2 * Window classes functions
4 * Copyright 1993, 1996 Alexandre Julliard
5 * 1998 Juergen Schmied (jsch)
7 * FIXME: In win32 all classes are local. They are registered at
8 * program start. Processes CANNOT share classes. (Source: some
9 * win31->NT migration book)
11 * FIXME: There seems to be a general problem with hInstance in WINE
12 * classes are getting registered with wrong hInstance.
16 #include "wine/port.h"
21 #include "wine/winbase16.h"
25 #include "wine/winuser16.h"
26 #include "wine/unicode.h"
32 #include "debugtools.h"
34 DEFAULT_DEBUG_CHANNEL(class);
36 typedef struct tagCLASS
38 struct tagCLASS *next; /* Next class */
39 struct tagCLASS *prev; /* Prev class */
40 UINT cWindows; /* Count of existing windows */
41 UINT style; /* Class style */
42 HWINDOWPROC winprocA; /* Window procedure (ASCII) */
43 HWINDOWPROC winprocW; /* Window procedure (Unicode) */
44 INT cbClsExtra; /* Class extra bytes */
45 INT cbWndExtra; /* Window extra bytes */
46 LPWSTR menuName; /* Default menu name (Unicode followed by ASCII) */
47 SEGPTR segMenuName; /* Default menu name as SEGPTR */
48 struct tagDCE *dce; /* Class DCE (if CS_CLASSDC) */
49 HINSTANCE hInstance; /* Module that created the task */
50 HICON hIcon; /* Default icon */
51 HICON hIconSm; /* Default small icon */
52 HCURSOR hCursor; /* Default cursor */
53 HBRUSH hbrBackground; /* Default background */
54 ATOM atomName; /* Name of the class */
57 static CLASS *firstClass;
59 /***********************************************************************
62 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
64 WND *ptr = WIN_GetPtr( hwnd );
68 if (ptr != WND_OTHER_PROCESS) return ptr->class;
69 if (IsWindow( hwnd )) /* check other processes */
73 /* modifying classes in other processes is not allowed */
74 SetLastError( ERROR_ACCESS_DENIED );
77 FIXME( "reading from class of other process window %04x\n", hwnd );
78 /* DbgBreakPoint(); */
81 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
86 /***********************************************************************
89 inline static void release_class_ptr( CLASS *ptr )
95 /***********************************************************************
98 * Get the class winproc for a given proc type
100 static WNDPROC16 CLASS_GetProc( CLASS *classPtr, WINDOWPROCTYPE type )
102 HWINDOWPROC proc = classPtr->winprocA;
104 if (classPtr->winprocW)
106 /* if we have a Unicode proc, use it if we have no ASCII proc
107 * or if we have both and Unicode was requested
109 if (!proc || type == WIN_PROC_32W) proc = classPtr->winprocW;
111 return WINPROC_GetProc( proc, type );
115 /***********************************************************************
118 * Set the class winproc for a given proc type.
119 * Returns the previous window proc.
121 static WNDPROC16 CLASS_SetProc( CLASS *classPtr, WNDPROC newproc, WINDOWPROCTYPE type )
123 HWINDOWPROC *proc = &classPtr->winprocA;
126 if (classPtr->winprocW)
128 /* if we have a Unicode proc, use it if we have no ASCII proc
129 * or if we have both and Unicode was requested
131 if (!*proc || type == WIN_PROC_32W) proc = &classPtr->winprocW;
133 ret = WINPROC_GetProc( *proc, type );
134 WINPROC_SetProc( proc, (HWINDOWPROC)newproc, type, WIN_PROC_CLASS );
135 /* now free the one that we didn't set */
136 if (classPtr->winprocA && classPtr->winprocW)
138 if (proc == &classPtr->winprocA)
140 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
141 classPtr->winprocW = 0;
145 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
146 classPtr->winprocA = 0;
153 /***********************************************************************
156 * Get the menu name as a ASCII string.
158 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
160 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
161 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
165 /***********************************************************************
166 * CLASS_GetMenuName16
168 * Get the menu name as a SEGPTR.
170 inline static SEGPTR CLASS_GetMenuName16( CLASS *classPtr )
172 if (!HIWORD(classPtr->menuName)) return (SEGPTR)classPtr->menuName;
173 if (!classPtr->segMenuName)
174 classPtr->segMenuName = MapLS( CLASS_GetMenuNameA(classPtr) );
175 return classPtr->segMenuName;
179 /***********************************************************************
182 * Get the menu name as a Unicode string.
184 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
186 return classPtr->menuName;
190 /***********************************************************************
193 * Set the menu name in a class structure by copying the string.
195 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
197 UnMapLS( classPtr->segMenuName );
198 classPtr->segMenuName = 0;
199 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
202 DWORD lenA = strlen(name) + 1;
203 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
204 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
205 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
206 memcpy( classPtr->menuName + lenW, name, lenA );
208 else classPtr->menuName = (LPWSTR)name;
212 /***********************************************************************
215 * Set the menu name in a class structure by copying the string.
217 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
219 UnMapLS( classPtr->segMenuName );
220 classPtr->segMenuName = 0;
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 BOOL CLASS_FreeClass( CLASS *classPtr )
242 TRACE("%p\n", classPtr);
244 /* Check if we can remove this class */
246 if (classPtr->cWindows > 0)
248 SetLastError( ERROR_CLASS_HAS_WINDOWS );
252 /* Remove the class from the linked list */
254 if (classPtr->next) classPtr->next->prev = classPtr->prev;
255 if (classPtr->prev) classPtr->prev->next = classPtr->next;
256 else firstClass = classPtr->next;
258 /* Delete the class */
260 if (classPtr->dce) DCE_FreeDCE( classPtr->dce );
261 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
262 DeleteObject( classPtr->hbrBackground );
263 GlobalDeleteAtom( classPtr->atomName );
264 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
265 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
266 UnMapLS( classPtr->segMenuName );
267 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
268 HeapFree( GetProcessHeap(), 0, classPtr );
273 /***********************************************************************
274 * CLASS_FreeModuleClasses
276 void CLASS_FreeModuleClasses( HMODULE16 hModule )
280 TRACE("0x%08x\n", hModule);
283 for (ptr = firstClass; ptr; ptr = next)
286 if (ptr->hInstance == hModule) CLASS_FreeClass( ptr );
292 /***********************************************************************
293 * CLASS_FindClassByAtom
295 * Return a pointer to the class.
296 * hinstance has been normalized by the caller.
299 * 980805 a local class will be found now if registred with hInst=0
300 * and looed up with a hInst!=0. msmoney does it (jsch)
302 * Local class registered with a USER instance handle are found as if
303 * they were global classes.
305 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
307 CLASS * class, *tclass = 0, *user_class = 0;
308 HINSTANCE16 hUser = GetModuleHandle16("USER");
310 TRACE("0x%08x 0x%08x\n", atom, hinstance);
312 /* First search task-specific classes */
314 for (class = firstClass; (class); class = class->next)
316 if (class->style & CS_GLOBALCLASS) continue;
317 if (class->atomName == atom)
319 if (hinstance==class->hInstance || hinstance==0xffff)
321 TRACE("-- found local %p\n", class);
324 if (class->hInstance == 0) tclass = class;
325 else if(class->hInstance == hUser)
332 /* Then search global classes */
334 for (class = firstClass; (class); class = class->next)
336 if (!(class->style & CS_GLOBALCLASS)) continue;
337 if (class->atomName == atom)
339 TRACE("-- found global %p\n", class);
344 /* Check if there was a local class registered with USER */
347 TRACE("--found local USER class %p\n", user_class);
351 /* Then check if there was a local class with hInst=0*/
354 WARN("-- found local Class registred with hInst=0\n");
358 TRACE("-- not found\n");
363 /***********************************************************************
364 * CLASS_RegisterClass
366 * The real RegisterClass() functionality.
368 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance,
369 DWORD style, INT classExtra, INT winExtra )
373 TRACE("atom=0x%x hinst=0x%x style=0x%lx clExtr=0x%x winExtr=0x%x\n",
374 atom, hInstance, style, classExtra, winExtra );
376 /* Check if a class with this name already exists */
377 classPtr = CLASS_FindClassByAtom( atom, hInstance );
380 /* Class can be created only if it is local and */
381 /* if the class with the same name is global. */
383 if ((style & CS_GLOBALCLASS) || !(classPtr->style & CS_GLOBALCLASS))
385 SetLastError( ERROR_CLASS_ALREADY_EXISTS );
390 /* Fix the extra bytes value */
392 if (classExtra < 0) classExtra = 0;
393 else if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
394 WARN("Class extra bytes %d is > 40\n", classExtra);
395 if (winExtra < 0) winExtra = 0;
396 else if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
397 WARN("Win extra bytes %d is > 40\n", winExtra );
399 /* Create the class */
401 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
402 if (!classPtr) return NULL;
403 classPtr->style = style;
404 classPtr->cbWndExtra = winExtra;
405 classPtr->cbClsExtra = classExtra;
406 classPtr->hInstance = hInstance;
407 classPtr->atomName = atom;
408 classPtr->dce = (style & CS_CLASSDC) ? DCE_AllocDCE( 0, DCE_CLASS_DC ) : NULL;
410 /* Other non-null values must be set by caller */
412 if ((classPtr->next = firstClass)) firstClass->prev = classPtr;
413 firstClass = classPtr;
418 /***********************************************************************
419 * CLASS_UnregisterClass
421 * The real UnregisterClass() functionality.
423 static BOOL CLASS_UnregisterClass( ATOM atom, HINSTANCE hInstance )
430 (classPtr = CLASS_FindClassByAtom( atom, hInstance )) &&
431 (!hInstance || classPtr->hInstance == hInstance))
433 ret = CLASS_FreeClass( classPtr );
435 else SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
442 /***********************************************************************
443 * CLASS_RegisterBuiltinClass
445 * Register a builtin control class.
446 * This allows having both ASCII and Unicode winprocs for the same class.
448 ATOM CLASS_RegisterBuiltinClass( const struct builtin_class_descr *descr )
453 if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
455 if (!(classPtr = CLASS_RegisterClass( atom, 0, descr->style, 0, descr->extra )))
457 GlobalDeleteAtom( atom );
461 classPtr->hCursor = LoadCursorA( 0, descr->cursor );
462 classPtr->hbrBackground = descr->brush;
464 if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)descr->procA,
465 WIN_PROC_32A, WIN_PROC_CLASS );
466 if (descr->procW) WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)descr->procW,
467 WIN_PROC_32W, WIN_PROC_CLASS );
472 /***********************************************************************
475 * Add a new window using this class, and return the necessary
476 * information for creating the window.
478 CLASS *CLASS_AddWindow( ATOM atom, HINSTANCE inst, WINDOWPROCTYPE type,
479 INT *winExtra, WNDPROC *winproc, DWORD *style, struct tagDCE **dce )
482 if (type == WIN_PROC_16) inst = GetExePtr(inst);
484 if (!(class = CLASS_FindClassByAtom( atom, inst ))) return NULL;
487 if (type == WIN_PROC_32W)
489 if (!(*winproc = class->winprocW)) *winproc = class->winprocA;
493 if (!(*winproc = class->winprocA)) *winproc = class->winprocW;
495 *winExtra = class->cbWndExtra;
496 *style = class->style;
502 /***********************************************************************
505 * Remove a window from the class window count.
507 void CLASS_RemoveWindow( CLASS *cls )
509 if (cls && cls->cWindows) cls->cWindows--;
513 /***********************************************************************
514 * RegisterClass (USER.57)
516 ATOM WINAPI RegisterClass16( const WNDCLASS16 *wc )
520 int iSmIconWidth, iSmIconHeight;
521 HINSTANCE16 hInstance=GetExePtr(wc->hInstance);
523 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
524 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
525 wc->cbClsExtra, wc->cbWndExtra )))
527 GlobalDeleteAtom( atom );
531 TRACE("atom=%04x wndproc=%08lx hinst=%04x "
532 "bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
533 atom, (DWORD)wc->lpfnWndProc, hInstance,
534 wc->hbrBackground, wc->style, wc->cbClsExtra,
535 wc->cbWndExtra, classPtr,
536 HIWORD(wc->lpszClassName) ?
537 (char *)MapSL(wc->lpszClassName) : "" );
539 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
540 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
542 classPtr->hIcon = wc->hIcon;
543 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
544 iSmIconWidth, iSmIconHeight,
545 LR_COPYFROMRESOURCE);
546 classPtr->hCursor = wc->hCursor;
547 classPtr->hbrBackground = wc->hbrBackground;
549 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
550 WIN_PROC_16, WIN_PROC_CLASS );
551 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
557 /***********************************************************************
558 * RegisterClassA (USER32.@)
560 * >0: Unique identifier
563 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
566 int iSmIconWidth, iSmIconHeight;
569 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
571 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
572 wc->cbClsExtra, wc->cbWndExtra )))
574 GlobalDeleteAtom( atom );
578 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
579 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
580 wc->hbrBackground, wc->style, wc->cbClsExtra,
581 wc->cbWndExtra, classPtr,
582 HIWORD(wc->lpszClassName) ? wc->lpszClassName : "" );
584 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
585 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
587 classPtr->hIcon = wc->hIcon;
588 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
589 iSmIconWidth, iSmIconHeight,
590 LR_COPYFROMRESOURCE);
591 classPtr->hCursor = (HCURSOR16)wc->hCursor;
592 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
594 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
595 WIN_PROC_32A, WIN_PROC_CLASS );
596 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
601 /***********************************************************************
602 * RegisterClassW (USER32.@)
604 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
607 int iSmIconWidth, iSmIconHeight;
610 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
612 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
613 wc->cbClsExtra, wc->cbWndExtra )))
615 GlobalDeleteAtom( atom );
619 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
620 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
621 wc->hbrBackground, wc->style, wc->cbClsExtra,
622 wc->cbWndExtra, classPtr );
624 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
625 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
627 classPtr->hIcon = wc->hIcon;
628 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
629 iSmIconWidth, iSmIconHeight,
630 LR_COPYFROMRESOURCE);
631 classPtr->hCursor = (HCURSOR16)wc->hCursor;
632 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
634 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
635 WIN_PROC_32W, WIN_PROC_CLASS );
636 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
641 /***********************************************************************
642 * RegisterClassEx (USER.397)
644 ATOM WINAPI RegisterClassEx16( const WNDCLASSEX16 *wc )
648 HINSTANCE16 hInstance = GetExePtr( wc->hInstance );
650 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
651 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
652 wc->cbClsExtra, wc->cbWndExtra )))
654 GlobalDeleteAtom( atom );
658 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
659 atom, (DWORD)wc->lpfnWndProc, hInstance,
660 wc->hbrBackground, wc->style, wc->cbClsExtra,
661 wc->cbWndExtra, classPtr );
663 classPtr->hIcon = wc->hIcon;
664 classPtr->hIconSm = wc->hIconSm;
665 classPtr->hCursor = wc->hCursor;
666 classPtr->hbrBackground = wc->hbrBackground;
668 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
669 WIN_PROC_16, WIN_PROC_CLASS );
670 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
675 /***********************************************************************
676 * RegisterClassExA (USER32.@)
678 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
683 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
685 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
686 wc->cbClsExtra, wc->cbWndExtra )))
688 GlobalDeleteAtom( atom );
692 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
693 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
694 wc->hbrBackground, wc->style, wc->cbClsExtra,
695 wc->cbWndExtra, classPtr );
697 classPtr->hIcon = (HICON16)wc->hIcon;
698 classPtr->hIconSm = (HICON16)wc->hIconSm;
699 classPtr->hCursor = (HCURSOR16)wc->hCursor;
700 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
701 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
702 WIN_PROC_32A, WIN_PROC_CLASS );
703 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
708 /***********************************************************************
709 * RegisterClassExW (USER32.@)
711 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
716 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
718 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
719 wc->cbClsExtra, wc->cbWndExtra )))
721 GlobalDeleteAtom( atom );
725 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
726 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
727 wc->hbrBackground, wc->style, wc->cbClsExtra,
728 wc->cbWndExtra, classPtr );
730 classPtr->hIcon = (HICON16)wc->hIcon;
731 classPtr->hIconSm = (HICON16)wc->hIconSm;
732 classPtr->hCursor = (HCURSOR16)wc->hCursor;
733 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
734 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
735 WIN_PROC_32W, WIN_PROC_CLASS );
736 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
741 /***********************************************************************
742 * UnregisterClass (USER.403)
744 BOOL16 WINAPI UnregisterClass16( LPCSTR className, HINSTANCE16 hInstance )
746 return UnregisterClassA( className, GetExePtr( hInstance ) );
749 /***********************************************************************
750 * UnregisterClassA (USER32.@)
753 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
755 TRACE("%s %x\n",debugres_a(className), hInstance);
756 return CLASS_UnregisterClass( GlobalFindAtomA( className ), hInstance );
759 /***********************************************************************
760 * UnregisterClassW (USER32.@)
762 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
764 TRACE("%s %x\n",debugres_w(className), hInstance);
765 return CLASS_UnregisterClass( GlobalFindAtomW( className ), hInstance );
769 /***********************************************************************
770 * GetClassWord (USER32.@)
772 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
777 if (offset < 0) return GetClassLongA( hwnd, offset );
779 TRACE("%x %x\n",hwnd, offset);
781 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
783 if (offset <= class->cbClsExtra - sizeof(WORD))
784 retvalue = GET_WORD((char *)(class + 1) + offset);
786 SetLastError( ERROR_INVALID_INDEX );
787 release_class_ptr( class );
792 /***********************************************************************
793 * GetClassLong (USER.131)
795 LONG WINAPI GetClassLong16( HWND16 hwnd16, INT16 offset )
799 HWND hwnd = (HWND)(ULONG_PTR)hwnd16; /* no need for full handle */
801 TRACE("%x %d\n",hwnd, offset);
806 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
807 ret = (LONG)CLASS_GetProc( class, WIN_PROC_16 );
808 release_class_ptr( class );
811 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
812 ret = (LONG)CLASS_GetMenuName16( class );
813 release_class_ptr( class );
816 return GetClassLongA( hwnd, offset );
821 /***********************************************************************
822 * GetClassLongA (USER32.@)
824 LONG WINAPI GetClassLongA( HWND hwnd, INT offset )
829 TRACE("%x %d\n", hwnd, offset);
831 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
835 if (offset <= class->cbClsExtra - sizeof(LONG))
836 retvalue = GET_DWORD((char *)(class + 1) + offset);
838 SetLastError( ERROR_INVALID_INDEX );
839 release_class_ptr( class );
845 case GCL_HBRBACKGROUND:
846 retvalue = (LONG)class->hbrBackground;
849 retvalue = (LONG)class->hCursor;
852 retvalue = (LONG)class->hIcon;
855 retvalue = (LONG)class->hIconSm;
858 retvalue = (LONG)class->style;
861 retvalue = (LONG)class->cbWndExtra;
864 retvalue = (LONG)class->cbClsExtra;
867 retvalue = (LONG)class->hInstance;
870 retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32A );
873 retvalue = (LONG)CLASS_GetMenuNameA( class );
876 retvalue = (DWORD)class->atomName;
879 SetLastError( ERROR_INVALID_INDEX );
882 release_class_ptr( class );
887 /***********************************************************************
888 * GetClassLongW (USER32.@)
890 LONG WINAPI GetClassLongW( HWND hwnd, INT offset )
895 if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
896 return GetClassLongA( hwnd, offset );
898 TRACE("%x %d\n", hwnd, offset);
900 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
902 if (offset == GCL_WNDPROC)
903 retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32W );
904 else /* GCL_MENUNAME */
905 retvalue = (LONG)CLASS_GetMenuNameW( class );
907 release_class_ptr( class );
912 /***********************************************************************
913 * SetClassWord (USER32.@)
915 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
920 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
922 TRACE("%x %d %x\n", hwnd, offset, newval);
924 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
926 if (offset <= class->cbClsExtra - sizeof(WORD))
928 void *ptr = (char *)(class + 1) + offset;
929 retval = GET_WORD(ptr);
930 PUT_WORD( ptr, newval );
932 else SetLastError( ERROR_INVALID_INDEX );
934 release_class_ptr( class );
939 /***********************************************************************
940 * SetClassLong (USER.132)
942 LONG WINAPI SetClassLong16( HWND16 hwnd16, INT16 offset, LONG newval )
946 HWND hwnd = (HWND)(ULONG_PTR)hwnd16; /* no need for full handle */
948 TRACE("%x %d %lx\n", hwnd, offset, newval);
953 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
954 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_16 );
955 release_class_ptr( class );
958 newval = (LONG)MapSL( newval );
961 return SetClassLongA( hwnd, offset, newval );
966 /***********************************************************************
967 * SetClassLongA (USER32.@)
969 LONG WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
974 TRACE("%x %d %lx\n", hwnd, offset, newval);
976 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
980 if (offset <= class->cbClsExtra - sizeof(LONG))
982 void *ptr = (char *)(class + 1) + offset;
983 retval = GET_DWORD(ptr);
984 PUT_DWORD( ptr, newval );
986 else SetLastError( ERROR_INVALID_INDEX );
991 CLASS_SetMenuNameA( class, (LPCSTR)newval );
992 retval = 0; /* Old value is now meaningless anyway */
995 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32A );
997 case GCL_HBRBACKGROUND:
998 retval = (LONG)class->hbrBackground;
999 class->hbrBackground = newval;
1002 retval = (LONG)class->hCursor;
1003 class->hCursor = newval;
1006 retval = (LONG)class->hIcon;
1007 class->hIcon = newval;
1010 retval = (LONG)class->hIconSm;
1011 class->hIconSm = newval;
1014 retval = (LONG)class->style;
1015 class->style = newval;
1017 case GCL_CBWNDEXTRA:
1018 retval = (LONG)class->cbWndExtra;
1019 class->cbWndExtra = newval;
1022 retval = (LONG)class->hInstance;
1023 class->hInstance = newval;
1026 retval = (DWORD)class->atomName;
1027 class->atomName = newval;
1029 case GCL_CBCLSEXTRA: /* cannot change this one */
1030 SetLastError( ERROR_INVALID_PARAMETER );
1033 SetLastError( ERROR_INVALID_INDEX );
1036 release_class_ptr( class );
1041 /***********************************************************************
1042 * SetClassLongW (USER32.@)
1044 LONG WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
1049 if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
1050 return SetClassLongA( hwnd, offset, newval );
1052 TRACE("%x %d %lx\n", hwnd, offset, newval);
1054 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
1056 if (offset == GCL_WNDPROC)
1057 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32W );
1058 else /* GCL_MENUNAME */
1060 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
1061 retval = 0; /* Old value is now meaningless anyway */
1063 release_class_ptr( class );
1068 /***********************************************************************
1069 * GetClassNameA (USER32.@)
1071 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
1073 INT ret = GlobalGetAtomNameA( GetClassLongA( hwnd, GCW_ATOM ), buffer, count );
1075 TRACE("%x %s %x\n",hwnd, debugstr_a(buffer), count);
1080 /***********************************************************************
1081 * GetClassNameW (USER32.@)
1083 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1085 INT ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), buffer, count );
1087 TRACE("%x %s %x\n",hwnd, debugstr_w(buffer), count);
1092 /***********************************************************************
1093 * GetClassInfo (USER.404)
1095 BOOL16 WINAPI GetClassInfo16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASS16 *wc )
1100 TRACE("%x %s %p\n",hInstance, debugres_a(MapSL(name)), wc);
1102 hInstance = GetExePtr( hInstance );
1103 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1104 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1106 if ((hInstance != classPtr->hInstance) &&
1107 !(classPtr->style & CS_GLOBALCLASS)) /*BWCC likes to pass hInstance=0*/
1109 wc->style = (UINT16)classPtr->style;
1110 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1111 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1112 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1113 wc->hInstance = classPtr->style & CS_GLOBALCLASS ? GetModuleHandle16("USER") : (HINSTANCE16)classPtr->hInstance;
1114 wc->hIcon = classPtr->hIcon;
1115 wc->hCursor = classPtr->hCursor;
1116 wc->hbrBackground = classPtr->hbrBackground;
1117 wc->lpszClassName = name;
1118 wc->lpszMenuName = CLASS_GetMenuName16( classPtr );
1123 /***********************************************************************
1124 * GetClassInfoA (USER32.@)
1126 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name,
1132 TRACE("%x %p %p\n",hInstance, name, wc);
1134 /* workaround: if hInstance=NULL you expect to get the system classes
1135 but this classes (as example from comctl32.dll SysListView) won't be
1136 registered with hInstance=NULL in WINE because of the late loading
1137 of this dll. fixes file dialogs in WinWord95 (jsch)*/
1139 if (!(atom=GlobalFindAtomA(name)) || !(classPtr=CLASS_FindClassByAtom(atom,hInstance)))
1142 if (!(classPtr->style & CS_GLOBALCLASS) &&
1143 classPtr->hInstance &&
1144 (hInstance != classPtr->hInstance))
1146 if (hInstance) return FALSE;
1147 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",name);
1150 wc->style = classPtr->style;
1151 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1152 wc->cbClsExtra = classPtr->cbClsExtra;
1153 wc->cbWndExtra = classPtr->cbWndExtra;
1154 wc->hInstance = hInstance;
1155 wc->hIcon = (HICON)classPtr->hIcon;
1156 wc->hCursor = (HCURSOR)classPtr->hCursor;
1157 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1158 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1159 wc->lpszClassName = name;
1164 /***********************************************************************
1165 * GetClassInfoW (USER32.@)
1167 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name,
1173 TRACE("%x %p %p\n",hInstance, name, wc);
1175 if ( !(atom=GlobalFindAtomW(name)) ||
1176 !(classPtr=CLASS_FindClassByAtom(atom,hInstance))
1180 if (!(classPtr->style & CS_GLOBALCLASS) &&
1181 classPtr->hInstance &&
1182 (hInstance != classPtr->hInstance))
1184 if (hInstance) return FALSE;
1185 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",debugstr_w(name));
1187 wc->style = classPtr->style;
1188 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1189 wc->cbClsExtra = classPtr->cbClsExtra;
1190 wc->cbWndExtra = classPtr->cbWndExtra;
1191 wc->hInstance = hInstance;
1192 wc->hIcon = (HICON)classPtr->hIcon;
1193 wc->hCursor = (HCURSOR)classPtr->hCursor;
1194 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1195 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1196 wc->lpszClassName = name;
1201 /***********************************************************************
1202 * GetClassInfoEx (USER.398)
1204 * FIXME: this is just a guess, I have no idea if GetClassInfoEx() is the
1205 * same in Win16 as in Win32. --AJ
1207 BOOL16 WINAPI GetClassInfoEx16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASSEX16 *wc )
1212 TRACE("%x %s %p\n",hInstance,debugres_a( MapSL(name) ), wc);
1214 hInstance = GetExePtr( hInstance );
1215 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1216 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1217 (hInstance != classPtr->hInstance)) return FALSE;
1218 wc->style = classPtr->style;
1219 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1220 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1221 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1222 wc->hInstance = (HINSTANCE16)classPtr->hInstance;
1223 wc->hIcon = classPtr->hIcon;
1224 wc->hIconSm = classPtr->hIconSm;
1225 wc->hCursor = classPtr->hCursor;
1226 wc->hbrBackground = classPtr->hbrBackground;
1227 wc->lpszClassName = (SEGPTR)0;
1228 wc->lpszMenuName = CLASS_GetMenuName16( classPtr );
1229 wc->lpszClassName = name;
1231 /* We must return the atom of the class here instead of just TRUE. */
1236 /***********************************************************************
1237 * GetClassInfoExA (USER32.@)
1239 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name,
1245 TRACE("%x %p %p\n",hInstance, name, wc);
1247 if (!(atom = GlobalFindAtomA( name )) ||
1248 !(classPtr = CLASS_FindClassByAtom( atom, hInstance ))
1249 /*|| (hInstance != classPtr->hInstance) */ ) return FALSE;
1250 wc->style = classPtr->style;
1251 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1252 wc->cbClsExtra = classPtr->cbClsExtra;
1253 wc->cbWndExtra = classPtr->cbWndExtra;
1254 wc->hInstance = classPtr->hInstance;
1255 wc->hIcon = (HICON)classPtr->hIcon;
1256 wc->hIconSm = (HICON)classPtr->hIconSm;
1257 wc->hCursor = (HCURSOR)classPtr->hCursor;
1258 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1259 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1260 wc->lpszClassName = name;
1262 /* We must return the atom of the class here instead of just TRUE. */
1267 /***********************************************************************
1268 * GetClassInfoExW (USER32.@)
1270 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name,
1276 TRACE("%x %p %p\n",hInstance, name, wc);
1278 if (!(atom = GlobalFindAtomW( name )) ||
1279 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1280 (hInstance != classPtr->hInstance)) return FALSE;
1281 wc->style = classPtr->style;
1282 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1283 wc->cbClsExtra = classPtr->cbClsExtra;
1284 wc->cbWndExtra = classPtr->cbWndExtra;
1285 wc->hInstance = classPtr->hInstance;
1286 wc->hIcon = (HICON)classPtr->hIcon;
1287 wc->hIconSm = (HICON)classPtr->hIconSm;
1288 wc->hCursor = (HCURSOR)classPtr->hCursor;
1289 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1290 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1291 wc->lpszClassName = name;
1293 /* We must return the atom of the class here instead of just TRUE. */
1298 #if 0 /* toolhelp is in kernel, so this cannot work */
1300 /***********************************************************************
1301 * ClassFirst (TOOLHELP.69)
1303 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1305 TRACE("%p\n",pClassEntry);
1306 pClassEntry->wNext = 1;
1307 return ClassNext16( pClassEntry );
1311 /***********************************************************************
1312 * ClassNext (TOOLHELP.70)
1314 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1317 CLASS *class = firstClass;
1319 TRACE("%p\n",pClassEntry);
1321 if (!pClassEntry->wNext) return FALSE;
1322 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1325 pClassEntry->wNext = 0;
1328 pClassEntry->hInst = class->hInstance;
1329 pClassEntry->wNext++;
1330 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1331 sizeof(pClassEntry->szClassName) );