2 * Window classes functions
4 * Copyright 1993, 1996, 2003 Alexandre Julliard
5 * Copyright 1998 Juergen Schmied (jsch)
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.
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.
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
23 #include "wine/port.h"
34 #include "wine/unicode.h"
36 #include "user_private.h"
38 #include "wine/server.h"
39 #include "wine/list.h"
40 #include "wine/debug.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(class);
44 #define MAX_ATOM_LEN 255 /* from dlls/kernel32/atom.c */
46 typedef struct tagCLASS
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];
65 static struct list class_list = LIST_INIT( class_list );
67 #define CLASS_OTHER_PROCESS ((CLASS *)1)
69 /***********************************************************************
72 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
74 WND *ptr = WIN_GetPtr( hwnd );
78 if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class;
79 if (!write_access) return CLASS_OTHER_PROCESS;
81 /* modifying classes in other processes is not allowed */
82 if (ptr == WND_DESKTOP || IsWindow( hwnd ))
84 SetLastError( ERROR_ACCESS_DENIED );
88 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
93 /***********************************************************************
96 static inline void release_class_ptr( CLASS *ptr )
102 /***********************************************************************
105 ATOM get_int_atom_value( LPCWSTR name )
109 if (IS_INTRESOURCE(name)) return LOWORD(name);
110 if (*name++ != '#') return 0;
113 if (*name < '0' || *name > '9') return 0;
114 ret = ret * 10 + *name++ - '0';
115 if (ret > 0xffff) return 0;
121 /***********************************************************************
124 * Set class info with the wine server.
126 static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size )
130 SERVER_START_REQ( set_class_info )
132 req->window = wine_server_user_handle( hwnd );
133 req->extra_offset = -1;
137 req->flags = SET_CLASS_ATOM;
138 req->atom = LOWORD(newval);
140 req->flags = SET_CLASS_STYLE;
144 req->flags = SET_CLASS_WINEXTRA;
145 req->win_extra = newval;
148 req->flags = SET_CLASS_INSTANCE;
149 req->instance = wine_server_client_ptr( (void *)newval );
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) )
158 LONG newlong = newval;
159 memcpy( &req->extra_value, &newlong, sizeof(LONG) );
162 memcpy( &req->extra_value, &newval, sizeof(LONG_PTR) );
165 ret = !wine_server_call_err( req );
172 /***********************************************************************
175 * Get the menu name as a ASCII string.
177 static inline LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
179 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
180 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
184 /***********************************************************************
187 * Get the menu name as a Unicode string.
189 static inline LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
191 return classPtr->menuName;
195 /***********************************************************************
198 * Set the menu name in a class structure by copying the string.
200 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
202 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
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 );
211 else classPtr->menuName = (LPWSTR)name;
215 /***********************************************************************
218 * Set the menu name in a class structure by copying the string.
220 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
222 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
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 );
232 else classPtr->menuName = (LPWSTR)name;
236 /***********************************************************************
239 * Free a class structure.
241 static void CLASS_FreeClass( CLASS *classPtr )
243 TRACE("%p\n", classPtr);
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 );
257 /***********************************************************************
258 * CLASS_FreeModuleClasses
260 void CLASS_FreeModuleClasses( HMODULE16 hModule )
262 struct list *ptr, *next;
264 TRACE("0x%08x\n", hModule);
267 for (ptr = list_head( &class_list ); ptr; ptr = next)
269 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
270 next = list_next( &class_list, ptr );
271 if (class->hInstance == HINSTANCE_32(hModule))
275 SERVER_START_REQ( destroy_class )
277 req->atom = class->atomName;
278 req->instance = wine_server_client_ptr( class->hInstance );
279 ret = !wine_server_call_err( req );
282 if (ret) CLASS_FreeClass( class );
289 /***********************************************************************
292 * Return a pointer to the class.
293 * hinstance has been normalized by the caller.
295 static CLASS *CLASS_FindClass( LPCWSTR name, HINSTANCE hinstance )
298 ATOM atom = get_int_atom_value( name );
302 LIST_FOR_EACH( ptr, &class_list )
304 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
307 if (class->atomName != atom) continue;
311 if (!name || strcmpiW( class->name, name )) continue;
313 if (!hinstance || !class->local || class->hInstance == hinstance)
315 TRACE("%s %p -> %p\n", debugstr_w(name), hinstance, class);
320 TRACE("%s %p -> not found\n", debugstr_w(name), hinstance);
325 /***********************************************************************
326 * CLASS_RegisterClass
328 * The real RegisterClass() functionality.
330 static CLASS *CLASS_RegisterClass( LPCWSTR name, HINSTANCE hInstance, BOOL local,
331 DWORD style, INT classExtra, INT winExtra )
336 TRACE("name=%s hinst=%p style=0x%x clExtr=0x%x winExtr=0x%x\n",
337 debugstr_w(name), hInstance, style, classExtra, winExtra );
339 /* Fix the extra bytes value */
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 );
346 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
347 if (!classPtr) return NULL;
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) );
353 SERVER_START_REQ( create_class )
357 req->instance = wine_server_client_ptr( hInstance );
358 req->extra = classExtra;
359 req->win_extra = winExtra;
360 req->client_ptr = wine_server_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;
369 HeapFree( GetProcessHeap(), 0, classPtr );
373 classPtr->style = style;
374 classPtr->local = local;
375 classPtr->cbWndExtra = winExtra;
376 classPtr->cbClsExtra = classExtra;
377 classPtr->hInstance = hInstance;
379 /* Other non-null values must be set by caller */
382 if (local) list_add_head( &class_list, &classPtr->entry );
383 else list_add_tail( &class_list, &classPtr->entry );
388 /***********************************************************************
391 * Register a builtin control class.
392 * This allows having both ASCII and Unicode winprocs for the same class.
394 static WNDPROC register_builtin( const struct builtin_class_descr *descr )
398 if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE,
399 descr->style, 0, descr->extra ))) return 0;
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;
409 /***********************************************************************
410 * CLASS_RegisterBuiltinClasses
412 void CLASS_RegisterBuiltinClasses(void)
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( &MESSAGE_builtin_class );
425 register_builtin( &SCROLL_builtin_class );
426 register_builtin( &STATIC_builtin_class );
428 /* the DefWindowProc winprocs are magic too */
429 WINPROC_AllocProc( DefWindowProcA, DefWindowProcW );
433 /***********************************************************************
436 WNDPROC get_class_winproc( CLASS *class )
438 return class->winproc;
442 /***********************************************************************
445 struct dce *get_class_dce( CLASS *class )
451 /***********************************************************************
454 struct dce *set_class_dce( CLASS *class, struct dce *dce )
456 if (class->dce) return class->dce; /* already set, don't change it */
462 /***********************************************************************
463 * RegisterClassA (USER32.@)
465 * Register a window class.
468 * >0: Unique identifier
471 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
475 wcex.cbSize = sizeof(wcex);
476 wcex.style = wc->style;
477 wcex.lpfnWndProc = wc->lpfnWndProc;
478 wcex.cbClsExtra = wc->cbClsExtra;
479 wcex.cbWndExtra = wc->cbWndExtra;
480 wcex.hInstance = wc->hInstance;
481 wcex.hIcon = wc->hIcon;
482 wcex.hCursor = wc->hCursor;
483 wcex.hbrBackground = wc->hbrBackground;
484 wcex.lpszMenuName = wc->lpszMenuName;
485 wcex.lpszClassName = wc->lpszClassName;
487 return RegisterClassExA( &wcex );
491 /***********************************************************************
492 * RegisterClassW (USER32.@)
494 * See RegisterClassA.
496 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
500 wcex.cbSize = sizeof(wcex);
501 wcex.style = wc->style;
502 wcex.lpfnWndProc = wc->lpfnWndProc;
503 wcex.cbClsExtra = wc->cbClsExtra;
504 wcex.cbWndExtra = wc->cbWndExtra;
505 wcex.hInstance = wc->hInstance;
506 wcex.hIcon = wc->hIcon;
507 wcex.hCursor = wc->hCursor;
508 wcex.hbrBackground = wc->hbrBackground;
509 wcex.lpszMenuName = wc->lpszMenuName;
510 wcex.lpszClassName = wc->lpszClassName;
512 return RegisterClassExW( &wcex );
516 /***********************************************************************
517 * RegisterClassExA (USER32.@)
519 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
525 if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 ||
526 wc->hInstance == user32_module) /* we can't register a class for user32 */
528 SetLastError( ERROR_INVALID_PARAMETER );
531 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
533 if (!IS_INTRESOURCE(wc->lpszClassName))
535 WCHAR name[MAX_ATOM_LEN + 1];
537 if (!MultiByteToWideChar( CP_ACP, 0, wc->lpszClassName, -1, name, MAX_ATOM_LEN + 1 )) return 0;
538 classPtr = CLASS_RegisterClass( name, instance, !(wc->style & CS_GLOBALCLASS),
539 wc->style, wc->cbClsExtra, wc->cbWndExtra );
543 classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance,
544 !(wc->style & CS_GLOBALCLASS), wc->style,
545 wc->cbClsExtra, wc->cbWndExtra );
547 if (!classPtr) return 0;
548 atom = classPtr->atomName;
550 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
551 debugstr_a(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
552 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
554 classPtr->hIcon = wc->hIcon;
555 classPtr->hIconSm = wc->hIconSm;
556 classPtr->hCursor = wc->hCursor;
557 classPtr->hbrBackground = wc->hbrBackground;
558 classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, NULL );
559 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
560 release_class_ptr( classPtr );
565 /***********************************************************************
566 * RegisterClassExW (USER32.@)
568 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
574 if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 ||
575 wc->hInstance == user32_module) /* we can't register a class for user32 */
577 SetLastError( ERROR_INVALID_PARAMETER );
580 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
582 if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS),
583 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
586 atom = classPtr->atomName;
588 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
589 debugstr_w(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
590 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
592 classPtr->hIcon = wc->hIcon;
593 classPtr->hIconSm = wc->hIconSm;
594 classPtr->hCursor = wc->hCursor;
595 classPtr->hbrBackground = wc->hbrBackground;
596 classPtr->winproc = WINPROC_AllocProc( NULL, wc->lpfnWndProc );
597 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
598 release_class_ptr( classPtr );
603 /***********************************************************************
604 * UnregisterClassA (USER32.@)
606 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
608 if (!IS_INTRESOURCE(className))
610 WCHAR name[MAX_ATOM_LEN + 1];
612 if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 ))
614 return UnregisterClassW( name, hInstance );
616 return UnregisterClassW( (LPCWSTR)className, hInstance );
619 /***********************************************************************
620 * UnregisterClassW (USER32.@)
622 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
624 CLASS *classPtr = NULL;
626 SERVER_START_REQ( destroy_class )
628 req->instance = wine_server_client_ptr( hInstance );
629 if (!(req->atom = get_int_atom_value(className)) && className)
630 wine_server_add_data( req, className, strlenW(className) * sizeof(WCHAR) );
631 if (!wine_server_call_err( req )) classPtr = wine_server_get_ptr( reply->client_ptr );
635 if (classPtr) CLASS_FreeClass( classPtr );
636 return (classPtr != NULL);
640 /***********************************************************************
641 * GetClassWord (USER32.@)
643 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
648 if (offset < 0) return GetClassLongA( hwnd, offset );
650 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
652 if (class == CLASS_OTHER_PROCESS)
654 SERVER_START_REQ( set_class_info )
656 req->window = wine_server_user_handle( hwnd );
658 req->extra_offset = offset;
659 req->extra_size = sizeof(retvalue);
660 if (!wine_server_call_err( req ))
661 memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) );
667 if (offset <= class->cbClsExtra - sizeof(WORD))
668 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
670 SetLastError( ERROR_INVALID_INDEX );
671 release_class_ptr( class );
676 /***********************************************************************
679 * Implementation of GetClassLong(Ptr)A/W
681 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
685 ULONG_PTR retvalue = 0;
687 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
689 if (class == CLASS_OTHER_PROCESS)
691 SERVER_START_REQ( set_class_info )
693 req->window = wine_server_user_handle( hwnd );
695 req->extra_offset = (offset >= 0) ? offset : -1;
696 req->extra_size = (offset >= 0) ? size : 0;
697 if (!wine_server_call_err( req ))
701 case GCLP_HBRBACKGROUND:
707 FIXME( "offset %d (%s) not supported on other process window %p\n",
708 offset, SPY_GetClassLongOffsetName(offset), hwnd );
709 SetLastError( ERROR_INVALID_HANDLE );
712 retvalue = reply->old_style;
715 retvalue = reply->old_win_extra;
718 retvalue = reply->old_extra;
721 retvalue = (ULONG_PTR)wine_server_get_ptr( reply->old_instance );
724 retvalue = reply->old_atom;
729 if (size == sizeof(DWORD))
732 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
736 memcpy( &retvalue, &reply->old_extra_value,
739 else SetLastError( ERROR_INVALID_INDEX );
750 if (offset <= class->cbClsExtra - size)
752 if (size == sizeof(DWORD))
755 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
759 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
762 SetLastError( ERROR_INVALID_INDEX );
763 release_class_ptr( class );
769 case GCLP_HBRBACKGROUND:
770 retvalue = (ULONG_PTR)class->hbrBackground;
773 retvalue = (ULONG_PTR)class->hCursor;
776 retvalue = (ULONG_PTR)class->hIcon;
779 retvalue = (ULONG_PTR)class->hIconSm;
782 retvalue = class->style;
785 retvalue = class->cbWndExtra;
788 retvalue = class->cbClsExtra;
791 retvalue = (ULONG_PTR)class->hInstance;
794 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
797 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
799 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
801 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
804 retvalue = class->atomName;
807 SetLastError( ERROR_INVALID_INDEX );
810 release_class_ptr( class );
815 /***********************************************************************
816 * GetClassLongW (USER32.@)
818 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
820 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
825 /***********************************************************************
826 * GetClassLongA (USER32.@)
828 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
830 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
834 /***********************************************************************
835 * SetClassWord (USER32.@)
837 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
842 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
844 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
846 SERVER_START_REQ( set_class_info )
848 req->window = wine_server_user_handle( hwnd );
849 req->flags = SET_CLASS_EXTRA;
850 req->extra_offset = offset;
851 req->extra_size = sizeof(newval);
852 memcpy( &req->extra_value, &newval, sizeof(newval) );
853 if (!wine_server_call_err( req ))
855 void *ptr = (char *)(class + 1) + offset;
856 memcpy( &retval, ptr, sizeof(retval) );
857 memcpy( ptr, &newval, sizeof(newval) );
861 release_class_ptr( class );
866 /***********************************************************************
869 * Implementation of SetClassLong(Ptr)A/W
871 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
872 UINT size, BOOL unicode )
875 ULONG_PTR retval = 0;
877 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
881 if (set_server_info( hwnd, offset, newval, size ))
883 void *ptr = (char *)(class + 1) + offset;
884 if ( size == sizeof(LONG) )
887 LONG newlong = newval;
888 memcpy( &retdword, ptr, sizeof(DWORD) );
889 memcpy( ptr, &newlong, sizeof(LONG) );
894 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
895 memcpy( ptr, &newval, sizeof(LONG_PTR) );
903 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
905 CLASS_SetMenuNameA( class, (LPCSTR)newval );
906 retval = 0; /* Old value is now meaningless anyway */
909 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
910 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
911 unicode ? (WNDPROC)newval : NULL );
913 case GCLP_HBRBACKGROUND:
914 retval = (ULONG_PTR)class->hbrBackground;
915 class->hbrBackground = (HBRUSH)newval;
918 retval = (ULONG_PTR)class->hCursor;
919 class->hCursor = (HCURSOR)newval;
922 retval = (ULONG_PTR)class->hIcon;
923 class->hIcon = (HICON)newval;
926 retval = (ULONG_PTR)class->hIconSm;
927 class->hIconSm = (HICON)newval;
930 if (!set_server_info( hwnd, offset, newval, size )) break;
931 retval = class->style;
932 class->style = newval;
935 if (!set_server_info( hwnd, offset, newval, size )) break;
936 retval = class->cbWndExtra;
937 class->cbWndExtra = newval;
940 if (!set_server_info( hwnd, offset, newval, size )) break;
941 retval = (ULONG_PTR)class->hInstance;
942 class->hInstance = (HINSTANCE)newval;
945 if (!set_server_info( hwnd, offset, newval, size )) break;
946 retval = class->atomName;
947 class->atomName = newval;
948 GlobalGetAtomNameW( newval, class->name, sizeof(class->name)/sizeof(WCHAR) );
950 case GCL_CBCLSEXTRA: /* cannot change this one */
951 SetLastError( ERROR_INVALID_PARAMETER );
954 SetLastError( ERROR_INVALID_INDEX );
957 release_class_ptr( class );
962 /***********************************************************************
963 * SetClassLongW (USER32.@)
965 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
967 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE );
971 /***********************************************************************
972 * SetClassLongA (USER32.@)
974 DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
976 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
980 /***********************************************************************
981 * GetClassNameA (USER32.@)
983 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
985 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
988 if (count <= 0) return 0;
989 if (!GetClassNameW( hwnd, tmpbuf, sizeof(tmpbuf)/sizeof(WCHAR) )) return 0;
990 RtlUnicodeToMultiByteN( buffer, count - 1, &len, tmpbuf, strlenW(tmpbuf) * sizeof(WCHAR) );
996 /***********************************************************************
997 * GetClassNameW (USER32.@)
999 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1004 TRACE("%p %p %d\n", hwnd, buffer, count);
1006 if (count <= 0) return 0;
1008 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
1010 if (class == CLASS_OTHER_PROCESS)
1012 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
1014 ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 );
1017 ret = min(count - 1, ret);
1018 memcpy(buffer, tmpbuf, ret * sizeof(WCHAR));
1024 lstrcpynW( buffer, class->name, count );
1025 release_class_ptr( class );
1026 ret = strlenW( buffer );
1032 /***********************************************************************
1033 * RealGetWindowClassA (USER32.@)
1035 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
1037 return GetClassNameA( hwnd, buffer, count );
1041 /***********************************************************************
1042 * RealGetWindowClassW (USER32.@)
1044 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
1046 return GetClassNameW( hwnd, buffer, count );
1050 /***********************************************************************
1051 * GetClassInfoA (USER32.@)
1053 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1056 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
1060 wc->style = wcex.style;
1061 wc->lpfnWndProc = wcex.lpfnWndProc;
1062 wc->cbClsExtra = wcex.cbClsExtra;
1063 wc->cbWndExtra = wcex.cbWndExtra;
1064 wc->hInstance = wcex.hInstance;
1065 wc->hIcon = wcex.hIcon;
1066 wc->hCursor = wcex.hCursor;
1067 wc->hbrBackground = wcex.hbrBackground;
1068 wc->lpszMenuName = wcex.lpszMenuName;
1069 wc->lpszClassName = wcex.lpszClassName;
1075 /***********************************************************************
1076 * GetClassInfoW (USER32.@)
1078 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1081 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
1085 wc->style = wcex.style;
1086 wc->lpfnWndProc = wcex.lpfnWndProc;
1087 wc->cbClsExtra = wcex.cbClsExtra;
1088 wc->cbWndExtra = wcex.cbWndExtra;
1089 wc->hInstance = wcex.hInstance;
1090 wc->hIcon = wcex.hIcon;
1091 wc->hCursor = wcex.hCursor;
1092 wc->hbrBackground = wcex.hbrBackground;
1093 wc->lpszMenuName = wcex.lpszMenuName;
1094 wc->lpszClassName = wcex.lpszClassName;
1100 /***********************************************************************
1101 * GetClassInfoExA (USER32.@)
1103 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1108 TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc);
1110 if (!hInstance) hInstance = user32_module;
1112 if (!IS_INTRESOURCE(name))
1114 WCHAR nameW[MAX_ATOM_LEN + 1];
1115 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) ))
1117 classPtr = CLASS_FindClass( nameW, hInstance );
1119 else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance );
1123 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1126 wc->style = classPtr->style;
1127 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE );
1128 wc->cbClsExtra = classPtr->cbClsExtra;
1129 wc->cbWndExtra = classPtr->cbWndExtra;
1130 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1131 wc->hIcon = classPtr->hIcon;
1132 wc->hIconSm = classPtr->hIconSm;
1133 wc->hCursor = classPtr->hCursor;
1134 wc->hbrBackground = classPtr->hbrBackground;
1135 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1136 wc->lpszClassName = name;
1137 atom = classPtr->atomName;
1138 release_class_ptr( classPtr );
1140 /* We must return the atom of the class here instead of just TRUE. */
1145 /***********************************************************************
1146 * GetClassInfoExW (USER32.@)
1148 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1153 TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc);
1155 if (!hInstance) hInstance = user32_module;
1157 if (!(classPtr = CLASS_FindClass( name, hInstance )))
1159 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1162 wc->style = classPtr->style;
1163 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE );
1164 wc->cbClsExtra = classPtr->cbClsExtra;
1165 wc->cbWndExtra = classPtr->cbWndExtra;
1166 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1167 wc->hIcon = classPtr->hIcon;
1168 wc->hIconSm = classPtr->hIconSm;
1169 wc->hCursor = classPtr->hCursor;
1170 wc->hbrBackground = classPtr->hbrBackground;
1171 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1172 wc->lpszClassName = name;
1173 atom = classPtr->atomName;
1174 release_class_ptr( classPtr );
1176 /* We must return the atom of the class here instead of just TRUE. */
1181 #if 0 /* toolhelp is in kernel, so this cannot work */
1183 /***********************************************************************
1184 * ClassFirst (TOOLHELP.69)
1186 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1188 TRACE("%p\n",pClassEntry);
1189 pClassEntry->wNext = 1;
1190 return ClassNext16( pClassEntry );
1194 /***********************************************************************
1195 * ClassNext (TOOLHELP.70)
1197 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1200 CLASS *class = firstClass;
1202 TRACE("%p\n",pClassEntry);
1204 if (!pClassEntry->wNext) return FALSE;
1205 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1208 pClassEntry->wNext = 0;
1211 pClassEntry->hInst = class->hInstance;
1212 pClassEntry->wNext++;
1213 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1214 sizeof(pClassEntry->szClassName) );
1219 /* 64bit versions */
1221 #ifdef GetClassLongPtrA
1222 #undef GetClassLongPtrA
1225 #ifdef GetClassLongPtrW
1226 #undef GetClassLongPtrW
1229 #ifdef SetClassLongPtrA
1230 #undef SetClassLongPtrA
1233 #ifdef SetClassLongPtrW
1234 #undef SetClassLongPtrW
1237 /***********************************************************************
1238 * GetClassLongPtrA (USER32.@)
1240 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1242 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1245 /***********************************************************************
1246 * GetClassLongPtrW (USER32.@)
1248 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1250 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1253 /***********************************************************************
1254 * SetClassLongPtrW (USER32.@)
1256 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1258 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1261 /***********************************************************************
1262 * SetClassLongPtrA (USER32.@)
1264 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1266 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );