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msi: Fix the published location of the upgrade code for the machine context.
[wine/multimedia.git] / dlls / user32 / class.c
blob1ca50f583beb9adf4828dfd0fbb6861eaa8fe296
1 /*
2 * Window classes functions
3 *
4 * Copyright 1993, 1996, 2003 Alexandre Julliard
5 * Copyright 1998 Juergen Schmied (jsch)
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22 #include "config.h"
23 #include "wine/port.h"
24
25 #include <assert.h>
26 #include <stdarg.h>
27 #include <stdlib.h>
28 #include <string.h>
29
30 #include "winerror.h"
31 #include "windef.h"
32 #include "winbase.h"
33 #include "wingdi.h"
34 #include "wine/unicode.h"
35 #include "win.h"
36 #include "user_private.h"
37 #include "controls.h"
38 #include "wine/server.h"
39 #include "wine/list.h"
40 #include "wine/debug.h"
41
42 WINE_DEFAULT_DEBUG_CHANNEL(class);
43
44 #define MAX_ATOM_LEN 255 /* from dlls/kernel32/atom.c */
45
46 typedef struct tagCLASS
47 {
48 struct list entry; /* Entry in class list */
49 UINT style; /* Class style */
50 BOOL local; /* Local class? */
51 WNDPROC winproc; /* Window procedure */
52 INT cbClsExtra; /* Class extra bytes */
53 INT cbWndExtra; /* Window extra bytes */
54 LPWSTR menuName; /* Default menu name (Unicode followed by ASCII) */
55 struct dce *dce; /* Opaque pointer to class DCE */
56 HINSTANCE hInstance; /* Module that created the task */
57 HICON hIcon; /* Default icon */
58 HICON hIconSm; /* Default small icon */
59 HCURSOR hCursor; /* Default cursor */
60 HBRUSH hbrBackground; /* Default background */
61 ATOM atomName; /* Name of the class */
62 WCHAR name[MAX_ATOM_LEN + 1];
63 } CLASS;
64
65 static struct list class_list = LIST_INIT( class_list );
66
67 #define CLASS_OTHER_PROCESS ((CLASS *)1)
68
69 /***********************************************************************
70 * get_class_ptr
71 */
72 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
73 {
74 WND *ptr = WIN_GetPtr( hwnd );
75
76 if (ptr)
77 {
78 if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class;
79 if (!write_access) return CLASS_OTHER_PROCESS;
80
81 /* modifying classes in other processes is not allowed */
82 if (ptr == WND_DESKTOP || IsWindow( hwnd ))
83 {
84 SetLastError( ERROR_ACCESS_DENIED );
85 return NULL;
86 }
87 }
88 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
89 return NULL;
90 }
91
92
93 /***********************************************************************
94 * release_class_ptr
95 */
96 static inline void release_class_ptr( CLASS *ptr )
97 {
98 USER_Unlock();
99 }
100
101
102 /***********************************************************************
103 * get_int_atom_value
104 */
105 ATOM get_int_atom_value( LPCWSTR name )
106 {
107 UINT ret = 0;
108
109 if (IS_INTRESOURCE(name)) return LOWORD(name);
110 if (*name++ != '#') return 0;
111 while (*name)
112 {
113 if (*name < '0' || *name > '9') return 0;
114 ret = ret * 10 + *name++ - '0';
115 if (ret > 0xffff) return 0;
116 }
117 return ret;
118 }
119
120
121 /***********************************************************************
122 * set_server_info
123 *
124 * Set class info with the wine server.
125 */
126 static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size )
127 {
128 BOOL ret;
129
130 SERVER_START_REQ( set_class_info )
131 {
132 req->window = hwnd;
133 req->extra_offset = -1;
134 switch(offset)
135 {
136 case GCW_ATOM:
137 req->flags = SET_CLASS_ATOM;
138 req->atom = newval;
139 case GCL_STYLE:
140 req->flags = SET_CLASS_STYLE;
141 req->style = newval;
142 break;
143 case GCL_CBWNDEXTRA:
144 req->flags = SET_CLASS_WINEXTRA;
145 req->win_extra = newval;
146 break;
147 case GCLP_HMODULE:
148 req->flags = SET_CLASS_INSTANCE;
149 req->instance = (void *)newval;
150 break;
151 default:
152 assert( offset >= 0 );
153 req->flags = SET_CLASS_EXTRA;
154 req->extra_offset = offset;
155 req->extra_size = size;
156 if ( size == sizeof(LONG) )
157 {
158 LONG newlong = newval;
159 memcpy( &req->extra_value, &newlong, sizeof(LONG) );
160 }
161 else
162 memcpy( &req->extra_value, &newval, sizeof(LONG_PTR) );
163 break;
164 }
165 ret = !wine_server_call_err( req );
166 }
167 SERVER_END_REQ;
168 return ret;
169 }
170
171
172 /***********************************************************************
173 * CLASS_GetMenuNameA
174 *
175 * Get the menu name as a ASCII string.
176 */
177 static inline LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
178 {
179 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
180 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
181 }
182
183
184 /***********************************************************************
185 * CLASS_GetMenuNameW
186 *
187 * Get the menu name as a Unicode string.
188 */
189 static inline LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
190 {
191 return classPtr->menuName;
192 }
193
194
195 /***********************************************************************
196 * CLASS_SetMenuNameA
197 *
198 * Set the menu name in a class structure by copying the string.
199 */
200 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
201 {
202 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
203 if (HIWORD(name))
204 {
205 DWORD lenA = strlen(name) + 1;
206 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
207 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
208 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
209 memcpy( classPtr->menuName + lenW, name, lenA );
210 }
211 else classPtr->menuName = (LPWSTR)name;
212 }
213
214
215 /***********************************************************************
216 * CLASS_SetMenuNameW
217 *
218 * Set the menu name in a class structure by copying the string.
219 */
220 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
221 {
222 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
223 if (HIWORD(name))
224 {
225 DWORD lenW = strlenW(name) + 1;
226 DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
227 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
228 memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
229 WideCharToMultiByte( CP_ACP, 0, name, lenW,
230 (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
231 }
232 else classPtr->menuName = (LPWSTR)name;
233 }
234
235
236 /***********************************************************************
237 * CLASS_FreeClass
238 *
239 * Free a class structure.
240 */
241 static void CLASS_FreeClass( CLASS *classPtr )
242 {
243 TRACE("%p\n", classPtr);
244
245 USER_Lock();
246
247 if (classPtr->dce) free_dce( classPtr->dce, 0 );
248 list_remove( &classPtr->entry );
249 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
250 DeleteObject( classPtr->hbrBackground );
251 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
252 HeapFree( GetProcessHeap(), 0, classPtr );
253 USER_Unlock();
254 }
255
256
257 /***********************************************************************
258 * CLASS_FreeModuleClasses
259 */
260 void CLASS_FreeModuleClasses( HMODULE16 hModule )
261 {
262 struct list *ptr, *next;
263
264 TRACE("0x%08x\n", hModule);
265
266 USER_Lock();
267 for (ptr = list_head( &class_list ); ptr; ptr = next)
268 {
269 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
270 next = list_next( &class_list, ptr );
271 if (class->hInstance == HINSTANCE_32(hModule))
272 {
273 BOOL ret;
274
275 SERVER_START_REQ( destroy_class )
276 {
277 req->atom = class->atomName;
278 req->instance = class->hInstance;
279 ret = !wine_server_call_err( req );
280 }
281 SERVER_END_REQ;
282 if (ret) CLASS_FreeClass( class );
283 }
284 }
285 USER_Unlock();
286 }
287
288
289 /***********************************************************************
290 * CLASS_FindClass
291 *
292 * Return a pointer to the class.
293 * hinstance has been normalized by the caller.
294 */
295 static CLASS *CLASS_FindClass( LPCWSTR name, HINSTANCE hinstance )
296 {
297 struct list *ptr;
298 ATOM atom = get_int_atom_value( name );
299
300 USER_Lock();
301
302 LIST_FOR_EACH( ptr, &class_list )
303 {
304 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
305 if (atom)
306 {
307 if (class->atomName != atom) continue;
308 }
309 else
310 {
311 if (!name || strcmpiW( class->name, name )) continue;
312 }
313 if (!hinstance || !class->local || class->hInstance == hinstance)
314 {
315 TRACE("%s %p -> %p\n", debugstr_w(name), hinstance, class);
316 return class;
317 }
318 }
319 USER_Unlock();
320 TRACE("%s %p -> not found\n", debugstr_w(name), hinstance);
321 return NULL;
322 }
323
324
325 /***********************************************************************
326 * CLASS_RegisterClass
327 *
328 * The real RegisterClass() functionality.
329 */
330 static CLASS *CLASS_RegisterClass( LPCWSTR name, HINSTANCE hInstance, BOOL local,
331 DWORD style, INT classExtra, INT winExtra )
332 {
333 CLASS *classPtr;
334 BOOL ret;
335
336 TRACE("name=%s hinst=%p style=0x%x clExtr=0x%x winExtr=0x%x\n",
337 debugstr_w(name), hInstance, style, classExtra, winExtra );
338
339 /* Fix the extra bytes value */
340
341 if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
342 WARN("Class extra bytes %d is > 40\n", classExtra);
343 if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
344 WARN("Win extra bytes %d is > 40\n", winExtra );
345
346 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
347 if (!classPtr) return NULL;
348
349 classPtr->atomName = get_int_atom_value( name );
350 if (!classPtr->atomName && name) strcpyW( classPtr->name, name );
351 else GlobalGetAtomNameW( classPtr->atomName, classPtr->name, sizeof(classPtr->name)/sizeof(WCHAR) );
352
353 SERVER_START_REQ( create_class )
354 {
355 req->local = local;
356 req->style = style;
357 req->instance = hInstance;
358 req->extra = classExtra;
359 req->win_extra = winExtra;
360 req->client_ptr = classPtr;
361 req->atom = classPtr->atomName;
362 if (!req->atom && name) wine_server_add_data( req, name, strlenW(name) * sizeof(WCHAR) );
363 ret = !wine_server_call_err( req );
364 classPtr->atomName = reply->atom;
365 }
366 SERVER_END_REQ;
367 if (!ret)
368 {
369 HeapFree( GetProcessHeap(), 0, classPtr );
370 return NULL;
371 }
372
373 classPtr->style = style;
374 classPtr->local = local;
375 classPtr->cbWndExtra = winExtra;
376 classPtr->cbClsExtra = classExtra;
377 classPtr->hInstance = hInstance;
378
379 /* Other non-null values must be set by caller */
380
381 USER_Lock();
382 if (local) list_add_head( &class_list, &classPtr->entry );
383 else list_add_tail( &class_list, &classPtr->entry );
384 return classPtr;
385 }
386
387
388 /***********************************************************************
389 * register_builtin
390 *
391 * Register a builtin control class.
392 * This allows having both ASCII and Unicode winprocs for the same class.
393 */
394 static WNDPROC register_builtin( const struct builtin_class_descr *descr )
395 {
396 CLASS *classPtr;
397
398 if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE,
399 descr->style, 0, descr->extra ))) return 0;
400
401 classPtr->hCursor = LoadCursorA( 0, (LPSTR)descr->cursor );
402 classPtr->hbrBackground = descr->brush;
403 classPtr->winproc = WINPROC_AllocProc( descr->procA, descr->procW );
404 release_class_ptr( classPtr );
405 return classPtr->winproc;
406 }
407
408
409 /***********************************************************************
410 * CLASS_RegisterBuiltinClasses
411 */
412 void CLASS_RegisterBuiltinClasses(void)
413 {
414 register_builtin( &DESKTOP_builtin_class );
415 register_builtin( &BUTTON_builtin_class );
416 register_builtin( &COMBO_builtin_class );
417 register_builtin( &COMBOLBOX_builtin_class );
418 register_builtin( &DIALOG_builtin_class );
419 EDIT_winproc_handle = register_builtin( &EDIT_builtin_class );
420 register_builtin( &ICONTITLE_builtin_class );
421 register_builtin( &LISTBOX_builtin_class );
422 register_builtin( &MDICLIENT_builtin_class );
423 register_builtin( &MENU_builtin_class );
424 register_builtin( &SCROLL_builtin_class );
425 register_builtin( &STATIC_builtin_class );
426
427 /* the DefWindowProc winprocs are magic too */
428 WINPROC_AllocProc( DefWindowProcA, DefWindowProcW );
429 }
430
431
432 /***********************************************************************
433 * get_class_winproc
434 */
435 WNDPROC get_class_winproc( CLASS *class )
436 {
437 return class->winproc;
438 }
439
440
441 /***********************************************************************
442 * get_class_dce
443 */
444 struct dce *get_class_dce( CLASS *class )
445 {
446 return class->dce;
447 }
448
449
450 /***********************************************************************
451 * set_class_dce
452 */
453 struct dce *set_class_dce( CLASS *class, struct dce *dce )
454 {
455 if (class->dce) return class->dce; /* already set, don't change it */
456 class->dce = dce;
457 return dce;
458 }
459
460
461 /***********************************************************************
462 * RegisterClassA (USER32.@)
463 *
464 * Register a window class.
465 *
466 * RETURNS
467 * >0: Unique identifier
468 * 0: Failure
469 */
470 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
471 {
472 WNDCLASSEXA wcex;
473
474 wcex.cbSize = sizeof(wcex);
475 wcex.style = wc->style;
476 wcex.lpfnWndProc = wc->lpfnWndProc;
477 wcex.cbClsExtra = wc->cbClsExtra;
478 wcex.cbWndExtra = wc->cbWndExtra;
479 wcex.hInstance = wc->hInstance;
480 wcex.hIcon = wc->hIcon;
481 wcex.hCursor = wc->hCursor;
482 wcex.hbrBackground = wc->hbrBackground;
483 wcex.lpszMenuName = wc->lpszMenuName;
484 wcex.lpszClassName = wc->lpszClassName;
485 wcex.hIconSm = 0;
486 return RegisterClassExA( &wcex );
487 }
488
489
490 /***********************************************************************
491 * RegisterClassW (USER32.@)
492 *
493 * See RegisterClassA.
494 */
495 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
496 {
497 WNDCLASSEXW wcex;
498
499 wcex.cbSize = sizeof(wcex);
500 wcex.style = wc->style;
501 wcex.lpfnWndProc = wc->lpfnWndProc;
502 wcex.cbClsExtra = wc->cbClsExtra;
503 wcex.cbWndExtra = wc->cbWndExtra;
504 wcex.hInstance = wc->hInstance;
505 wcex.hIcon = wc->hIcon;
506 wcex.hCursor = wc->hCursor;
507 wcex.hbrBackground = wc->hbrBackground;
508 wcex.lpszMenuName = wc->lpszMenuName;
509 wcex.lpszClassName = wc->lpszClassName;
510 wcex.hIconSm = 0;
511 return RegisterClassExW( &wcex );
512 }
513
514
515 /***********************************************************************
516 * RegisterClassExA (USER32.@)
517 */
518 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
519 {
520 ATOM atom;
521 CLASS *classPtr;
522 HINSTANCE instance;
523
524 if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 ||
525 wc->hInstance == user32_module) /* we can't register a class for user32 */
526 {
527 SetLastError( ERROR_INVALID_PARAMETER );
528 return 0;
529 }
530 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
531
532 if (!IS_INTRESOURCE(wc->lpszClassName))
533 {
534 WCHAR name[MAX_ATOM_LEN + 1];
535
536 if (!MultiByteToWideChar( CP_ACP, 0, wc->lpszClassName, -1, name, MAX_ATOM_LEN + 1 )) return 0;
537 classPtr = CLASS_RegisterClass( name, instance, !(wc->style & CS_GLOBALCLASS),
538 wc->style, wc->cbClsExtra, wc->cbWndExtra );
539 }
540 else
541 {
542 classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance,
543 !(wc->style & CS_GLOBALCLASS), wc->style,
544 wc->cbClsExtra, wc->cbWndExtra );
545 }
546 if (!classPtr) return 0;
547 atom = classPtr->atomName;
548
549 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
550 debugstr_a(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
551 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
552
553 classPtr->hIcon = wc->hIcon;
554 classPtr->hIconSm = wc->hIconSm;
555 classPtr->hCursor = wc->hCursor;
556 classPtr->hbrBackground = wc->hbrBackground;
557 classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, NULL );
558 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
559 release_class_ptr( classPtr );
560 return atom;
561 }
562
563
564 /***********************************************************************
565 * RegisterClassExW (USER32.@)
566 */
567 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
568 {
569 ATOM atom;
570 CLASS *classPtr;
571 HINSTANCE instance;
572
573 if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 ||
574 wc->hInstance == user32_module) /* we can't register a class for user32 */
575 {
576 SetLastError( ERROR_INVALID_PARAMETER );
577 return 0;
578 }
579 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
580
581 if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS),
582 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
583 return 0;
584
585 atom = classPtr->atomName;
586
587 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
588 debugstr_w(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
589 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
590
591 classPtr->hIcon = wc->hIcon;
592 classPtr->hIconSm = wc->hIconSm;
593 classPtr->hCursor = wc->hCursor;
594 classPtr->hbrBackground = wc->hbrBackground;
595 classPtr->winproc = WINPROC_AllocProc( NULL, wc->lpfnWndProc );
596 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
597 release_class_ptr( classPtr );
598 return atom;
599 }
600
601
602 /***********************************************************************
603 * UnregisterClassA (USER32.@)
604 */
605 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
606 {
607 if (!IS_INTRESOURCE(className))
608 {
609 WCHAR name[MAX_ATOM_LEN + 1];
610
611 if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 ))
612 return FALSE;
613 return UnregisterClassW( name, hInstance );
614 }
615 return UnregisterClassW( (LPCWSTR)className, hInstance );
616 }
617
618 /***********************************************************************
619 * UnregisterClassW (USER32.@)
620 */
621 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
622 {
623 CLASS *classPtr = NULL;
624
625 SERVER_START_REQ( destroy_class )
626 {
627 req->instance = hInstance;
628 if (!(req->atom = get_int_atom_value(className)) && className)
629 wine_server_add_data( req, className, strlenW(className) * sizeof(WCHAR) );
630 if (!wine_server_call_err( req )) classPtr = reply->client_ptr;
631 }
632 SERVER_END_REQ;
633
634 if (classPtr) CLASS_FreeClass( classPtr );
635 return (classPtr != NULL);
636 }
637
638
639 /***********************************************************************
640 * GetClassWord (USER32.@)
641 */
642 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
643 {
644 CLASS *class;
645 WORD retvalue = 0;
646
647 if (offset < 0) return GetClassLongA( hwnd, offset );
648
649 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
650
651 if (class == CLASS_OTHER_PROCESS)
652 {
653 SERVER_START_REQ( set_class_info )
654 {
655 req->window = hwnd;
656 req->flags = 0;
657 req->extra_offset = offset;
658 req->extra_size = sizeof(retvalue);
659 if (!wine_server_call_err( req ))
660 memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) );
661 }
662 SERVER_END_REQ;
663 return retvalue;
664 }
665
666 if (offset <= class->cbClsExtra - sizeof(WORD))
667 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
668 else
669 SetLastError( ERROR_INVALID_INDEX );
670 release_class_ptr( class );
671 return retvalue;
672 }
673
674
675 /***********************************************************************
676 * CLASS_GetClassLong
677 *
678 * Implementation of GetClassLong(Ptr)A/W
679 */
680 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
681 BOOL unicode )
682 {
683 CLASS *class;
684 ULONG_PTR retvalue = 0;
685
686 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
687
688 if (class == CLASS_OTHER_PROCESS)
689 {
690 SERVER_START_REQ( set_class_info )
691 {
692 req->window = hwnd;
693 req->flags = 0;
694 req->extra_offset = (offset >= 0) ? offset : -1;
695 req->extra_size = (offset >= 0) ? size : 0;
696 if (!wine_server_call_err( req ))
697 {
698 switch(offset)
699 {
700 case GCLP_HBRBACKGROUND:
701 case GCLP_HCURSOR:
702 case GCLP_HICON:
703 case GCLP_HICONSM:
704 case GCLP_WNDPROC:
705 case GCLP_MENUNAME:
706 FIXME( "offset %d (%s) not supported on other process window %p\n",
707 offset, SPY_GetClassLongOffsetName(offset), hwnd );
708 SetLastError( ERROR_INVALID_HANDLE );
709 break;
710 case GCL_STYLE:
711 retvalue = reply->old_style;
712 break;
713 case GCL_CBWNDEXTRA:
714 retvalue = reply->old_win_extra;
715 break;
716 case GCL_CBCLSEXTRA:
717 retvalue = reply->old_extra;
718 break;
719 case GCLP_HMODULE:
720 retvalue = (ULONG_PTR)reply->old_instance;
721 break;
722 case GCW_ATOM:
723 retvalue = reply->old_atom;
724 break;
725 default:
726 if (offset >= 0)
727 {
728 if (size == sizeof(DWORD))
729 {
730 DWORD retdword;
731 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
732 retvalue = retdword;
733 }
734 else
735 memcpy( &retvalue, &reply->old_extra_value,
736 sizeof(ULONG_PTR) );
737 }
738 else SetLastError( ERROR_INVALID_INDEX );
739 break;
740 }
741 }
742 }
743 SERVER_END_REQ;
744 return retvalue;
745 }
746
747 if (offset >= 0)
748 {
749 if (offset <= class->cbClsExtra - size)
750 {
751 if (size == sizeof(DWORD))
752 {
753 DWORD retdword;
754 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
755 retvalue = retdword;
756 }
757 else
758 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
759 }
760 else
761 SetLastError( ERROR_INVALID_INDEX );
762 release_class_ptr( class );
763 return retvalue;
764 }
765
766 switch(offset)
767 {
768 case GCLP_HBRBACKGROUND:
769 retvalue = (ULONG_PTR)class->hbrBackground;
770 break;
771 case GCLP_HCURSOR:
772 retvalue = (ULONG_PTR)class->hCursor;
773 break;
774 case GCLP_HICON:
775 retvalue = (ULONG_PTR)class->hIcon;
776 break;
777 case GCLP_HICONSM:
778 retvalue = (ULONG_PTR)class->hIconSm;
779 break;
780 case GCL_STYLE:
781 retvalue = class->style;
782 break;
783 case GCL_CBWNDEXTRA:
784 retvalue = class->cbWndExtra;
785 break;
786 case GCL_CBCLSEXTRA:
787 retvalue = class->cbClsExtra;
788 break;
789 case GCLP_HMODULE:
790 retvalue = (ULONG_PTR)class->hInstance;
791 break;
792 case GCLP_WNDPROC:
793 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
794 break;
795 case GCLP_MENUNAME:
796 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
797 if (unicode)
798 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
799 else
800 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
801 break;
802 case GCW_ATOM:
803 retvalue = class->atomName;
804 break;
805 default:
806 SetLastError( ERROR_INVALID_INDEX );
807 break;
808 }
809 release_class_ptr( class );
810 return retvalue;
811 }
812
813
814 /***********************************************************************
815 * GetClassLongW (USER32.@)
816 */
817 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
818 {
819 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
820 }
821
822
823
824 /***********************************************************************
825 * GetClassLongA (USER32.@)
826 */
827 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
828 {
829 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
830 }
831
832
833 /***********************************************************************
834 * SetClassWord (USER32.@)
835 */
836 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
837 {
838 CLASS *class;
839 WORD retval = 0;
840
841 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
842
843 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
844
845 SERVER_START_REQ( set_class_info )
846 {
847 req->window = hwnd;
848 req->flags = SET_CLASS_EXTRA;
849 req->extra_offset = offset;
850 req->extra_size = sizeof(newval);
851 memcpy( &req->extra_value, &newval, sizeof(newval) );
852 if (!wine_server_call_err( req ))
853 {
854 void *ptr = (char *)(class + 1) + offset;
855 memcpy( &retval, ptr, sizeof(retval) );
856 memcpy( ptr, &newval, sizeof(newval) );
857 }
858 }
859 SERVER_END_REQ;
860 release_class_ptr( class );
861 return retval;
862 }
863
864
865 /***********************************************************************
866 * CLASS_SetClassLong
867 *
868 * Implementation of SetClassLong(Ptr)A/W
869 */
870 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
871 UINT size, BOOL unicode )
872 {
873 CLASS *class;
874 ULONG_PTR retval = 0;
875
876 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
877
878 if (offset >= 0)
879 {
880 if (set_server_info( hwnd, offset, newval, size ))
881 {
882 void *ptr = (char *)(class + 1) + offset;
883 if ( size == sizeof(LONG) )
884 {
885 DWORD retdword;
886 LONG newlong = newval;
887 memcpy( &retdword, ptr, sizeof(DWORD) );
888 memcpy( ptr, &newlong, sizeof(LONG) );
889 retval = retdword;
890 }
891 else
892 {
893 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
894 memcpy( ptr, &newval, sizeof(LONG_PTR) );
895 }
896 }
897 }
898 else switch(offset)
899 {
900 case GCLP_MENUNAME:
901 if ( unicode )
902 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
903 else
904 CLASS_SetMenuNameA( class, (LPCSTR)newval );
905 retval = 0; /* Old value is now meaningless anyway */
906 break;
907 case GCLP_WNDPROC:
908 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
909 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
910 unicode ? (WNDPROC)newval : NULL );
911 break;
912 case GCLP_HBRBACKGROUND:
913 retval = (ULONG_PTR)class->hbrBackground;
914 class->hbrBackground = (HBRUSH)newval;
915 break;
916 case GCLP_HCURSOR:
917 retval = (ULONG_PTR)class->hCursor;
918 class->hCursor = (HCURSOR)newval;
919 break;
920 case GCLP_HICON:
921 retval = (ULONG_PTR)class->hIcon;
922 class->hIcon = (HICON)newval;
923 break;
924 case GCLP_HICONSM:
925 retval = (ULONG_PTR)class->hIconSm;
926 class->hIconSm = (HICON)newval;
927 break;
928 case GCL_STYLE:
929 if (!set_server_info( hwnd, offset, newval, size )) break;
930 retval = class->style;
931 class->style = newval;
932 break;
933 case GCL_CBWNDEXTRA:
934 if (!set_server_info( hwnd, offset, newval, size )) break;
935 retval = class->cbWndExtra;
936 class->cbWndExtra = newval;
937 break;
938 case GCLP_HMODULE:
939 if (!set_server_info( hwnd, offset, newval, size )) break;
940 retval = (ULONG_PTR)class->hInstance;
941 class->hInstance = (HINSTANCE)newval;
942 break;
943 case GCW_ATOM:
944 if (!set_server_info( hwnd, offset, newval, size )) break;
945 retval = class->atomName;
946 class->atomName = newval;
947 GlobalGetAtomNameW( newval, class->name, sizeof(class->name)/sizeof(WCHAR) );
948 break;
949 case GCL_CBCLSEXTRA: /* cannot change this one */
950 SetLastError( ERROR_INVALID_PARAMETER );
951 break;
952 default:
953 SetLastError( ERROR_INVALID_INDEX );
954 break;
955 }
956 release_class_ptr( class );
957 return retval;
958 }
959
960
961 /***********************************************************************
962 * SetClassLongW (USER32.@)
963 */
964 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
965 {
966 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE );
967 }
968
969
970 /***********************************************************************
971 * SetClassLongA (USER32.@)
972 */
973 DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
974 {
975 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
976 }
977
978
979 /***********************************************************************
980 * GetClassNameA (USER32.@)
981 */
982 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
983 {
984 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
985 DWORD len;
986
987 if (count <= 0) return 0;
988 if (!GetClassNameW( hwnd, tmpbuf, sizeof(tmpbuf)/sizeof(WCHAR) )) return 0;
989 RtlUnicodeToMultiByteN( buffer, count - 1, &len, tmpbuf, strlenW(tmpbuf) * sizeof(WCHAR) );
990 buffer[len] = 0;
991 return len;
992 }
993
994
995 /***********************************************************************
996 * GetClassNameW (USER32.@)
997 */
998 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
999 {
1000 CLASS *class;
1001 INT ret;
1002
1003 TRACE("%p %p %d\n", hwnd, buffer, count);
1004
1005 if (count <= 0) return 0;
1006
1007 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
1008
1009 if (class == CLASS_OTHER_PROCESS)
1010 {
1011 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
1012
1013 ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 );
1014 if (ret)
1015 {
1016 ret = min(count - 1, ret);
1017 memcpy(buffer, tmpbuf, ret * sizeof(WCHAR));
1018 buffer[ret] = 0;
1019 }
1020 }
1021 else
1022 {
1023 lstrcpynW( buffer, class->name, count );
1024 release_class_ptr( class );
1025 ret = strlenW( buffer );
1026 }
1027 return ret;
1028 }
1029
1030
1031 /***********************************************************************
1032 * RealGetWindowClassA (USER32.@)
1033 */
1034 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
1035 {
1036 return GetClassNameA( hwnd, buffer, count );
1037 }
1038
1039
1040 /***********************************************************************
1041 * RealGetWindowClassW (USER32.@)
1042 */
1043 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
1044 {
1045 return GetClassNameW( hwnd, buffer, count );
1046 }
1047
1048
1049 /***********************************************************************
1050 * GetClassInfoA (USER32.@)
1051 */
1052 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1053 {
1054 WNDCLASSEXA wcex;
1055 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
1056
1057 if (ret)
1058 {
1059 wc->style = wcex.style;
1060 wc->lpfnWndProc = wcex.lpfnWndProc;
1061 wc->cbClsExtra = wcex.cbClsExtra;
1062 wc->cbWndExtra = wcex.cbWndExtra;
1063 wc->hInstance = wcex.hInstance;
1064 wc->hIcon = wcex.hIcon;
1065 wc->hCursor = wcex.hCursor;
1066 wc->hbrBackground = wcex.hbrBackground;
1067 wc->lpszMenuName = wcex.lpszMenuName;
1068 wc->lpszClassName = wcex.lpszClassName;
1069 }
1070 return ret;
1071 }
1072
1073
1074 /***********************************************************************
1075 * GetClassInfoW (USER32.@)
1076 */
1077 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1078 {
1079 WNDCLASSEXW wcex;
1080 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
1081
1082 if (ret)
1083 {
1084 wc->style = wcex.style;
1085 wc->lpfnWndProc = wcex.lpfnWndProc;
1086 wc->cbClsExtra = wcex.cbClsExtra;
1087 wc->cbWndExtra = wcex.cbWndExtra;
1088 wc->hInstance = wcex.hInstance;
1089 wc->hIcon = wcex.hIcon;
1090 wc->hCursor = wcex.hCursor;
1091 wc->hbrBackground = wcex.hbrBackground;
1092 wc->lpszMenuName = wcex.lpszMenuName;
1093 wc->lpszClassName = wcex.lpszClassName;
1094 }
1095 return ret;
1096 }
1097
1098
1099 /***********************************************************************
1100 * GetClassInfoExA (USER32.@)
1101 */
1102 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1103 {
1104 ATOM atom;
1105 CLASS *classPtr;
1106
1107 TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc);
1108
1109 if (!hInstance) hInstance = user32_module;
1110
1111 if (!IS_INTRESOURCE(name))
1112 {
1113 WCHAR nameW[MAX_ATOM_LEN + 1];
1114 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) ))
1115 return FALSE;
1116 classPtr = CLASS_FindClass( nameW, hInstance );
1117 }
1118 else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance );
1119
1120 if (!classPtr)
1121 {
1122 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1123 return FALSE;
1124 }
1125 wc->style = classPtr->style;
1126 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE );
1127 wc->cbClsExtra = classPtr->cbClsExtra;
1128 wc->cbWndExtra = classPtr->cbWndExtra;
1129 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1130 wc->hIcon = classPtr->hIcon;
1131 wc->hIconSm = classPtr->hIconSm;
1132 wc->hCursor = classPtr->hCursor;
1133 wc->hbrBackground = classPtr->hbrBackground;
1134 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1135 wc->lpszClassName = name;
1136 atom = classPtr->atomName;
1137 release_class_ptr( classPtr );
1138
1139 /* We must return the atom of the class here instead of just TRUE. */
1140 return atom;
1141 }
1142
1143
1144 /***********************************************************************
1145 * GetClassInfoExW (USER32.@)
1146 */
1147 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1148 {
1149 ATOM atom;
1150 CLASS *classPtr;
1151
1152 TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc);
1153
1154 if (!hInstance) hInstance = user32_module;
1155
1156 if (!(classPtr = CLASS_FindClass( name, hInstance )))
1157 {
1158 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1159 return FALSE;
1160 }
1161 wc->style = classPtr->style;
1162 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE );
1163 wc->cbClsExtra = classPtr->cbClsExtra;
1164 wc->cbWndExtra = classPtr->cbWndExtra;
1165 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1166 wc->hIcon = (HICON)classPtr->hIcon;
1167 wc->hIconSm = (HICON)classPtr->hIconSm;
1168 wc->hCursor = (HCURSOR)classPtr->hCursor;
1169 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1170 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1171 wc->lpszClassName = name;
1172 atom = classPtr->atomName;
1173 release_class_ptr( classPtr );
1174
1175 /* We must return the atom of the class here instead of just TRUE. */
1176 return atom;
1177 }
1178
1179
1180 #if 0 /* toolhelp is in kernel, so this cannot work */
1181
1182 /***********************************************************************
1183 * ClassFirst (TOOLHELP.69)
1184 */
1185 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1186 {
1187 TRACE("%p\n",pClassEntry);
1188 pClassEntry->wNext = 1;
1189 return ClassNext16( pClassEntry );
1190 }
1191
1192
1193 /***********************************************************************
1194 * ClassNext (TOOLHELP.70)
1195 */
1196 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1197 {
1198 int i;
1199 CLASS *class = firstClass;
1200
1201 TRACE("%p\n",pClassEntry);
1202
1203 if (!pClassEntry->wNext) return FALSE;
1204 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1205 if (!class)
1206 {
1207 pClassEntry->wNext = 0;
1208 return FALSE;
1209 }
1210 pClassEntry->hInst = class->hInstance;
1211 pClassEntry->wNext++;
1212 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1213 sizeof(pClassEntry->szClassName) );
1214 return TRUE;
1215 }
1216 #endif
1217
1218 /* 64bit versions */
1219
1220 #ifdef GetClassLongPtrA
1221 #undef GetClassLongPtrA
1222 #endif
1223
1224 #ifdef GetClassLongPtrW
1225 #undef GetClassLongPtrW
1226 #endif
1227
1228 #ifdef SetClassLongPtrA
1229 #undef SetClassLongPtrA
1230 #endif
1231
1232 #ifdef SetClassLongPtrW
1233 #undef SetClassLongPtrW
1234 #endif
1235
1236 /***********************************************************************
1237 * GetClassLongPtrA (USER32.@)
1238 */
1239 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1240 {
1241 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1242 }
1243
1244 /***********************************************************************
1245 * GetClassLongPtrW (USER32.@)
1246 */
1247 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1248 {
1249 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1250 }
1251
1252 /***********************************************************************
1253 * SetClassLongPtrW (USER32.@)
1254 */
1255 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1256 {
1257 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1258 }
1259
1260 /***********************************************************************
1261 * SetClassLongPtrA (USER32.@)
1262 */
1263 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1264 {
1265 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );
1266 }
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