/* * Window classes functions * * Copyright 1993, 1996, 2003 Alexandre Julliard * Copyright 1998 Juergen Schmied (jsch) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include <assert.h> #include <stdarg.h> #include <stdlib.h> #include <string.h> #include "winerror.h" #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "wine/unicode.h" #include "win.h" #include "user_private.h" #include "controls.h" #include "wine/server.h" #include "wine/list.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(class); #define MAX_ATOM_LEN 255 /* from dlls/kernel32/atom.c */ typedef struct tagCLASS { struct list entry; /* Entry in class list */ UINT style; /* Class style */ BOOL local; /* Local class? */ WNDPROC winproc; /* Window procedure */ INT cbClsExtra; /* Class extra bytes */ INT cbWndExtra; /* Window extra bytes */ LPWSTR menuName; /* Default menu name (Unicode followed by ASCII) */ struct dce *dce; /* Opaque pointer to class DCE */ HINSTANCE hInstance; /* Module that created the task */ HICON hIcon; /* Default icon */ HICON hIconSm; /* Default small icon */ HCURSOR hCursor; /* Default cursor */ HBRUSH hbrBackground; /* Default background */ ATOM atomName; /* Name of the class */ WCHAR name[MAX_ATOM_LEN + 1]; } CLASS; static struct list class_list = LIST_INIT( class_list ); #define CLASS_OTHER_PROCESS ((CLASS *)1) /*********************************************************************** * get_class_ptr */ static CLASS *get_class_ptr( HWND hwnd, BOOL write_access ) { WND *ptr = WIN_GetPtr( hwnd ); if (ptr) { if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class; if (!write_access) return CLASS_OTHER_PROCESS; /* modifying classes in other processes is not allowed */ if (ptr == WND_DESKTOP || IsWindow( hwnd )) { SetLastError( ERROR_ACCESS_DENIED ); return NULL; } } SetLastError( ERROR_INVALID_WINDOW_HANDLE ); return NULL; } /*********************************************************************** * release_class_ptr */ static inline void release_class_ptr( CLASS *ptr ) { USER_Unlock(); } /*********************************************************************** * get_int_atom_value */ ATOM get_int_atom_value( LPCWSTR name ) { UINT ret = 0; if (IS_INTRESOURCE(name)) return LOWORD(name); if (*name++ != '#') return 0; while (*name) { if (*name < '0' || *name > '9') return 0; ret = ret * 10 + *name++ - '0'; if (ret > 0xffff) return 0; } return ret; } /*********************************************************************** * set_server_info * * Set class info with the wine server. */ static BOOL set_server_info( HWND hwnd, INT offset, LONG_PTR newval, UINT size ) { BOOL ret; SERVER_START_REQ( set_class_info ) { req->window = wine_server_user_handle( hwnd ); req->extra_offset = -1; switch(offset) { case GCW_ATOM: req->flags = SET_CLASS_ATOM; req->atom = LOWORD(newval); case GCL_STYLE: req->flags = SET_CLASS_STYLE; req->style = newval; break; case GCL_CBWNDEXTRA: req->flags = SET_CLASS_WINEXTRA; req->win_extra = newval; break; case GCLP_HMODULE: req->flags = SET_CLASS_INSTANCE; req->instance = wine_server_client_ptr( (void *)newval ); break; default: assert( offset >= 0 ); req->flags = SET_CLASS_EXTRA; req->extra_offset = offset; req->extra_size = size; if ( size == sizeof(LONG) ) { LONG newlong = newval; memcpy( &req->extra_value, &newlong, sizeof(LONG) ); } else memcpy( &req->extra_value, &newval, sizeof(LONG_PTR) ); break; } ret = !wine_server_call_err( req ); } SERVER_END_REQ; return ret; } /*********************************************************************** * CLASS_GetMenuNameA * * Get the menu name as a ASCII string. */ static inline LPSTR CLASS_GetMenuNameA( CLASS *classPtr ) { if (IS_INTRESOURCE(classPtr->menuName)) return (LPSTR)classPtr->menuName; return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1); } /*********************************************************************** * CLASS_GetMenuNameW * * Get the menu name as a Unicode string. */ static inline LPWSTR CLASS_GetMenuNameW( CLASS *classPtr ) { return classPtr->menuName; } /*********************************************************************** * CLASS_SetMenuNameA * * Set the menu name in a class structure by copying the string. */ static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name ) { if (!IS_INTRESOURCE(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName ); if (!IS_INTRESOURCE(name)) { DWORD lenA = strlen(name) + 1; DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 ); classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) ); MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW ); memcpy( classPtr->menuName + lenW, name, lenA ); } else classPtr->menuName = (LPWSTR)name; } /*********************************************************************** * CLASS_SetMenuNameW * * Set the menu name in a class structure by copying the string. */ static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name ) { if (!IS_INTRESOURCE(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName ); if (!IS_INTRESOURCE(name)) { DWORD lenW = strlenW(name) + 1; DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL ); classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) ); memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) ); WideCharToMultiByte( CP_ACP, 0, name, lenW, (char *)(classPtr->menuName + lenW), lenA, NULL, NULL ); } else classPtr->menuName = (LPWSTR)name; } /*********************************************************************** * CLASS_FreeClass * * Free a class structure. */ static void CLASS_FreeClass( CLASS *classPtr ) { TRACE("%p\n", classPtr); USER_Lock(); if (classPtr->dce) free_dce( classPtr->dce, 0 ); list_remove( &classPtr->entry ); if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1)) DeleteObject( classPtr->hbrBackground ); HeapFree( GetProcessHeap(), 0, classPtr->menuName ); HeapFree( GetProcessHeap(), 0, classPtr ); USER_Unlock(); } /*********************************************************************** * CLASS_FindClass * * Return a pointer to the class. * hinstance has been normalized by the caller. */ static CLASS *CLASS_FindClass( LPCWSTR name, HINSTANCE hinstance ) { struct list *ptr; ATOM atom = get_int_atom_value( name ); USER_Lock(); LIST_FOR_EACH( ptr, &class_list ) { CLASS *class = LIST_ENTRY( ptr, CLASS, entry ); if (atom) { if (class->atomName != atom) continue; } else { if (!name || strcmpiW( class->name, name )) continue; } if (!hinstance || !class->local || class->hInstance == hinstance) { TRACE("%s %p -> %p\n", debugstr_w(name), hinstance, class); return class; } } USER_Unlock(); TRACE("%s %p -> not found\n", debugstr_w(name), hinstance); return NULL; } /*********************************************************************** * CLASS_RegisterClass * * The real RegisterClass() functionality. */ static CLASS *CLASS_RegisterClass( LPCWSTR name, HINSTANCE hInstance, BOOL local, DWORD style, INT classExtra, INT winExtra ) { CLASS *classPtr; BOOL ret; TRACE("name=%s hinst=%p style=0x%x clExtr=0x%x winExtr=0x%x\n", debugstr_w(name), hInstance, style, classExtra, winExtra ); /* Fix the extra bytes value */ if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */ WARN("Class extra bytes %d is > 40\n", classExtra); if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */ WARN("Win extra bytes %d is > 40\n", winExtra ); classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra ); if (!classPtr) return NULL; classPtr->atomName = get_int_atom_value( name ); if (!classPtr->atomName && name) strcpyW( classPtr->name, name ); else GlobalGetAtomNameW( classPtr->atomName, classPtr->name, sizeof(classPtr->name)/sizeof(WCHAR) ); SERVER_START_REQ( create_class ) { req->local = local; req->style = style; req->instance = wine_server_client_ptr( hInstance ); req->extra = classExtra; req->win_extra = winExtra; req->client_ptr = wine_server_client_ptr( classPtr ); req->atom = classPtr->atomName; if (!req->atom && name) wine_server_add_data( req, name, strlenW(name) * sizeof(WCHAR) ); ret = !wine_server_call_err( req ); classPtr->atomName = reply->atom; } SERVER_END_REQ; if (!ret) { HeapFree( GetProcessHeap(), 0, classPtr ); return NULL; } classPtr->style = style; classPtr->local = local; classPtr->cbWndExtra = winExtra; classPtr->cbClsExtra = classExtra; classPtr->hInstance = hInstance; /* Other non-null values must be set by caller */ USER_Lock(); if (local) list_add_head( &class_list, &classPtr->entry ); else list_add_tail( &class_list, &classPtr->entry ); return classPtr; } /*********************************************************************** * register_builtin * * Register a builtin control class. * This allows having both ASCII and Unicode winprocs for the same class. */ static void register_builtin( const struct builtin_class_descr *descr ) { CLASS *classPtr; if (!(classPtr = CLASS_RegisterClass( descr->name, user32_module, FALSE, descr->style, 0, descr->extra ))) return; classPtr->hCursor = LoadCursorA( 0, (LPSTR)descr->cursor ); classPtr->hbrBackground = descr->brush; classPtr->winproc = BUILTIN_WINPROC( descr->proc ); release_class_ptr( classPtr ); } /*********************************************************************** * CLASS_RegisterBuiltinClasses */ void CLASS_RegisterBuiltinClasses(void) { register_builtin( &DESKTOP_builtin_class ); register_builtin( &BUTTON_builtin_class ); register_builtin( &COMBO_builtin_class ); register_builtin( &COMBOLBOX_builtin_class ); register_builtin( &DIALOG_builtin_class ); register_builtin( &EDIT_builtin_class ); register_builtin( &ICONTITLE_builtin_class ); register_builtin( &LISTBOX_builtin_class ); register_builtin( &MDICLIENT_builtin_class ); register_builtin( &MENU_builtin_class ); register_builtin( &MESSAGE_builtin_class ); register_builtin( &SCROLL_builtin_class ); register_builtin( &STATIC_builtin_class ); } /*********************************************************************** * get_class_winproc */ WNDPROC get_class_winproc( CLASS *class ) { return class->winproc; } /*********************************************************************** * get_class_dce */ struct dce *get_class_dce( CLASS *class ) { return class->dce; } /*********************************************************************** * set_class_dce */ struct dce *set_class_dce( CLASS *class, struct dce *dce ) { if (class->dce) return class->dce; /* already set, don't change it */ class->dce = dce; return dce; } /*********************************************************************** * RegisterClassA (USER32.@) * * Register a window class. * * RETURNS * >0: Unique identifier * 0: Failure */ ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */ { WNDCLASSEXA wcex; wcex.cbSize = sizeof(wcex); wcex.style = wc->style; wcex.lpfnWndProc = wc->lpfnWndProc; wcex.cbClsExtra = wc->cbClsExtra; wcex.cbWndExtra = wc->cbWndExtra; wcex.hInstance = wc->hInstance; wcex.hIcon = wc->hIcon; wcex.hCursor = wc->hCursor; wcex.hbrBackground = wc->hbrBackground; wcex.lpszMenuName = wc->lpszMenuName; wcex.lpszClassName = wc->lpszClassName; wcex.hIconSm = 0; return RegisterClassExA( &wcex ); } /*********************************************************************** * RegisterClassW (USER32.@) * * See RegisterClassA. */ ATOM WINAPI RegisterClassW( const WNDCLASSW* wc ) { WNDCLASSEXW wcex; wcex.cbSize = sizeof(wcex); wcex.style = wc->style; wcex.lpfnWndProc = wc->lpfnWndProc; wcex.cbClsExtra = wc->cbClsExtra; wcex.cbWndExtra = wc->cbWndExtra; wcex.hInstance = wc->hInstance; wcex.hIcon = wc->hIcon; wcex.hCursor = wc->hCursor; wcex.hbrBackground = wc->hbrBackground; wcex.lpszMenuName = wc->lpszMenuName; wcex.lpszClassName = wc->lpszClassName; wcex.hIconSm = 0; return RegisterClassExW( &wcex ); } /*********************************************************************** * RegisterClassExA (USER32.@) */ ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc ) { ATOM atom; CLASS *classPtr; HINSTANCE instance; if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 || wc->hInstance == user32_module) /* we can't register a class for user32 */ { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL ); if (!IS_INTRESOURCE(wc->lpszClassName)) { WCHAR name[MAX_ATOM_LEN + 1]; if (!MultiByteToWideChar( CP_ACP, 0, wc->lpszClassName, -1, name, MAX_ATOM_LEN + 1 )) return 0; classPtr = CLASS_RegisterClass( name, instance, !(wc->style & CS_GLOBALCLASS), wc->style, wc->cbClsExtra, wc->cbWndExtra ); } else { classPtr = CLASS_RegisterClass( (LPCWSTR)wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS), wc->style, wc->cbClsExtra, wc->cbWndExtra ); } if (!classPtr) return 0; atom = classPtr->atomName; TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n", debugstr_a(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground, wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr ); classPtr->hIcon = wc->hIcon; classPtr->hIconSm = wc->hIconSm; classPtr->hCursor = wc->hCursor; classPtr->hbrBackground = wc->hbrBackground; classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, FALSE ); CLASS_SetMenuNameA( classPtr, wc->lpszMenuName ); release_class_ptr( classPtr ); return atom; } /*********************************************************************** * RegisterClassExW (USER32.@) */ ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc ) { ATOM atom; CLASS *classPtr; HINSTANCE instance; if (wc->cbClsExtra < 0 || wc->cbWndExtra < 0 || wc->hInstance == user32_module) /* we can't register a class for user32 */ { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } if (!(instance = wc->hInstance)) instance = GetModuleHandleW( NULL ); if (!(classPtr = CLASS_RegisterClass( wc->lpszClassName, instance, !(wc->style & CS_GLOBALCLASS), wc->style, wc->cbClsExtra, wc->cbWndExtra ))) return 0; atom = classPtr->atomName; TRACE("name=%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n", debugstr_w(wc->lpszClassName), atom, wc->lpfnWndProc, instance, wc->hbrBackground, wc->style, wc->cbClsExtra, wc->cbWndExtra, classPtr ); classPtr->hIcon = wc->hIcon; classPtr->hIconSm = wc->hIconSm; classPtr->hCursor = wc->hCursor; classPtr->hbrBackground = wc->hbrBackground; classPtr->winproc = WINPROC_AllocProc( wc->lpfnWndProc, TRUE ); CLASS_SetMenuNameW( classPtr, wc->lpszMenuName ); release_class_ptr( classPtr ); return atom; } /*********************************************************************** * UnregisterClassA (USER32.@) */ BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance ) { if (!IS_INTRESOURCE(className)) { WCHAR name[MAX_ATOM_LEN + 1]; if (!MultiByteToWideChar( CP_ACP, 0, className, -1, name, MAX_ATOM_LEN + 1 )) return FALSE; return UnregisterClassW( name, hInstance ); } return UnregisterClassW( (LPCWSTR)className, hInstance ); } /*********************************************************************** * UnregisterClassW (USER32.@) */ BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance ) { CLASS *classPtr = NULL; SERVER_START_REQ( destroy_class ) { req->instance = wine_server_client_ptr( hInstance ); if (!(req->atom = get_int_atom_value(className)) && className) wine_server_add_data( req, className, strlenW(className) * sizeof(WCHAR) ); if (!wine_server_call_err( req )) classPtr = wine_server_get_ptr( reply->client_ptr ); } SERVER_END_REQ; if (classPtr) CLASS_FreeClass( classPtr ); return (classPtr != NULL); } /*********************************************************************** * GetClassWord (USER32.@) */ WORD WINAPI GetClassWord( HWND hwnd, INT offset ) { CLASS *class; WORD retvalue = 0; if (offset < 0) return GetClassLongA( hwnd, offset ); if (!(class = get_class_ptr( hwnd, FALSE ))) return 0; if (class == CLASS_OTHER_PROCESS) { SERVER_START_REQ( set_class_info ) { req->window = wine_server_user_handle( hwnd ); req->flags = 0; req->extra_offset = offset; req->extra_size = sizeof(retvalue); if (!wine_server_call_err( req )) memcpy( &retvalue, &reply->old_extra_value, sizeof(retvalue) ); } SERVER_END_REQ; return retvalue; } if (offset <= class->cbClsExtra - sizeof(WORD)) memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(retvalue) ); else SetLastError( ERROR_INVALID_INDEX ); release_class_ptr( class ); return retvalue; } /*********************************************************************** * CLASS_GetClassLong * * Implementation of GetClassLong(Ptr)A/W */ static ULONG_PTR CLASS_GetClassLong( HWND hwnd, INT offset, UINT size, BOOL unicode ) { CLASS *class; ULONG_PTR retvalue = 0; if (!(class = get_class_ptr( hwnd, FALSE ))) return 0; if (class == CLASS_OTHER_PROCESS) { SERVER_START_REQ( set_class_info ) { req->window = wine_server_user_handle( hwnd ); req->flags = 0; req->extra_offset = (offset >= 0) ? offset : -1; req->extra_size = (offset >= 0) ? size : 0; if (!wine_server_call_err( req )) { switch(offset) { case GCLP_HBRBACKGROUND: case GCLP_HCURSOR: case GCLP_HICON: case GCLP_HICONSM: case GCLP_WNDPROC: case GCLP_MENUNAME: FIXME( "offset %d (%s) not supported on other process window %p\n", offset, SPY_GetClassLongOffsetName(offset), hwnd ); SetLastError( ERROR_INVALID_HANDLE ); break; case GCL_STYLE: retvalue = reply->old_style; break; case GCL_CBWNDEXTRA: retvalue = reply->old_win_extra; break; case GCL_CBCLSEXTRA: retvalue = reply->old_extra; break; case GCLP_HMODULE: retvalue = (ULONG_PTR)wine_server_get_ptr( reply->old_instance ); break; case GCW_ATOM: retvalue = reply->old_atom; break; default: if (offset >= 0) { if (size == sizeof(DWORD)) { DWORD retdword; memcpy( &retdword, &reply->old_extra_value, sizeof(DWORD) ); retvalue = retdword; } else memcpy( &retvalue, &reply->old_extra_value, sizeof(ULONG_PTR) ); } else SetLastError( ERROR_INVALID_INDEX ); break; } } } SERVER_END_REQ; return retvalue; } if (offset >= 0) { if (offset <= class->cbClsExtra - size) { if (size == sizeof(DWORD)) { DWORD retdword; memcpy( &retdword, (char *)(class + 1) + offset, sizeof(DWORD) ); retvalue = retdword; } else memcpy( &retvalue, (char *)(class + 1) + offset, sizeof(ULONG_PTR) ); } else SetLastError( ERROR_INVALID_INDEX ); release_class_ptr( class ); return retvalue; } switch(offset) { case GCLP_HBRBACKGROUND: retvalue = (ULONG_PTR)class->hbrBackground; break; case GCLP_HCURSOR: retvalue = (ULONG_PTR)class->hCursor; break; case GCLP_HICON: retvalue = (ULONG_PTR)class->hIcon; break; case GCLP_HICONSM: retvalue = (ULONG_PTR)class->hIconSm; break; case GCL_STYLE: retvalue = class->style; break; case GCL_CBWNDEXTRA: retvalue = class->cbWndExtra; break; case GCL_CBCLSEXTRA: retvalue = class->cbClsExtra; break; case GCLP_HMODULE: retvalue = (ULONG_PTR)class->hInstance; break; case GCLP_WNDPROC: retvalue = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode ); break; case GCLP_MENUNAME: retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class ); if (unicode) retvalue = (ULONG_PTR)CLASS_GetMenuNameW( class ); else retvalue = (ULONG_PTR)CLASS_GetMenuNameA( class ); break; case GCW_ATOM: retvalue = class->atomName; break; default: SetLastError( ERROR_INVALID_INDEX ); break; } release_class_ptr( class ); return retvalue; } /*********************************************************************** * GetClassLongW (USER32.@) */ DWORD WINAPI GetClassLongW( HWND hwnd, INT offset ) { return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), TRUE ); } /*********************************************************************** * GetClassLongA (USER32.@) */ DWORD WINAPI GetClassLongA( HWND hwnd, INT offset ) { return CLASS_GetClassLong( hwnd, offset, sizeof(DWORD), FALSE ); } /*********************************************************************** * SetClassWord (USER32.@) */ WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval ) { CLASS *class; WORD retval = 0; if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval ); if (!(class = get_class_ptr( hwnd, TRUE ))) return 0; SERVER_START_REQ( set_class_info ) { req->window = wine_server_user_handle( hwnd ); req->flags = SET_CLASS_EXTRA; req->extra_offset = offset; req->extra_size = sizeof(newval); memcpy( &req->extra_value, &newval, sizeof(newval) ); if (!wine_server_call_err( req )) { void *ptr = (char *)(class + 1) + offset; memcpy( &retval, ptr, sizeof(retval) ); memcpy( ptr, &newval, sizeof(newval) ); } } SERVER_END_REQ; release_class_ptr( class ); return retval; } /*********************************************************************** * CLASS_SetClassLong * * Implementation of SetClassLong(Ptr)A/W */ static ULONG_PTR CLASS_SetClassLong( HWND hwnd, INT offset, LONG_PTR newval, UINT size, BOOL unicode ) { CLASS *class; ULONG_PTR retval = 0; if (!(class = get_class_ptr( hwnd, TRUE ))) return 0; if (offset >= 0) { if (set_server_info( hwnd, offset, newval, size )) { void *ptr = (char *)(class + 1) + offset; if ( size == sizeof(LONG) ) { DWORD retdword; LONG newlong = newval; memcpy( &retdword, ptr, sizeof(DWORD) ); memcpy( ptr, &newlong, sizeof(LONG) ); retval = retdword; } else { memcpy( &retval, ptr, sizeof(ULONG_PTR) ); memcpy( ptr, &newval, sizeof(LONG_PTR) ); } } } else switch(offset) { case GCLP_MENUNAME: if ( unicode ) CLASS_SetMenuNameW( class, (LPCWSTR)newval ); else CLASS_SetMenuNameA( class, (LPCSTR)newval ); retval = 0; /* Old value is now meaningless anyway */ break; case GCLP_WNDPROC: retval = (ULONG_PTR)WINPROC_GetProc( class->winproc, unicode ); class->winproc = WINPROC_AllocProc( (WNDPROC)newval, unicode ); break; case GCLP_HBRBACKGROUND: retval = (ULONG_PTR)class->hbrBackground; class->hbrBackground = (HBRUSH)newval; break; case GCLP_HCURSOR: retval = (ULONG_PTR)class->hCursor; class->hCursor = (HCURSOR)newval; break; case GCLP_HICON: retval = (ULONG_PTR)class->hIcon; class->hIcon = (HICON)newval; break; case GCLP_HICONSM: retval = (ULONG_PTR)class->hIconSm; class->hIconSm = (HICON)newval; break; case GCL_STYLE: if (!set_server_info( hwnd, offset, newval, size )) break; retval = class->style; class->style = newval; break; case GCL_CBWNDEXTRA: if (!set_server_info( hwnd, offset, newval, size )) break; retval = class->cbWndExtra; class->cbWndExtra = newval; break; case GCLP_HMODULE: if (!set_server_info( hwnd, offset, newval, size )) break; retval = (ULONG_PTR)class->hInstance; class->hInstance = (HINSTANCE)newval; break; case GCW_ATOM: if (!set_server_info( hwnd, offset, newval, size )) break; retval = class->atomName; class->atomName = newval; GlobalGetAtomNameW( newval, class->name, sizeof(class->name)/sizeof(WCHAR) ); break; case GCL_CBCLSEXTRA: /* cannot change this one */ SetLastError( ERROR_INVALID_PARAMETER ); break; default: SetLastError( ERROR_INVALID_INDEX ); break; } release_class_ptr( class ); return retval; } /*********************************************************************** * SetClassLongW (USER32.@) */ DWORD WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval ) { return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), TRUE ); } /*********************************************************************** * SetClassLongA (USER32.@) */ DWORD WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval ) { return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG), FALSE ); } /*********************************************************************** * GetClassNameA (USER32.@) */ INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count ) { WCHAR tmpbuf[MAX_ATOM_LEN + 1]; DWORD len; if (count <= 0) return 0; if (!GetClassNameW( hwnd, tmpbuf, sizeof(tmpbuf)/sizeof(WCHAR) )) return 0; RtlUnicodeToMultiByteN( buffer, count - 1, &len, tmpbuf, strlenW(tmpbuf) * sizeof(WCHAR) ); buffer[len] = 0; return len; } /*********************************************************************** * GetClassNameW (USER32.@) */ INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count ) { CLASS *class; INT ret; TRACE("%p %p %d\n", hwnd, buffer, count); if (count <= 0) return 0; if (!(class = get_class_ptr( hwnd, FALSE ))) return 0; if (class == CLASS_OTHER_PROCESS) { WCHAR tmpbuf[MAX_ATOM_LEN + 1]; ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), tmpbuf, MAX_ATOM_LEN + 1 ); if (ret) { ret = min(count - 1, ret); memcpy(buffer, tmpbuf, ret * sizeof(WCHAR)); buffer[ret] = 0; } } else { lstrcpynW( buffer, class->name, count ); release_class_ptr( class ); ret = strlenW( buffer ); } return ret; } /*********************************************************************** * RealGetWindowClassA (USER32.@) */ UINT WINAPI RealGetWindowClassA( HWND hwnd, LPSTR buffer, UINT count ) { return GetClassNameA( hwnd, buffer, count ); } /*********************************************************************** * RealGetWindowClassW (USER32.@) */ UINT WINAPI RealGetWindowClassW( HWND hwnd, LPWSTR buffer, UINT count ) { return GetClassNameW( hwnd, buffer, count ); } /*********************************************************************** * GetClassInfoA (USER32.@) */ BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name, WNDCLASSA *wc ) { WNDCLASSEXA wcex; UINT ret = GetClassInfoExA( hInstance, name, &wcex ); if (ret) { wc->style = wcex.style; wc->lpfnWndProc = wcex.lpfnWndProc; wc->cbClsExtra = wcex.cbClsExtra; wc->cbWndExtra = wcex.cbWndExtra; wc->hInstance = wcex.hInstance; wc->hIcon = wcex.hIcon; wc->hCursor = wcex.hCursor; wc->hbrBackground = wcex.hbrBackground; wc->lpszMenuName = wcex.lpszMenuName; wc->lpszClassName = wcex.lpszClassName; } return ret; } /*********************************************************************** * GetClassInfoW (USER32.@) */ BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSW *wc ) { WNDCLASSEXW wcex; UINT ret = GetClassInfoExW( hInstance, name, &wcex ); if (ret) { wc->style = wcex.style; wc->lpfnWndProc = wcex.lpfnWndProc; wc->cbClsExtra = wcex.cbClsExtra; wc->cbWndExtra = wcex.cbWndExtra; wc->hInstance = wcex.hInstance; wc->hIcon = wcex.hIcon; wc->hCursor = wcex.hCursor; wc->hbrBackground = wcex.hbrBackground; wc->lpszMenuName = wcex.lpszMenuName; wc->lpszClassName = wcex.lpszClassName; } return ret; } /*********************************************************************** * GetClassInfoExA (USER32.@) */ BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name, WNDCLASSEXA *wc ) { ATOM atom; CLASS *classPtr; TRACE("%p %s %p\n", hInstance, debugstr_a(name), wc); if (!hInstance) hInstance = user32_module; if (!IS_INTRESOURCE(name)) { WCHAR nameW[MAX_ATOM_LEN + 1]; if (!MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, sizeof(nameW)/sizeof(WCHAR) )) return FALSE; classPtr = CLASS_FindClass( nameW, hInstance ); } else classPtr = CLASS_FindClass( (LPCWSTR)name, hInstance ); if (!classPtr) { SetLastError( ERROR_CLASS_DOES_NOT_EXIST ); return FALSE; } wc->style = classPtr->style; wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, FALSE ); wc->cbClsExtra = classPtr->cbClsExtra; wc->cbWndExtra = classPtr->cbWndExtra; wc->hInstance = (hInstance == user32_module) ? 0 : hInstance; wc->hIcon = classPtr->hIcon; wc->hIconSm = classPtr->hIconSm; wc->hCursor = classPtr->hCursor; wc->hbrBackground = classPtr->hbrBackground; wc->lpszMenuName = CLASS_GetMenuNameA( classPtr ); wc->lpszClassName = name; atom = classPtr->atomName; release_class_ptr( classPtr ); /* We must return the atom of the class here instead of just TRUE. */ return atom; } /*********************************************************************** * GetClassInfoExW (USER32.@) */ BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name, WNDCLASSEXW *wc ) { ATOM atom; CLASS *classPtr; TRACE("%p %s %p\n", hInstance, debugstr_w(name), wc); if (!hInstance) hInstance = user32_module; if (!(classPtr = CLASS_FindClass( name, hInstance ))) { SetLastError( ERROR_CLASS_DOES_NOT_EXIST ); return FALSE; } wc->style = classPtr->style; wc->lpfnWndProc = WINPROC_GetProc( classPtr->winproc, TRUE ); wc->cbClsExtra = classPtr->cbClsExtra; wc->cbWndExtra = classPtr->cbWndExtra; wc->hInstance = (hInstance == user32_module) ? 0 : hInstance; wc->hIcon = classPtr->hIcon; wc->hIconSm = classPtr->hIconSm; wc->hCursor = classPtr->hCursor; wc->hbrBackground = classPtr->hbrBackground; wc->lpszMenuName = CLASS_GetMenuNameW( classPtr ); wc->lpszClassName = name; atom = classPtr->atomName; release_class_ptr( classPtr ); /* We must return the atom of the class here instead of just TRUE. */ return atom; } #if 0 /* toolhelp is in kernel, so this cannot work */ /*********************************************************************** * ClassFirst (TOOLHELP.69) */ BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry ) { TRACE("%p\n",pClassEntry); pClassEntry->wNext = 1; return ClassNext16( pClassEntry ); } /*********************************************************************** * ClassNext (TOOLHELP.70) */ BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry ) { int i; CLASS *class = firstClass; TRACE("%p\n",pClassEntry); if (!pClassEntry->wNext) return FALSE; for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next; if (!class) { pClassEntry->wNext = 0; return FALSE; } pClassEntry->hInst = class->hInstance; pClassEntry->wNext++; GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName, sizeof(pClassEntry->szClassName) ); return TRUE; } #endif /* 64bit versions */ #ifdef GetClassLongPtrA #undef GetClassLongPtrA #endif #ifdef GetClassLongPtrW #undef GetClassLongPtrW #endif #ifdef SetClassLongPtrA #undef SetClassLongPtrA #endif #ifdef SetClassLongPtrW #undef SetClassLongPtrW #endif /*********************************************************************** * GetClassLongPtrA (USER32.@) */ ULONG_PTR WINAPI GetClassLongPtrA( HWND hwnd, INT offset ) { return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), FALSE ); } /*********************************************************************** * GetClassLongPtrW (USER32.@) */ ULONG_PTR WINAPI GetClassLongPtrW( HWND hwnd, INT offset ) { return CLASS_GetClassLong( hwnd, offset, sizeof(ULONG_PTR), TRUE ); } /*********************************************************************** * SetClassLongPtrW (USER32.@) */ ULONG_PTR WINAPI SetClassLongPtrW( HWND hwnd, INT offset, LONG_PTR newval ) { return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), TRUE ); } /*********************************************************************** * SetClassLongPtrA (USER32.@) */ ULONG_PTR WINAPI SetClassLongPtrA( HWND hwnd, INT offset, LONG_PTR newval ) { return CLASS_SetClassLong( hwnd, offset, newval, sizeof(LONG_PTR), FALSE ); }