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.
17 #include "wine/winbase16.h"
21 #include "wine/winuser16.h"
22 #include "wine/unicode.h"
23 #include "wine/port.h"
29 #include "debugtools.h"
31 DEFAULT_DEBUG_CHANNEL(class);
33 typedef struct tagCLASS
35 struct tagCLASS *next; /* Next class */
36 struct tagCLASS *prev; /* Prev class */
37 UINT cWindows; /* Count of existing windows */
38 UINT style; /* Class style */
39 HWINDOWPROC winprocA; /* Window procedure (ASCII) */
40 HWINDOWPROC winprocW; /* Window procedure (Unicode) */
41 INT cbClsExtra; /* Class extra bytes */
42 INT cbWndExtra; /* Window extra bytes */
43 LPWSTR menuName; /* Default menu name (Unicode followed by ASCII) */
44 struct tagDCE *dce; /* Class DCE (if CS_CLASSDC) */
45 HINSTANCE hInstance; /* Module that created the task */
46 HICON hIcon; /* Default icon */
47 HICON hIconSm; /* Default small icon */
48 HCURSOR hCursor; /* Default cursor */
49 HBRUSH hbrBackground; /* Default background */
50 ATOM atomName; /* Name of the class */
53 static CLASS *firstClass;
56 /***********************************************************************
59 * Get the class winproc for a given proc type
61 static WNDPROC16 CLASS_GetProc( CLASS *classPtr, WINDOWPROCTYPE type )
63 HWINDOWPROC proc = classPtr->winprocA;
65 if (classPtr->winprocW)
67 /* if we have a Unicode proc, use it if we have no ASCII proc
68 * or if we have both and Unicode was requested
70 if (!proc || type == WIN_PROC_32W) proc = classPtr->winprocW;
72 return WINPROC_GetProc( proc, type );
76 /***********************************************************************
79 * Set the class winproc for a given proc type.
80 * Returns the previous window proc.
82 static WNDPROC16 CLASS_SetProc( CLASS *classPtr, WNDPROC newproc, WINDOWPROCTYPE type )
84 HWINDOWPROC *proc = &classPtr->winprocA;
87 if (classPtr->winprocW)
89 /* if we have a Unicode proc, use it if we have no ASCII proc
90 * or if we have both and Unicode was requested
92 if (!*proc || type == WIN_PROC_32W) proc = &classPtr->winprocW;
94 ret = WINPROC_GetProc( *proc, type );
95 WINPROC_SetProc( proc, (HWINDOWPROC)newproc, type, WIN_PROC_CLASS );
96 /* now free the one that we didn't set */
97 if (classPtr->winprocA && classPtr->winprocW)
99 if (proc == &classPtr->winprocA)
101 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
102 classPtr->winprocW = 0;
106 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
107 classPtr->winprocA = 0;
114 /***********************************************************************
117 * Get the menu name as a ASCII string.
119 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
121 if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
122 return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
126 /***********************************************************************
129 * Get the menu name as a Unicode string.
131 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
133 return classPtr->menuName;
137 /***********************************************************************
140 * Set the menu name in a class structure by copying the string.
142 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
144 if (HIWORD(classPtr->menuName)) SEGPTR_FREE( classPtr->menuName );
147 DWORD lenA = strlen(name) + 1;
148 DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
149 classPtr->menuName = SEGPTR_ALLOC( lenA + lenW*sizeof(WCHAR) );
150 MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
151 memcpy( classPtr->menuName + lenW, name, lenA );
153 else classPtr->menuName = (LPWSTR)name;
157 /***********************************************************************
160 * Set the menu name in a class structure by copying the string.
162 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
164 if (HIWORD(classPtr->menuName)) SEGPTR_FREE( classPtr->menuName );
167 DWORD lenW = strlenW(name) + 1;
168 DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
169 classPtr->menuName = SEGPTR_ALLOC( lenA + lenW*sizeof(WCHAR) );
170 memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
171 WideCharToMultiByte( CP_ACP, 0, name, lenW,
172 (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
174 else classPtr->menuName = (LPWSTR)name;
178 /***********************************************************************
181 * Free a class structure.
183 static BOOL CLASS_FreeClass( CLASS *classPtr )
185 TRACE("%p\n", classPtr);
187 /* Check if we can remove this class */
189 if (classPtr->cWindows > 0)
191 SetLastError( ERROR_CLASS_HAS_WINDOWS );
195 /* Remove the class from the linked list */
197 if (classPtr->next) classPtr->next->prev = classPtr->prev;
198 if (classPtr->prev) classPtr->prev->next = classPtr->next;
199 else firstClass = classPtr->next;
201 /* Delete the class */
203 if (classPtr->dce) DCE_FreeDCE( classPtr->dce );
204 if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
205 DeleteObject( classPtr->hbrBackground );
206 GlobalDeleteAtom( classPtr->atomName );
207 WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
208 WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
209 HeapFree( GetProcessHeap(), 0, classPtr->menuName );
210 HeapFree( GetProcessHeap(), 0, classPtr );
215 /***********************************************************************
216 * CLASS_FreeModuleClasses
218 void CLASS_FreeModuleClasses( HMODULE16 hModule )
222 TRACE("0x%08x\n", hModule);
224 for (ptr = firstClass; ptr; ptr = next)
227 if (ptr->hInstance == hModule) CLASS_FreeClass( ptr );
232 /***********************************************************************
233 * CLASS_FindClassByAtom
235 * Return a pointer to the class.
236 * hinstance has been normalized by the caller.
239 * 980805 a local class will be found now if registred with hInst=0
240 * and looed up with a hInst!=0. msmoney does it (jsch)
242 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
244 CLASS * class, *tclass=0;
246 TRACE("0x%08x 0x%08x\n", atom, hinstance);
248 /* First search task-specific classes */
250 for (class = firstClass; (class); class = class->next)
252 if (class->style & CS_GLOBALCLASS) continue;
253 if (class->atomName == atom)
255 if (hinstance==class->hInstance || hinstance==0xffff )
257 TRACE("-- found local %p\n", class);
260 if (class->hInstance==0) tclass = class;
264 /* Then search global classes */
266 for (class = firstClass; (class); class = class->next)
268 if (!(class->style & CS_GLOBALCLASS)) continue;
269 if (class->atomName == atom)
271 TRACE("-- found global %p\n", class);
276 /* Then check if there was a local class with hInst=0*/
279 WARN("-- found local Class registred with hInst=0\n");
283 TRACE("-- not found\n");
288 /***********************************************************************
289 * CLASS_RegisterClass
291 * The real RegisterClass() functionality.
293 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance,
294 DWORD style, INT classExtra, INT winExtra )
298 TRACE("atom=0x%x hinst=0x%x style=0x%lx clExtr=0x%x winExtr=0x%x\n",
299 atom, hInstance, style, classExtra, winExtra );
301 /* Check if a class with this name already exists */
302 classPtr = CLASS_FindClassByAtom( atom, hInstance );
305 /* Class can be created only if it is local and */
306 /* if the class with the same name is global. */
308 if ((style & CS_GLOBALCLASS) || !(classPtr->style & CS_GLOBALCLASS))
310 SetLastError( ERROR_CLASS_ALREADY_EXISTS );
315 /* Fix the extra bytes value */
317 if (classExtra < 0) classExtra = 0;
318 else if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
319 WARN("Class extra bytes %d is > 40\n", classExtra);
320 if (winExtra < 0) winExtra = 0;
321 else if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
322 WARN("Win extra bytes %d is > 40\n", winExtra );
324 /* Create the class */
326 classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
327 if (!classPtr) return NULL;
328 classPtr->style = style;
329 classPtr->cbWndExtra = winExtra;
330 classPtr->cbClsExtra = classExtra;
331 classPtr->hInstance = hInstance;
332 classPtr->atomName = atom;
333 classPtr->dce = (style & CS_CLASSDC) ? DCE_AllocDCE( 0, DCE_CLASS_DC ) : NULL;
335 /* Other non-null values must be set by caller */
337 if ((classPtr->next = firstClass)) firstClass->prev = classPtr;
338 firstClass = classPtr;
343 /***********************************************************************
344 * CLASS_RegisterBuiltinClass
346 * Register a builtin control class.
347 * This allows having both ASCII and Unicode winprocs for the same class.
349 ATOM CLASS_RegisterBuiltinClass( const struct builtin_class_descr *descr )
354 if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
356 if (!(classPtr = CLASS_RegisterClass( atom, 0, descr->style, 0, descr->extra )))
358 GlobalDeleteAtom( atom );
362 classPtr->hCursor = LoadCursorA( 0, descr->cursor );
363 classPtr->hbrBackground = descr->brush;
365 if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)descr->procA,
366 WIN_PROC_32A, WIN_PROC_CLASS );
367 if (descr->procW) WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)descr->procW,
368 WIN_PROC_32W, WIN_PROC_CLASS );
373 /***********************************************************************
376 * Add a new window using this class, and return the necessary
377 * information for creating the window.
379 CLASS *CLASS_AddWindow( ATOM atom, HINSTANCE inst, WINDOWPROCTYPE type,
380 INT *winExtra, WNDPROC *winproc, DWORD *style, struct tagDCE **dce )
383 if (type == WIN_PROC_16) inst = GetExePtr(inst);
385 if (!(class = CLASS_FindClassByAtom( atom, inst ))) return NULL;
388 if (type == WIN_PROC_32W)
390 if (!(*winproc = class->winprocW)) *winproc = class->winprocA;
394 if (!(*winproc = class->winprocA)) *winproc = class->winprocW;
396 *winExtra = class->cbWndExtra;
397 *style = class->style;
403 /***********************************************************************
406 * Remove a window from the class window count.
408 void CLASS_RemoveWindow( CLASS *cls )
410 if (cls && cls->cWindows) cls->cWindows--;
414 /***********************************************************************
415 * RegisterClass (USER.57)
417 ATOM WINAPI RegisterClass16( const WNDCLASS16 *wc )
421 int iSmIconWidth, iSmIconHeight;
422 HINSTANCE16 hInstance=GetExePtr(wc->hInstance);
424 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
425 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
426 wc->cbClsExtra, wc->cbWndExtra )))
428 GlobalDeleteAtom( atom );
432 TRACE("atom=%04x wndproc=%08lx hinst=%04x "
433 "bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
434 atom, (DWORD)wc->lpfnWndProc, hInstance,
435 wc->hbrBackground, wc->style, wc->cbClsExtra,
436 wc->cbWndExtra, classPtr,
437 HIWORD(wc->lpszClassName) ?
438 (char *)MapSL(wc->lpszClassName) : "" );
440 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
441 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
443 classPtr->hIcon = wc->hIcon;
444 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
445 iSmIconWidth, iSmIconHeight,
446 LR_COPYFROMRESOURCE);
447 classPtr->hCursor = wc->hCursor;
448 classPtr->hbrBackground = wc->hbrBackground;
450 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
451 WIN_PROC_16, WIN_PROC_CLASS );
452 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
458 /***********************************************************************
459 * RegisterClassA (USER32.@)
461 * >0: Unique identifier
464 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
467 int iSmIconWidth, iSmIconHeight;
470 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
472 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
473 wc->cbClsExtra, wc->cbWndExtra )))
475 GlobalDeleteAtom( atom );
479 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
480 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
481 wc->hbrBackground, wc->style, wc->cbClsExtra,
482 wc->cbWndExtra, classPtr,
483 HIWORD(wc->lpszClassName) ? wc->lpszClassName : "" );
485 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
486 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
488 classPtr->hIcon = wc->hIcon;
489 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
490 iSmIconWidth, iSmIconHeight,
491 LR_COPYFROMRESOURCE);
492 classPtr->hCursor = (HCURSOR16)wc->hCursor;
493 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
495 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
496 WIN_PROC_32A, WIN_PROC_CLASS );
497 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
502 /***********************************************************************
503 * RegisterClassW (USER32.@)
505 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
508 int iSmIconWidth, iSmIconHeight;
511 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
513 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
514 wc->cbClsExtra, wc->cbWndExtra )))
516 GlobalDeleteAtom( atom );
520 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
521 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
522 wc->hbrBackground, wc->style, wc->cbClsExtra,
523 wc->cbWndExtra, classPtr );
525 iSmIconWidth = GetSystemMetrics(SM_CXSMICON);
526 iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
528 classPtr->hIcon = wc->hIcon;
529 classPtr->hIconSm = CopyImage(wc->hIcon, IMAGE_ICON,
530 iSmIconWidth, iSmIconHeight,
531 LR_COPYFROMRESOURCE);
532 classPtr->hCursor = (HCURSOR16)wc->hCursor;
533 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
535 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
536 WIN_PROC_32W, WIN_PROC_CLASS );
537 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
542 /***********************************************************************
543 * RegisterClassEx (USER.397)
545 ATOM WINAPI RegisterClassEx16( const WNDCLASSEX16 *wc )
549 HINSTANCE16 hInstance = GetExePtr( wc->hInstance );
551 if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
552 if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
553 wc->cbClsExtra, wc->cbWndExtra )))
555 GlobalDeleteAtom( atom );
559 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
560 atom, (DWORD)wc->lpfnWndProc, hInstance,
561 wc->hbrBackground, wc->style, wc->cbClsExtra,
562 wc->cbWndExtra, classPtr );
564 classPtr->hIcon = wc->hIcon;
565 classPtr->hIconSm = wc->hIconSm;
566 classPtr->hCursor = wc->hCursor;
567 classPtr->hbrBackground = wc->hbrBackground;
569 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
570 WIN_PROC_16, WIN_PROC_CLASS );
571 CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
576 /***********************************************************************
577 * RegisterClassExA (USER32.@)
579 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
584 if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
586 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
587 wc->cbClsExtra, wc->cbWndExtra )))
589 GlobalDeleteAtom( atom );
593 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
594 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
595 wc->hbrBackground, wc->style, wc->cbClsExtra,
596 wc->cbWndExtra, classPtr );
598 classPtr->hIcon = (HICON16)wc->hIcon;
599 classPtr->hIconSm = (HICON16)wc->hIconSm;
600 classPtr->hCursor = (HCURSOR16)wc->hCursor;
601 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
602 WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
603 WIN_PROC_32A, WIN_PROC_CLASS );
604 CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
609 /***********************************************************************
610 * RegisterClassExW (USER32.@)
612 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
617 if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
619 if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
620 wc->cbClsExtra, wc->cbWndExtra )))
622 GlobalDeleteAtom( atom );
626 TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
627 atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
628 wc->hbrBackground, wc->style, wc->cbClsExtra,
629 wc->cbWndExtra, classPtr );
631 classPtr->hIcon = (HICON16)wc->hIcon;
632 classPtr->hIconSm = (HICON16)wc->hIconSm;
633 classPtr->hCursor = (HCURSOR16)wc->hCursor;
634 classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
635 WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
636 WIN_PROC_32W, WIN_PROC_CLASS );
637 CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
642 /***********************************************************************
643 * UnregisterClass (USER.403)
645 BOOL16 WINAPI UnregisterClass16( LPCSTR className, HINSTANCE16 hInstance )
647 return UnregisterClassA( className, GetExePtr( hInstance ) );
651 /***********************************************************************
652 * UnregisterClassA (USER32.@)
655 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
660 TRACE("%s %x\n",debugres_a(className), hInstance);
662 if (!(atom = GlobalFindAtomA( className )))
664 SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
667 if (!(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
668 (classPtr->hInstance != hInstance))
670 SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
673 return CLASS_FreeClass( classPtr );
676 /***********************************************************************
677 * UnregisterClassW (USER32.@)
679 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
684 TRACE("%s %x\n",debugres_w(className), hInstance);
686 if (!(atom = GlobalFindAtomW( className )))
688 SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
691 if (!(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
692 (classPtr->hInstance != hInstance))
694 SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
697 return CLASS_FreeClass( classPtr );
701 /***********************************************************************
702 * GetClassWord (USER32.@)
704 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
709 TRACE("%x %x\n",hwnd, offset);
711 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
714 if (offset <= wndPtr->class->cbClsExtra - sizeof(WORD))
716 retvalue = GET_WORD((char *)(wndPtr->class + 1) + offset);
723 retvalue = wndPtr->class->atomName;
725 case GCL_HBRBACKGROUND:
733 retvalue = (WORD)GetClassLongA( hwnd, offset );
737 WARN("Invalid offset %d\n", offset);
739 WIN_ReleaseWndPtr(wndPtr);
744 /***********************************************************************
745 * GetClassLong (USER.131)
747 LONG WINAPI GetClassLong16( HWND16 hwnd, INT16 offset )
752 TRACE("%x %x\n",hwnd, offset);
757 if (!(wndPtr = WIN_FindWndPtr16( hwnd ))) return 0;
758 ret = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_16 );
759 WIN_ReleaseWndPtr(wndPtr);
762 ret = GetClassLongA( WIN_Handle32(hwnd), offset );
763 return (LONG)SEGPTR_GET( (void *)ret );
765 return GetClassLongA( WIN_Handle32(hwnd), offset );
770 /***********************************************************************
771 * GetClassLongA (USER32.@)
773 LONG WINAPI GetClassLongA( HWND hwnd, INT offset )
778 TRACE("%x %x\n",hwnd, offset);
780 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
783 if (offset <= wndPtr->class->cbClsExtra - sizeof(LONG))
785 retvalue = GET_DWORD((char *)(wndPtr->class + 1) + offset);
792 case GCL_HBRBACKGROUND:
793 retvalue = (LONG)wndPtr->class->hbrBackground;
796 retvalue = (LONG)wndPtr->class->hCursor;
799 retvalue = (LONG)wndPtr->class->hIcon;
802 retvalue = (LONG)wndPtr->class->hIconSm;
805 retvalue = (LONG)wndPtr->class->style;
808 retvalue = (LONG)wndPtr->class->cbWndExtra;
811 retvalue = (LONG)wndPtr->class->cbClsExtra;
814 retvalue = (LONG)wndPtr->class->hInstance;
817 retvalue = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_32A );
820 retvalue = (LONG)CLASS_GetMenuNameA( wndPtr->class );
823 retvalue = GetClassWord( hwnd, offset );
826 WARN("Invalid offset %d\n", offset);
829 WIN_ReleaseWndPtr(wndPtr);
834 /***********************************************************************
835 * GetClassLongW (USER32.@)
837 LONG WINAPI GetClassLongW( HWND hwnd, INT offset )
842 TRACE("%x %x\n",hwnd, offset);
847 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
848 retvalue = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_32W );
849 WIN_ReleaseWndPtr(wndPtr);
852 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
853 retvalue = (LONG)CLASS_GetMenuNameW( wndPtr->class );
854 WIN_ReleaseWndPtr(wndPtr);
857 return GetClassLongA( hwnd, offset );
862 /***********************************************************************
863 * SetClassWord (USER32.@)
865 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
871 TRACE("%x %x %x\n",hwnd, offset, newval);
873 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
876 if (offset + sizeof(WORD) <= wndPtr->class->cbClsExtra)
877 ptr = (char *)(wndPtr->class + 1) + offset;
880 WARN("Invalid offset %d\n", offset );
881 WIN_ReleaseWndPtr(wndPtr);
887 case GCL_HBRBACKGROUND:
895 WIN_ReleaseWndPtr(wndPtr);
896 return (WORD)SetClassLongA( hwnd, offset, (LONG)newval );
898 ptr = &wndPtr->class->atomName;
901 WARN("Invalid offset %d\n", offset);
902 WIN_ReleaseWndPtr(wndPtr);
905 retval = GET_WORD(ptr);
906 PUT_WORD( ptr, newval );
907 WIN_ReleaseWndPtr(wndPtr);
912 /***********************************************************************
913 * SetClassLong (USER.132)
915 LONG WINAPI SetClassLong16( HWND16 hwnd, INT16 offset, LONG newval )
920 TRACE("%x %x %lx\n",hwnd, offset, newval);
925 if (!(wndPtr = WIN_FindWndPtr16(hwnd))) return 0;
926 retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_16 );
927 WIN_ReleaseWndPtr(wndPtr);
930 newval = (LONG)MapSL( newval );
933 return SetClassLongA( WIN_Handle32(hwnd), offset, newval );
938 /***********************************************************************
939 * SetClassLongA (USER32.@)
941 LONG WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
947 TRACE("%x %x %lx\n",hwnd, offset, newval);
949 if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
952 if (offset + sizeof(LONG) <= wndPtr->class->cbClsExtra)
953 ptr = (char *)(wndPtr->class + 1) + offset;
956 WARN("Invalid offset %d\n", offset );
964 CLASS_SetMenuNameA( wndPtr->class, (LPCSTR)newval );
965 retval = 0; /* Old value is now meaningless anyway */
968 retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_32A );
970 case GCL_HBRBACKGROUND:
971 ptr = &wndPtr->class->hbrBackground;
974 ptr = &wndPtr->class->hCursor;
977 ptr = &wndPtr->class->hIcon;
980 ptr = &wndPtr->class->hIconSm;
983 ptr = &wndPtr->class->style;
986 ptr = &wndPtr->class->cbWndExtra;
989 ptr = &wndPtr->class->cbClsExtra;
992 ptr = &wndPtr->class->hInstance;
995 WIN_ReleaseWndPtr(wndPtr);
996 return SetClassWord( hwnd, offset, newval );
998 WARN("Invalid offset %d\n", offset );
1002 retval = GET_DWORD(ptr);
1003 PUT_DWORD( ptr, newval );
1005 WIN_ReleaseWndPtr(wndPtr);
1010 /***********************************************************************
1011 * SetClassLongW (USER32.@)
1013 LONG WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
1018 TRACE("%x %x %lx\n",hwnd, offset, newval);
1023 if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1024 retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_32W );
1025 WIN_ReleaseWndPtr(wndPtr);
1028 if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1029 CLASS_SetMenuNameW( wndPtr->class, (LPCWSTR)newval );
1030 WIN_ReleaseWndPtr(wndPtr);
1031 return 0; /* Old value is now meaningless anyway */
1033 return SetClassLongA( hwnd, offset, newval );
1038 /***********************************************************************
1039 * GetClassNameA (USER32.@)
1041 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
1045 if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1046 ret = GlobalGetAtomNameA( wndPtr->class->atomName, buffer, count );
1048 WIN_ReleaseWndPtr(wndPtr);
1049 TRACE("%x %s %x\n",hwnd, buffer, count);
1054 /***********************************************************************
1055 * GetClassNameW (USER32.@)
1057 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1061 if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1062 ret = GlobalGetAtomNameW( wndPtr->class->atomName, buffer, count );
1063 WIN_ReleaseWndPtr(wndPtr);
1064 TRACE("%x %s %x\n",hwnd, debugstr_w(buffer), count);
1070 /***********************************************************************
1071 * GetClassInfo (USER.404)
1073 BOOL16 WINAPI GetClassInfo16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASS16 *wc )
1078 TRACE("%x %s %p\n",hInstance, debugres_a(MapSL(name)), wc);
1080 hInstance = GetExePtr( hInstance );
1081 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1082 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1084 if ((hInstance != classPtr->hInstance) &&
1085 !(classPtr->style & CS_GLOBALCLASS)) /*BWCC likes to pass hInstance=0*/
1087 wc->style = (UINT16)classPtr->style;
1088 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1089 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1090 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1091 wc->hInstance = (HINSTANCE16)classPtr->hInstance;
1092 wc->hIcon = classPtr->hIcon;
1093 wc->hCursor = classPtr->hCursor;
1094 wc->hbrBackground = classPtr->hbrBackground;
1095 wc->lpszClassName = name;
1096 wc->lpszMenuName = (SEGPTR)CLASS_GetMenuNameA( classPtr );
1097 if (HIWORD(wc->lpszMenuName)) /* Make it a SEGPTR */
1098 wc->lpszMenuName = SEGPTR_GET( (LPSTR)wc->lpszMenuName );
1103 /***********************************************************************
1104 * GetClassInfoA (USER32.@)
1106 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name,
1112 TRACE("%x %p %p\n",hInstance, name, wc);
1114 /* workaround: if hInstance=NULL you expect to get the system classes
1115 but this classes (as example from comctl32.dll SysListView) won't be
1116 registered with hInstance=NULL in WINE because of the late loading
1117 of this dll. fixes file dialogs in WinWord95 (jsch)*/
1119 if (!(atom=GlobalFindAtomA(name)) || !(classPtr=CLASS_FindClassByAtom(atom,hInstance)))
1122 if (!(classPtr->style & CS_GLOBALCLASS) &&
1123 classPtr->hInstance &&
1124 (hInstance != classPtr->hInstance))
1126 if (hInstance) return FALSE;
1127 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",name);
1130 wc->style = classPtr->style;
1131 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1132 wc->cbClsExtra = classPtr->cbClsExtra;
1133 wc->cbWndExtra = classPtr->cbWndExtra;
1134 wc->hInstance = hInstance;
1135 wc->hIcon = (HICON)classPtr->hIcon;
1136 wc->hCursor = (HCURSOR)classPtr->hCursor;
1137 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1138 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1139 wc->lpszClassName = name;
1144 /***********************************************************************
1145 * GetClassInfoW (USER32.@)
1147 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name,
1153 TRACE("%x %p %p\n",hInstance, name, wc);
1155 if ( !(atom=GlobalFindAtomW(name)) ||
1156 !(classPtr=CLASS_FindClassByAtom(atom,hInstance))
1160 if (!(classPtr->style & CS_GLOBALCLASS) &&
1161 classPtr->hInstance &&
1162 (hInstance != classPtr->hInstance))
1164 if (hInstance) return FALSE;
1165 WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",debugstr_w(name));
1167 wc->style = classPtr->style;
1168 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1169 wc->cbClsExtra = classPtr->cbClsExtra;
1170 wc->cbWndExtra = classPtr->cbWndExtra;
1171 wc->hInstance = hInstance;
1172 wc->hIcon = (HICON)classPtr->hIcon;
1173 wc->hCursor = (HCURSOR)classPtr->hCursor;
1174 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1175 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1176 wc->lpszClassName = name;
1181 /***********************************************************************
1182 * GetClassInfoEx (USER.398)
1184 * FIXME: this is just a guess, I have no idea if GetClassInfoEx() is the
1185 * same in Win16 as in Win32. --AJ
1187 BOOL16 WINAPI GetClassInfoEx16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASSEX16 *wc )
1192 TRACE("%x %s %p\n",hInstance,debugres_a( MapSL(name) ), wc);
1194 hInstance = GetExePtr( hInstance );
1195 if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1196 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1197 (hInstance != classPtr->hInstance)) return FALSE;
1198 wc->style = classPtr->style;
1199 wc->lpfnWndProc = CLASS_GetProc( classPtr, WIN_PROC_16 );
1200 wc->cbClsExtra = (INT16)classPtr->cbClsExtra;
1201 wc->cbWndExtra = (INT16)classPtr->cbWndExtra;
1202 wc->hInstance = (HINSTANCE16)classPtr->hInstance;
1203 wc->hIcon = classPtr->hIcon;
1204 wc->hIconSm = classPtr->hIconSm;
1205 wc->hCursor = classPtr->hCursor;
1206 wc->hbrBackground = classPtr->hbrBackground;
1207 wc->lpszClassName = (SEGPTR)0;
1208 wc->lpszMenuName = (SEGPTR)CLASS_GetMenuNameA( classPtr );
1209 if (HIWORD(wc->lpszMenuName)) /* Make it a SEGPTR */
1210 wc->lpszMenuName = SEGPTR_GET( (LPSTR)wc->lpszMenuName );
1211 wc->lpszClassName = name;
1213 /* We must return the atom of the class here instead of just TRUE. */
1218 /***********************************************************************
1219 * GetClassInfoExA (USER32.@)
1221 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name,
1227 TRACE("%x %p %p\n",hInstance, name, wc);
1229 if (!(atom = GlobalFindAtomA( name )) ||
1230 !(classPtr = CLASS_FindClassByAtom( atom, hInstance ))
1231 /*|| (hInstance != classPtr->hInstance) */ ) return FALSE;
1232 wc->style = classPtr->style;
1233 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1234 wc->cbClsExtra = classPtr->cbClsExtra;
1235 wc->cbWndExtra = classPtr->cbWndExtra;
1236 wc->hInstance = classPtr->hInstance;
1237 wc->hIcon = (HICON)classPtr->hIcon;
1238 wc->hIconSm = (HICON)classPtr->hIconSm;
1239 wc->hCursor = (HCURSOR)classPtr->hCursor;
1240 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1241 wc->lpszMenuName = CLASS_GetMenuNameA( classPtr );
1242 wc->lpszClassName = name;
1244 /* We must return the atom of the class here instead of just TRUE. */
1249 /***********************************************************************
1250 * GetClassInfoExW (USER32.@)
1252 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name,
1258 TRACE("%x %p %p\n",hInstance, name, wc);
1260 if (!(atom = GlobalFindAtomW( name )) ||
1261 !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1262 (hInstance != classPtr->hInstance)) return FALSE;
1263 wc->style = classPtr->style;
1264 wc->lpfnWndProc = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1265 wc->cbClsExtra = classPtr->cbClsExtra;
1266 wc->cbWndExtra = classPtr->cbWndExtra;
1267 wc->hInstance = classPtr->hInstance;
1268 wc->hIcon = (HICON)classPtr->hIcon;
1269 wc->hIconSm = (HICON)classPtr->hIconSm;
1270 wc->hCursor = (HCURSOR)classPtr->hCursor;
1271 wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1272 wc->lpszMenuName = CLASS_GetMenuNameW( classPtr );
1273 wc->lpszClassName = name;
1275 /* We must return the atom of the class here instead of just TRUE. */
1280 #if 0 /* toolhelp is in kernel, so this cannot work */
1282 /***********************************************************************
1283 * ClassFirst (TOOLHELP.69)
1285 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1287 TRACE("%p\n",pClassEntry);
1288 pClassEntry->wNext = 1;
1289 return ClassNext16( pClassEntry );
1293 /***********************************************************************
1294 * ClassNext (TOOLHELP.70)
1296 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1299 CLASS *class = firstClass;
1301 TRACE("%p\n",pClassEntry);
1303 if (!pClassEntry->wNext) return FALSE;
1304 for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1307 pClassEntry->wNext = 0;
1310 pClassEntry->hInst = class->hInstance;
1311 pClassEntry->wNext++;
1312 GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1313 sizeof(pClassEntry->szClassName) );