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winex11: Fix handling of property sizes for 64-bit platforms.
[wine/multimedia.git] / dlls / user32 / class.c
blobff0e1f804b641255706934422e82cca691be9787
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 < 0 || winExtra < 0)
342 {
343 SetLastError( ERROR_INVALID_PARAMETER );
344 return NULL;
345 }
346 if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
347 WARN("Class extra bytes %d is > 40\n", classExtra);
348 if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
349 WARN("Win extra bytes %d is > 40\n", winExtra );
350
351 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
352 if (!classPtr) return NULL;
353
354 classPtr->atomName = get_int_atom_value( name );
355 if (!classPtr->atomName && name) strcpyW( classPtr->name, name );
356 else GlobalGetAtomNameW( classPtr->atomName, classPtr->name, sizeof(classPtr->name)/sizeof(WCHAR) );
357
358 SERVER_START_REQ( create_class )
359 {
360 req->local = local;
361 req->style = style;
362 req->instance = hInstance;
363 req->extra = classExtra;
364 req->win_extra = winExtra;
365 req->client_ptr = classPtr;
366 req->atom = classPtr->atomName;
367 if (!req->atom && name) wine_server_add_data( req, name, strlenW(name) * sizeof(WCHAR) );
368 ret = !wine_server_call_err( req );
369 classPtr->atomName = reply->atom;
370 }
371 SERVER_END_REQ;
372 if (!ret)
373 {
374 HeapFree( GetProcessHeap(), 0, classPtr );
375 return NULL;
376 }
377
378 classPtr->style = style;
379 classPtr->local = local;
380 classPtr->cbWndExtra = winExtra;
381 classPtr->cbClsExtra = classExtra;
382 classPtr->hInstance = hInstance;
383
384 /* Other non-null values must be set by caller */
385
386 USER_Lock();
387 if (local) list_add_head( &class_list, &classPtr->entry );
388 else list_add_tail( &class_list, &classPtr->entry );
389 return classPtr;
390 }
391
392
393 /***********************************************************************
394 * register_builtin
395 *
396 * Register a builtin control class.
397 * This allows having both ASCII and Unicode winprocs for the same class.
398 */
399 static WNDPROC register_builtin( const struct builtin_class_descr *descr )
400 {
401 CLASS *classPtr;
402
403 if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE,
404 descr->style, 0, descr->extra ))) return 0;
405
406 classPtr->hCursor = LoadCursorA( 0, (LPSTR)descr->cursor );
407 classPtr->hbrBackground = descr->brush;
408 classPtr->winproc = WINPROC_AllocProc( descr->procA, descr->procW );
409 release_class_ptr( classPtr );
410 return classPtr->winproc;
411 }
412
413
414 /***********************************************************************
415 * CLASS_RegisterBuiltinClasses
416 */
417 void CLASS_RegisterBuiltinClasses(void)
418 {
419 register_builtin( &DESKTOP_builtin_class );
420 register_builtin( &BUTTON_builtin_class );
421 register_builtin( &COMBO_builtin_class );
422 register_builtin( &COMBOLBOX_builtin_class );
423 register_builtin( &DIALOG_builtin_class );
424 EDIT_winproc_handle = register_builtin( &EDIT_builtin_class );
425 register_builtin( &ICONTITLE_builtin_class );
426 register_builtin( &LISTBOX_builtin_class );
427 register_builtin( &MDICLIENT_builtin_class );
428 register_builtin( &MENU_builtin_class );
429 register_builtin( &SCROLL_builtin_class );
430 register_builtin( &STATIC_builtin_class );
431
432 /* the DefWindowProc winprocs are magic too */
433 WINPROC_AllocProc( DefWindowProcA, DefWindowProcW );
434 }
435
436
437 /***********************************************************************
438 * get_class_winproc
439 */
440 WNDPROC get_class_winproc( CLASS *class )
441 {
442 return class->winproc;
443 }
444
445
446 /***********************************************************************
447 * get_class_dce
448 */
449 struct dce *get_class_dce( CLASS *class )
450 {
451 return class->dce;
452 }
453
454
455 /***********************************************************************
456 * set_class_dce
457 */
458 struct dce *set_class_dce( CLASS *class, struct dce *dce )
459 {
460 if (class->dce) return class->dce; /* already set, don't change it */
461 class->dce = dce;
462 return dce;
463 }
464
465
466 /***********************************************************************
467 * RegisterClassA (USER32.@)
468 *
469 * Register a window class.
470 *
471 * RETURNS
472 * >0: Unique identifier
473 * 0: Failure
474 */
475 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
476 {
477 WNDCLASSEXA wcex;
478
479 wcex.cbSize = sizeof(wcex);
480 wcex.style = wc->style;
481 wcex.lpfnWndProc = wc->lpfnWndProc;
482 wcex.cbClsExtra = wc->cbClsExtra;
483 wcex.cbWndExtra = wc->cbWndExtra;
484 wcex.hInstance = wc->hInstance;
485 wcex.hIcon = wc->hIcon;
486 wcex.hCursor = wc->hCursor;
487 wcex.hbrBackground = wc->hbrBackground;
488 wcex.lpszMenuName = wc->lpszMenuName;
489 wcex.lpszClassName = wc->lpszClassName;
490 wcex.hIconSm = 0;
491 return RegisterClassExA( &wcex );
492 }
493
494
495 /***********************************************************************
496 * RegisterClassW (USER32.@)
497 *
498 * See RegisterClassA.
499 */
500 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
501 {
502 WNDCLASSEXW wcex;
503
504 wcex.cbSize = sizeof(wcex);
505 wcex.style = wc->style;
506 wcex.lpfnWndProc = wc->lpfnWndProc;
507 wcex.cbClsExtra = wc->cbClsExtra;
508 wcex.cbWndExtra = wc->cbWndExtra;
509 wcex.hInstance = wc->hInstance;
510 wcex.hIcon = wc->hIcon;
511 wcex.hCursor = wc->hCursor;
512 wcex.hbrBackground = wc->hbrBackground;
513 wcex.lpszMenuName = wc->lpszMenuName;
514 wcex.lpszClassName = wc->lpszClassName;
515 wcex.hIconSm = 0;
516 return RegisterClassExW( &wcex );
517 }
518
519
520 /***********************************************************************
521 * RegisterClassExA (USER32.@)
522 */
523 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
524 {
525 ATOM atom;
526 CLASS *classPtr;
527 HINSTANCE instance;
528
529 if (wc->hInstance == user32_module)
530 {
531 /* we can't register a class for user32 */
532 SetLastError( ERROR_INVALID_PARAMETER );
533 return 0;
534 }
535 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
536
537 if (!IS_INTRESOURCE(wc->lpszClassName))
538 {
539 WCHAR name[MAX_ATOM_LEN + 1];
540
541 if (!MultiByteToWideChar( CP_ACP, 0, wc->lpszClassName, -1, name, MAX_ATOM_LEN + 1 )) return 0;
542 classPtr = CLASS_RegisterClass( name, instance, !(wc->style & CS_GLOBALCLASS),
543 wc->style, wc->cbClsExtra, wc->cbWndExtra );
544 }
545 else
546 {
547 classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance,
548 !(wc->style & CS_GLOBALCLASS), wc->style,
549 wc->cbClsExtra, wc->cbWndExtra );
550 }
551 if (!classPtr) return 0;
552 atom = classPtr->atomName;
553
554 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
555 debugstr_a(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
556 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
557
558 classPtr->hIcon = wc->hIcon;
559 classPtr->hIconSm = wc->hIconSm;
560 classPtr->hCursor = wc->hCursor;
561 classPtr->hbrBackground = wc->hbrBackground;
562 classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, NULL );
563 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
564 release_class_ptr( classPtr );
565 return atom;
566 }
567
568
569 /***********************************************************************
570 * RegisterClassExW (USER32.@)
571 */
572 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
573 {
574 ATOM atom;
575 CLASS *classPtr;
576 HINSTANCE instance;
577
578 if (wc->hInstance == user32_module)
579 {
580 /* we can't register a class for user32 */
581 SetLastError( ERROR_INVALID_PARAMETER );
582 return 0;
583 }
584 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
585
586 if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS),
587 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
588 return 0;
589
590 atom = classPtr->atomName;
591
592 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
593 debugstr_w(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
594 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
595
596 classPtr->hIcon = wc->hIcon;
597 classPtr->hIconSm = wc->hIconSm;
598 classPtr->hCursor = wc->hCursor;
599 classPtr->hbrBackground = wc->hbrBackground;
600 classPtr->winproc = WINPROC_AllocProc( NULL, wc->lpfnWndProc );
601 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
602 release_class_ptr( classPtr );
603 return atom;
604 }
605
606
607 /***********************************************************************
608 * UnregisterClassA (USER32.@)
609 */
610 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
611 {
612 if (!IS_INTRESOURCE(className))
613 {
614 WCHAR name[MAX_ATOM_LEN + 1];
615
616 if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 ))
617 return FALSE;
618 return UnregisterClassW( name, hInstance );
619 }
620 return UnregisterClassW( (LPCWSTR)className, hInstance );
621 }
622
623 /***********************************************************************
624 * UnregisterClassW (USER32.@)
625 */
626 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
627 {
628 CLASS *classPtr = NULL;
629
630 SERVER_START_REQ( destroy_class )
631 {
632 req->instance = hInstance;
633 if (!(req->atom = get_int_atom_value(className)) && className)
634 wine_server_add_data( req, className, strlenW(className) * sizeof(WCHAR) );
635 if (!wine_server_call_err( req )) classPtr = reply->client_ptr;
636 }
637 SERVER_END_REQ;
638
639 if (classPtr) CLASS_FreeClass( classPtr );
640 return (classPtr != NULL);
641 }
642
643
644 /***********************************************************************
645 * GetClassWord (USER32.@)
646 */
647 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
648 {
649 CLASS *class;
650 WORD retvalue = 0;
651
652 if (offset < 0) return GetClassLongA( hwnd, offset );
653
654 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
655
656 if (class == CLASS_OTHER_PROCESS)
657 {
658 SERVER_START_REQ( set_class_info )
659 {
660 req->window = hwnd;
661 req->flags = 0;
662 req->extra_offset = offset;
663 req->extra_size = sizeof(retvalue);
664 if (!wine_server_call_err( req ))
665 memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) );
666 }
667 SERVER_END_REQ;
668 return retvalue;
669 }
670
671 if (offset <= class->cbClsExtra - sizeof(WORD))
672 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
673 else
674 SetLastError( ERROR_INVALID_INDEX );
675 release_class_ptr( class );
676 return retvalue;
677 }
678
679
680 /***********************************************************************
681 * CLASS_GetClassLong
682 *
683 * Implementation of GetClassLong(Ptr)A/W
684 */
685 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
686 BOOL unicode )
687 {
688 CLASS *class;
689 ULONG_PTR retvalue = 0;
690
691 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
692
693 if (class == CLASS_OTHER_PROCESS)
694 {
695 SERVER_START_REQ( set_class_info )
696 {
697 req->window = hwnd;
698 req->flags = 0;
699 req->extra_offset = (offset >= 0) ? offset : -1;
700 req->extra_size = (offset >= 0) ? size : 0;
701 if (!wine_server_call_err( req ))
702 {
703 switch(offset)
704 {
705 case GCLP_HBRBACKGROUND:
706 case GCLP_HCURSOR:
707 case GCLP_HICON:
708 case GCLP_HICONSM:
709 case GCLP_WNDPROC:
710 case GCLP_MENUNAME:
711 FIXME( "offset %d (%s) not supported on other process window %p\n",
712 offset, SPY_GetClassLongOffsetName(offset), hwnd );
713 SetLastError( ERROR_INVALID_HANDLE );
714 break;
715 case GCL_STYLE:
716 retvalue = reply->old_style;
717 break;
718 case GCL_CBWNDEXTRA:
719 retvalue = reply->old_win_extra;
720 break;
721 case GCL_CBCLSEXTRA:
722 retvalue = reply->old_extra;
723 break;
724 case GCLP_HMODULE:
725 retvalue = (ULONG_PTR)reply->old_instance;
726 break;
727 case GCW_ATOM:
728 retvalue = reply->old_atom;
729 break;
730 default:
731 if (offset >= 0)
732 {
733 if (size == sizeof(DWORD))
734 {
735 DWORD retdword;
736 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
737 retvalue = retdword;
738 }
739 else
740 memcpy( &retvalue, &reply->old_extra_value,
741 sizeof(ULONG_PTR) );
742 }
743 else SetLastError( ERROR_INVALID_INDEX );
744 break;
745 }
746 }
747 }
748 SERVER_END_REQ;
749 return retvalue;
750 }
751
752 if (offset >= 0)
753 {
754 if (offset <= class->cbClsExtra - size)
755 {
756 if (size == sizeof(DWORD))
757 {
758 DWORD retdword;
759 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
760 retvalue = retdword;
761 }
762 else
763 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
764 }
765 else
766 SetLastError( ERROR_INVALID_INDEX );
767 release_class_ptr( class );
768 return retvalue;
769 }
770
771 switch(offset)
772 {
773 case GCLP_HBRBACKGROUND:
774 retvalue = (ULONG_PTR)class->hbrBackground;
775 break;
776 case GCLP_HCURSOR:
777 retvalue = (ULONG_PTR)class->hCursor;
778 break;
779 case GCLP_HICON:
780 retvalue = (ULONG_PTR)class->hIcon;
781 break;
782 case GCLP_HICONSM:
783 retvalue = (ULONG_PTR)class->hIconSm;
784 break;
785 case GCL_STYLE:
786 retvalue = class->style;
787 break;
788 case GCL_CBWNDEXTRA:
789 retvalue = class->cbWndExtra;
790 break;
791 case GCL_CBCLSEXTRA:
792 retvalue = class->cbClsExtra;
793 break;
794 case GCLP_HMODULE:
795 retvalue = (ULONG_PTR)class->hInstance;
796 break;
797 case GCLP_WNDPROC:
798 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
799 break;
800 case GCLP_MENUNAME:
801 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
802 if (unicode)
803 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
804 else
805 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
806 break;
807 case GCW_ATOM:
808 retvalue = class->atomName;
809 break;
810 default:
811 SetLastError( ERROR_INVALID_INDEX );
812 break;
813 }
814 release_class_ptr( class );
815 return retvalue;
816 }
817
818
819 /***********************************************************************
820 * GetClassLongW (USER32.@)
821 */
822 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
823 {
824 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
825 }
826
827
828
829 /***********************************************************************
830 * GetClassLongA (USER32.@)
831 */
832 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
833 {
834 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
835 }
836
837
838 /***********************************************************************
839 * SetClassWord (USER32.@)
840 */
841 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
842 {
843 CLASS *class;
844 WORD retval = 0;
845
846 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
847
848 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
849
850 SERVER_START_REQ( set_class_info )
851 {
852 req->window = hwnd;
853 req->flags = SET_CLASS_EXTRA;
854 req->extra_offset = offset;
855 req->extra_size = sizeof(newval);
856 memcpy( &req->extra_value, &newval, sizeof(newval) );
857 if (!wine_server_call_err( req ))
858 {
859 void *ptr = (char *)(class + 1) + offset;
860 memcpy( &retval, ptr, sizeof(retval) );
861 memcpy( ptr, &newval, sizeof(newval) );
862 }
863 }
864 SERVER_END_REQ;
865 release_class_ptr( class );
866 return retval;
867 }
868
869
870 /***********************************************************************
871 * CLASS_SetClassLong
872 *
873 * Implementation of SetClassLong(Ptr)A/W
874 */
875 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
876 UINT size, BOOL unicode )
877 {
878 CLASS *class;
879 ULONG_PTR retval = 0;
880
881 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
882
883 if (offset >= 0)
884 {
885 if (set_server_info( hwnd, offset, newval, size ))
886 {
887 void *ptr = (char *)(class + 1) + offset;
888 if ( size == sizeof(LONG) )
889 {
890 DWORD retdword;
891 LONG newlong = newval;
892 memcpy( &retdword, ptr, sizeof(DWORD) );
893 memcpy( ptr, &newlong, sizeof(LONG) );
894 retval = retdword;
895 }
896 else
897 {
898 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
899 memcpy( ptr, &newval, sizeof(LONG_PTR) );
900 }
901 }
902 }
903 else switch(offset)
904 {
905 case GCLP_MENUNAME:
906 if ( unicode )
907 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
908 else
909 CLASS_SetMenuNameA( class, (LPCSTR)newval );
910 retval = 0; /* Old value is now meaningless anyway */
911 break;
912 case GCLP_WNDPROC:
913 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
914 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
915 unicode ? (WNDPROC)newval : NULL );
916 break;
917 case GCLP_HBRBACKGROUND:
918 retval = (ULONG_PTR)class->hbrBackground;
919 class->hbrBackground = (HBRUSH)newval;
920 break;
921 case GCLP_HCURSOR:
922 retval = (ULONG_PTR)class->hCursor;
923 class->hCursor = (HCURSOR)newval;
924 break;
925 case GCLP_HICON:
926 retval = (ULONG_PTR)class->hIcon;
927 class->hIcon = (HICON)newval;
928 break;
929 case GCLP_HICONSM:
930 retval = (ULONG_PTR)class->hIconSm;
931 class->hIconSm = (HICON)newval;
932 break;
933 case GCL_STYLE:
934 if (!set_server_info( hwnd, offset, newval, size )) break;
935 retval = class->style;
936 class->style = newval;
937 break;
938 case GCL_CBWNDEXTRA:
939 if (!set_server_info( hwnd, offset, newval, size )) break;
940 retval = class->cbWndExtra;
941 class->cbWndExtra = newval;
942 break;
943 case GCLP_HMODULE:
944 if (!set_server_info( hwnd, offset, newval, size )) break;
945 retval = (ULONG_PTR)class->hInstance;
946 class->hInstance = (HINSTANCE)newval;
947 break;
948 case GCW_ATOM:
949 if (!set_server_info( hwnd, offset, newval, size )) break;
950 retval = class->atomName;
951 class->atomName = newval;
952 GlobalGetAtomNameW( newval, class->name, sizeof(class->name)/sizeof(WCHAR) );
953 break;
954 case GCL_CBCLSEXTRA: /* cannot change this one */
955 SetLastError( ERROR_INVALID_PARAMETER );
956 break;
957 default:
958 SetLastError( ERROR_INVALID_INDEX );
959 break;
960 }
961 release_class_ptr( class );
962 return retval;
963 }
964
965
966 /***********************************************************************
967 * SetClassLongW (USER32.@)
968 */
969 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
970 {
971 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE );
972 }
973
974
975 /***********************************************************************
976 * SetClassLongA (USER32.@)
977 */
978 DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
979 {
980 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
981 }
982
983
984 /***********************************************************************
985 * GetClassNameA (USER32.@)
986 */
987 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
988 {
989 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
990 DWORD len;
991
992 if (count <= 0) return 0;
993 if (!GetClassNameW( hwnd, tmpbuf, sizeof(tmpbuf)/sizeof(WCHAR) )) return 0;
994 RtlUnicodeToMultiByteN( buffer, count - 1, &len, tmpbuf, strlenW(tmpbuf) * sizeof(WCHAR) );
995 buffer[len] = 0;
996 return len;
997 }
998
999
1000 /***********************************************************************
1001 * GetClassNameW (USER32.@)
1002 */
1003 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1004 {
1005 CLASS *class;
1006 INT ret;
1007
1008 TRACE("%p %p %d\n", hwnd, buffer, count);
1009
1010 if (count <= 0) return 0;
1011
1012 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
1013
1014 if (class == CLASS_OTHER_PROCESS)
1015 {
1016 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
1017
1018 ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 );
1019 if (ret)
1020 {
1021 ret = min(count - 1, ret);
1022 memcpy(buffer, tmpbuf, ret * sizeof(WCHAR));
1023 buffer[ret] = 0;
1024 }
1025 }
1026 else
1027 {
1028 lstrcpynW( buffer, class->name, count );
1029 release_class_ptr( class );
1030 ret = strlenW( buffer );
1031 }
1032 return ret;
1033 }
1034
1035
1036 /***********************************************************************
1037 * RealGetWindowClassA (USER32.@)
1038 */
1039 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
1040 {
1041 return GetClassNameA( hwnd, buffer, count );
1042 }
1043
1044
1045 /***********************************************************************
1046 * RealGetWindowClassW (USER32.@)
1047 */
1048 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
1049 {
1050 return GetClassNameW( hwnd, buffer, count );
1051 }
1052
1053
1054 /***********************************************************************
1055 * GetClassInfoA (USER32.@)
1056 */
1057 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1058 {
1059 WNDCLASSEXA wcex;
1060 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
1061
1062 if (ret)
1063 {
1064 wc->style = wcex.style;
1065 wc->lpfnWndProc = wcex.lpfnWndProc;
1066 wc->cbClsExtra = wcex.cbClsExtra;
1067 wc->cbWndExtra = wcex.cbWndExtra;
1068 wc->hInstance = wcex.hInstance;
1069 wc->hIcon = wcex.hIcon;
1070 wc->hCursor = wcex.hCursor;
1071 wc->hbrBackground = wcex.hbrBackground;
1072 wc->lpszMenuName = wcex.lpszMenuName;
1073 wc->lpszClassName = wcex.lpszClassName;
1074 }
1075 return ret;
1076 }
1077
1078
1079 /***********************************************************************
1080 * GetClassInfoW (USER32.@)
1081 */
1082 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1083 {
1084 WNDCLASSEXW wcex;
1085 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
1086
1087 if (ret)
1088 {
1089 wc->style = wcex.style;
1090 wc->lpfnWndProc = wcex.lpfnWndProc;
1091 wc->cbClsExtra = wcex.cbClsExtra;
1092 wc->cbWndExtra = wcex.cbWndExtra;
1093 wc->hInstance = wcex.hInstance;
1094 wc->hIcon = wcex.hIcon;
1095 wc->hCursor = wcex.hCursor;
1096 wc->hbrBackground = wcex.hbrBackground;
1097 wc->lpszMenuName = wcex.lpszMenuName;
1098 wc->lpszClassName = wcex.lpszClassName;
1099 }
1100 return ret;
1101 }
1102
1103
1104 /***********************************************************************
1105 * GetClassInfoExA (USER32.@)
1106 */
1107 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1108 {
1109 ATOM atom;
1110 CLASS *classPtr;
1111
1112 TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc);
1113
1114 if (!hInstance) hInstance = user32_module;
1115
1116 if (!IS_INTRESOURCE(name))
1117 {
1118 WCHAR nameW[MAX_ATOM_LEN + 1];
1119 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) ))
1120 return FALSE;
1121 classPtr = CLASS_FindClass( nameW, hInstance );
1122 }
1123 else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance );
1124
1125 if (!classPtr)
1126 {
1127 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1128 return FALSE;
1129 }
1130 wc->style = classPtr->style;
1131 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE );
1132 wc->cbClsExtra = classPtr->cbClsExtra;
1133 wc->cbWndExtra = classPtr->cbWndExtra;
1134 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1135 wc->hIcon = classPtr->hIcon;
1136 wc->hIconSm = classPtr->hIconSm;
1137 wc->hCursor = classPtr->hCursor;
1138 wc->hbrBackground = classPtr->hbrBackground;
1139 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1140 wc->lpszClassName = name;
1141 atom = classPtr->atomName;
1142 release_class_ptr( classPtr );
1143
1144 /* We must return the atom of the class here instead of just TRUE. */
1145 return atom;
1146 }
1147
1148
1149 /***********************************************************************
1150 * GetClassInfoExW (USER32.@)
1151 */
1152 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1153 {
1154 ATOM atom;
1155 CLASS *classPtr;
1156
1157 TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc);
1158
1159 if (!hInstance) hInstance = user32_module;
1160
1161 if (!(classPtr = CLASS_FindClass( name, hInstance )))
1162 {
1163 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1164 return FALSE;
1165 }
1166 wc->style = classPtr->style;
1167 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE );
1168 wc->cbClsExtra = classPtr->cbClsExtra;
1169 wc->cbWndExtra = classPtr->cbWndExtra;
1170 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1171 wc->hIcon = (HICON)classPtr->hIcon;
1172 wc->hIconSm = (HICON)classPtr->hIconSm;
1173 wc->hCursor = (HCURSOR)classPtr->hCursor;
1174 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1175 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1176 wc->lpszClassName = name;
1177 atom = classPtr->atomName;
1178 release_class_ptr( classPtr );
1179
1180 /* We must return the atom of the class here instead of just TRUE. */
1181 return atom;
1182 }
1183
1184
1185 #if 0 /* toolhelp is in kernel, so this cannot work */
1186
1187 /***********************************************************************
1188 * ClassFirst (TOOLHELP.69)
1189 */
1190 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1191 {
1192 TRACE("%p\n",pClassEntry);
1193 pClassEntry->wNext = 1;
1194 return ClassNext16( pClassEntry );
1195 }
1196
1197
1198 /***********************************************************************
1199 * ClassNext (TOOLHELP.70)
1200 */
1201 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1202 {
1203 int i;
1204 CLASS *class = firstClass;
1205
1206 TRACE("%p\n",pClassEntry);
1207
1208 if (!pClassEntry->wNext) return FALSE;
1209 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1210 if (!class)
1211 {
1212 pClassEntry->wNext = 0;
1213 return FALSE;
1214 }
1215 pClassEntry->hInst = class->hInstance;
1216 pClassEntry->wNext++;
1217 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1218 sizeof(pClassEntry->szClassName) );
1219 return TRUE;
1220 }
1221 #endif
1222
1223 /* 64bit versions */
1224
1225 #ifdef GetClassLongPtrA
1226 #undef GetClassLongPtrA
1227 #endif
1228
1229 #ifdef GetClassLongPtrW
1230 #undef GetClassLongPtrW
1231 #endif
1232
1233 #ifdef SetClassLongPtrA
1234 #undef SetClassLongPtrA
1235 #endif
1236
1237 #ifdef SetClassLongPtrW
1238 #undef SetClassLongPtrW
1239 #endif
1240
1241 /***********************************************************************
1242 * GetClassLongPtrA (USER32.@)
1243 */
1244 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1245 {
1246 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1247 }
1248
1249 /***********************************************************************
1250 * GetClassLongPtrW (USER32.@)
1251 */
1252 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1253 {
1254 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1255 }
1256
1257 /***********************************************************************
1258 * SetClassLongPtrW (USER32.@)
1259 */
1260 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1261 {
1262 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1263 }
1264
1265 /***********************************************************************
1266 * SetClassLongPtrA (USER32.@)
1267 */
1268 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1269 {
1270 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );
1271 }
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