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/winuser16.h"
35 #include "wine/unicode.h"
37 #include "user_private.h"
40 #include "wine/server.h"
41 #include "wine/list.h"
42 #include "wine/debug.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(class);
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 */
63 static struct list class_list = LIST_INIT( class_list );
65 #define CLASS_OTHER_PROCESS ((CLASS *)1)
67 /***********************************************************************
70 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
72 WND *ptr = WIN_GetPtr( hwnd );
76 if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class;
77 if (!write_access) return CLASS_OTHER_PROCESS;
79 /* modifying classes in other processes is not allowed */
80 if (ptr == WND_DESKTOP || IsWindow( hwnd ))
82 SetLastError( ERROR_ACCESS_DENIED );
86 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
91 /***********************************************************************
94 inline static void release_class_ptr( CLASS *ptr )
100 /***********************************************************************
103 * Set class info with the wine server.
105 static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size )
109 SERVER_START_REQ( set_class_info )
112 req->extra_offset = -1;
116 req->flags = SET_CLASS_ATOM;
119 req->flags = SET_CLASS_STYLE;
123 req->flags = SET_CLASS_WINEXTRA;
124 req->win_extra = newval;
127 req->flags = SET_CLASS_INSTANCE;
128 req->instance = (void *)newval;
131 assert( offset >= 0 );
132 req->flags = SET_CLASS_EXTRA;
133 req->extra_offset = offset;
134 req->extra_size = size;
135 if ( size == sizeof(LONG) )
137 LONG newlong = newval;
138 memcpy( &req->extra_value, &newlong, sizeof(LONG) );
141 memcpy( &req->extra_value, &newval, sizeof(LONG_PTR) );
144 ret = !wine_server_call_err( req );
151 /***********************************************************************
154 * Get the menu name as a ASCII string.
156 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
158 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
159 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
163 /***********************************************************************
166 * Get the menu name as a Unicode string.
168 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
170 return classPtr->menuName;
174 /***********************************************************************
177 * Set the menu name in a class structure by copying the string.
179 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
181 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
184 DWORD lenA = strlen(name) + 1;
185 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
186 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
187 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
188 memcpy( classPtr->menuName + lenW, name, lenA );
190 else classPtr->menuName = (LPWSTR)name;
194 /***********************************************************************
197 * Set the menu name in a class structure by copying the string.
199 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
201 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
204 DWORD lenW = strlenW(name) + 1;
205 DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
206 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
207 memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
208 WideCharToMultiByte( CP_ACP, 0, name, lenW,
209 (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
211 else classPtr->menuName = (LPWSTR)name;
215 /***********************************************************************
218 * Free a class structure.
220 static void CLASS_FreeClass( CLASS *classPtr )
222 TRACE("%p\n", classPtr);
226 list_remove( &classPtr->entry );
227 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
228 DeleteObject( classPtr->hbrBackground );
229 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
230 HeapFree( GetProcessHeap(), 0, classPtr );
235 /***********************************************************************
236 * CLASS_FreeModuleClasses
238 void CLASS_FreeModuleClasses( HMODULE16 hModule )
240 struct list *ptr, *next;
242 TRACE("0x%08x\n", hModule);
245 for (ptr = list_head( &class_list ); ptr; ptr = next)
247 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
248 next = list_next( &class_list, ptr );
249 if (class->hInstance == HINSTANCE_32(hModule))
253 SERVER_START_REQ( destroy_class )
255 req->atom = class->atomName;
256 req->instance = class->hInstance;
257 ret = !wine_server_call_err( req );
260 if (ret) CLASS_FreeClass( class );
267 /***********************************************************************
268 * CLASS_FindClassByAtom
270 * Return a pointer to the class.
271 * hinstance has been normalized by the caller.
273 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
279 LIST_FOR_EACH( ptr, &class_list )
281 CLASS *class = LIST_ENTRY( ptr, CLASS, entry );
282 if (class->atomName != atom) continue;
283 if (!hinstance || !class->local || class->hInstance == hinstance)
285 TRACE("0x%04x %p -> %p\n", atom, hinstance, class);
290 TRACE("0x%04x %p -> not found\n", atom, hinstance);
295 /***********************************************************************
296 * CLASS_RegisterClass
298 * The real RegisterClass() functionality.
299 * The atom is deleted no matter what.
301 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance, BOOL local,
302 DWORD style, INT classExtra, INT winExtra )
307 TRACE("atom=0x%x hinst=%p style=0x%lx clExtr=0x%x winExtr=0x%x\n",
308 atom, hInstance, style, classExtra, winExtra );
310 /* Fix the extra bytes value */
312 if (classExtra < 0 || winExtra < 0)
314 SetLastError( ERROR_INVALID_PARAMETER );
317 if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
318 WARN("Class extra bytes %d is > 40\n", classExtra);
319 if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
320 WARN("Win extra bytes %d is > 40\n", winExtra );
322 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
325 GlobalDeleteAtom( atom );
329 SERVER_START_REQ( create_class )
334 req->instance = hInstance;
335 req->extra = classExtra;
336 req->win_extra = winExtra;
337 req->client_ptr = classPtr;
338 ret = !wine_server_call_err( req );
341 GlobalDeleteAtom( atom ); /* the server increased the atom ref count */
344 HeapFree( GetProcessHeap(), 0, classPtr );
348 classPtr->style = style;
349 classPtr->local = local;
350 classPtr->cbWndExtra = winExtra;
351 classPtr->cbClsExtra = classExtra;
352 classPtr->hInstance = hInstance;
353 classPtr->atomName = atom;
355 /* Other non-null values must be set by caller */
358 if (local) list_add_head( &class_list, &classPtr->entry );
359 else list_add_tail( &class_list, &classPtr->entry );
364 /***********************************************************************
367 * Register a builtin control class.
368 * This allows having both ASCII and Unicode winprocs for the same class.
370 static CLASS *register_builtin( const struct builtin_class_descr *descr )
375 if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
377 if (!(classPtr = CLASS_RegisterClass( atom, user32_module, FALSE,
378 descr->style, 0, descr->extra ))) return 0;
380 classPtr->hCursor = LoadCursorA( 0, (LPSTR)descr->cursor );
381 classPtr->hbrBackground = descr->brush;
382 classPtr->winproc = WINPROC_AllocProc( descr->procA, descr->procW );
383 release_class_ptr( classPtr );
388 /***********************************************************************
389 * CLASS_RegisterBuiltinClasses
391 void CLASS_RegisterBuiltinClasses(void)
393 extern const struct builtin_class_descr BUTTON_builtin_class;
394 extern const struct builtin_class_descr COMBO_builtin_class;
395 extern const struct builtin_class_descr COMBOLBOX_builtin_class;
396 extern const struct builtin_class_descr DIALOG_builtin_class;
397 extern const struct builtin_class_descr DESKTOP_builtin_class;
398 extern const struct builtin_class_descr EDIT_builtin_class;
399 extern const struct builtin_class_descr ICONTITLE_builtin_class;
400 extern const struct builtin_class_descr LISTBOX_builtin_class;
401 extern const struct builtin_class_descr MDICLIENT_builtin_class;
402 extern const struct builtin_class_descr MENU_builtin_class;
403 extern const struct builtin_class_descr SCROLL_builtin_class;
404 extern const struct builtin_class_descr STATIC_builtin_class;
406 register_builtin( &DESKTOP_builtin_class );
407 register_builtin( &BUTTON_builtin_class );
408 register_builtin( &COMBO_builtin_class );
409 register_builtin( &COMBOLBOX_builtin_class );
410 register_builtin( &DIALOG_builtin_class );
411 register_builtin( &EDIT_builtin_class );
412 register_builtin( &ICONTITLE_builtin_class );
413 register_builtin( &LISTBOX_builtin_class );
414 register_builtin( &MDICLIENT_builtin_class );
415 register_builtin( &MENU_builtin_class );
416 register_builtin( &SCROLL_builtin_class );
417 register_builtin( &STATIC_builtin_class );
421 /***********************************************************************
424 * Add a new window using this class, and set the necessary
425 * information inside the window structure.
427 void CLASS_AddWindow( CLASS *class, WND *win, BOOL unicode )
430 win->clsStyle = class->style;
431 win->winproc = class->winproc;
432 if (WINPROC_IsUnicode( win->winproc, unicode )) win->flags |= WIN_ISUNICODE;
436 /***********************************************************************
437 * RegisterClassA (USER32.@)
439 * Register a window class.
442 * >0: Unique identifier
445 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
449 wcex.cbSize = sizeof(wcex);
450 wcex.style = wc->style;
451 wcex.lpfnWndProc = wc->lpfnWndProc;
452 wcex.cbClsExtra = wc->cbClsExtra;
453 wcex.cbWndExtra = wc->cbWndExtra;
454 wcex.hInstance = wc->hInstance;
455 wcex.hIcon = wc->hIcon;
456 wcex.hCursor = wc->hCursor;
457 wcex.hbrBackground = wc->hbrBackground;
458 wcex.lpszMenuName = wc->lpszMenuName;
459 wcex.lpszClassName = wc->lpszClassName;
461 return RegisterClassExA( &wcex );
465 /***********************************************************************
466 * RegisterClassW (USER32.@)
468 * See RegisterClassA.
470 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
474 wcex.cbSize = sizeof(wcex);
475 wcex.style = wc->style;
476 wcex.lpfnWndProc = wc->lpfnWndProc;
477 wcex.cbClsExtra = wc->cbClsExtra;
478 wcex.cbWndExtra = wc->cbWndExtra;
479 wcex.hInstance = wc->hInstance;
480 wcex.hIcon = wc->hIcon;
481 wcex.hCursor = wc->hCursor;
482 wcex.hbrBackground = wc->hbrBackground;
483 wcex.lpszMenuName = wc->lpszMenuName;
484 wcex.lpszClassName = wc->lpszClassName;
486 return RegisterClassExW( &wcex );
490 /***********************************************************************
491 * RegisterClassExA (USER32.@)
493 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
499 if (wc->hInstance == user32_module)
501 /* we can't register a class for user32 */
502 SetLastError( ERROR_INVALID_PARAMETER );
505 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
507 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
509 if (!(classPtr = CLASS_RegisterClass( atom, instance, !(wc->style & CS_GLOBALCLASS),
510 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
513 TRACE("atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
514 atom, wc->lpfnWndProc, instance, wc->hbrBackground,
515 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
517 classPtr->hIcon = wc->hIcon;
518 classPtr->hIconSm = wc->hIconSm;
519 classPtr->hCursor = wc->hCursor;
520 classPtr->hbrBackground = wc->hbrBackground;
521 classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, NULL );
522 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
523 release_class_ptr( classPtr );
528 /***********************************************************************
529 * RegisterClassExW (USER32.@)
531 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
537 if (wc->hInstance == user32_module)
539 /* we can't register a class for user32 */
540 SetLastError( ERROR_INVALID_PARAMETER );
543 if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL );
545 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
547 if (!(classPtr = CLASS_RegisterClass( atom, instance, !(wc->style & CS_GLOBALCLASS),
548 wc->style, wc->cbClsExtra, wc->cbWndExtra )))
551 TRACE("atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
552 atom, wc->lpfnWndProc, instance, wc->hbrBackground,
553 wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr );
555 classPtr->hIcon = wc->hIcon;
556 classPtr->hIconSm = wc->hIconSm;
557 classPtr->hCursor = wc->hCursor;
558 classPtr->hbrBackground = wc->hbrBackground;
559 classPtr->winproc = WINPROC_AllocProc( NULL, wc->lpfnWndProc );
560 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
561 release_class_ptr( classPtr );
566 /***********************************************************************
567 * UnregisterClassA (USER32.@)
569 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
571 ATOM atom = HIWORD(className) ? GlobalFindAtomA( className ) : LOWORD(className);
572 return UnregisterClassW( MAKEINTATOMW(atom), hInstance );
575 /***********************************************************************
576 * UnregisterClassW (USER32.@)
578 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
580 CLASS *classPtr = NULL;
581 ATOM atom = HIWORD(className) ? GlobalFindAtomW( className ) : LOWORD(className);
583 TRACE("%s %p %x\n",debugstr_w(className), hInstance, atom);
587 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
591 SERVER_START_REQ( destroy_class )
594 req->instance = hInstance;
595 if (!wine_server_call_err( req )) classPtr = reply->client_ptr;
599 if (classPtr) CLASS_FreeClass( classPtr );
600 return (classPtr != NULL);
604 /***********************************************************************
605 * GetClassWord (USER32.@)
607 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
612 if (offset < 0) return GetClassLongA( hwnd, offset );
614 TRACE("%p %x\n",hwnd, offset);
616 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
618 if (class == CLASS_OTHER_PROCESS)
620 SERVER_START_REQ( set_class_info )
624 req->extra_offset = offset;
625 req->extra_size = sizeof(retvalue);
626 if (!wine_server_call_err( req ))
627 memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) );
633 if (offset <= class->cbClsExtra - sizeof(WORD))
634 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) );
636 SetLastError( ERROR_INVALID_INDEX );
637 release_class_ptr( class );
642 /***********************************************************************
645 * Implementation of GetClassLong(Ptr)A/W
647 static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size,
651 ULONG_PTR retvalue = 0;
653 TRACE("%p %d\n", hwnd, offset);
655 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
657 if (class == CLASS_OTHER_PROCESS)
659 SERVER_START_REQ( set_class_info )
663 req->extra_offset = (offset >= 0) ? offset : -1;
664 req->extra_size = (offset >= 0) ? size : 0;
665 if (!wine_server_call_err( req ))
669 case GCLP_HBRBACKGROUND:
675 FIXME( "offset %d not supported on other process window %p\n", offset, hwnd );
676 SetLastError( ERROR_INVALID_HANDLE );
679 retvalue = reply->old_style;
682 retvalue = reply->old_win_extra;
685 retvalue = reply->old_extra;
688 retvalue = (ULONG_PTR)reply->old_instance;
691 retvalue = reply->old_atom;
696 if (size == sizeof(DWORD))
699 memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) );
703 memcpy( &retvalue, &reply->old_extra_value,
706 else SetLastError( ERROR_INVALID_INDEX );
717 if (offset <= class->cbClsExtra - size)
719 if (size == sizeof(DWORD))
722 memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) );
726 memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) );
729 SetLastError( ERROR_INVALID_INDEX );
730 release_class_ptr( class );
736 case GCLP_HBRBACKGROUND:
737 retvalue = (ULONG_PTR)class->hbrBackground;
740 retvalue = (ULONG_PTR)class->hCursor;
743 retvalue = (ULONG_PTR)class->hIcon;
746 retvalue = (ULONG_PTR)class->hIconSm;
749 retvalue = class->style;
752 retvalue = class->cbWndExtra;
755 retvalue = class->cbClsExtra;
758 retvalue = (ULONG_PTR)class->hInstance;
761 retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
764 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
766 retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class );
768 retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class );
771 retvalue = class->atomName;
774 SetLastError( ERROR_INVALID_INDEX );
777 release_class_ptr( class );
782 /***********************************************************************
783 * GetClassLongW (USER32.@)
785 DWORD WINAPI GetClassLongW( HWND hwnd, INT offset )
787 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE );
792 /***********************************************************************
793 * GetClassLongA (USER32.@)
795 DWORD WINAPI GetClassLongA( HWND hwnd, INT offset )
797 return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE );
801 /***********************************************************************
802 * SetClassWord (USER32.@)
804 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
809 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
811 TRACE("%p %d %x\n", hwnd, offset, newval);
813 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
815 SERVER_START_REQ( set_class_info )
818 req->flags = SET_CLASS_EXTRA;
819 req->extra_offset = offset;
820 req->extra_size = sizeof(newval);
821 memcpy( &req->extra_value, &newval, sizeof(newval) );
822 if (!wine_server_call_err( req ))
824 void *ptr = (char *)(class + 1) + offset;
825 memcpy( &retval, ptr, sizeof(retval) );
826 memcpy( ptr, &newval, sizeof(newval) );
830 release_class_ptr( class );
835 /***********************************************************************
838 * Implementation of SetClassLong(Ptr)A/W
840 static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval,
841 UINT size, BOOL unicode )
844 ULONG_PTR retval = 0;
846 TRACE("%p %d %lx\n", hwnd, offset, newval);
848 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
852 if (set_server_info( hwnd, offset, newval, size ))
854 void *ptr = (char *)(class + 1) + offset;
855 if ( size == sizeof(LONG) )
858 LONG newlong = newval;
859 memcpy( &retdword, ptr, sizeof(DWORD) );
860 memcpy( ptr, &newlong, sizeof(LONG) );
865 memcpy( &retval, ptr, sizeof(ULONG_PTR) );
866 memcpy( ptr, &newval, sizeof(LONG_PTR) );
874 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
876 CLASS_SetMenuNameA( class, (LPCSTR)newval );
877 retval = 0; /* Old value is now meaningless anyway */
880 retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode );
881 class->winproc = WINPROC_AllocProc( unicode ? NULL : (WNDPROC)newval,
882 unicode ? (WNDPROC)newval : NULL );
884 case GCLP_HBRBACKGROUND:
885 retval = (ULONG_PTR)class->hbrBackground;
886 class->hbrBackground = (HBRUSH)newval;
889 retval = (ULONG_PTR)class->hCursor;
890 class->hCursor = (HCURSOR)newval;
893 retval = (ULONG_PTR)class->hIcon;
894 class->hIcon = (HICON)newval;
897 retval = (ULONG_PTR)class->hIconSm;
898 class->hIconSm = (HICON)newval;
901 if (!set_server_info( hwnd, offset, newval, size )) break;
902 retval = class->style;
903 class->style = newval;
906 if (!set_server_info( hwnd, offset, newval, size )) break;
907 retval = class->cbWndExtra;
908 class->cbWndExtra = newval;
911 if (!set_server_info( hwnd, offset, newval, size )) break;
912 retval = (ULONG_PTR)class->hInstance;
913 class->hInstance = (HINSTANCE)newval;
916 if (!set_server_info( hwnd, offset, newval, size )) break;
917 retval = class->atomName;
918 class->atomName = newval;
920 case GCL_CBCLSEXTRA: /* cannot change this one */
921 SetLastError( ERROR_INVALID_PARAMETER );
924 SetLastError( ERROR_INVALID_INDEX );
927 release_class_ptr( class );
932 /***********************************************************************
933 * SetClassLongW (USER32.@)
935 DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
937 TRACE("%p %d %lx\n", hwnd, offset, newval);
939 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE );
943 /***********************************************************************
944 * SetClassLongA (USER32.@)
946 DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
948 TRACE("%p %d %lx\n", hwnd, offset, newval);
950 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE );
954 /***********************************************************************
955 * GetClassNameA (USER32.@)
957 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
959 INT ret = GlobalGetAtomNameA( GetClassLongA( hwnd, GCW_ATOM ), buffer, count );
961 TRACE("%p %s %x\n",hwnd, debugstr_a(buffer), count);
966 /***********************************************************************
967 * GetClassNameW (USER32.@)
969 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
971 INT ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), buffer, count );
973 TRACE("%p %s %x\n",hwnd, debugstr_w(buffer), count);
978 /***********************************************************************
979 * RealGetWindowClassA (USER32.@)
981 UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count )
983 return GetClassNameA( hwnd, buffer, count );
987 /***********************************************************************
988 * RealGetWindowClassW (USER32.@)
990 UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count )
992 return GetClassNameW( hwnd, buffer, count );
996 /***********************************************************************
997 * GetClassInfoA (USER32.@)
999 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc )
1002 UINT ret = GetClassInfoExA( hInstance, name, &wcex );
1006 wc->style = wcex.style;
1007 wc->lpfnWndProc = wcex.lpfnWndProc;
1008 wc->cbClsExtra = wcex.cbClsExtra;
1009 wc->cbWndExtra = wcex.cbWndExtra;
1010 wc->hInstance = wcex.hInstance;
1011 wc->hIcon = wcex.hIcon;
1012 wc->hCursor = wcex.hCursor;
1013 wc->hbrBackground = wcex.hbrBackground;
1014 wc->lpszMenuName = wcex.lpszMenuName;
1015 wc->lpszClassName = wcex.lpszClassName;
1021 /***********************************************************************
1022 * GetClassInfoW (USER32.@)
1024 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc )
1027 UINT ret = GetClassInfoExW( hInstance, name, &wcex );
1031 wc->style = wcex.style;
1032 wc->lpfnWndProc = wcex.lpfnWndProc;
1033 wc->cbClsExtra = wcex.cbClsExtra;
1034 wc->cbWndExtra = wcex.cbWndExtra;
1035 wc->hInstance = wcex.hInstance;
1036 wc->hIcon = wcex.hIcon;
1037 wc->hCursor = wcex.hCursor;
1038 wc->hbrBackground = wcex.hbrBackground;
1039 wc->lpszMenuName = wcex.lpszMenuName;
1040 wc->lpszClassName = wcex.lpszClassName;
1046 /***********************************************************************
1047 * GetClassInfoExA (USER32.@)
1049 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc )
1051 ATOM atom = HIWORD(name) ? GlobalFindAtomA( name ) : LOWORD(name);
1054 TRACE("%p %s %x %p\n", hInstance, debugstr_a(name), atom, wc);
1056 if (!hInstance) hInstance = user32_module;
1058 if (!atom || !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1060 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1063 wc->style = classPtr->style;
1064 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE );
1065 wc->cbClsExtra = classPtr->cbClsExtra;
1066 wc->cbWndExtra = classPtr->cbWndExtra;
1067 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1068 wc->hIcon = (HICON)classPtr->hIcon;
1069 wc->hIconSm = (HICON)classPtr->hIconSm;
1070 wc->hCursor = (HCURSOR)classPtr->hCursor;
1071 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1072 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1073 wc->lpszClassName = name;
1074 release_class_ptr( classPtr );
1076 /* We must return the atom of the class here instead of just TRUE. */
1081 /***********************************************************************
1082 * GetClassInfoExW (USER32.@)
1084 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc )
1086 ATOM atom = HIWORD(name) ? GlobalFindAtomW( name ) : LOWORD(name);
1089 TRACE("%p %s %x %p\n", hInstance, debugstr_w(name), atom, wc);
1091 if (!hInstance) hInstance = user32_module;
1093 if (!atom || !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1095 SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
1098 wc->style = classPtr->style;
1099 wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE );
1100 wc->cbClsExtra = classPtr->cbClsExtra;
1101 wc->cbWndExtra = classPtr->cbWndExtra;
1102 wc->hInstance = (hInstance == user32_module) ? 0 : hInstance;
1103 wc->hIcon = (HICON)classPtr->hIcon;
1104 wc->hIconSm = (HICON)classPtr->hIconSm;
1105 wc->hCursor = (HCURSOR)classPtr->hCursor;
1106 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1107 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1108 wc->lpszClassName = name;
1109 release_class_ptr( classPtr );
1111 /* We must return the atom of the class here instead of just TRUE. */
1116 #if 0 /* toolhelp is in kernel, so this cannot work */
1118 /***********************************************************************
1119 * ClassFirst (TOOLHELP.69)
1121 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1123 TRACE("%p\n",pClassEntry);
1124 pClassEntry->wNext = 1;
1125 return ClassNext16( pClassEntry );
1129 /***********************************************************************
1130 * ClassNext (TOOLHELP.70)
1132 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1135 CLASS *class = firstClass;
1137 TRACE("%p\n",pClassEntry);
1139 if (!pClassEntry->wNext) return FALSE;
1140 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1143 pClassEntry->wNext = 0;
1146 pClassEntry->hInst = class->hInstance;
1147 pClassEntry->wNext++;
1148 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1149 sizeof(pClassEntry->szClassName) );
1154 /* 64bit versions */
1156 #ifdef GetClassLongPtrA
1157 #undef GetClassLongPtrA
1160 #ifdef GetClassLongPtrW
1161 #undef GetClassLongPtrW
1164 #ifdef SetClassLongPtrA
1165 #undef SetClassLongPtrA
1168 #ifdef SetClassLongPtrW
1169 #undef SetClassLongPtrW
1172 /***********************************************************************
1173 * GetClassLongPtrA (USER32.@)
1175 ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset )
1177 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE );
1180 /***********************************************************************
1181 * GetClassLongPtrW (USER32.@)
1183 ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset )
1185 return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE );
1188 /***********************************************************************
1189 * SetClassLongPtrW (USER32.@)
1191 ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval )
1193 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE );
1196 /***********************************************************************
1197 * SetClassLongPtrA (USER32.@)
1199 ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval )
1201 return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE );