2 * Window classes functions
4 * Copyright 1993, 1996 Alexandre Julliard
5 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * FIXME: In win32 all classes are local. They are registered at
22 * program start. Processes CANNOT share classes. (Source: some
23 * win31->NT migration book)
25 * FIXME: There seems to be a general problem with hInstance in WINE
26 * classes are getting registered with wrong hInstance.
30 #include "wine/port.h"
35 #include "wine/winbase16.h"
39 #include "wine/winuser16.h"
40 #include "wine/unicode.h"
46 #include "wine/debug.h"
48 WINE_DEFAULT_DEBUG_CHANNEL(class);
50 typedef struct tagCLASS
52 struct tagCLASS *next; /* Next class */
53 struct tagCLASS *prev; /* Prev class */
54 UINT cWindows; /* Count of existing windows */
55 UINT style; /* Class style */
56 HWINDOWPROC winprocA; /* Window procedure (ASCII) */
57 HWINDOWPROC winprocW; /* Window procedure (Unicode) */
58 INT cbClsExtra; /* Class extra bytes */
59 INT cbWndExtra; /* Window extra bytes */
60 LPWSTR menuName; /* Default menu name (Unicode followed by ASCII) */
61 SEGPTR segMenuName; /* Default menu name as SEGPTR */
62 struct tagDCE *dce; /* Class DCE (if CS_CLASSDC) */
63 HINSTANCE hInstance; /* Module that created the task */
64 HICON hIcon; /* Default icon */
65 HICON hIconSm; /* Default small icon */
66 HCURSOR hCursor; /* Default cursor */
67 HBRUSH hbrBackground; /* Default background */
68 ATOM atomName; /* Name of the class */
71 static CLASS *firstClass;
73 /***********************************************************************
76 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
78 WND *ptr = WIN_GetPtr( hwnd );
82 if (ptr != WND_OTHER_PROCESS) return ptr->class;
83 if (IsWindow( hwnd )) /* check other processes */
87 /* modifying classes in other processes is not allowed */
88 SetLastError( ERROR_ACCESS_DENIED );
91 FIXME( "reading from class of other process window %04x\n", hwnd );
92 /* DbgBreakPoint(); */
95 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
100 /***********************************************************************
103 inline static void release_class_ptr( CLASS *ptr )
109 /***********************************************************************
112 * Get the class winproc for a given proc type
114 static WNDPROC16 CLASS_GetProc( CLASS *classPtr, WINDOWPROCTYPE type )
116 HWINDOWPROC proc = classPtr->winprocA;
118 if (classPtr->winprocW)
120 /* if we have a Unicode proc, use it if we have no ASCII proc
121 * or if we have both and Unicode was requested
123 if (!proc || type == WIN_PROC_32W) proc = classPtr->winprocW;
125 return WINPROC_GetProc( proc, type );
129 /***********************************************************************
132 * Set the class winproc for a given proc type.
133 * Returns the previous window proc.
135 static WNDPROC16 CLASS_SetProc( CLASS *classPtr, WNDPROC newproc, WINDOWPROCTYPE type )
137 HWINDOWPROC *proc = &classPtr->winprocA;
140 if (classPtr->winprocW)
142 /* if we have a Unicode proc, use it if we have no ASCII proc
143 * or if we have both and Unicode was requested
145 if (!*proc || type == WIN_PROC_32W) proc = &classPtr->winprocW;
147 ret = WINPROC_GetProc( *proc, type );
148 WINPROC_SetProc( proc, (HWINDOWPROC)newproc, type, WIN_PROC_CLASS );
149 /* now free the one that we didn't set */
150 if (classPtr->winprocA && classPtr->winprocW)
152 if (proc == &classPtr->winprocA)
154 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
155 classPtr->winprocW = 0;
159 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
160 classPtr->winprocA = 0;
167 /***********************************************************************
170 * Get the menu name as a ASCII string.
172 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
174 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
175 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
179 /***********************************************************************
180 * CLASS_GetMenuName16
182 * Get the menu name as a SEGPTR.
184 inline static SEGPTR CLASS_GetMenuName16( CLASS *classPtr )
186 if (!HIWORD(classPtr->menuName)) return (SEGPTR)classPtr->menuName;
187 if (!classPtr->segMenuName)
188 classPtr->segMenuName = MapLS( CLASS_GetMenuNameA(classPtr) );
189 return classPtr->segMenuName;
193 /***********************************************************************
196 * Get the menu name as a Unicode string.
198 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
200 return classPtr->menuName;
204 /***********************************************************************
207 * Set the menu name in a class structure by copying the string.
209 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
211 UnMapLS( classPtr->segMenuName );
212 classPtr->segMenuName = 0;
213 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
216 DWORD lenA = strlen(name) + 1;
217 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
218 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
219 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
220 memcpy( classPtr->menuName + lenW, name, lenA );
222 else classPtr->menuName = (LPWSTR)name;
226 /***********************************************************************
229 * Set the menu name in a class structure by copying the string.
231 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
233 UnMapLS( classPtr->segMenuName );
234 classPtr->segMenuName = 0;
235 if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
238 DWORD lenW = strlenW(name) + 1;
239 DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
240 classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
241 memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
242 WideCharToMultiByte( CP_ACP, 0, name, lenW,
243 (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
245 else classPtr->menuName = (LPWSTR)name;
249 /***********************************************************************
252 * Free a class structure.
254 static BOOL CLASS_FreeClass( CLASS *classPtr )
256 TRACE("%p\n", classPtr);
258 /* Check if we can remove this class */
260 if (classPtr->cWindows > 0)
262 SetLastError( ERROR_CLASS_HAS_WINDOWS );
266 /* Remove the class from the linked list */
268 if (classPtr->next) classPtr->next->prev = classPtr->prev;
269 if (classPtr->prev) classPtr->prev->next = classPtr->next;
270 else firstClass = classPtr->next;
272 /* Delete the class */
274 if (classPtr->dce) DCE_FreeDCE( classPtr->dce );
275 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
276 DeleteObject( classPtr->hbrBackground );
277 GlobalDeleteAtom( classPtr->atomName );
278 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
279 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
280 UnMapLS( classPtr->segMenuName );
281 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
282 HeapFree( GetProcessHeap(), 0, classPtr );
287 /***********************************************************************
288 * CLASS_FreeModuleClasses
290 void CLASS_FreeModuleClasses( HMODULE16 hModule )
294 TRACE("0x%08x\n", hModule);
297 for (ptr = firstClass; ptr; ptr = next)
300 if (ptr->hInstance == hModule) CLASS_FreeClass( ptr );
306 /***********************************************************************
307 * CLASS_FindClassByAtom
309 * Return a pointer to the class.
310 * hinstance has been normalized by the caller.
313 * 980805 a local class will be found now if registred with hInst=0
314 * and looed up with a hInst!=0. msmoney does it (jsch)
316 * Local class registered with a USER instance handle are found as if
317 * they were global classes.
319 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
321 CLASS * class, *tclass = 0, *user_class = 0;
322 HINSTANCE16 hUser = GetModuleHandle16("USER");
324 TRACE("0x%08x 0x%08x\n", atom, hinstance);
326 /* First search task-specific classes */
328 for (class = firstClass; (class); class = class->next)
330 if (class->style & CS_GLOBALCLASS) continue;
331 if (class->atomName == atom)
333 if (hinstance==class->hInstance || hinstance==0xffff)
335 TRACE("-- found local %p\n", class);
338 if (class->hInstance == 0) tclass = class;
339 else if(class->hInstance == hUser)
346 /* Then search global classes */
348 for (class = firstClass; (class); class = class->next)
350 if (!(class->style & CS_GLOBALCLASS)) continue;
351 if (class->atomName == atom)
353 TRACE("-- found global %p\n", class);
358 /* Check if there was a local class registered with USER */
361 TRACE("--found local USER class %p\n", user_class);
365 /* Then check if there was a local class with hInst=0*/
368 WARN("-- found local Class registred with hInst=0\n");
372 TRACE("-- not found\n");
377 /***********************************************************************
378 * CLASS_RegisterClass
380 * The real RegisterClass() functionality.
382 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance,
383 DWORD style, INT classExtra, INT winExtra )
387 TRACE("atom=0x%x hinst=0x%x style=0x%lx clExtr=0x%x winExtr=0x%x\n",
388 atom, hInstance, style, classExtra, winExtra );
390 /* Check if a class with this name already exists */
391 classPtr = CLASS_FindClassByAtom( atom, hInstance );
394 /* Class can be created only if it is local and */
395 /* if the class with the same name is global. */
397 if ((style & CS_GLOBALCLASS) || !(classPtr->style & CS_GLOBALCLASS))
399 SetLastError( ERROR_CLASS_ALREADY_EXISTS );
404 /* Fix the extra bytes value */
406 if (classExtra < 0) classExtra = 0;
407 else if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
408 WARN("Class extra bytes %d is > 40\n", classExtra);
409 if (winExtra < 0) winExtra = 0;
410 else if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
411 WARN("Win extra bytes %d is > 40\n", winExtra );
413 /* Create the class */
415 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
416 if (!classPtr) return NULL;
417 classPtr->style = style;
418 classPtr->cbWndExtra = winExtra;
419 classPtr->cbClsExtra = classExtra;
420 classPtr->hInstance = hInstance;
421 classPtr->atomName = atom;
422 classPtr->dce = (style & CS_CLASSDC) ? DCE_AllocDCE( 0, DCE_CLASS_DC ) : NULL;
424 /* Other non-null values must be set by caller */
426 if ((classPtr->next = firstClass)) firstClass->prev = classPtr;
427 firstClass = classPtr;
432 /***********************************************************************
433 * CLASS_UnregisterClass
435 * The real UnregisterClass() functionality.
437 static BOOL CLASS_UnregisterClass( ATOM atom, HINSTANCE hInstance )
444 (classPtr = CLASS_FindClassByAtom( atom, hInstance )) &&
445 (!hInstance || classPtr->hInstance == hInstance))
447 ret = CLASS_FreeClass( classPtr );
449 else SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
456 /***********************************************************************
457 * CLASS_RegisterBuiltinClass
459 * Register a builtin control class.
460 * This allows having both ASCII and Unicode winprocs for the same class.
462 ATOM CLASS_RegisterBuiltinClass( const struct builtin_class_descr *descr )
467 if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
469 if (!(classPtr = CLASS_RegisterClass( atom, 0, descr->style, 0, descr->extra )))
471 GlobalDeleteAtom( atom );
475 classPtr->hCursor = LoadCursorA( 0, descr->cursor );
476 classPtr->hbrBackground = descr->brush;
478 if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)descr->procA,
479 WIN_PROC_32A, WIN_PROC_CLASS );
480 if (descr->procW) WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)descr->procW,
481 WIN_PROC_32W, WIN_PROC_CLASS );
486 /***********************************************************************
489 * Add a new window using this class, and return the necessary
490 * information for creating the window.
492 CLASS *CLASS_AddWindow( ATOM atom, HINSTANCE inst, WINDOWPROCTYPE type,
493 INT *winExtra, WNDPROC *winproc, DWORD *style, struct tagDCE **dce )
496 if (type == WIN_PROC_16) inst = GetExePtr(inst);
498 if (!(class = CLASS_FindClassByAtom( atom, inst ))) return NULL;
501 if (type == WIN_PROC_32W)
503 if (!(*winproc = class->winprocW)) *winproc = class->winprocA;
507 if (!(*winproc = class->winprocA)) *winproc = class->winprocW;
509 *winExtra = class->cbWndExtra;
510 *style = class->style;
516 /***********************************************************************
519 * Remove a window from the class window count.
521 void CLASS_RemoveWindow( CLASS *cls )
523 if (cls && cls->cWindows) cls->cWindows--;
527 /***********************************************************************
528 * RegisterClass (USER.57)
530 ATOM WINAPI RegisterClass16( const WNDCLASS16 *wc )
534 int iSmIconWidth, iSmIconHeight;
535 HINSTANCE16 hInstance=GetExePtr(wc->hInstance);
537 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
538 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
539 wc->cbClsExtra, wc->cbWndExtra )))
541 GlobalDeleteAtom( atom );
545 TRACE("atom=%04x wndproc=%08lx hinst=%04x "
546 "bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
547 atom, (DWORD)wc->lpfnWndProc, hInstance,
548 wc->hbrBackground, wc->style, wc->cbClsExtra,
549 wc->cbWndExtra, classPtr,
550 HIWORD(wc->lpszClassName) ?
551 (char *)MapSL(wc->lpszClassName) : "" );
553 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
554 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
556 classPtr->hIcon = wc->hIcon;
557 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
558 iSmIconWidth, iSmIconHeight,
559 LR_COPYFROMRESOURCE);
560 classPtr->hCursor = wc->hCursor;
561 classPtr->hbrBackground = wc->hbrBackground;
563 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
564 WIN_PROC_16, WIN_PROC_CLASS );
565 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
571 /***********************************************************************
572 * RegisterClassA (USER32.@)
574 * >0: Unique identifier
577 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
580 int iSmIconWidth, iSmIconHeight;
583 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
585 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
586 wc->cbClsExtra, wc->cbWndExtra )))
588 GlobalDeleteAtom( atom );
592 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
593 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
594 wc->hbrBackground, wc->style, wc->cbClsExtra,
595 wc->cbWndExtra, classPtr,
596 HIWORD(wc->lpszClassName) ? wc->lpszClassName : "" );
598 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
599 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
601 classPtr->hIcon = wc->hIcon;
602 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
603 iSmIconWidth, iSmIconHeight,
604 LR_COPYFROMRESOURCE);
605 classPtr->hCursor = (HCURSOR16)wc->hCursor;
606 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
608 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
609 WIN_PROC_32A, WIN_PROC_CLASS );
610 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
615 /***********************************************************************
616 * RegisterClassW (USER32.@)
618 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
621 int iSmIconWidth, iSmIconHeight;
624 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
626 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
627 wc->cbClsExtra, wc->cbWndExtra )))
629 GlobalDeleteAtom( atom );
633 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
634 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
635 wc->hbrBackground, wc->style, wc->cbClsExtra,
636 wc->cbWndExtra, classPtr );
638 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
639 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
641 classPtr->hIcon = wc->hIcon;
642 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
643 iSmIconWidth, iSmIconHeight,
644 LR_COPYFROMRESOURCE);
645 classPtr->hCursor = (HCURSOR16)wc->hCursor;
646 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
648 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
649 WIN_PROC_32W, WIN_PROC_CLASS );
650 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
655 /***********************************************************************
656 * RegisterClassEx (USER.397)
658 ATOM WINAPI RegisterClassEx16( const WNDCLASSEX16 *wc )
662 HINSTANCE16 hInstance = GetExePtr( wc->hInstance );
664 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
665 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
666 wc->cbClsExtra, wc->cbWndExtra )))
668 GlobalDeleteAtom( atom );
672 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
673 atom, (DWORD)wc->lpfnWndProc, hInstance,
674 wc->hbrBackground, wc->style, wc->cbClsExtra,
675 wc->cbWndExtra, classPtr );
677 classPtr->hIcon = wc->hIcon;
678 classPtr->hIconSm = wc->hIconSm;
679 classPtr->hCursor = wc->hCursor;
680 classPtr->hbrBackground = wc->hbrBackground;
682 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
683 WIN_PROC_16, WIN_PROC_CLASS );
684 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
689 /***********************************************************************
690 * RegisterClassExA (USER32.@)
692 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
697 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
699 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
700 wc->cbClsExtra, wc->cbWndExtra )))
702 GlobalDeleteAtom( atom );
706 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
707 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
708 wc->hbrBackground, wc->style, wc->cbClsExtra,
709 wc->cbWndExtra, classPtr );
711 classPtr->hIcon = (HICON16)wc->hIcon;
712 classPtr->hIconSm = (HICON16)wc->hIconSm;
713 classPtr->hCursor = (HCURSOR16)wc->hCursor;
714 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
715 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
716 WIN_PROC_32A, WIN_PROC_CLASS );
717 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
722 /***********************************************************************
723 * RegisterClassExW (USER32.@)
725 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
730 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
732 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
733 wc->cbClsExtra, wc->cbWndExtra )))
735 GlobalDeleteAtom( atom );
739 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
740 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
741 wc->hbrBackground, wc->style, wc->cbClsExtra,
742 wc->cbWndExtra, classPtr );
744 classPtr->hIcon = (HICON16)wc->hIcon;
745 classPtr->hIconSm = (HICON16)wc->hIconSm;
746 classPtr->hCursor = (HCURSOR16)wc->hCursor;
747 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
748 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
749 WIN_PROC_32W, WIN_PROC_CLASS );
750 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
755 /***********************************************************************
756 * UnregisterClass (USER.403)
758 BOOL16 WINAPI UnregisterClass16( LPCSTR className, HINSTANCE16 hInstance )
760 return UnregisterClassA( className, GetExePtr( hInstance ) );
763 /***********************************************************************
764 * UnregisterClassA (USER32.@)
767 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
769 TRACE("%s %x\n",debugres_a(className), hInstance);
770 return CLASS_UnregisterClass( GlobalFindAtomA( className ), hInstance );
773 /***********************************************************************
774 * UnregisterClassW (USER32.@)
776 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
778 TRACE("%s %x\n",debugres_w(className), hInstance);
779 return CLASS_UnregisterClass( GlobalFindAtomW( className ), hInstance );
783 /***********************************************************************
784 * GetClassWord (USER32.@)
786 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
791 if (offset < 0) return GetClassLongA( hwnd, offset );
793 TRACE("%x %x\n",hwnd, offset);
795 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
797 if (offset <= class->cbClsExtra - sizeof(WORD))
798 retvalue = GET_WORD((char *)(class + 1) + offset);
800 SetLastError( ERROR_INVALID_INDEX );
801 release_class_ptr( class );
806 /***********************************************************************
807 * GetClassLong (USER.131)
809 LONG WINAPI GetClassLong16( HWND16 hwnd16, INT16 offset )
813 HWND hwnd = (HWND)(ULONG_PTR)hwnd16; /* no need for full handle */
815 TRACE("%x %d\n",hwnd, offset);
820 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
821 ret = (LONG)CLASS_GetProc( class, WIN_PROC_16 );
822 release_class_ptr( class );
825 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
826 ret = (LONG)CLASS_GetMenuName16( class );
827 release_class_ptr( class );
830 return GetClassLongA( hwnd, offset );
835 /***********************************************************************
836 * GetClassLongA (USER32.@)
838 LONG WINAPI GetClassLongA( HWND hwnd, INT offset )
843 TRACE("%x %d\n", hwnd, offset);
845 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
849 if (offset <= class->cbClsExtra - sizeof(LONG))
850 retvalue = GET_DWORD((char *)(class + 1) + offset);
852 SetLastError( ERROR_INVALID_INDEX );
853 release_class_ptr( class );
859 case GCL_HBRBACKGROUND:
860 retvalue = (LONG)class->hbrBackground;
863 retvalue = (LONG)class->hCursor;
866 retvalue = (LONG)class->hIcon;
869 retvalue = (LONG)class->hIconSm;
872 retvalue = (LONG)class->style;
875 retvalue = (LONG)class->cbWndExtra;
878 retvalue = (LONG)class->cbClsExtra;
881 retvalue = (LONG)class->hInstance;
884 retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32A );
887 retvalue = (LONG)CLASS_GetMenuNameA( class );
890 retvalue = (DWORD)class->atomName;
893 SetLastError( ERROR_INVALID_INDEX );
896 release_class_ptr( class );
901 /***********************************************************************
902 * GetClassLongW (USER32.@)
904 LONG WINAPI GetClassLongW( HWND hwnd, INT offset )
909 if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
910 return GetClassLongA( hwnd, offset );
912 TRACE("%x %d\n", hwnd, offset);
914 if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
916 if (offset == GCL_WNDPROC)
917 retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32W );
918 else /* GCL_MENUNAME */
919 retvalue = (LONG)CLASS_GetMenuNameW( class );
921 release_class_ptr( class );
926 /***********************************************************************
927 * SetClassWord (USER32.@)
929 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
934 if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
936 TRACE("%x %d %x\n", hwnd, offset, newval);
938 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
940 if (offset <= class->cbClsExtra - sizeof(WORD))
942 void *ptr = (char *)(class + 1) + offset;
943 retval = GET_WORD(ptr);
944 PUT_WORD( ptr, newval );
946 else SetLastError( ERROR_INVALID_INDEX );
948 release_class_ptr( class );
953 /***********************************************************************
954 * SetClassLong (USER.132)
956 LONG WINAPI SetClassLong16( HWND16 hwnd16, INT16 offset, LONG newval )
960 HWND hwnd = (HWND)(ULONG_PTR)hwnd16; /* no need for full handle */
962 TRACE("%x %d %lx\n", hwnd, offset, newval);
967 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
968 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_16 );
969 release_class_ptr( class );
972 newval = (LONG)MapSL( newval );
975 return SetClassLongA( hwnd, offset, newval );
980 /***********************************************************************
981 * SetClassLongA (USER32.@)
983 LONG WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
988 TRACE("%x %d %lx\n", hwnd, offset, newval);
990 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
994 if (offset <= class->cbClsExtra - sizeof(LONG))
996 void *ptr = (char *)(class + 1) + offset;
997 retval = GET_DWORD(ptr);
998 PUT_DWORD( ptr, newval );
1000 else SetLastError( ERROR_INVALID_INDEX );
1005 CLASS_SetMenuNameA( class, (LPCSTR)newval );
1006 retval = 0; /* Old value is now meaningless anyway */
1009 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32A );
1011 case GCL_HBRBACKGROUND:
1012 retval = (LONG)class->hbrBackground;
1013 class->hbrBackground = newval;
1016 retval = (LONG)class->hCursor;
1017 class->hCursor = newval;
1020 retval = (LONG)class->hIcon;
1021 class->hIcon = newval;
1024 retval = (LONG)class->hIconSm;
1025 class->hIconSm = newval;
1028 retval = (LONG)class->style;
1029 class->style = newval;
1031 case GCL_CBWNDEXTRA:
1032 retval = (LONG)class->cbWndExtra;
1033 class->cbWndExtra = newval;
1036 retval = (LONG)class->hInstance;
1037 class->hInstance = newval;
1040 retval = (DWORD)class->atomName;
1041 class->atomName = newval;
1043 case GCL_CBCLSEXTRA: /* cannot change this one */
1044 SetLastError( ERROR_INVALID_PARAMETER );
1047 SetLastError( ERROR_INVALID_INDEX );
1050 release_class_ptr( class );
1055 /***********************************************************************
1056 * SetClassLongW (USER32.@)
1058 LONG WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
1063 if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
1064 return SetClassLongA( hwnd, offset, newval );
1066 TRACE("%x %d %lx\n", hwnd, offset, newval);
1068 if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
1070 if (offset == GCL_WNDPROC)
1071 retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32W );
1072 else /* GCL_MENUNAME */
1074 CLASS_SetMenuNameW( class, (LPCWSTR)newval );
1075 retval = 0; /* Old value is now meaningless anyway */
1077 release_class_ptr( class );
1082 /***********************************************************************
1083 * GetClassNameA (USER32.@)
1085 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
1087 INT ret = GlobalGetAtomNameA( GetClassLongA( hwnd, GCW_ATOM ), buffer, count );
1089 TRACE("%x %s %x\n",hwnd, debugstr_a(buffer), count);
1094 /***********************************************************************
1095 * GetClassNameW (USER32.@)
1097 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1099 INT ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), buffer, count );
1101 TRACE("%x %s %x\n",hwnd, debugstr_w(buffer), count);
1106 /***********************************************************************
1107 * GetClassInfo (USER.404)
1109 BOOL16 WINAPI GetClassInfo16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASS16 *wc )
1114 TRACE("%x %s %p\n",hInstance, debugres_a(MapSL(name)), wc);
1116 hInstance = GetExePtr( hInstance );
1117 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1118 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1120 if ((hInstance != classPtr->hInstance) &&
1121 !(classPtr->style & CS_GLOBALCLASS)) /*BWCC likes to pass hInstance=0*/
1123 wc->style = (UINT16)classPtr->style;
1124 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1125 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1126 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1127 wc->hInstance = classPtr->style & CS_GLOBALCLASS ? GetModuleHandle16("USER") : (HINSTANCE16)classPtr->hInstance;
1128 wc->hIcon = classPtr->hIcon;
1129 wc->hCursor = classPtr->hCursor;
1130 wc->hbrBackground = classPtr->hbrBackground;
1131 wc->lpszClassName = name;
1132 wc->lpszMenuName = CLASS_GetMenuName16( classPtr );
1137 /***********************************************************************
1138 * GetClassInfoA (USER32.@)
1140 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name,
1146 TRACE("%x %p %p\n",hInstance, name, wc);
1148 /* workaround: if hInstance=NULL you expect to get the system classes
1149 but this classes (as example from comctl32.dll SysListView) won't be
1150 registered with hInstance=NULL in WINE because of the late loading
1151 of this dll. fixes file dialogs in WinWord95 (jsch)*/
1153 if (!(atom=GlobalFindAtomA(name)) || !(classPtr=CLASS_FindClassByAtom(atom,hInstance)))
1156 if (!(classPtr->style & CS_GLOBALCLASS) &&
1157 classPtr->hInstance &&
1158 (hInstance != classPtr->hInstance))
1160 if (hInstance) return FALSE;
1161 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",name);
1164 wc->style = classPtr->style;
1165 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1166 wc->cbClsExtra = classPtr->cbClsExtra;
1167 wc->cbWndExtra = classPtr->cbWndExtra;
1168 wc->hInstance = hInstance;
1169 wc->hIcon = (HICON)classPtr->hIcon;
1170 wc->hCursor = (HCURSOR)classPtr->hCursor;
1171 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1172 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1173 wc->lpszClassName = name;
1178 /***********************************************************************
1179 * GetClassInfoW (USER32.@)
1181 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name,
1187 TRACE("%x %p %p\n",hInstance, name, wc);
1189 if ( !(atom=GlobalFindAtomW(name)) ||
1190 !(classPtr=CLASS_FindClassByAtom(atom,hInstance))
1194 if (!(classPtr->style & CS_GLOBALCLASS) &&
1195 classPtr->hInstance &&
1196 (hInstance != classPtr->hInstance))
1198 if (hInstance) return FALSE;
1199 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",debugstr_w(name));
1201 wc->style = classPtr->style;
1202 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1203 wc->cbClsExtra = classPtr->cbClsExtra;
1204 wc->cbWndExtra = classPtr->cbWndExtra;
1205 wc->hInstance = hInstance;
1206 wc->hIcon = (HICON)classPtr->hIcon;
1207 wc->hCursor = (HCURSOR)classPtr->hCursor;
1208 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1209 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1210 wc->lpszClassName = name;
1215 /***********************************************************************
1216 * GetClassInfoEx (USER.398)
1218 * FIXME: this is just a guess, I have no idea if GetClassInfoEx() is the
1219 * same in Win16 as in Win32. --AJ
1221 BOOL16 WINAPI GetClassInfoEx16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASSEX16 *wc )
1226 TRACE("%x %s %p\n",hInstance,debugres_a( MapSL(name) ), wc);
1228 hInstance = GetExePtr( hInstance );
1229 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1230 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1231 (hInstance != classPtr->hInstance)) return FALSE;
1232 wc->style = classPtr->style;
1233 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1234 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1235 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1236 wc->hInstance = (HINSTANCE16)classPtr->hInstance;
1237 wc->hIcon = classPtr->hIcon;
1238 wc->hIconSm = classPtr->hIconSm;
1239 wc->hCursor = classPtr->hCursor;
1240 wc->hbrBackground = classPtr->hbrBackground;
1241 wc->lpszClassName = (SEGPTR)0;
1242 wc->lpszMenuName = CLASS_GetMenuName16( classPtr );
1243 wc->lpszClassName = name;
1245 /* We must return the atom of the class here instead of just TRUE. */
1250 /***********************************************************************
1251 * GetClassInfoExA (USER32.@)
1253 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name,
1259 TRACE("%x %p %p\n",hInstance, name, wc);
1261 if (!(atom = GlobalFindAtomA( name )) ||
1262 !(classPtr = CLASS_FindClassByAtom( atom, hInstance ))
1263 /*|| (hInstance != classPtr->hInstance) */ ) return FALSE;
1264 wc->style = classPtr->style;
1265 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1266 wc->cbClsExtra = classPtr->cbClsExtra;
1267 wc->cbWndExtra = classPtr->cbWndExtra;
1268 wc->hInstance = classPtr->hInstance;
1269 wc->hIcon = (HICON)classPtr->hIcon;
1270 wc->hIconSm = (HICON)classPtr->hIconSm;
1271 wc->hCursor = (HCURSOR)classPtr->hCursor;
1272 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1273 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1274 wc->lpszClassName = name;
1276 /* We must return the atom of the class here instead of just TRUE. */
1281 /***********************************************************************
1282 * GetClassInfoExW (USER32.@)
1284 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name,
1290 TRACE("%x %p %p\n",hInstance, name, wc);
1292 if (!(atom = GlobalFindAtomW( name )) ||
1293 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1294 (hInstance != classPtr->hInstance)) return FALSE;
1295 wc->style = classPtr->style;
1296 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1297 wc->cbClsExtra = classPtr->cbClsExtra;
1298 wc->cbWndExtra = classPtr->cbWndExtra;
1299 wc->hInstance = classPtr->hInstance;
1300 wc->hIcon = (HICON)classPtr->hIcon;
1301 wc->hIconSm = (HICON)classPtr->hIconSm;
1302 wc->hCursor = (HCURSOR)classPtr->hCursor;
1303 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1304 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1305 wc->lpszClassName = name;
1307 /* We must return the atom of the class here instead of just TRUE. */
1312 #if 0 /* toolhelp is in kernel, so this cannot work */
1314 /***********************************************************************
1315 * ClassFirst (TOOLHELP.69)
1317 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1319 TRACE("%p\n",pClassEntry);
1320 pClassEntry->wNext = 1;
1321 return ClassNext16( pClassEntry );
1325 /***********************************************************************
1326 * ClassNext (TOOLHELP.70)
1328 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1331 CLASS *class = firstClass;
1333 TRACE("%p\n",pClassEntry);
1335 if (!pClassEntry->wNext) return FALSE;
1336 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1339 pClassEntry->wNext = 0;
1342 pClassEntry->hInst = class->hInstance;
1343 pClassEntry->wNext++;
1344 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1345 sizeof(pClassEntry->szClassName) );