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 HINSTANCE hInstance; /* Module that created the task */
56 HICON hIcon; /* Default icon */
57 HICON hIconSm; /* Default small icon */
58 HCURSOR hCursor; /* Default cursor */
59 HBRUSH hbrBackground; /* Default background */
60 ATOM atomName; /* Name of the class */
61 WCHAR name[MAX_ATOM_LEN + 1];
64 static struct list class_list = LIST_INIT( class_list );
66 #define CLASS_OTHER_PROCESS ((CLASS *)1)
68 /***********************************************************************
71 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
73 WND *ptr = WIN_GetPtr( hwnd );
77 if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class;
78 if (!write_access) return CLASS_OTHER_PROCESS;
80 /* modifying classes in other processes is not allowed */
81 if (ptr == WND_DESKTOP || IsWindow( hwnd ))
83 SetLastError( ERROR_ACCESS_DENIED );
87 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
92 /***********************************************************************
95 static inline void release_class_ptr( CLASS *ptr )
101 /***********************************************************************
104 ATOM get_int_atom_value( LPCWSTR name )
108 if (IS_INTRESOURCE(name)) return LOWORD(name);
109 if (*name++ != '#') return 0;
112 if (*name < '0' || *name > '9') return 0;
113 ret = ret * 10 + *name++ - '0';
114 if (ret > 0xffff) return 0;
120 /***********************************************************************
123 * Set class info with the wine server.
125 static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size )
129 SERVER_START_REQ( set_class_info )
132 req->extra_offset = -1;
136 req->flags = SET_CLASS_ATOM;
139 req->flags = SET_CLASS_STYLE;
143 req->flags = SET_CLASS_WINEXTRA;
144 req->win_extra = newval;
147 req->flags = SET_CLASS_INSTANCE;
148 req->instance = (void *)newval;
151 assert( offset >= 0 );
152 req->flags = SET_CLASS_EXTRA;
153 req->extra_offset = offset;
154 req->extra_size = size;
155 if ( size == sizeof(LONG) )
157 LONG newlong = newval;
158 memcpy( &req->extra_value, &newlong, sizeof(LONG) );
161 memcpy( &req->extra_value, &newval, sizeof(LONG_PTR) );
164 ret = !wine_server_call_err( req );
171 /***********************************************************************
174 * Get the menu name as a ASCII string.
176 static inline LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
178 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
179 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
183 /***********************************************************************
186 * Get the menu name as a Unicode string.
188 static inline LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
190 return classPtr->menuName;
194 /***********************************************************************
197 * Set the menu name in a class structure by copying the string.
199 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
201 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
204 DWORD lenA = strlen(name) + 1;
205 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
206 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
207 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
208 memcpy( classPtr->menuName + lenW, name, lenA );
210 else classPtr->menuName = (LPWSTR)name;
214 /***********************************************************************
217 * Set the menu name in a class structure by copying the string.
219 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
221 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
224 DWORD lenW = strlenW(name) + 1;
225 DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
226 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
227 memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
228 WideCharToMultiByte( CP_ACP, 0, name, lenW,
229 (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
231 else classPtr->menuName = (LPWSTR)name;
235 /***********************************************************************
238 * Free a class structure.
240 static void CLASS_FreeClass( CLASS *classPtr )
242 TRACE("%p\n", classPtr);
246 list_remove( &classPtr->entry );
247 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
248 DeleteObject( classPtr->hbrBackground );
249 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
250 HeapFree( GetProcessHeap(), 0, classPtr );
255 /***********************************************************************
256 * CLASS_FreeModuleClasses
258 void CLASS_FreeModuleClasses( HMODULE16 hModule )
260 struct list *ptr, *next;
262 TRACE("0x%08x\n", hModule);
265 for (ptr = list_head( &class_list ); ptr; ptr = next)
267 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
268 next = list_next( &class_list, ptr );
269 if (class->hInstance == HINSTANCE_32(hModule))
273 SERVER_START_REQ( destroy_class )
275 req->atom = class->atomName;
276 req->instance = class->hInstance;
277 ret = !wine_server_call_err( req );
280 if (ret) CLASS_FreeClass( class );
287 /***********************************************************************
290 * Return a pointer to the class.
291 * hinstance has been normalized by the caller.
293 static CLASS *CLASS_FindClass( LPCWSTR name, HINSTANCE hinstance )
296 ATOM atom = get_int_atom_value( name );
300 LIST_FOR_EACH( ptr, &class_list )
302 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
305 if (class->atomName != atom) continue;
309 if (!name || strcmpiW( class->name, name )) continue;
311 if (!hinstance || !class->local || class->hInstance == hinstance)
313 TRACE("%s %p -> %p\n", debugstr_w(name), hinstance, class);
318 TRACE("%s %p -> not found\n", debugstr_w(name), hinstance);
323 /***********************************************************************
324 * CLASS_RegisterClass
326 * The real RegisterClass() functionality.
328 static CLASS *CLASS_RegisterClass( LPCWSTR name, HINSTANCE hInstance, BOOL local,
329 DWORD style, INT classExtra, INT winExtra )
334 TRACE("name=%s hinst=%p style=0x%x clExtr=0x%x winExtr=0x%x\n",
335 debugstr_w(name), hInstance, style, classExtra, winExtra );
337 /* Fix the extra bytes value */
339 if (classExtra < 0 || winExtra < 0)
341 SetLastError( ERROR_INVALID_PARAMETER );
344 if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
345 WARN("Class extra bytes %d is > 40\n", classExtra);
346 if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
347 WARN("Win extra bytes %d is > 40\n", winExtra );
349 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
350 if (!classPtr) return NULL;
352 classPtr->atomName = get_int_atom_value( name );
353 if (!classPtr->atomName && name) strcpyW( classPtr->name, name );
354 else GlobalGetAtomNameW( classPtr->atomName, classPtr->name, sizeof(classPtr->name)/sizeof(WCHAR) );
356 SERVER_START_REQ( create_class )
360 req->instance = hInstance;
361 req->extra = classExtra;
362 req->win_extra = winExtra;
363 req->client_ptr = classPtr;
364 req->atom = classPtr->atomName;
365 if (!req->atom && name) wine_server_add_data( req, name, strlenW(name) * sizeof(WCHAR) );
366 ret = !wine_server_call_err( req );
367 classPtr->atomName = reply->atom;
372 HeapFree( GetProcessHeap(), 0, classPtr );
376 classPtr->style = style;
377 classPtr->local = local;
378 classPtr->cbWndExtra = winExtra;
379 classPtr->cbClsExtra = classExtra;
380 classPtr->hInstance = hInstance;
382 /* Other non-null values must be set by caller */
385 if (local) list_add_head( &class_list, &classPtr->entry );
386 else list_add_tail( &class_list, &classPtr->entry );
391 /***********************************************************************
394 * Register a builtin control class.
395 * This allows having both ASCII and Unicode winprocs for the same class.
397 static WNDPROC register_builtin( const struct builtin_class_descr *descr )
401 if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE,
402 descr->style, 0, descr->extra ))) return 0;
404 classPtr->hCursor = LoadCursorA( 0, (LPSTR)descr->cursor );
405 classPtr->hbrBackground = descr->brush;
406 classPtr->winproc = WINPROC_AllocProc( descr->procA, descr->procW );
407 release_class_ptr( classPtr );
408 return classPtr->winproc;
412 /***********************************************************************
413 * CLASS_RegisterBuiltinClasses
415 void CLASS_RegisterBuiltinClasses(void)
417 register_builtin( &DESKTOP_builtin_class );
418 register_builtin( &BUTTON_builtin_class );
419 register_builtin( &COMBO_builtin_class );
420 register_builtin( &COMBOLBOX_builtin_class );
421 register_builtin( &DIALOG_builtin_class );
422 EDIT_winproc_handle = register_builtin( &EDIT_builtin_class );
423 register_builtin( &ICONTITLE_builtin_class );
424 register_builtin( &LISTBOX_builtin_class );
425 register_builtin( &MDICLIENT_builtin_class );
426 register_builtin( &MENU_builtin_class );
427 register_builtin( &SCROLL_builtin_class );
428 register_builtin( &STATIC_builtin_class );
430 /* the DefWindowProc winprocs are magic too */
431 WINPROC_AllocProc( DefWindowProcA, DefWindowProcW );
435 /***********************************************************************
438 * Add a new window using this class, and set the necessary
439 * information inside the window structure.
441 void CLASS_AddWindow( CLASS *class, WND *win, BOOL unicode )
444 win->clsStyle = class->style;
445 win->winproc = class->winproc;
446 if (WINPROC_IsUnicode( win->winproc, unicode )) win->flags |= WIN_ISUNICODE;
450 /***********************************************************************
451 * RegisterClassA (USER32.@)
453 * Register a window class.
456 * >0: Unique identifier
459 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
463 wcex.cbSize = sizeof(wcex);
464 wcex.style = wc->style;
465 wcex.lpfnWndProc = wc->lpfnWndProc;
466 wcex.cbClsExtra = wc->cbClsExtra;
467 wcex.cbWndExtra = wc->cbWndExtra;
468 wcex.hInstance = wc->hInstance;
469 wcex.hIcon = wc->hIcon;
470 wcex.hCursor = wc->hCursor;
471 wcex.hbrBackground = wc->hbrBackground;
472 wcex.lpszMenuName = wc->lpszMenuName;
473 wcex.lpszClassName = wc->lpszClassName;
475 return RegisterClassExA( &wcex );
479 /***********************************************************************
480 * RegisterClassW (USER32.@)
482 * See RegisterClassA.
484 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
488 wcex.cbSize = sizeof(wcex);
489 wcex.style = wc->style;
490 wcex.lpfnWndProc = wc->lpfnWndProc;
491 wcex.cbClsExtra = wc->cbClsExtra;
492 wcex.cbWndExtra = wc->cbWndExtra;
493 wcex.hInstance = wc->hInstance;
494 wcex.hIcon = wc->hIcon;
495 wcex.hCursor = wc->hCursor;
496 wcex.hbrBackground = wc->hbrBackground;
497 wcex.lpszMenuName = wc->lpszMenuName;
498 wcex.lpszClassName = wc->lpszClassName;
500 return RegisterClassExW( &wcex );
504 /***********************************************************************
505 * RegisterClassExA (USER32.@)
507 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
513 if (wc->hInstance == user32_module)
515 /* we can't register a class for user32 */
516 SetLastError( ERROR_INVALID_PARAMETER );
519 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
521 if (!IS_INTRESOURCE(wc->lpszClassName))
523 WCHAR name[MAX_ATOM_LEN + 1];
525 if (!MultiByteToWideChar( CP_ACP, 0, wc->lpszClassName, -1, name, MAX_ATOM_LEN + 1 )) return 0;
526 classPtr = CLASS_RegisterClass( name, instance, !(wc->style & CS_GLOBALCLASS),
527 wc->style, wc->cbClsExtra, wc->cbWndExtra );
531 classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance,
532 !(wc->style & CS_GLOBALCLASS), wc->style,
533 wc->cbClsExtra, wc->cbWndExtra );
535 if (!classPtr) return 0;
536 atom = classPtr->atomName;
538 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
539 debugstr_a(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
540 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
542 classPtr->hIcon = wc->hIcon;
543 classPtr->hIconSm = wc->hIconSm;
544 classPtr->hCursor = wc->hCursor;
545 classPtr->hbrBackground = wc->hbrBackground;
546 classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, NULL );
547 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
548 release_class_ptr( classPtr );
553 /***********************************************************************
554 * RegisterClassExW (USER32.@)
556 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
562 if (wc->hInstance == user32_module)
564 /* we can't register a class for user32 */
565 SetLastError( ERROR_INVALID_PARAMETER );
568 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
570 if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS),
571 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
574 atom = classPtr->atomName;
576 TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
577 debugstr_w(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground,
578 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
580 classPtr->hIcon = wc->hIcon;
581 classPtr->hIconSm = wc->hIconSm;
582 classPtr->hCursor = wc->hCursor;
583 classPtr->hbrBackground = wc->hbrBackground;
584 classPtr->winproc = WINPROC_AllocProc( NULL, wc->lpfnWndProc );
585 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
586 release_class_ptr( classPtr );
591 /***********************************************************************
592 * UnregisterClassA (USER32.@)
594 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
596 if (!IS_INTRESOURCE(className))
598 WCHAR name[MAX_ATOM_LEN + 1];
600 if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 ))
602 return UnregisterClassW( name, hInstance );
604 return UnregisterClassW( (LPCWSTR)className, hInstance );
607 /***********************************************************************
608 * UnregisterClassW (USER32.@)
610 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
612 CLASS *classPtr = NULL;
614 TRACE("%s %p\n",debugstr_w(className), hInstance);
616 SERVER_START_REQ( destroy_class )
618 req->instance = hInstance;
619 if (!(req->atom = get_int_atom_value(className)) && className)
620 wine_server_add_data( req, className, strlenW(className) * sizeof(WCHAR) );
621 if (!wine_server_call_err( req )) classPtr = reply->client_ptr;
625 if (classPtr) CLASS_FreeClass( classPtr );
626 return (classPtr != NULL);
630 /***********************************************************************
631 * GetClassWord (USER32.@)
633 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
638 if (offset < 0) return GetClassLongA( hwnd, offset );
640 TRACE("%p %x\n",hwnd, offset);
642 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
644 if (class == CLASS_OTHER_PROCESS)
646 SERVER_START_REQ( set_class_info )
650 req->extra_offset = offset;
651 req->extra_size = sizeof(retvalue);
652 if (!wine_server_call_err( req ))
653 memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) );
659 if (offset <= class->cbClsExtra - sizeof(WORD))
660 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
662 SetLastError( ERROR_INVALID_INDEX );
663 release_class_ptr( class );
668 /***********************************************************************
671 * Implementation of GetClassLong(Ptr)A/W
673 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
677 ULONG_PTR retvalue = 0;
679 TRACE("%p %d\n", hwnd, offset);
681 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
683 if (class == CLASS_OTHER_PROCESS)
685 SERVER_START_REQ( set_class_info )
689 req->extra_offset = (offset >= 0) ? offset : -1;
690 req->extra_size = (offset >= 0) ? size : 0;
691 if (!wine_server_call_err( req ))
695 case GCLP_HBRBACKGROUND:
701 FIXME( "offset %d (%s) not supported on other process window %p\n",
702 offset, SPY_GetClassLongOffsetName(offset), hwnd );
703 SetLastError( ERROR_INVALID_HANDLE );
706 retvalue = reply->old_style;
709 retvalue = reply->old_win_extra;
712 retvalue = reply->old_extra;
715 retvalue = (ULONG_PTR)reply->old_instance;
718 retvalue = reply->old_atom;
723 if (size == sizeof(DWORD))
726 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
730 memcpy( &retvalue, &reply->old_extra_value,
733 else SetLastError( ERROR_INVALID_INDEX );
744 if (offset <= class->cbClsExtra - size)
746 if (size == sizeof(DWORD))
749 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
753 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
756 SetLastError( ERROR_INVALID_INDEX );
757 release_class_ptr( class );
763 case GCLP_HBRBACKGROUND:
764 retvalue = (ULONG_PTR)class->hbrBackground;
767 retvalue = (ULONG_PTR)class->hCursor;
770 retvalue = (ULONG_PTR)class->hIcon;
773 retvalue = (ULONG_PTR)class->hIconSm;
776 retvalue = class->style;
779 retvalue = class->cbWndExtra;
782 retvalue = class->cbClsExtra;
785 retvalue = (ULONG_PTR)class->hInstance;
788 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
791 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
793 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
795 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
798 retvalue = class->atomName;
801 SetLastError( ERROR_INVALID_INDEX );
804 release_class_ptr( class );
809 /***********************************************************************
810 * GetClassLongW (USER32.@)
812 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
814 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
819 /***********************************************************************
820 * GetClassLongA (USER32.@)
822 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
824 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
828 /***********************************************************************
829 * SetClassWord (USER32.@)
831 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
836 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
838 TRACE("%p %d %x\n", hwnd, offset, newval);
840 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
842 SERVER_START_REQ( set_class_info )
845 req->flags = SET_CLASS_EXTRA;
846 req->extra_offset = offset;
847 req->extra_size = sizeof(newval);
848 memcpy( &req->extra_value, &newval, sizeof(newval) );
849 if (!wine_server_call_err( req ))
851 void *ptr = (char *)(class + 1) + offset;
852 memcpy( &retval, ptr, sizeof(retval) );
853 memcpy( ptr, &newval, sizeof(newval) );
857 release_class_ptr( class );
862 /***********************************************************************
865 * Implementation of SetClassLong(Ptr)A/W
867 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
868 UINT size, BOOL unicode )
871 ULONG_PTR retval = 0;
873 TRACE("%p %d %lx\n", hwnd, offset, newval);
875 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
879 if (set_server_info( hwnd, offset, newval, size ))
881 void *ptr = (char *)(class + 1) + offset;
882 if ( size == sizeof(LONG) )
885 LONG newlong = newval;
886 memcpy( &retdword, ptr, sizeof(DWORD) );
887 memcpy( ptr, &newlong, sizeof(LONG) );
892 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
893 memcpy( ptr, &newval, sizeof(LONG_PTR) );
901 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
903 CLASS_SetMenuNameA( class, (LPCSTR)newval );
904 retval = 0; /* Old value is now meaningless anyway */
907 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
908 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
909 unicode ? (WNDPROC)newval : NULL );
911 case GCLP_HBRBACKGROUND:
912 retval = (ULONG_PTR)class->hbrBackground;
913 class->hbrBackground = (HBRUSH)newval;
916 retval = (ULONG_PTR)class->hCursor;
917 class->hCursor = (HCURSOR)newval;
920 retval = (ULONG_PTR)class->hIcon;
921 class->hIcon = (HICON)newval;
924 retval = (ULONG_PTR)class->hIconSm;
925 class->hIconSm = (HICON)newval;
928 if (!set_server_info( hwnd, offset, newval, size )) break;
929 retval = class->style;
930 class->style = newval;
933 if (!set_server_info( hwnd, offset, newval, size )) break;
934 retval = class->cbWndExtra;
935 class->cbWndExtra = newval;
938 if (!set_server_info( hwnd, offset, newval, size )) break;
939 retval = (ULONG_PTR)class->hInstance;
940 class->hInstance = (HINSTANCE)newval;
943 if (!set_server_info( hwnd, offset, newval, size )) break;
944 retval = class->atomName;
945 class->atomName = newval;
946 GlobalGetAtomNameW( newval, class->name, sizeof(class->name)/sizeof(WCHAR) );
948 case GCL_CBCLSEXTRA: /* cannot change this one */
949 SetLastError( ERROR_INVALID_PARAMETER );
952 SetLastError( ERROR_INVALID_INDEX );
955 release_class_ptr( class );
960 /***********************************************************************
961 * SetClassLongW (USER32.@)
963 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
965 TRACE("%p %d %x\n", hwnd, offset, 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 TRACE("%p %d %x\n", hwnd, offset, newval);
978 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
982 /***********************************************************************
983 * GetClassNameA (USER32.@)
985 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
987 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
990 if (count <= 0) return 0;
991 if (!GetClassNameW( hwnd, tmpbuf, sizeof(tmpbuf)/sizeof(WCHAR) )) return 0;
992 RtlUnicodeToMultiByteN( buffer, count - 1, &len, tmpbuf, strlenW(tmpbuf) * sizeof(WCHAR) );
998 /***********************************************************************
999 * GetClassNameW (USER32.@)
1001 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1006 TRACE("%p %p %d\n", hwnd, buffer, count);
1008 if (count <= 0) return 0;
1010 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
1012 if (class == CLASS_OTHER_PROCESS)
1014 WCHAR tmpbuf[MAX_ATOM_LEN + 1];
1016 ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 );
1019 ret = min(count - 1, ret);
1020 memcpy(buffer, tmpbuf, ret * sizeof(WCHAR));
1026 lstrcpynW( buffer, class->name, count );
1027 release_class_ptr( class );
1028 ret = strlenW( buffer );
1034 /***********************************************************************
1035 * RealGetWindowClassA (USER32.@)
1037 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
1039 return GetClassNameA( hwnd, buffer, count );
1043 /***********************************************************************
1044 * RealGetWindowClassW (USER32.@)
1046 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
1048 return GetClassNameW( hwnd, buffer, count );
1052 /***********************************************************************
1053 * GetClassInfoA (USER32.@)
1055 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1058 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
1062 wc->style = wcex.style;
1063 wc->lpfnWndProc = wcex.lpfnWndProc;
1064 wc->cbClsExtra = wcex.cbClsExtra;
1065 wc->cbWndExtra = wcex.cbWndExtra;
1066 wc->hInstance = wcex.hInstance;
1067 wc->hIcon = wcex.hIcon;
1068 wc->hCursor = wcex.hCursor;
1069 wc->hbrBackground = wcex.hbrBackground;
1070 wc->lpszMenuName = wcex.lpszMenuName;
1071 wc->lpszClassName = wcex.lpszClassName;
1077 /***********************************************************************
1078 * GetClassInfoW (USER32.@)
1080 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1083 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
1087 wc->style = wcex.style;
1088 wc->lpfnWndProc = wcex.lpfnWndProc;
1089 wc->cbClsExtra = wcex.cbClsExtra;
1090 wc->cbWndExtra = wcex.cbWndExtra;
1091 wc->hInstance = wcex.hInstance;
1092 wc->hIcon = wcex.hIcon;
1093 wc->hCursor = wcex.hCursor;
1094 wc->hbrBackground = wcex.hbrBackground;
1095 wc->lpszMenuName = wcex.lpszMenuName;
1096 wc->lpszClassName = wcex.lpszClassName;
1102 /***********************************************************************
1103 * GetClassInfoExA (USER32.@)
1105 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1110 TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc);
1112 if (!hInstance) hInstance = user32_module;
1114 if (!IS_INTRESOURCE(name))
1116 WCHAR nameW[MAX_ATOM_LEN + 1];
1117 if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) ))
1119 classPtr = CLASS_FindClass( nameW, hInstance );
1121 else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance );
1125 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1128 wc->style = classPtr->style;
1129 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE );
1130 wc->cbClsExtra = classPtr->cbClsExtra;
1131 wc->cbWndExtra = classPtr->cbWndExtra;
1132 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1133 wc->hIcon = (HICON)classPtr->hIcon;
1134 wc->hIconSm = (HICON)classPtr->hIconSm;
1135 wc->hCursor = (HCURSOR)classPtr->hCursor;
1136 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1137 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1138 wc->lpszClassName = name;
1139 atom = classPtr->atomName;
1140 release_class_ptr( classPtr );
1142 /* We must return the atom of the class here instead of just TRUE. */
1147 /***********************************************************************
1148 * GetClassInfoExW (USER32.@)
1150 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1155 TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc);
1157 if (!hInstance) hInstance = user32_module;
1159 if (!(classPtr = CLASS_FindClass( name, hInstance )))
1161 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1164 wc->style = classPtr->style;
1165 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE );
1166 wc->cbClsExtra = classPtr->cbClsExtra;
1167 wc->cbWndExtra = classPtr->cbWndExtra;
1168 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1169 wc->hIcon = (HICON)classPtr->hIcon;
1170 wc->hIconSm = (HICON)classPtr->hIconSm;
1171 wc->hCursor = (HCURSOR)classPtr->hCursor;
1172 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1173 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1174 wc->lpszClassName = name;
1175 atom = classPtr->atomName;
1176 release_class_ptr( classPtr );
1178 /* We must return the atom of the class here instead of just TRUE. */
1183 #if 0 /* toolhelp is in kernel, so this cannot work */
1185 /***********************************************************************
1186 * ClassFirst (TOOLHELP.69)
1188 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1190 TRACE("%p\n",pClassEntry);
1191 pClassEntry->wNext = 1;
1192 return ClassNext16( pClassEntry );
1196 /***********************************************************************
1197 * ClassNext (TOOLHELP.70)
1199 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1202 CLASS *class = firstClass;
1204 TRACE("%p\n",pClassEntry);
1206 if (!pClassEntry->wNext) return FALSE;
1207 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1210 pClassEntry->wNext = 0;
1213 pClassEntry->hInst = class->hInstance;
1214 pClassEntry->wNext++;
1215 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1216 sizeof(pClassEntry->szClassName) );
1221 /* 64bit versions */
1223 #ifdef GetClassLongPtrA
1224 #undef GetClassLongPtrA
1227 #ifdef GetClassLongPtrW
1228 #undef GetClassLongPtrW
1231 #ifdef SetClassLongPtrA
1232 #undef SetClassLongPtrA
1235 #ifdef SetClassLongPtrW
1236 #undef SetClassLongPtrW
1239 /***********************************************************************
1240 * GetClassLongPtrA (USER32.@)
1242 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1244 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1247 /***********************************************************************
1248 * GetClassLongPtrW (USER32.@)
1250 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1252 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1255 /***********************************************************************
1256 * SetClassLongPtrW (USER32.@)
1258 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1260 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1263 /***********************************************************************
1264 * SetClassLongPtrA (USER32.@)
1266 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1268 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );