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 )
133 req->extra_offset = -1;
137 req->flags = SET_CLASS_ATOM;
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 = (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 = 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 < 0 || winExtra < 0)
343 SetLastError( ERROR_INVALID_PARAMETER );
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 );
351 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
352 if (!classPtr) return NULL;
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) );
358 SERVER_START_REQ( create_class )
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;
374 HeapFree( GetProcessHeap(), 0, classPtr );
378 classPtr->style = style;
379 classPtr->local = local;
380 classPtr->cbWndExtra = winExtra;
381 classPtr->cbClsExtra = classExtra;
382 classPtr->hInstance = hInstance;
384 /* Other non-null values must be set by caller */
387 if (local) list_add_head( &class_list, &classPtr->entry );
388 else list_add_tail( &class_list, &classPtr->entry );
393 /***********************************************************************
396 * Register a builtin control class.
397 * This allows having both ASCII and Unicode winprocs for the same class.
399 static WNDPROC register_builtin( const struct builtin_class_descr *descr )
403 if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE,
404 descr->style, 0, descr->extra ))) return 0;
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;
414 /***********************************************************************
415 * CLASS_RegisterBuiltinClasses
417 void CLASS_RegisterBuiltinClasses(void)
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 );
432 /* the DefWindowProc winprocs are magic too */
433 WINPROC_AllocProc( DefWindowProcA, DefWindowProcW );
437 /***********************************************************************
440 WNDPROC get_class_winproc( CLASS *class )
442 return class->winproc;
446 /***********************************************************************
449 struct dce *get_class_dce( CLASS *class )
455 /***********************************************************************
458 struct dce *set_class_dce( CLASS *class, struct dce *dce )
460 if (class->dce) return class->dce; /* already set, don't change it */
466 /***********************************************************************
467 * RegisterClassA (USER32.@)
469 * Register a window class.
472 * >0: Unique identifier
475 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
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;
491 return RegisterClassExA( &wcex );
495 /***********************************************************************
496 * RegisterClassW (USER32.@)
498 * See RegisterClassA.
500 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
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;
516 return RegisterClassExW( &wcex );
520 /***********************************************************************
521 * RegisterClassExA (USER32.@)
523 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
529 if (wc->hInstance == user32_module)
531 /* we can't register a class for user32 */
532 SetLastError( ERROR_INVALID_PARAMETER );
535 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
537 if (!IS_INTRESOURCE(wc->lpszClassName))
539 WCHAR name[MAX_ATOM_LEN + 1];
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 );
547 classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance,
548 !(wc->style & CS_GLOBALCLASS), wc->style,
549 wc->cbClsExtra, wc->cbWndExtra );
551 if (!classPtr) return 0;
552 atom = classPtr->atomName;
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 );
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 );
569 /***********************************************************************
570 * RegisterClassExW (USER32.@)
572 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
578 if (wc->hInstance == user32_module)
580 /* we can't register a class for user32 */
581 SetLastError( ERROR_INVALID_PARAMETER );
584 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
586 if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS),
587 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
590 atom = classPtr->atomName;
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 );
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 );
607 /***********************************************************************
608 * UnregisterClassA (USER32.@)
610 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
612 if (!IS_INTRESOURCE(className))
614 WCHAR name[MAX_ATOM_LEN + 1];
616 if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 ))
618 return UnregisterClassW( name, hInstance );
620 return UnregisterClassW( (LPCWSTR)className, hInstance );
623 /***********************************************************************
624 * UnregisterClassW (USER32.@)
626 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
628 CLASS *classPtr = NULL;
630 SERVER_START_REQ( destroy_class )
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;
639 if (classPtr) CLASS_FreeClass( classPtr );
640 return (classPtr != NULL);
644 /***********************************************************************
645 * GetClassWord (USER32.@)
647 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
652 if (offset < 0) return GetClassLongA( hwnd, offset );
654 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
656 if (class == CLASS_OTHER_PROCESS)
658 SERVER_START_REQ( set_class_info )
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) );
671 if (offset <= class->cbClsExtra - sizeof(WORD))
672 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
674 SetLastError( ERROR_INVALID_INDEX );
675 release_class_ptr( class );
680 /***********************************************************************
683 * Implementation of GetClassLong(Ptr)A/W
685 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
689 ULONG_PTR retvalue = 0;
691 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
693 if (class == CLASS_OTHER_PROCESS)
695 SERVER_START_REQ( set_class_info )
699 req->extra_offset = (offset >= 0) ? offset : -1;
700 req->extra_size = (offset >= 0) ? size : 0;
701 if (!wine_server_call_err( req ))
705 case GCLP_HBRBACKGROUND:
711 FIXME( "offset %d (%s) not supported on other process window %p\n",
712 offset, SPY_GetClassLongOffsetName(offset), hwnd );
713 SetLastError( ERROR_INVALID_HANDLE );
716 retvalue = reply->old_style;
719 retvalue = reply->old_win_extra;
722 retvalue = reply->old_extra;
725 retvalue = (ULONG_PTR)reply->old_instance;
728 retvalue = reply->old_atom;
733 if (size == sizeof(DWORD))
736 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
740 memcpy( &retvalue, &reply->old_extra_value,
743 else SetLastError( ERROR_INVALID_INDEX );
754 if (offset <= class->cbClsExtra - size)
756 if (size == sizeof(DWORD))
759 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
763 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
766 SetLastError( ERROR_INVALID_INDEX );
767 release_class_ptr( class );
773 case GCLP_HBRBACKGROUND:
774 retvalue = (ULONG_PTR)class->hbrBackground;
777 retvalue = (ULONG_PTR)class->hCursor;
780 retvalue = (ULONG_PTR)class->hIcon;
783 retvalue = (ULONG_PTR)class->hIconSm;
786 retvalue = class->style;
789 retvalue = class->cbWndExtra;
792 retvalue = class->cbClsExtra;
795 retvalue = (ULONG_PTR)class->hInstance;
798 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
801 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
803 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
805 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
808 retvalue = class->atomName;
811 SetLastError( ERROR_INVALID_INDEX );
814 release_class_ptr( class );
819 /***********************************************************************
820 * GetClassLongW (USER32.@)
822 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
824 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
829 /***********************************************************************
830 * GetClassLongA (USER32.@)
832 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
834 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
838 /***********************************************************************
839 * SetClassWord (USER32.@)
841 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
846 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
848 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
850 SERVER_START_REQ( set_class_info )
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 ))
859 void *ptr = (char *)(class + 1) + offset;
860 memcpy( &retval, ptr, sizeof(retval) );
861 memcpy( ptr, &newval, sizeof(newval) );
865 release_class_ptr( class );
870 /***********************************************************************
873 * Implementation of SetClassLong(Ptr)A/W
875 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
876 UINT size, BOOL unicode )
879 ULONG_PTR retval = 0;
881 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
885 if (set_server_info( hwnd, offset, newval, size ))
887 void *ptr = (char *)(class + 1) + offset;
888 if ( size == sizeof(LONG) )
891 LONG newlong = newval;
892 memcpy( &retdword, ptr, sizeof(DWORD) );
893 memcpy( ptr, &newlong, sizeof(LONG) );
898 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
899 memcpy( ptr, &newval, sizeof(LONG_PTR) );
907 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
909 CLASS_SetMenuNameA( class, (LPCSTR)newval );
910 retval = 0; /* Old value is now meaningless anyway */
913 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
914 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
915 unicode ? (WNDPROC)newval : NULL );
917 case GCLP_HBRBACKGROUND:
918 retval = (ULONG_PTR)class->hbrBackground;
919 class->hbrBackground = (HBRUSH)newval;
922 retval = (ULONG_PTR)class->hCursor;
923 class->hCursor = (HCURSOR)newval;
926 retval = (ULONG_PTR)class->hIcon;
927 class->hIcon = (HICON)newval;
930 retval = (ULONG_PTR)class->hIconSm;
931 class->hIconSm = (HICON)newval;
934 if (!set_server_info( hwnd, offset, newval, size )) break;
935 retval = class->style;
936 class->style = newval;
939 if (!set_server_info( hwnd, offset, newval, size )) break;
940 retval = class->cbWndExtra;
941 class->cbWndExtra = newval;
944 if (!set_server_info( hwnd, offset, newval, size )) break;
945 retval = (ULONG_PTR)class->hInstance;
946 class->hInstance = (HINSTANCE)newval;
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) );
954 case GCL_CBCLSEXTRA: /* cannot change this one */
955 SetLastError( ERROR_INVALID_PARAMETER );
958 SetLastError( ERROR_INVALID_INDEX );
961 release_class_ptr( class );
966 /***********************************************************************
967 * SetClassLongW (USER32.@)
969 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
971 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE );
975 /***********************************************************************
976 * SetClassLongA (USER32.@)
978 DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
980 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
984 /***********************************************************************
985 * GetClassNameA (USER32.@)
987 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
989 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
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) );
1000 /***********************************************************************
1001 * GetClassNameW (USER32.@)
1003 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1008 TRACE("%p %p %d\n", hwnd, buffer, count);
1010 if (count <= 0) return 0;
1012 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
1014 if (class == CLASS_OTHER_PROCESS)
1016 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
1018 ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 );
1021 ret = min(count - 1, ret);
1022 memcpy(buffer, tmpbuf, ret * sizeof(WCHAR));
1028 lstrcpynW( buffer, class->name, count );
1029 release_class_ptr( class );
1030 ret = strlenW( buffer );
1036 /***********************************************************************
1037 * RealGetWindowClassA (USER32.@)
1039 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
1041 return GetClassNameA( hwnd, buffer, count );
1045 /***********************************************************************
1046 * RealGetWindowClassW (USER32.@)
1048 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
1050 return GetClassNameW( hwnd, buffer, count );
1054 /***********************************************************************
1055 * GetClassInfoA (USER32.@)
1057 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1060 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
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;
1079 /***********************************************************************
1080 * GetClassInfoW (USER32.@)
1082 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1085 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
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;
1104 /***********************************************************************
1105 * GetClassInfoExA (USER32.@)
1107 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1112 TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc);
1114 if (!hInstance) hInstance = user32_module;
1116 if (!IS_INTRESOURCE(name))
1118 WCHAR nameW[MAX_ATOM_LEN + 1];
1119 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) ))
1121 classPtr = CLASS_FindClass( nameW, hInstance );
1123 else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance );
1127 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
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 );
1144 /* We must return the atom of the class here instead of just TRUE. */
1149 /***********************************************************************
1150 * GetClassInfoExW (USER32.@)
1152 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1157 TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc);
1159 if (!hInstance) hInstance = user32_module;
1161 if (!(classPtr = CLASS_FindClass( name, hInstance )))
1163 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
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 );
1180 /* We must return the atom of the class here instead of just TRUE. */
1185 #if 0 /* toolhelp is in kernel, so this cannot work */
1187 /***********************************************************************
1188 * ClassFirst (TOOLHELP.69)
1190 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1192 TRACE("%p\n",pClassEntry);
1193 pClassEntry->wNext = 1;
1194 return ClassNext16( pClassEntry );
1198 /***********************************************************************
1199 * ClassNext (TOOLHELP.70)
1201 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1204 CLASS *class = firstClass;
1206 TRACE("%p\n",pClassEntry);
1208 if (!pClassEntry->wNext) return FALSE;
1209 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1212 pClassEntry->wNext = 0;
1215 pClassEntry->hInst = class->hInstance;
1216 pClassEntry->wNext++;
1217 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1218 sizeof(pClassEntry->szClassName) );
1223 /* 64bit versions */
1225 #ifdef GetClassLongPtrA
1226 #undef GetClassLongPtrA
1229 #ifdef GetClassLongPtrW
1230 #undef GetClassLongPtrW
1233 #ifdef SetClassLongPtrA
1234 #undef SetClassLongPtrA
1237 #ifdef SetClassLongPtrW
1238 #undef SetClassLongPtrW
1241 /***********************************************************************
1242 * GetClassLongPtrA (USER32.@)
1244 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1246 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1249 /***********************************************************************
1250 * GetClassLongPtrW (USER32.@)
1252 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1254 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1257 /***********************************************************************
1258 * SetClassLongPtrW (USER32.@)
1260 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1262 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1265 /***********************************************************************
1266 * SetClassLongPtrA (USER32.@)
1268 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1270 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );