi, int nCmdShow)
660 {
661 HLPFILE_PAGE* page = NULL;
662
663 page = HLPFILE_PageByMap(hlpfile, lMap);
664 if (page) page->file->wRefCount++;
665 return WINHELP_CreateHelpWindow(page, wi, nCmdShow);
666 }
667
668 /***********************************************************************
669 *
670 * WINHELP_MainWndProc
671 */
672 static LRESULT CALLBACK WINHELP_MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
673 {
674 WINHELP_WINDOW *win;
675 WINHELP_BUTTON *button;
676 RECT rect, button_box_rect;
677 INT text_top, curPos, min, max, dy, keyDelta;
678
679 WINHELP_CheckPopup(msg);
680
681 switch (msg)
682 {
683 case WM_NCCREATE:
684 win = (WINHELP_WINDOW*) ((LPCREATESTRUCT) lParam)->lpCreateParams;
685 SetWindowLong(hWnd, 0, (LONG) win);
686 win->hMainWnd = hWnd;
687 break;
688
689 case WM_CREATE:
690 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
691
692 /* Create button box and text Window */
693 CreateWindow(BUTTON_BOX_WIN_CLASS_NAME, "", WS_CHILD | WS_VISIBLE,
694 0, 0, 0, 0, hWnd, 0, Globals.hInstance, win);
695
696 CreateWindow(TEXT_WIN_CLASS_NAME, "", WS_CHILD | WS_VISIBLE,
697 0, 0, 0, 0, hWnd, 0, Globals.hInstance, win);
698
699 /* Fall through */
700 case WM_USER:
701 case WM_WINDOWPOSCHANGED:
702 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
703 GetClientRect(hWnd, &rect);
704
705 /* Update button box and text Window */
706 SetWindowPos(win->hButtonBoxWnd, HWND_TOP,
707 rect.left, rect.top,
708 rect.right - rect.left,
709 rect.bottom - rect.top, 0);
710
711 GetWindowRect(win->hButtonBoxWnd, &button_box_rect);
712 text_top = rect.top + button_box_rect.bottom - button_box_rect.top;
713
714 SetWindowPos(win->hTextWnd, HWND_TOP,
715 rect.left, text_top,
716 rect.right - rect.left,
717 rect.bottom - text_top, 0);
718
719 break;
720
721 case WM_COMMAND:
722 Globals.active_win = win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
723 switch (wParam)
724 {
725 /* Menu FILE */
726 case MNID_FILE_OPEN: MACRO_FileOpen(); break;
727 case MNID_FILE_PRINT: MACRO_Print(); break;
728 case MNID_FILE_SETUP: MACRO_PrinterSetup(); break;
729 case MNID_FILE_EXIT: MACRO_Exit(); break;
730
731 /* Menu EDIT */
732 case MNID_EDIT_COPYDLG: MACRO_CopyDialog(); break;
733 case MNID_EDIT_ANNOTATE:MACRO_Annotate(); break;
734
735 /* Menu Bookmark */
736 case MNID_BKMK_DEFINE: MACRO_BookmarkDefine(); break;
737
738 /* Menu Help */
739 case MNID_HELP_HELPON: MACRO_HelpOn(); break;
740 case MNID_HELP_HELPTOP: MACRO_HelpOnTop(); break;
741 case MNID_HELP_ABOUT: MACRO_About(); break;
742 case MNID_HELP_WINE: ShellAbout(hWnd, "WINE", "Help", 0); break;
743
744 default:
745 /* Buttons */
746 for (button = win->first_button; button; button = button->next)
747 if (wParam == button->wParam) break;
748 if (button)
749 MACRO_ExecuteMacro(button->lpszMacro);
750 else
751 WINHELP_MessageBoxIDS(STID_NOT_IMPLEMENTED, 0x121, MB_OK);
752 break;
753 }
754 break;
755 case WM_DESTROY:
756 if (Globals.hPopupWnd) DestroyWindow(Globals.hPopupWnd);
757 break;
758 case WM_COPYDATA:
759 return WINHELP_HandleCommand((HWND)wParam, lParam);
760
761 case WM_KEYDOWN:
762 keyDelta = 0;
763
764 switch (wParam)
765 {
766 case VK_UP:
767 case VK_DOWN:
768 keyDelta = GetSystemMetrics(SM_CXVSCROLL);
769 if (wParam == VK_UP)
770 keyDelta = -keyDelta;
771
772 case VK_PRIOR:
773 case VK_NEXT:
774 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
775 curPos = GetScrollPos(win->hTextWnd, SB_VERT);
776 GetScrollRange(win->hTextWnd, SB_VERT, &min, &max);
777
778 if (keyDelta == 0)
779 {
780 GetClientRect(win->hTextWnd, &rect);
781 keyDelta = (rect.bottom - rect.top) / 2;
782 if (wParam == VK_PRIOR)
783 keyDelta = -keyDelta;
784 }
785
786 curPos += keyDelta;
787 if (curPos > max)
788 curPos = max;
789 else if (curPos < min)
790 curPos = min;
791
792 dy = GetScrollPos(win->hTextWnd, SB_VERT) - curPos;
793 SetScrollPos(win->hTextWnd, SB_VERT, curPos, TRUE);
794 ScrollWindow(win->hTextWnd, 0, dy, NULL, NULL);
795 UpdateWindow(win->hTextWnd);
796 return 0;
797
798 case VK_ESCAPE:
799 MACRO_Exit();
800 return 0;
801 }
802 break;
803 }
804 return DefWindowProc(hWnd, msg, wParam, lParam);
805 }
806
807 /***********************************************************************
808 *
809 * WINHELP_ButtonBoxWndProc
810 */
811 static LRESULT CALLBACK WINHELP_ButtonBoxWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
812 {
813 WINDOWPOS *winpos;
814 WINHELP_WINDOW *win;
815 WINHELP_BUTTON *button;
816 SIZE button_size;
817 INT x, y;
818
819 WINHELP_CheckPopup(msg);
820
821 switch (msg)
822 {
823 case WM_NCCREATE:
824 win = (WINHELP_WINDOW*) ((LPCREATESTRUCT) lParam)->lpCreateParams;
825 SetWindowLong(hWnd, 0, (LONG) win);
826 win->hButtonBoxWnd = hWnd;
827 break;
828
829 case WM_WINDOWPOSCHANGING:
830 winpos = (WINDOWPOS*) lParam;
831 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
832
833 /* Update buttons */
834 button_size.cx = 0;
835 button_size.cy = 0;
836 for (button = win->first_button; button; button = button->next)
837 {
838 HDC hDc;
839 SIZE textsize;
840 if (!button->hWnd)
841 {
842 button->hWnd = CreateWindow(STRING_BUTTON, button->lpszName,
843 WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
844 0, 0, 0, 0,
845 hWnd, (HMENU) button->wParam,
846 Globals.hInstance, 0);
847 if (button->hWnd) {
848 if (Globals.button_proc == NULL)
849 Globals.button_proc = (WNDPROC) GetWindowLongPtr(button->hWnd, GWLP_WNDPROC);
850 SetWindowLongPtr(button->hWnd, GWLP_WNDPROC, (LONG_PTR) WINHELP_ButtonWndProc);
851 }
852 }
853 hDc = GetDC(button->hWnd);
854 GetTextExtentPoint(hDc, button->lpszName,
855 lstrlen(button->lpszName), &textsize);
856 ReleaseDC(button->hWnd, hDc);
857
858 button_size.cx = max(button_size.cx, textsize.cx + BUTTON_CX);
859 button_size.cy = max(button_size.cy, textsize.cy + BUTTON_CY);
860 }
861
862 x = 0;
863 y = 0;
864 for (button = win->first_button; button; button = button->next)
865 {
866 SetWindowPos(button->hWnd, HWND_TOP, x, y, button_size.cx, button_size.cy, 0);
867
868 if (x + 2 * button_size.cx <= winpos->cx)
869 x += button_size.cx;
870 else
871 x = 0, y += button_size.cy;
872 }
873 winpos->cy = y + (x ? button_size.cy : 0);
874 break;
875
876 case WM_COMMAND:
877 SendMessage(GetParent(hWnd), msg, wParam, lParam);
878 break;
879
880 case WM_KEYDOWN:
881 switch (wParam)
882 {
883 case VK_UP:
884 case VK_DOWN:
885 case VK_PRIOR:
886 case VK_NEXT:
887 case VK_ESCAPE:
888 return SendMessage(GetParent(hWnd), msg, wParam, lParam);
889 }
890 break;
891 }
892
893 return DefWindowProc(hWnd, msg, wParam, lParam);
894 }
895
896 /***********************************************************************
897 *
898 * WINHELP_ButtonWndProc
899 */
900 static LRESULT CALLBACK WINHELP_ButtonWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
901 {
902 if (msg == WM_KEYDOWN)
903 {
904 switch (wParam)
905 {
906 case VK_UP:
907 case VK_DOWN:
908 case VK_PRIOR:
909 case VK_NEXT:
910 case VK_ESCAPE:
911 return SendMessage(GetParent(hWnd), msg, wParam, lParam);
912 }
913 }
914
915 return CallWindowProc(Globals.button_proc, hWnd, msg, wParam, lParam);
916 }
917
918 /***********************************************************************
919 *
920 * WINHELP_TextWndProc
921 */
922 static LRESULT CALLBACK WINHELP_TextWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
923 {
924 WINHELP_WINDOW *win;
925 WINHELP_LINE *line;
926 WINHELP_LINE_PART *part;
927 WINDOWPOS *winpos;
928 PAINTSTRUCT ps;
929 HDC hDc;
930 POINT mouse;
931 INT scroll_pos;
932 HWND hPopupWnd;
933 BOOL bExit;
934
935 if (msg != WM_LBUTTONDOWN)
936 WINHELP_CheckPopup(msg);
937
938 switch (msg)
939 {
940 case WM_NCCREATE:
941 win = (WINHELP_WINDOW*) ((LPCREATESTRUCT) lParam)->lpCreateParams;
942 SetWindowLong(hWnd, 0, (LONG) win);
943 win->hTextWnd = hWnd;
944 win->hBrush = CreateSolidBrush(win->info->sr_color);
945 if (win->info->win_style & WS_POPUP) Globals.hPopupWnd = win->hMainWnd = hWnd;
946 WINHELP_InitFonts(hWnd);
947 break;
948
949 case WM_CREATE:
950 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
951
952 /* Calculate vertical size and position of a popup window */
953 if (win->info->win_style & WS_POPUP)
954 {
955 POINT origin;
956 RECT old_window_rect;
957 RECT old_client_rect;
958 SIZE old_window_size;
959 SIZE old_client_size;
960 SIZE new_client_size;
961 SIZE new_window_size;
962
963 GetWindowRect(hWnd, &old_window_rect);
964 origin.x = old_window_rect.left;
965 origin.y = old_window_rect.top;
966 old_window_size.cx = old_window_rect.right - old_window_rect.left;
967 old_window_size.cy = old_window_rect.bottom - old_window_rect.top;
968
969 GetClientRect(hWnd, &old_client_rect);
970 old_client_size.cx = old_client_rect.right - old_client_rect.left;
971 old_client_size.cy = old_client_rect.bottom - old_client_rect.top;
972
973 new_client_size = old_client_size;
974 WINHELP_SplitLines(hWnd, &new_client_size);
975
976 if (origin.y + POPUP_YDISTANCE + new_client_size.cy <= GetSystemMetrics(SM_CYSCREEN))
977 origin.y += POPUP_YDISTANCE;
978 else
979 origin.y -= POPUP_YDISTANCE + new_client_size.cy;
980
981 new_window_size.cx = old_window_size.cx - old_client_size.cx + new_client_size.cx;
982 new_window_size.cy = old_window_size.cy - old_client_size.cy + new_client_size.cy;
983
984 win->hShadowWnd =
985 CreateWindow(SHADOW_WIN_CLASS_NAME, "", WS_POPUP,
986 origin.x + SHADOW_DX, origin.y + SHADOW_DY,
987 new_window_size.cx, new_window_size.cy,
988 0, 0, Globals.hInstance, 0);
989
990 SetWindowPos(hWnd, HWND_TOP, origin.x, origin.y,
991 new_window_size.cx, new_window_size.cy,
992 0);
993 SetWindowPos(win->hShadowWnd, hWnd, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
994 ShowWindow(win->hShadowWnd, SW_NORMAL);
995 SetActiveWindow(hWnd);
996 }
997 break;
998
999 case WM_WINDOWPOSCHANGED:
1000 winpos = (WINDOWPOS*) lParam;
1001
1002 if (!(winpos->flags & SWP_NOSIZE)) WINHELP_SetupText(hWnd);
1003 break;
1004
1005 case WM_MOUSEWHEEL:
1006 {
1007 int wheelDelta = 0;
1008 UINT scrollLines = 3;
1009 int curPos = GetScrollPos(hWnd, SB_VERT);
1010 int min, max;
1011
1012 GetScrollRange(hWnd, SB_VERT, &min, &max);
1013
1014 SystemParametersInfo(SPI_GETWHEELSCROLLLINES,0, &scrollLines, 0);
1015 if (wParam & (MK_SHIFT | MK_CONTROL))
1016 return DefWindowProc(hWnd, msg, wParam, lParam);
1017 wheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1018 if (abs(wheelDelta) >= WHEEL_DELTA && scrollLines) {
1019 int dy;
1020
1021 curPos += wheelDelta;
1022 if (curPos > max)
1023 curPos = max;
1024 else if (curPos < min)
1025 curPos = min;
1026
1027 dy = GetScrollPos(hWnd, SB_VERT) - curPos;
1028 SetScrollPos(hWnd, SB_VERT, curPos, TRUE);
1029 ScrollWindow(hWnd, 0, dy, NULL, NULL);
1030 UpdateWindow(hWnd);
1031 }
1032 }
1033 break;
1034
1035 case WM_VSCROLL:
1036 {
1037 BOOL update = TRUE;
1038 RECT rect;
1039 INT Min, Max;
1040 INT CurPos = GetScrollPos(hWnd, SB_VERT);
1041 INT dy;
1042
1043 GetScrollRange(hWnd, SB_VERT, &Min, &Max);
1044 GetClientRect(hWnd, &rect);
1045
1046 switch (wParam & 0xffff)
1047 {
1048 case SB_THUMBTRACK:
1049 case SB_THUMBPOSITION: CurPos = wParam >> 16; break;
1050 case SB_TOP: CurPos = Min; break;
1051 case SB_BOTTOM: CurPos = Max; break;
1052 case SB_PAGEUP: CurPos -= (rect.bottom - rect.top) / 2; break;
1053 case SB_PAGEDOWN: CurPos += (rect.bottom - rect.top) / 2; break;
1054 case SB_LINEUP: CurPos -= GetSystemMetrics(SM_CXVSCROLL); break;
1055 case SB_LINEDOWN: CurPos += GetSystemMetrics(SM_CXVSCROLL); break;
1056 default: update = FALSE;
1057 }
1058 if (update)
1059 {
1060 if (CurPos > Max)
1061 CurPos = Max;
1062 else if (CurPos < Min)
1063 CurPos = Min;
1064 dy = GetScrollPos(hWnd, SB_VERT) - CurPos;
1065 SetScrollPos(hWnd, SB_VERT, CurPos, TRUE);
1066 ScrollWindow(hWnd, 0, dy, NULL, NULL);
1067 UpdateWindow(hWnd);
1068 }
1069 }
1070 break;
1071
1072 case WM_PAINT:
1073 hDc = BeginPaint(hWnd, &ps);
1074 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1075 scroll_pos = GetScrollPos(hWnd, SB_VERT);
1076
1077 /* No DPtoLP needed - MM_TEXT map mode */
1078 if (ps.fErase) FillRect(hDc, &ps.rcPaint, win->hBrush);
1079 for (line = win->first_line; line; line = line->next)
1080 {
1081 for (part = &line->first_part; part; part = part->next)
1082 {
1083 switch (part->cookie)
1084 {
1085 case hlp_line_part_text:
1086 SelectObject(hDc, part->u.text.hFont);
1087 SetTextColor(hDc, part->u.text.color);
1088 SetBkColor(hDc, win->info->sr_color);
1089 TextOut(hDc, part->rect.left, part->rect.top - scroll_pos,
1090 part->u.text.lpsText, part->u.text.wTextLen);
1091 if (part->u.text.wUnderline)
1092 {
1093 HPEN hPen;
1094
1095 switch (part->u.text.wUnderline)
1096 {
1097 case 1: /* simple */
1098 case 2: /* double */
1099 hPen = CreatePen(PS_SOLID, 1, part->u.text.color);
1100 break;
1101 case 3: /* dotted */
1102 hPen = CreatePen(PS_DOT, 1, part->u.text.color);
1103 break;
1104 default:
1105 WINE_FIXME("Unknow underline type\n");
1106 continue;
1107 }
1108
1109 SelectObject(hDc, hPen);
1110 MoveToEx(hDc, part->rect.left, part->rect.bottom - scroll_pos - 1, NULL);
1111 LineTo(hDc, part->rect.right, part->rect.bottom - scroll_pos - 1);
1112 if (part->u.text.wUnderline == 2)
1113 {
1114 MoveToEx(hDc, part->rect.left, part->rect.bottom - scroll_pos + 1, NULL);
1115 LineTo(hDc, part->rect.right, part->rect.bottom - scroll_pos + 1);
1116 }
1117 DeleteObject(hPen);
1118 }
1119 break;
1120 case hlp_line_part_bitmap:
1121 {
1122 HDC hMemDC;
1123
1124 hMemDC = CreateCompatibleDC(hDc);
1125 SelectObject(hMemDC, part->u.bitmap.hBitmap);
1126 BitBlt(hDc, part->rect.left, part->rect.top - scroll_pos,
1127 part->rect.right - part->rect.left, part->rect.bottom - part->rect.top,
1128 hMemDC, 0, 0, SRCCOPY);
1129 DeleteDC(hMemDC);
1130 }
1131 break;
1132 case hlp_line_part_metafile:
1133 {
1134 HDC hMemDC;
1135 HBITMAP hBitmap;
1136 SIZE sz;
1137 RECT rc;
1138
1139 sz.cx = part->rect.right - part->rect.left;
1140 sz.cy = part->rect.bottom - part->rect.top;
1141 hMemDC = CreateCompatibleDC(hDc);
1142 hBitmap = CreateCompatibleBitmap(hDc, sz.cx, sz.cy);
1143 SelectObject(hMemDC, hBitmap);
1144 SelectObject(hMemDC, win->hBrush);
1145 rc.left = 0;
1146 rc.top = 0;
1147 rc.right = sz.cx;
1148 rc.bottom = sz.cy;
1149 FillRect(hMemDC, &rc, win->hBrush);
1150 SetMapMode(hMemDC, part->u.metafile.mm);
1151 SetWindowExtEx(hMemDC, sz.cx, sz.cy, 0);
1152 SetViewportExtEx(hMemDC, sz.cx, sz.cy, 0);
1153 SetWindowOrgEx(hMemDC, 0, 0, 0);
1154 SetViewportOrgEx(hMemDC, 0, 0, 0);
1155 PlayMetaFile(hMemDC, part->u.metafile.hMetaFile);
1156 SetMapMode(hMemDC, MM_TEXT);
1157 SetWindowOrgEx(hMemDC, 0, 0, 0);
1158 SetViewportOrgEx(hMemDC, 0, 0, 0);
1159 BitBlt(hDc, part->rect.left, part->rect.top - scroll_pos,
1160 sz.cx, sz.cy, hMemDC, 0, 0, SRCCOPY);
1161 DeleteDC(hMemDC);
1162 DeleteObject(hBitmap);
1163 }
1164 break;
1165 }
1166 }
1167 }
1168
1169 EndPaint(hWnd, &ps);
1170 break;
1171
1172 case WM_MOUSEMOVE:
1173 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1174
1175 if (WINHELP_IsOverLink(win, wParam, lParam))
1176 SetCursor(win->hHandCur); /* set to hand pointer cursor to indicate a link */
1177 else
1178 SetCursor(win->hArrowCur); /* set to hand pointer cursor to indicate a link */
1179
1180 break;
1181
1182 case WM_LBUTTONDOWN:
1183 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1184
1185 hPopupWnd = Globals.hPopupWnd;
1186 Globals.hPopupWnd = 0;
1187
1188 part = WINHELP_IsOverLink(win, wParam, lParam);
1189 if (part)
1190 {
1191 HLPFILE* hlpfile;
1192 HLPFILE_WINDOWINFO* wi;
1193
1194 mouse.x = (short)LOWORD(lParam);
1195 mouse.y = (short)HIWORD(lParam);
1196
1197 if (part->link) switch (part->link->cookie)
1198 {
1199 case hlp_link_link:
1200 hlpfile = WINHELP_LookupHelpFile(part->link->lpszString);
1201 if (part->link->window == -1)
1202 wi = win->info;
1203 else if ((part->link->window >= 0) && (part->link->window < hlpfile->numWindows))
1204 wi = &hlpfile->windows[part->link->window];
1205 else
1206 {
1207 WINE_WARN("link to window %d/%d\n", part->link->window, hlpfile->numWindows);
1208 break;
1209 }
1210 WINHELP_CreateHelpWindowByHash(hlpfile, part->link->lHash, wi,
1211 SW_NORMAL);
1212 break;
1213 case hlp_link_popup:
1214 hlpfile = WINHELP_LookupHelpFile(part->link->lpszString);
1215 if (hlpfile) WINHELP_CreateHelpWindowByHash(hlpfile, part->link->lHash,
1216 WINHELP_GetPopupWindowInfo(hlpfile, hWnd, &mouse),
1217 SW_NORMAL);
1218 break;
1219 case hlp_link_macro:
1220 MACRO_ExecuteMacro(part->link->lpszString);
1221 break;
1222 default:
1223 WINE_FIXME("Unknown link cookie %d\n", part->link->cookie);
1224 }
1225 }
1226
1227 if (hPopupWnd)
1228 DestroyWindow(hPopupWnd);
1229 break;
1230
1231 case WM_NCDESTROY:
1232 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1233
1234 if (hWnd == Globals.hPopupWnd) Globals.hPopupWnd = 0;
1235
1236 bExit = (Globals.wVersion >= 4 && !lstrcmpi(win->lpszName, "main"));
1237 DeleteObject(win->hBrush);
1238
1239 WINHELP_DeleteWindow(win);
1240
1241 if (bExit) MACRO_Exit();
1242
1243 if (!Globals.win_list)
1244 PostQuitMessage(0);
1245 break;
1246 }
1247
1248 return DefWindowProc(hWnd, msg, wParam, lParam);
1249 }
1250
1251 /******************************************************************
1252 * WINHELP_HistoryWndProc
1253 *
1254 *
1255 */
1256 static LRESULT CALLBACK WINHELP_HistoryWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1257 {
1258 WINHELP_WINDOW* win;
1259 PAINTSTRUCT ps;
1260 HDC hDc;
1261 TEXTMETRIC tm;
1262 unsigned int i;
1263 RECT r;
1264
1265 switch (msg)
1266 {
1267 case WM_NCCREATE:
1268 win = (WINHELP_WINDOW*)((LPCREATESTRUCT)lParam)->lpCreateParams;
1269 SetWindowLong(hWnd, 0, (LONG)win);
1270 win->hHistoryWnd = hWnd;
1271 break;
1272 case WM_CREATE:
1273 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1274 hDc = GetDC(hWnd);
1275 GetTextMetrics(hDc, &tm);
1276 GetWindowRect(hWnd, &r);
1277
1278 r.right = r.left + 30 * tm.tmAveCharWidth;
1279 r.bottom = r.top + (sizeof(win->history) / sizeof(win->history[0])) * tm.tmHeight;
1280 AdjustWindowRect(&r, GetWindowLong(hWnd, GWL_STYLE), FALSE);
1281 if (r.left < 0) {r.right -= r.left; r.left = 0;}
1282 if (r.top < 0) {r.bottom -= r.top; r.top = 0;}
1283
1284 MoveWindow(hWnd, r.left, r.top, r.right, r.bottom, TRUE);
1285 ReleaseDC(hWnd, hDc);
1286 break;
1287 case WM_LBUTTONDOWN:
1288 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1289 hDc = GetDC(hWnd);
1290 GetTextMetrics(hDc, &tm);
1291 i = HIWORD(lParam) / tm.tmHeight;
1292 if (i < win->histIndex)
1293 WINHELP_CreateHelpWindow(win->history[i], win->info, SW_SHOW);
1294 ReleaseDC(hWnd, hDc);
1295 break;
1296 case WM_PAINT:
1297 hDc = BeginPaint(hWnd, &ps);
1298 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1299 GetTextMetrics(hDc, &tm);
1300
1301 for (i = 0; i < win->histIndex; i++)
1302 {
1303 TextOut(hDc, 0, i * tm.tmHeight, win->history[i]->lpszTitle,
1304 strlen(win->history[i]->lpszTitle));
1305 }
1306 EndPaint(hWnd, &ps);
1307 break;
1308 case WM_DESTROY:
1309 win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1310 if (hWnd == win->hHistoryWnd)
1311 win->hHistoryWnd = 0;
1312 break;
1313 }
1314 return DefWindowProc(hWnd, msg, wParam, lParam);
1315 }
1316
1317 /***********************************************************************
1318 *
1319 * WINHELP_ShadowWndProc
1320 */
1321 static LRESULT CALLBACK WINHELP_ShadowWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1322 {
1323 WINHELP_CheckPopup(msg);
1324 return DefWindowProc(hWnd, msg, wParam, lParam);
1325 }
1326
1327 /***********************************************************************
1328 *
1329 * SetupText
1330 */
1331 static void WINHELP_SetupText(HWND hWnd)
1332 {
1333 HDC hDc = GetDC(hWnd);
1334 RECT rect;
1335 SIZE newsize;
1336
1337 ShowScrollBar(hWnd, SB_VERT, FALSE);
1338 if (!WINHELP_SplitLines(hWnd, NULL))
1339 {
1340 ShowScrollBar(hWnd, SB_VERT, TRUE);
1341 GetClientRect(hWnd, &rect);
1342
1343 WINHELP_SplitLines(hWnd, &newsize);
1344 SetScrollRange(hWnd, SB_VERT, 0, rect.top + newsize.cy - rect.bottom, TRUE);
1345 }
1346 else
1347 {
1348 SetScrollPos(hWnd, SB_VERT, 0, FALSE);
1349 SetScrollRange(hWnd, SB_VERT, 0, 0, FALSE);
1350 }
1351
1352 ReleaseDC(hWnd, hDc);
1353 }
1354
1355 /***********************************************************************
1356 *
1357 * WINHELP_AppendText
1358 */
1359 static BOOL WINHELP_AppendText(WINHELP_LINE ***linep, WINHELP_LINE_PART ***partp,
1360 LPSIZE space, LPSIZE textsize,
1361 INT *line_ascent, INT ascent,
1362 LPCSTR text, UINT textlen,
1363 HFONT font, COLORREF color, HLPFILE_LINK *link,
1364 unsigned underline)
1365 {
1366 WINHELP_LINE *line;
1367 WINHELP_LINE_PART *part;
1368 LPSTR ptr;
1369
1370 if (!*partp) /* New line */
1371 {
1372 *line_ascent = ascent;
1373
1374 line = HeapAlloc(GetProcessHeap(), 0,
1375 sizeof(WINHELP_LINE) + textlen);
1376 if (!line) return FALSE;
1377
1378 line->next = 0;
1379 part = &line->first_part;
1380 ptr = (char*)line + sizeof(WINHELP_LINE);
1381
1382 line->rect.top = (**linep ? (**linep)->rect.bottom : 0) + space->cy;
1383 line->rect.bottom = line->rect.top;
1384 line->rect.left = space->cx;
1385 line->rect.right = space->cx;
1386
1387 if (**linep) *linep = &(**linep)->next;
1388 **linep = line;
1389 space->cy = 0;
1390 }
1391 else /* Same line */
1392 {
1393 line = **linep;
1394
1395 if (*line_ascent < ascent)
1396 {
1397 WINHELP_LINE_PART *p;
1398 for (p = &line->first_part; p; p = p->next)
1399 {
1400 p->rect.top += ascent - *line_ascent;
1401 p->rect.bottom += ascent - *line_ascent;
1402 }
1403 line->rect.bottom += ascent - *line_ascent;
1404 *line_ascent = ascent;
1405 }
1406
1407 part = HeapAlloc(GetProcessHeap(), 0,
1408 sizeof(WINHELP_LINE_PART) + textlen);
1409 if (!part) return FALSE;
1410 **partp = part;
1411 ptr = (char*)part + sizeof(WINHELP_LINE_PART);
1412 }
1413
1414 memcpy(ptr, text, textlen);
1415 part->cookie = hlp_line_part_text;
1416 part->rect.left = line->rect.right + (*partp ? space->cx : 0);
1417 part->rect.right = part->rect.left + textsize->cx;
1418 line->rect.right = part->rect.right;
1419 part->rect.top =
1420 ((*partp) ? line->rect.top : line->rect.bottom) + *line_ascent - ascent;
1421 part->rect.bottom = part->rect.top + textsize->cy;
1422 line->rect.bottom = max(line->rect.bottom, part->rect.bottom);
1423 part->u.text.lpsText = ptr;
1424 part->u.text.wTextLen = textlen;
1425 part->u.text.hFont = font;
1426 part->u.text.color = color;
1427 part->u.text.wUnderline = underline;
1428
1429 WINE_TRACE("Appended text '%*.*s'[%d] @ (%d,%d-%d,%d)\n",
1430 part->u.text.wTextLen,
1431 part->u.text.wTextLen,
1432 part->u.text.lpsText,
1433 part->u.text.wTextLen,
1434 part->rect.left, part->rect.top, part->rect.right, part->rect.bottom);
1435
1436 part->link = link;
1437 if (link) link->wRefCount++;
1438
1439 part->next = 0;
1440 *partp = &part->next;
1441
1442 space->cx = 0;
1443
1444 return TRUE;
1445 }
1446
1447 /***********************************************************************
1448 *
1449 * WINHELP_AppendGfxObject
1450 */
1451 static WINHELP_LINE_PART* WINHELP_AppendGfxObject(WINHELP_LINE ***linep, WINHELP_LINE_PART ***partp,
1452 LPSIZE space, LPSIZE gfxSize,
1453 HLPFILE_LINK *link, unsigned pos)
1454 {
1455 WINHELP_LINE *line;
1456 WINHELP_LINE_PART *part;
1457 LPSTR ptr;
1458
1459 if (!*partp || pos == 1) /* New line */
1460 {
1461 line = HeapAlloc(GetProcessHeap(), 0, sizeof(WINHELP_LINE));
1462 if (!line) return NULL;
1463
1464 line->next = NULL;
1465 part = &line->first_part;
1466
1467 line->rect.top = (**linep ? (**linep)->rect.bottom : 0) + space->cy;
1468 line->rect.bottom = line->rect.top;
1469 line->rect.left = space->cx;
1470 line->rect.right = space->cx;
1471
1472 if (**linep) *linep = &(**linep)->next;
1473 **linep = line;
1474 space->cy = 0;
1475 ptr = (char*)line + sizeof(WINHELP_LINE);
1476 }
1477 else /* Same line */
1478 {
1479 if (pos == 2) WINE_FIXME("Left alignment not handled\n");
1480 line = **linep;
1481
1482 part = HeapAlloc(GetProcessHeap(), 0, sizeof(WINHELP_LINE_PART));
1483 if (!part) return NULL;
1484 **partp = part;
1485 ptr = (char*)part + sizeof(WINHELP_LINE_PART);
1486 }
1487
1488 /* part->cookie should be set by caller (image or metafile) */
1489 part->rect.left = line->rect.right + (*partp ? space->cx : 0);
1490 part->rect.right = part->rect.left + gfxSize->cx;
1491 line->rect.right = part->rect.right;
1492 part->rect.top = (*partp) ? line->rect.top : line->rect.bottom;
1493 part->rect.bottom = part->rect.top + gfxSize->cy;
1494 line->rect.bottom = max(line->rect.bottom, part->rect.bottom);
1495
1496 WINE_TRACE("Appended gfx @ (%d,%d-%d,%d)\n",
1497 part->rect.left, part->rect.top, part->rect.right, part->rect.bottom);
1498
1499 part->link = link;
1500 if (link) link->wRefCount++;
1501
1502 part->next = NULL;
1503 *partp = &part->next;
1504
1505 space->cx = 0;
1506
1507 return part;
1508 }
1509
1510
1511 /***********************************************************************
1512 *
1513 * WINHELP_SplitLines
1514 */
1515 static BOOL WINHELP_SplitLines(HWND hWnd, LPSIZE newsize)
1516 {
1517 WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1518 HLPFILE_PARAGRAPH *p;
1519 WINHELP_LINE **line = &win->first_line;
1520 WINHELP_LINE_PART **part = 0;
1521 INT line_ascent = 0;
1522 SIZE space;
1523 RECT rect;
1524 HDC hDc;
1525
1526 if (newsize) newsize->cx = newsize->cy = 0;
1527
1528 if (!win->page) return TRUE;
1529
1530 WINHELP_DeleteLines(win);
1531
1532 GetClientRect(hWnd, &rect);
1533
1534 rect.top += INTERNAL_BORDER_WIDTH;
1535 rect.left += INTERNAL_BORDER_WIDTH;
1536 rect.right -= INTERNAL_BORDER_WIDTH;
1537 rect.bottom -= INTERNAL_BORDER_WIDTH;
1538
1539 space.cy = rect.top;
1540 space.cx = rect.left;
1541
1542 hDc = GetDC(hWnd);
1543
1544 for (p = win->page->first_paragraph; p; p = p->next)
1545 {
1546 switch (p->cookie)
1547 {
1548 case para_normal_text:
1549 case para_debug_text:
1550 {
1551 TEXTMETRIC tm;
1552 SIZE textsize = {0, 0};
1553 LPCSTR text = p->u.text.lpszText;
1554 UINT indent = 0;
1555 UINT len = strlen(text);
1556 unsigned underline = 0;
1557
1558 HFONT hFont = 0;
1559 COLORREF color = RGB(0, 0, 0);
1560
1561 if (p->u.text.wFont < win->page->file->numFonts)
1562 {
1563 HLPFILE* hlpfile = win->page->file;
1564
1565 if (!hlpfile->fonts[p->u.text.wFont].hFont)
1566 hlpfile->fonts[p->u.text.wFont].hFont = CreateFontIndirect(&hlpfile->fonts[p->u.text.wFont].LogFont);
1567 hFont = hlpfile->fonts[p->u.text.wFont].hFont;
1568 color = hlpfile->fonts[p->u.text.wFont].color;
1569 }
1570 else
1571 {
1572 UINT wFont = (p->u.text.wFont < win->fonts_len) ? p->u.text.wFont : 0;
1573
1574 hFont = win->fonts[wFont];
1575 }
1576
1577 if (p->link && p->link->bClrChange)
1578 {
1579 underline = (p->link->cookie == hlp_link_popup) ? 3 : 1;
1580 color = RGB(0, 0x80, 0);
1581 }
1582 if (p->cookie == para_debug_text) color = RGB(0xff, 0, 0);
1583
1584 SelectObject(hDc, hFont);
1585
1586 GetTextMetrics(hDc, &tm);
1587
1588 if (p->u.text.wIndent)
1589 {
1590 indent = p->u.text.wIndent * 5 * tm.tmAveCharWidth;
1591 if (!part)
1592 space.cx = rect.left + indent - 2 * tm.tmAveCharWidth;
1593 }
1594
1595 if (p->u.text.wVSpace)
1596 {
1597 part = 0;
1598 space.cx = rect.left + indent;
1599 space.cy += (p->u.text.wVSpace - 1) * tm.tmHeight;
1600 }
1601
1602 if (p->u.text.wHSpace)
1603 {
1604 space.cx += p->u.text.wHSpace * 2 * tm.tmAveCharWidth;
1605 }
1606
1607 WINE_TRACE("splitting text %s\n", text);
1608
1609 while (len)
1610 {
1611 INT free_width = rect.right - (part ? (*line)->rect.right : rect.left) - space.cx;
1612 UINT low = 0, curr = len, high = len, textlen = 0;
1613
1614 if (free_width > 0)
1615 {
1616 while (1)
1617 {
1618 GetTextExtentPoint(hDc, text, curr, &textsize);
1619
1620 if (textsize.cx <= free_width) low = curr;
1621 else high = curr;
1622
1623 if (high <= low + 1) break;
1624
1625 if (textsize.cx) curr = (curr * free_width) / textsize.cx;
1626 if (curr <= low) curr = low + 1;
1627 else if (curr >= high) curr = high - 1;
1628 }
1629 textlen = low;
1630 while (textlen && text[textlen] && text[textlen] != ' ') textlen--;
1631 }
1632 if (!part && !textlen) textlen = max(low, 1);
1633
1634 if (free_width <= 0 || !textlen)
1635 {
1636 part = 0;
1637 space.cx = rect.left + indent;
1638 space.cx = min(space.cx, rect.right - rect.left - 1);
1639 continue;
1640 }
1641
1642 WINE_TRACE("\t => %d %*s\n", textlen, textlen, text);
1643
1644 if (!WINHELP_AppendText(&line, &part, &space, &textsize,
1645 &line_ascent, tm.tmAscent,
1646 text, textlen, hFont, color, p->link, underline) ||
1647 (!newsize && (*line)->rect.bottom > rect.bottom))
1648 {
1649 ReleaseDC(hWnd, hDc);
1650 return FALSE;
1651 }
1652
1653 if (newsize)
1654 newsize->cx = max(newsize->cx, (*line)->rect.right + INTERNAL_BORDER_WIDTH);
1655
1656 len -= textlen;
1657 text += textlen;
1658 if (text[0] == ' ') text++, len--;
1659 }
1660 }
1661 break;
1662 case para_bitmap:
1663 case para_metafile:
1664 {
1665 SIZE gfxSize;
1666 INT free_width;
1667 WINHELP_LINE_PART* ref_part;
1668
1669 if (p->u.gfx.pos & 0x8000)
1670 {
1671 space.cx = rect.left;
1672 if (*line)
1673 space.cy += (*line)->rect.bottom - (*line)->rect.top;
1674 part = 0;
1675 }
1676
1677 if (p->cookie == para_bitmap)
1678 {
1679 DIBSECTION dibs;
1680
1681 GetObject(p->u.gfx.u.bmp.hBitmap, sizeof(dibs), &dibs);
1682 gfxSize.cx = dibs.dsBm.bmWidth;
1683 gfxSize.cy = dibs.dsBm.bmHeight;
1684 }
1685 else
1686 {
1687 LPMETAFILEPICT lpmfp = &p->u.gfx.u.mfp;
1688 if (lpmfp->mm == MM_ANISOTROPIC || lpmfp->mm == MM_ISOTROPIC)
1689 {
1690 gfxSize.cx = MulDiv(lpmfp->xExt, GetDeviceCaps(hDc, HORZRES),
1691 100*GetDeviceCaps(hDc, HORZSIZE));
1692 gfxSize.cy = MulDiv(lpmfp->yExt, GetDeviceCaps(hDc, VERTRES),
1693 100*GetDeviceCaps(hDc, VERTSIZE));
1694 }
1695 else
1696 {
1697 gfxSize.cx = lpmfp->xExt;
1698 gfxSize.cy = lpmfp->yExt;
1699 }
1700 }
1701
1702 free_width = rect.right - ((part && *line) ? (*line)->rect.right : rect.left) - space.cx;
1703 if (free_width <= 0)
1704 {
1705 part = NULL;
1706 space.cx = rect.left;
1707 space.cx = min(space.cx, rect.right - rect.left - 1);
1708 }
1709 ref_part = WINHELP_AppendGfxObject(&line, &part, &space, &gfxSize,
1710 p->link, p->u.gfx.pos);
1711 if (!ref_part || (!newsize && (*line)->rect.bottom > rect.bottom))
1712 {
1713 return FALSE;
1714 }
1715 if (p->cookie == para_bitmap)
1716 {
1717 ref_part->cookie = hlp_line_part_bitmap;
1718 ref_part->u.bitmap.hBitmap = p->u.gfx.u.bmp.hBitmap;
1719 }
1720 else
1721 {
1722 ref_part->cookie = hlp_line_part_metafile;
1723 ref_part->u.metafile.hMetaFile = p->u.gfx.u.mfp.hMF;
1724 ref_part->u.metafile.mm = p->u.gfx.u.mfp.mm;
1725 }
1726 }
1727 break;
1728 }
1729 }
1730
1731 if (newsize)
1732 newsize->cy = (*line)->rect.bottom + INTERNAL_BORDER_WIDTH;
1733
1734 ReleaseDC(hWnd, hDc);
1735 return TRUE;
1736 }
1737
1738 /***********************************************************************
1739 *
1740 * WINHELP_CheckPopup
1741 */
1742 static void WINHELP_CheckPopup(UINT msg)
1743 {
1744 if (!Globals.hPopupWnd) return;
1745
1746 switch (msg)
1747 {
1748 case WM_COMMAND:
1749 case WM_LBUTTONDOWN:
1750 case WM_MBUTTONDOWN:
1751 case WM_RBUTTONDOWN:
1752 case WM_NCLBUTTONDOWN:
1753 case WM_NCMBUTTONDOWN:
1754 case WM_NCRBUTTONDOWN:
1755 DestroyWindow(Globals.hPopupWnd);
1756 Globals.hPopupWnd = 0;
1757 }
1758 }
1759
1760 /***********************************************************************
1761 *
1762 * WINHELP_DeleteLines
1763 */
1764 static void WINHELP_DeleteLines(WINHELP_WINDOW *win)
1765 {
1766 WINHELP_LINE *line, *next_line;
1767 WINHELP_LINE_PART *part, *next_part;
1768 for (line = win->first_line; line; line = next_line)
1769 {
1770 next_line = line->next;
1771 for (part = &line->first_part; part; part = next_part)
1772 {
1773 next_part = part->next;
1774 HLPFILE_FreeLink(part->link);
1775 HeapFree(GetProcessHeap(), 0, part);
1776 }
1777 }
1778 win->first_line = 0;
1779 }
1780
1781 /***********************************************************************
1782 *
1783 * WINHELP_DeleteWindow
1784 */
1785 static void WINHELP_DeleteWindow(WINHELP_WINDOW* win)
1786 {
1787 WINHELP_WINDOW** w;
1788 unsigned int i;
1789 WINHELP_BUTTON* b;
1790 WINHELP_BUTTON* bp;
1791
1792 for (w = &Globals.win_list; *w; w = &(*w)->next)
1793 {
1794 if (*w == win)
1795 {
1796 *w = win->next;
1797 break;
1798 }
1799 }
1800
1801 if (Globals.active_win == win)
1802 {
1803 Globals.active_win = Globals.win_list;
1804 if (Globals.win_list)
1805 SetActiveWindow(Globals.win_list->hMainWnd);
1806 }
1807
1808 for (b = win->first_button; b; b = bp)
1809 {
1810 DestroyWindow(b->hWnd);
1811 bp = b->next;
1812 HeapFree(GetProcessHeap(), 0, b);
1813 }
1814
1815 if (win->hShadowWnd) DestroyWindow(win->hShadowWnd);
1816 if (win->hHistoryWnd) DestroyWindow(win->hHistoryWnd);
1817
1818 for (i = 0; i < win->histIndex; i++)
1819 {
1820 HLPFILE_FreeHlpFile(win->history[i]->file);
1821 }
1822
1823 for (i = 0; i < win->backIndex; i++)
1824 HLPFILE_FreeHlpFile(win->back[i]->file);
1825
1826 if (win->page) HLPFILE_FreeHlpFile(win->page->file);
1827 WINHELP_DeleteLines(win);
1828 HeapFree(GetProcessHeap(), 0, win);
1829 }
1830
1831 /***********************************************************************
1832 *
1833 * WINHELP_InitFonts
1834 */
1835 static void WINHELP_InitFonts(HWND hWnd)
1836 {
1837 WINHELP_WINDOW *win = (WINHELP_WINDOW*) GetWindowLong(hWnd, 0);
1838 LOGFONT logfontlist[] = {
1839 {-10, 0, 0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1840 {-12, 0, 0, 0, 700, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1841 {-12, 0, 0, 0, 700, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1842 {-12, 0, 0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1843 {-12, 0, 0, 0, 700, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1844 {-10, 0, 0, 0, 700, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"},
1845 { -8, 0, 0, 0, 400, 0, 0, 0, 0, 0, 0, 0, 32, "Helv"}};
1846 #define FONTS_LEN (sizeof(logfontlist)/sizeof(*logfontlist))
1847
1848 static HFONT fonts[FONTS_LEN];
1849 static BOOL init = 0;
1850
1851 win->fonts_len = FONTS_LEN;
1852 win->fonts = fonts;
1853
1854 if (!init)
1855 {
1856 UINT i;
1857
1858 for (i = 0; i < FONTS_LEN; i++)
1859 {
1860 fonts[i] = CreateFontIndirect(&logfontlist[i]);
1861 }
1862
1863 init = 1;
1864 }
1865 }
1866
1867 /***********************************************************************
1868 *
1869 * WINHELP_MessageBoxIDS
1870 */
1871 INT WINHELP_MessageBoxIDS(UINT ids_text, UINT ids_title, WORD type)
1872 {
1873 CHAR text[MAX_STRING_LEN];
1874 CHAR title[MAX_STRING_LEN];
1875
1876 LoadString(Globals.hInstance, ids_text, text, sizeof(text));
1877 LoadString(Globals.hInstance, ids_title, title, sizeof(title));
1878
1879 return MessageBox(0, text, title, type);
1880 }
1881
1882 /***********************************************************************
1883 *
1884 * MAIN_MessageBoxIDS_s
1885 */
1886 INT WINHELP_MessageBoxIDS_s(UINT ids_text, LPCSTR str, UINT ids_title, WORD type)
1887 {
1888 CHAR text[MAX_STRING_LEN];
1889 CHAR title[MAX_STRING_LEN];
1890 CHAR newtext[MAX_STRING_LEN + MAX_PATH];
1891
1892 LoadString(Globals.hInstance, ids_text, text, sizeof(text));
1893 LoadString(Globals.hInstance, ids_title, title, sizeof(title));
1894 wsprintf(newtext, text, str);
1895
1896 return MessageBox(0, newtext, title, type);
1897 }
1898
1899 /******************************************************************
1900 * WINHELP_IsOverLink
1901 *
1902 *
1903 */
1904 WINHELP_LINE_PART* WINHELP_IsOverLink(WINHELP_WINDOW* win, WPARAM wParam, LPARAM lParam)
1905 {
1906 POINT mouse;
1907 WINHELP_LINE *line;
1908 WINHELP_LINE_PART *part;
1909 int scroll_pos = GetScrollPos(win->hTextWnd, SB_VERT);
1910
1911 mouse.x = LOWORD(lParam);
1912 mouse.y = HIWORD(lParam);
1913 for (line = win->first_line; line; line = line->next)
1914 {
1915 for (part = &line->first_part; part; part = part->next)
1916 {
1917 if (part->link &&
1918 part->link->lpszString &&
1919 part->rect.left <= mouse.x &&
1920 part->rect.right >= mouse.x &&
1921 part->rect.top <= mouse.y + scroll_pos &&
1922 part->rect.bottom >= mouse.y + scroll_pos)
1923 {
1924 return part;
1925 }
1926 }
1927 }
1928
1929 return NULL;
1930 }
GSOC 2012 project to enhance the control panel