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wine/dlls/win32u/class.c
Jacek Caban f1d1d88c9e win32u: Return client menu name from NtUserUnregisterClass. 
Spotted by Esme Povirk.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2022-03-28 10:12:01 +02:00

974 lines
32 KiB
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/*
* Window classes functions
*
* Copyright 1993, 1996, 2003 Alexandre Julliard
* Copyright 1995 Martin von Loewis
* 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
*/
#if 0
#pragma makedep unix
#endif
#include <pthread.h>
#include <assert.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "win32u_private.h"
#include "ntuser_private.h"
#include "wine/server.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(class);
WINE_DECLARE_DEBUG_CHANNEL(win);
#define MAX_WINPROCS 4096
#define WINPROC_PROC16 ((void *)1) /* placeholder for 16-bit window procs */
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 */
struct dce *dce; /* Opaque pointer to class DCE */
UINT_PTR instance; /* Module that created the task */
HICON hIcon; /* Default icon */
HICON hIconSm; /* Default small icon */
HICON hIconSmIntern; /* Internal small icon, derived from hIcon */
HCURSOR hCursor; /* Default cursor */
HBRUSH hbrBackground; /* Default background */
ATOM atomName; /* Name of the class */
WCHAR name[MAX_ATOM_LEN + 1];
WCHAR *basename; /* Base name for redirected classes, pointer within 'name'. */
struct client_menu_name menu_name; /* Default menu name */
} CLASS;
static WINDOWPROC winproc_array[MAX_WINPROCS];
static UINT winproc_used = NB_BUILTIN_WINPROCS;
static pthread_mutex_t winproc_lock = PTHREAD_MUTEX_INITIALIZER;
static struct list class_list = LIST_INIT( class_list );
static HINSTANCE user32_module;
/* find an existing winproc for a given function and type */
/* FIXME: probably should do something more clever than a linear search */
static WINDOWPROC *find_winproc( WNDPROC func, BOOL ansi )
{
unsigned int i;
for (i = 0; i < NB_BUILTIN_AW_WINPROCS; i++)
{
/* match either proc, some apps confuse A and W */
if (winproc_array[i].procA != func && winproc_array[i].procW != func) continue;
return &winproc_array[i];
}
for (i = NB_BUILTIN_AW_WINPROCS; i < winproc_used; i++)
{
if (ansi && winproc_array[i].procA != func) continue;
if (!ansi && winproc_array[i].procW != func) continue;
return &winproc_array[i];
}
return NULL;
}
/* return the window proc for a given handle, or NULL for an invalid handle,
* or WINPROC_PROC16 for a handle to a 16-bit proc. */
WINDOWPROC *get_winproc_ptr( WNDPROC handle )
{
UINT index = LOWORD(handle);
if ((ULONG_PTR)handle >> 16 != WINPROC_HANDLE) return NULL;
if (index >= MAX_WINPROCS) return WINPROC_PROC16;
if (index >= winproc_used) return NULL;
return &winproc_array[index];
}
/* create a handle for a given window proc */
static inline WNDPROC proc_to_handle( WINDOWPROC *proc )
{
return (WNDPROC)(ULONG_PTR)((proc - winproc_array) | (WINPROC_HANDLE << 16));
}
/* allocate and initialize a new winproc */
static inline WINDOWPROC *alloc_winproc_ptr( WNDPROC func, BOOL ansi )
{
WINDOWPROC *proc;
/* check if the function is already a win proc */
if (!func) return NULL;
if ((proc = get_winproc_ptr( func ))) return proc;
pthread_mutex_lock( &winproc_lock );
/* check if we already have a winproc for that function */
if (!(proc = find_winproc( func, ansi )))
{
if (winproc_used < MAX_WINPROCS)
{
proc = &winproc_array[winproc_used++];
if (ansi) proc->procA = func;
else proc->procW = func;
TRACE_(win)( "allocated %p for %c %p (%d/%d used)\n",
proc_to_handle(proc), ansi ? 'A' : 'W', func,
winproc_used, MAX_WINPROCS );
}
else WARN_(win)( "too many winprocs, cannot allocate one for %p\n", func );
}
else TRACE_(win)( "reusing %p for %p\n", proc_to_handle(proc), func );
pthread_mutex_unlock( &winproc_lock );
return proc;
}
/**********************************************************************
* alloc_winproc
*
* Allocate a window procedure for a window or class.
*
* Note that allocated winprocs are never freed; the idea is that even if an app creates a
* lot of windows, it will usually only have a limited number of window procedures, so the
* array won't grow too large, and this way we avoid the need to track allocations per window.
*/
WNDPROC alloc_winproc( WNDPROC func, BOOL ansi )
{
WINDOWPROC *proc;
if (!(proc = alloc_winproc_ptr( func, ansi ))) return func;
if (proc == WINPROC_PROC16) return func;
return proc_to_handle( proc );
}
/* Get a window procedure pointer that can be passed to the Windows program. */
WNDPROC get_winproc( WNDPROC proc, BOOL ansi )
{
WINDOWPROC *ptr = get_winproc_ptr( proc );
if (!ptr || ptr == WINPROC_PROC16) return proc;
if (ansi)
{
if (ptr->procA) return ptr->procA;
return proc;
}
else
{
if (ptr->procW) return ptr->procW;
return proc;
}
}
/* Return the window procedure type, or the default value if not a winproc handle. */
BOOL is_winproc_unicode( WNDPROC proc, BOOL def_val )
{
WINDOWPROC *ptr = get_winproc_ptr( proc );
if (!ptr) return def_val;
if (ptr == WINPROC_PROC16) return FALSE; /* 16-bit is always A */
if (ptr->procA && ptr->procW) return def_val; /* can be both */
return ptr->procW != NULL;
}
void get_winproc_params( struct win_proc_params *params )
{
WINDOWPROC *proc = get_winproc_ptr( params->func );
if (!proc)
{
params->procW = params->procA = NULL;
}
else if (proc == WINPROC_PROC16)
{
params->procW = params->procA = WINPROC_PROC16;
}
else
{
params->procA = proc->procA;
params->procW = proc->procW;
}
}
/***********************************************************************
* NtUserInitializeClientPfnArrays (win32u.@)
*/
NTSTATUS WINAPI NtUserInitializeClientPfnArrays( const struct user_client_procs *client_procsA,
const struct user_client_procs *client_procsW,
const void *client_workers, HINSTANCE user_module )
{
winproc_array[WINPROC_BUTTON].procA = client_procsA->pButtonWndProc;
winproc_array[WINPROC_BUTTON].procW = client_procsW->pButtonWndProc;
winproc_array[WINPROC_COMBO].procA = client_procsA->pComboWndProc;
winproc_array[WINPROC_COMBO].procW = client_procsW->pComboWndProc;
winproc_array[WINPROC_DEFWND].procA = client_procsA->pDefWindowProc;
winproc_array[WINPROC_DEFWND].procW = client_procsW->pDefWindowProc;
winproc_array[WINPROC_DIALOG].procA = client_procsA->pDefDlgProc;
winproc_array[WINPROC_DIALOG].procW = client_procsW->pDefDlgProc;
winproc_array[WINPROC_EDIT].procA = client_procsA->pEditWndProc;
winproc_array[WINPROC_EDIT].procW = client_procsW->pEditWndProc;
winproc_array[WINPROC_LISTBOX].procA = client_procsA->pListBoxWndProc;
winproc_array[WINPROC_LISTBOX].procW = client_procsW->pListBoxWndProc;
winproc_array[WINPROC_MDICLIENT].procA = client_procsA->pMDIClientWndProc;
winproc_array[WINPROC_MDICLIENT].procW = client_procsW->pMDIClientWndProc;
winproc_array[WINPROC_SCROLLBAR].procA = client_procsA->pScrollBarWndProc;
winproc_array[WINPROC_SCROLLBAR].procW = client_procsW->pScrollBarWndProc;
winproc_array[WINPROC_STATIC].procA = client_procsA->pStaticWndProc;
winproc_array[WINPROC_STATIC].procW = client_procsW->pStaticWndProc;
winproc_array[WINPROC_IME].procA = client_procsA->pImeWndProc;
winproc_array[WINPROC_IME].procW = client_procsW->pImeWndProc;
winproc_array[WINPROC_DESKTOP].procA = client_procsA->pDesktopWndProc;
winproc_array[WINPROC_DESKTOP].procW = client_procsW->pDesktopWndProc;
winproc_array[WINPROC_ICONTITLE].procA = client_procsA->pIconTitleWndProc;
winproc_array[WINPROC_ICONTITLE].procW = client_procsW->pIconTitleWndProc;
winproc_array[WINPROC_MENU].procA = client_procsA->pPopupMenuWndProc;
winproc_array[WINPROC_MENU].procW = client_procsW->pPopupMenuWndProc;
winproc_array[WINPROC_MESSAGE].procA = client_procsA->pMessageWndProc;
winproc_array[WINPROC_MESSAGE].procW = client_procsW->pMessageWndProc;
user32_module = user_module;
return STATUS_SUCCESS;
}
/***********************************************************************
* get_int_atom_value
*/
ATOM get_int_atom_value( UNICODE_STRING *name )
{
const WCHAR *ptr = name->Buffer;
const WCHAR *end = ptr + name->Length / sizeof(WCHAR);
UINT ret = 0;
if (IS_INTRESOURCE(ptr)) return LOWORD(ptr);
if (*ptr++ != '#') return 0;
while (ptr < end)
{
if (*ptr < '0' || *ptr > '9') return 0;
ret = ret * 10 + *ptr++ - '0';
if (ret > 0xffff) return 0;
}
return ret;
}
/***********************************************************************
* get_class_ptr
*/
static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
{
WND *ptr = get_win_ptr( hwnd );
if (ptr)
{
if (ptr != WND_OTHER_PROCESS && ptr != WND_DESKTOP) return ptr->class;
if (!write_access) return OBJ_OTHER_PROCESS;
/* modifying classes in other processes is not allowed */
if (ptr == WND_DESKTOP || is_window( hwnd ))
{
SetLastError( ERROR_ACCESS_DENIED );
return NULL;
}
}
SetLastError( ERROR_INVALID_WINDOW_HANDLE );
return NULL;
}
/***********************************************************************
* release_class_ptr
*/
static void release_class_ptr( CLASS *ptr )
{
user_unlock();
}
static CLASS *find_class( HINSTANCE module, UNICODE_STRING *name )
{
ATOM atom = get_int_atom_value( name );
ULONG_PTR instance = (UINT_PTR)module & ~0xffff;
CLASS *class;
user_lock();
LIST_FOR_EACH_ENTRY( class, &class_list, CLASS, entry )
{
if (atom)
{
if (class->atomName != atom) continue;
}
else
{
if (wcsnicmp( class->name, name->Buffer, name->Length / sizeof(WCHAR) ) ||
class->name[name->Length / sizeof(WCHAR)]) continue;
}
if (!class->local || !module || (class->instance & ~0xffff) == instance)
{
TRACE( "%s %lx -> %p\n", debugstr_us(name), instance, class );
return class;
}
}
user_unlock();
return NULL;
}
/***********************************************************************
* 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;
}
/***********************************************************************
* NtUserRegisterClassExWOW (win32u.@)
*/
ATOM WINAPI NtUserRegisterClassExWOW( const WNDCLASSEXW *wc, UNICODE_STRING *name, UNICODE_STRING *version,
struct client_menu_name *client_menu_name, DWORD fnid,
DWORD flags, DWORD *wow )
{
const BOOL is_builtin = fnid, ansi = flags;
HINSTANCE instance;
CLASS *class;
ATOM atom;
BOOL ret;
/* create the desktop window to trigger builtin class registration */
if (!is_builtin) get_desktop_window();
if (wc->cbSize != sizeof(*wc) || wc->cbClsExtra < 0 || wc->cbWndExtra < 0 ||
(!is_builtin && wc->hInstance == user32_module)) /* we can't register a class for user32 */
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
if (!(instance = wc->hInstance)) instance = NtCurrentTeb()->Peb->ImageBaseAddress;
TRACE( "name=%s hinst=%p style=0x%x clExtr=0x%x winExtr=0x%x\n",
debugstr_us(name), instance, wc->style, wc->cbClsExtra, wc->cbWndExtra );
/* Fix the extra bytes value */
if (wc->cbClsExtra > 40) /* Extra bytes are limited to 40 in Win32 */
WARN( "Class extra bytes %d is > 40\n", wc->cbClsExtra);
if (wc->cbWndExtra > 40) /* Extra bytes are limited to 40 in Win32 */
WARN("Win extra bytes %d is > 40\n", wc->cbWndExtra );
if (!(class = calloc( 1, sizeof(CLASS) + wc->cbClsExtra ))) return 0;
class->atomName = get_int_atom_value( name );
class->basename = class->name;
if (!class->atomName && name)
{
memcpy( class->name, name->Buffer, name->Length );
class->name[name->Length / sizeof(WCHAR)] = 0;
class->basename += version->Length / sizeof(WCHAR);
}
else
{
UNICODE_STRING str = { .MaximumLength = sizeof(class->name), .Buffer = class->name };
NtUserGetAtomName( class->atomName, &str );
}
class->style = wc->style;
class->local = !is_builtin && !(wc->style & CS_GLOBALCLASS);
class->cbWndExtra = wc->cbWndExtra;
class->cbClsExtra = wc->cbClsExtra;
class->instance = (UINT_PTR)instance;
SERVER_START_REQ( create_class )
{
req->local = class->local;
req->style = class->style;
req->instance = class->instance;
req->extra = class->cbClsExtra;
req->win_extra = class->cbWndExtra;
req->client_ptr = wine_server_client_ptr( class );
req->atom = class->atomName;
req->name_offset = version->Length / sizeof(WCHAR);
if (!req->atom && name) wine_server_add_data( req, name->Buffer, name->Length );
ret = !wine_server_call_err( req );
class->atomName = reply->atom;
}
SERVER_END_REQ;
if (!ret)
{
free( class );
return 0;
}
/* Other non-null values must be set by caller */
user_lock();
if (class->local) list_add_head( &class_list, &class->entry );
else list_add_tail( &class_list, &class->entry );
atom = class->atomName;
TRACE( "name=%s->%s atom=%04x wndproc=%p hinst=%p bg=%p style=%08x clsExt=%d winExt=%d class=%p\n",
debugstr_w(wc->lpszClassName), debugstr_us(name), atom, wc->lpfnWndProc, instance,
wc->hbrBackground, wc->style, wc->cbClsExtra, wc->cbWndExtra, class );
class->hIcon = wc->hIcon;
class->hIconSm = wc->hIconSm;
class->hCursor = wc->hCursor;
class->hbrBackground = wc->hbrBackground;
class->winproc = alloc_winproc( wc->lpfnWndProc, ansi );
class->menu_name = *client_menu_name;
if (wc->hIcon && !wc->hIconSm && user_callbacks)
class->hIconSmIntern = user_callbacks->pCopyImage( wc->hIcon, IMAGE_ICON,
get_system_metrics( SM_CXSMICON ),
get_system_metrics( SM_CYSMICON ),
LR_COPYFROMRESOURCE );
release_class_ptr( class );
return atom;
}
/***********************************************************************
* NtUserUnregisterClass (win32u.@)
*/
BOOL WINAPI NtUserUnregisterClass( UNICODE_STRING *name, HINSTANCE instance,
struct client_menu_name *client_menu_name )
{
CLASS *class = NULL;
/* create the desktop window to trigger builtin class registration */
get_desktop_window();
SERVER_START_REQ( destroy_class )
{
req->instance = wine_server_client_ptr( instance );
if (!(req->atom = get_int_atom_value( name )) && name->Length)
wine_server_add_data( req, name->Buffer, name->Length );
if (!wine_server_call_err( req )) class = wine_server_get_ptr( reply->client_ptr );
}
SERVER_END_REQ;
if (!class) return FALSE;
TRACE( "%p\n", class );
user_lock();
if (class->dce) free_dce( class->dce, 0 );
list_remove( &class->entry );
if (class->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
NtGdiDeleteObjectApp( class->hbrBackground );
*client_menu_name = class->menu_name;
NtUserDestroyCursor( class->hIconSmIntern, 0 );
free( class );
user_unlock();
return TRUE;
}
/***********************************************************************
* NtUserGetClassInfo (win32u.@)
*/
ATOM WINAPI NtUserGetClassInfoEx( HINSTANCE instance, UNICODE_STRING *name, WNDCLASSEXW *wc,
struct client_menu_name *menu_name, BOOL ansi )
{
static const WCHAR messageW[] = {'M','e','s','s','a','g','e'};
CLASS *class;
ATOM atom;
/* create the desktop window to trigger builtin class registration */
if (name->Buffer != (const WCHAR *)DESKTOP_CLASS_ATOM &&
(IS_INTRESOURCE(name->Buffer) || name->Length != sizeof(messageW) ||
wcsnicmp( name->Buffer, messageW, ARRAYSIZE(messageW) )))
get_desktop_window();
if (!(class = find_class( instance, name ))) return 0;
if (wc)
{
wc->style = class->style;
wc->lpfnWndProc = get_winproc( class->winproc, ansi );
wc->cbClsExtra = class->cbClsExtra;
wc->cbWndExtra = class->cbWndExtra;
wc->hInstance = (instance == user32_module) ? 0 : instance;
wc->hIcon = class->hIcon;
wc->hIconSm = class->hIconSm ? class->hIconSm : class->hIconSmIntern;
wc->hCursor = class->hCursor;
wc->hbrBackground = class->hbrBackground;
wc->lpszMenuName = ansi ? (const WCHAR *)class->menu_name.nameA : class->menu_name.nameW;
wc->lpszClassName = name->Buffer;
}
if (menu_name) *menu_name = class->menu_name;
atom = class->atomName;
release_class_ptr( class );
return atom;
}
/***********************************************************************
* NtUserGetAtomName (win32u.@)
*/
ULONG WINAPI NtUserGetAtomName( ATOM atom, UNICODE_STRING *name )
{
char buf[sizeof(ATOM_BASIC_INFORMATION) + MAX_ATOM_LEN * sizeof(WCHAR)];
ATOM_BASIC_INFORMATION *abi = (ATOM_BASIC_INFORMATION *)buf;
UINT size;
if (!set_ntstatus( NtQueryInformationAtom( atom, AtomBasicInformation,
buf, sizeof(buf), NULL )))
return 0;
if (name->MaximumLength < sizeof(WCHAR))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
size = min( abi->NameLength, name->MaximumLength - sizeof(WCHAR) );
if (size) memcpy( name->Buffer, abi->Name, size );
name->Buffer[size / sizeof(WCHAR)] = 0;
return size / sizeof(WCHAR);
}
/***********************************************************************
* NtUserGetClassName (win32u.@)
*/
INT WINAPI NtUserGetClassName( HWND hwnd, BOOL real, UNICODE_STRING *name )
{
CLASS *class;
int ret;
TRACE( "%p %x %p\n", hwnd, real, name );
if (name->MaximumLength <= sizeof(WCHAR))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
if (class == OBJ_OTHER_PROCESS)
{
ATOM atom = 0;
SERVER_START_REQ( set_class_info )
{
req->window = wine_server_user_handle( hwnd );
req->flags = 0;
req->extra_offset = -1;
req->extra_size = 0;
if (!wine_server_call_err( req ))
atom = reply->base_atom;
}
SERVER_END_REQ;
return NtUserGetAtomName( atom, name );
}
ret = min( name->MaximumLength / sizeof(WCHAR) - 1, lstrlenW(class->basename) );
if (ret) memcpy( name->Buffer, class->basename, ret * sizeof(WCHAR) );
name->Buffer[ret] = 0;
release_class_ptr( class );
return ret;
}
/* 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);
break;
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;
}
static ULONG_PTR set_class_long( HWND hwnd, INT offset, LONG_PTR newval, UINT size, BOOL ansi )
{
ULONG_PTR retval = 0;
CLASS *class;
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:
{
struct client_menu_name *menu_name = (void *)newval;
struct client_menu_name prev = class->menu_name;
class->menu_name = *menu_name;
*menu_name = prev;
retval = 0; /* Old value is now meaningless anyway */
break;
}
case GCLP_WNDPROC:
retval = (ULONG_PTR)get_winproc( class->winproc, ansi );
class->winproc = alloc_winproc( (WNDPROC)newval, ansi );
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;
if (class->hIconSmIntern)
{
NtUserDestroyCursor( class->hIconSmIntern, 0 );
class->hIconSmIntern = NULL;
}
if (newval && !class->hIconSm && user_callbacks)
class->hIconSmIntern = user_callbacks->pCopyImage( (HICON)newval, IMAGE_ICON,
get_system_metrics( SM_CXSMICON ),
get_system_metrics( SM_CYSMICON ),
LR_COPYFROMRESOURCE );
class->hIcon = (HICON)newval;
break;
case GCLP_HICONSM:
retval = (ULONG_PTR)class->hIconSm;
if (retval && !newval && class->hIcon && user_callbacks)
class->hIconSmIntern = user_callbacks->pCopyImage( class->hIcon, IMAGE_ICON,
get_system_metrics( SM_CXSMICON ),
get_system_metrics( SM_CYSMICON ),
LR_COPYFROMRESOURCE );
else if (newval && class->hIconSmIntern)
{
NtUserDestroyCursor( class->hIconSmIntern, 0 );
class->hIconSmIntern = NULL;
}
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 = class->instance;
class->instance = newval;
break;
case GCW_ATOM:
{
UNICODE_STRING us;
if (!set_server_info( hwnd, offset, newval, size )) break;
retval = class->atomName;
class->atomName = newval;
us.Buffer = class->name;
us.MaximumLength = sizeof(class->name);
NtUserGetAtomName( newval, &us );
}
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;
}
/***********************************************************************
* NtUserSetClassLong (win32u.@)
*/
DWORD WINAPI NtUserSetClassLong( HWND hwnd, INT offset, LONG newval, BOOL ansi )
{
return set_class_long( hwnd, offset, newval, sizeof(LONG), ansi );
}
/***********************************************************************
* NtUserSetClassLongPtr (win32u.@)
*/
ULONG_PTR WINAPI NtUserSetClassLongPtr( HWND hwnd, INT offset, LONG_PTR newval, BOOL ansi )
{
return set_class_long( hwnd, offset, newval, sizeof(LONG_PTR), ansi );
}
/***********************************************************************
* NtUserSetClassWord (win32u.@)
*/
WORD WINAPI NtUserSetClassWord( HWND hwnd, INT offset, WORD newval )
{
CLASS *class;
WORD retval = 0;
if (offset < 0) return NtUserSetClassLong( hwnd, offset, (DWORD)newval, TRUE );
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;
}
static ULONG_PTR get_class_long_size( HWND hwnd, INT offset, UINT size, BOOL ansi )
{
CLASS *class;
ULONG_PTR retvalue = 0;
if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
if (class == OBJ_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 not supported on other process window %p\n", 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 ? class->hIconSm : class->hIconSmIntern);
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 = class->instance;
break;
case GCLP_WNDPROC:
retvalue = (ULONG_PTR)get_winproc( class->winproc, ansi );
break;
case GCLP_MENUNAME:
retvalue = ansi ? (ULONG_PTR)class->menu_name.nameA : (ULONG_PTR)class->menu_name.nameW;
break;
case GCW_ATOM:
retvalue = class->atomName;
break;
default:
SetLastError( ERROR_INVALID_INDEX );
break;
}
release_class_ptr( class );
return retvalue;
}
DWORD get_class_long( HWND hwnd, INT offset, BOOL ansi )
{
return get_class_long_size( hwnd, offset, sizeof(DWORD), ansi );
}
ULONG_PTR get_class_long_ptr( HWND hwnd, INT offset, BOOL ansi )
{
return get_class_long_size( hwnd, offset, sizeof(ULONG_PTR), ansi );
}
WORD get_class_word( HWND hwnd, INT offset )
{
CLASS *class;
WORD retvalue = 0;
if (offset < 0) return get_class_long( hwnd, offset, TRUE );
if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
if (class == OBJ_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;
}
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