2 * Server-side window handling
4 * Copyright (C) 2001 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
28 #define WIN32_NO_STATUS
42 /* a window property */
45 unsigned short type
; /* property type (see below) */
46 atom_t atom
; /* property atom */
47 obj_handle_t handle
; /* property handle (user-defined storage) */
52 PROP_TYPE_FREE
, /* free entry */
53 PROP_TYPE_STRING
, /* atom that was originally a string */
54 PROP_TYPE_ATOM
/* plain atom */
60 struct window
*parent
; /* parent window */
61 user_handle_t owner
; /* owner of this window */
62 struct list children
; /* list of children in Z-order */
63 struct list unlinked
; /* list of children not linked in the Z-order list */
64 struct list entry
; /* entry in parent's children list */
65 user_handle_t handle
; /* full handle for this window */
66 struct thread
*thread
; /* thread owning the window */
67 struct desktop
*desktop
; /* desktop that the window belongs to */
68 struct window_class
*class; /* window class */
69 atom_t atom
; /* class atom */
70 user_handle_t last_active
; /* last active popup */
71 rectangle_t window_rect
; /* window rectangle (relative to parent client area) */
72 rectangle_t visible_rect
; /* visible part of window rect (relative to parent client area) */
73 rectangle_t client_rect
; /* client rectangle (relative to parent client area) */
74 struct region
*win_region
; /* region for shaped windows (relative to window rect) */
75 struct region
*update_region
; /* update region (relative to window rect) */
76 unsigned int style
; /* window style */
77 unsigned int ex_style
; /* window extended style */
78 unsigned int id
; /* window id */
79 void* instance
; /* creator instance */
80 unsigned int is_unicode
: 1; /* ANSI or unicode */
81 unsigned int is_linked
: 1; /* is it linked into the parent z-order list? */
82 unsigned long user_data
; /* user-specific data */
83 WCHAR
*text
; /* window caption text */
84 unsigned int paint_flags
; /* various painting flags */
85 int prop_inuse
; /* number of in-use window properties */
86 int prop_alloc
; /* number of allocated window properties */
87 struct property
*properties
; /* window properties array */
88 int nb_extra_bytes
; /* number of extra bytes */
89 char extra_bytes
[1]; /* extra bytes storage */
92 #define PAINT_INTERNAL 0x01 /* internal WM_PAINT pending */
93 #define PAINT_ERASE 0x02 /* needs WM_ERASEBKGND */
94 #define PAINT_NONCLIENT 0x04 /* needs WM_NCPAINT */
95 #define PAINT_DELAYED_ERASE 0x08 /* still needs erase after WM_ERASEBKGND */
97 /* growable array of user handles */
98 struct user_handle_array
100 user_handle_t
*handles
;
105 /* global window pointers */
106 static struct window
*shell_window
;
107 static struct window
*shell_listview
;
108 static struct window
*progman_window
;
109 static struct window
*taskman_window
;
111 /* magic HWND_TOP etc. pointers */
112 #define WINPTR_TOP ((struct window *)1L)
113 #define WINPTR_BOTTOM ((struct window *)2L)
114 #define WINPTR_TOPMOST ((struct window *)3L)
115 #define WINPTR_NOTOPMOST ((struct window *)4L)
117 /* retrieve a pointer to a window from its handle */
118 static inline struct window
*get_window( user_handle_t handle
)
120 struct window
*ret
= get_user_object( handle
, USER_WINDOW
);
121 if (!ret
) set_win32_error( ERROR_INVALID_WINDOW_HANDLE
);
125 /* check if window is the desktop */
126 static inline int is_desktop_window( const struct window
*win
)
128 return !win
->parent
; /* only desktop windows have no parent */
131 /* get next window in Z-order list */
132 static inline struct window
*get_next_window( struct window
*win
)
134 struct list
*ptr
= list_next( &win
->parent
->children
, &win
->entry
);
135 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
138 /* get previous window in Z-order list */
139 static inline struct window
*get_prev_window( struct window
*win
)
141 struct list
*ptr
= list_prev( &win
->parent
->children
, &win
->entry
);
142 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
145 /* get first child in Z-order list */
146 static inline struct window
*get_first_child( struct window
*win
)
148 struct list
*ptr
= list_head( &win
->children
);
149 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
152 /* get last child in Z-order list */
153 static inline struct window
*get_last_child( struct window
*win
)
155 struct list
*ptr
= list_tail( &win
->children
);
156 return ptr
? LIST_ENTRY( ptr
, struct window
, entry
) : NULL
;
159 /* link a window at the right place in the siblings list */
160 static void link_window( struct window
*win
, struct window
*previous
)
162 if (previous
== WINPTR_NOTOPMOST
)
164 if (!(win
->ex_style
& WS_EX_TOPMOST
) && win
->is_linked
) return; /* nothing to do */
165 win
->ex_style
&= ~WS_EX_TOPMOST
;
166 previous
= WINPTR_TOP
; /* fallback to the HWND_TOP case */
169 list_remove( &win
->entry
); /* unlink it from the previous location */
171 if (previous
== WINPTR_BOTTOM
)
173 list_add_tail( &win
->parent
->children
, &win
->entry
);
174 win
->ex_style
&= ~WS_EX_TOPMOST
;
176 else if (previous
== WINPTR_TOPMOST
)
178 list_add_head( &win
->parent
->children
, &win
->entry
);
179 win
->ex_style
|= WS_EX_TOPMOST
;
181 else if (previous
== WINPTR_TOP
)
183 struct list
*entry
= win
->parent
->children
.next
;
184 if (!(win
->ex_style
& WS_EX_TOPMOST
)) /* put it above the first non-topmost window */
186 while (entry
!= &win
->parent
->children
&&
187 LIST_ENTRY( entry
, struct window
, entry
)->ex_style
& WS_EX_TOPMOST
)
190 list_add_before( entry
, &win
->entry
);
194 list_add_after( &previous
->entry
, &win
->entry
);
195 if (!(previous
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
&= ~WS_EX_TOPMOST
;
198 struct window
*next
= get_next_window( win
);
199 if (next
&& (next
->ex_style
& WS_EX_TOPMOST
)) win
->ex_style
|= WS_EX_TOPMOST
;
206 /* change the parent of a window (or unlink the window if the new parent is NULL) */
207 static int set_parent_window( struct window
*win
, struct window
*parent
)
211 /* make sure parent is not a child of window */
212 for (ptr
= parent
; ptr
; ptr
= ptr
->parent
)
216 set_error( STATUS_INVALID_PARAMETER
);
223 win
->parent
= parent
;
224 link_window( win
, WINPTR_TOP
);
226 /* if parent belongs to a different thread and the window isn't */
227 /* top-level, attach the two threads */
228 if (parent
->thread
&& parent
->thread
!= win
->thread
&& !is_desktop_window(parent
))
229 attach_thread_input( win
->thread
, parent
->thread
);
231 else /* move it to parent unlinked list */
233 list_remove( &win
->entry
); /* unlink it from the previous location */
234 list_add_head( &win
->parent
->unlinked
, &win
->entry
);
240 /* append a user handle to a handle array */
241 static int add_handle_to_array( struct user_handle_array
*array
, user_handle_t handle
)
243 if (array
->count
>= array
->total
)
245 int new_total
= max( array
->total
* 2, 32 );
246 user_handle_t
*new_array
= realloc( array
->handles
, new_total
* sizeof(*new_array
) );
249 free( array
->handles
);
250 set_error( STATUS_NO_MEMORY
);
253 array
->handles
= new_array
;
254 array
->total
= new_total
;
256 array
->handles
[array
->count
++] = handle
;
260 /* set a window property */
261 static void set_property( struct window
*win
, atom_t atom
, obj_handle_t handle
, enum property_type type
)
264 struct property
*new_props
;
266 /* check if it exists already */
267 for (i
= 0; i
< win
->prop_inuse
; i
++)
269 if (win
->properties
[i
].type
== PROP_TYPE_FREE
)
274 if (win
->properties
[i
].atom
== atom
)
276 win
->properties
[i
].type
= type
;
277 win
->properties
[i
].handle
= handle
;
282 /* need to add an entry */
283 if (!grab_global_atom( NULL
, atom
)) return;
287 if (win
->prop_inuse
>= win
->prop_alloc
)
289 /* need to grow the array */
290 if (!(new_props
= realloc( win
->properties
,
291 sizeof(*new_props
) * (win
->prop_alloc
+ 16) )))
293 set_error( STATUS_NO_MEMORY
);
294 release_global_atom( NULL
, atom
);
297 win
->prop_alloc
+= 16;
298 win
->properties
= new_props
;
300 free
= win
->prop_inuse
++;
302 win
->properties
[free
].atom
= atom
;
303 win
->properties
[free
].type
= type
;
304 win
->properties
[free
].handle
= handle
;
307 /* remove a window property */
308 static obj_handle_t
remove_property( struct window
*win
, atom_t atom
)
312 for (i
= 0; i
< win
->prop_inuse
; i
++)
314 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
315 if (win
->properties
[i
].atom
== atom
)
317 release_global_atom( NULL
, atom
);
318 win
->properties
[i
].type
= PROP_TYPE_FREE
;
319 return win
->properties
[i
].handle
;
322 /* FIXME: last error? */
326 /* find a window property */
327 static obj_handle_t
get_property( struct window
*win
, atom_t atom
)
331 for (i
= 0; i
< win
->prop_inuse
; i
++)
333 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
334 if (win
->properties
[i
].atom
== atom
) return win
->properties
[i
].handle
;
336 /* FIXME: last error? */
340 /* destroy all properties of a window */
341 static inline void destroy_properties( struct window
*win
)
345 if (!win
->properties
) return;
346 for (i
= 0; i
< win
->prop_inuse
; i
++)
348 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
349 release_global_atom( NULL
, win
->properties
[i
].atom
);
351 free( win
->properties
);
354 /* detach a window from its owner thread but keep the window around */
355 static void detach_window_thread( struct window
*win
)
357 struct thread
*thread
= win
->thread
;
362 if (win
->update_region
) inc_queue_paint_count( thread
, -1 );
363 if (win
->paint_flags
& PAINT_INTERNAL
) inc_queue_paint_count( thread
, -1 );
364 queue_cleanup_window( thread
, win
->handle
);
366 assert( thread
->desktop_users
> 0 );
367 thread
->desktop_users
--;
368 release_class( win
->class );
371 /* don't hold a reference to the desktop so that the desktop window can be */
372 /* destroyed when the desktop ref count reaches zero */
373 release_object( win
->desktop
);
377 /* destroy a window */
378 void destroy_window( struct window
*win
)
380 /* destroy all children */
381 while (!list_empty(&win
->children
))
382 destroy_window( LIST_ENTRY( list_head(&win
->children
), struct window
, entry
));
383 while (!list_empty(&win
->unlinked
))
384 destroy_window( LIST_ENTRY( list_head(&win
->unlinked
), struct window
, entry
));
386 /* reset global window pointers, if the corresponding window is destroyed */
387 if (win
== shell_window
) shell_window
= NULL
;
388 if (win
== shell_listview
) shell_listview
= NULL
;
389 if (win
== progman_window
) progman_window
= NULL
;
390 if (win
== taskman_window
) taskman_window
= NULL
;
391 free_user_handle( win
->handle
);
392 destroy_properties( win
);
393 list_remove( &win
->entry
);
394 if (is_desktop_window(win
))
396 assert( win
->desktop
->top_window
== win
);
397 win
->desktop
->top_window
= NULL
;
399 detach_window_thread( win
);
400 if (win
->win_region
) free_region( win
->win_region
);
401 if (win
->update_region
) free_region( win
->update_region
);
402 if (win
->class) release_class( win
->class );
404 memset( win
, 0x55, sizeof(*win
) + win
->nb_extra_bytes
- 1 );
408 /* get the process owning the top window of a given desktop */
409 struct process
*get_top_window_owner( struct desktop
*desktop
)
411 struct window
*win
= desktop
->top_window
;
412 if (!win
|| !win
->thread
) return NULL
;
413 return win
->thread
->process
;
416 /* attempt to close the desktop window when the last process using it is gone */
417 void close_desktop_window( struct desktop
*desktop
)
419 struct window
*win
= desktop
->top_window
;
420 if (win
&& win
->thread
) post_message( win
->handle
, WM_CLOSE
, 0, 0 );
423 /* create a new window structure (note: the window is not linked in the window tree) */
424 static struct window
*create_window( struct window
*parent
, struct window
*owner
,
425 atom_t atom
, void *instance
)
429 struct desktop
*desktop
;
430 struct window_class
*class;
432 if (!(desktop
= get_thread_desktop( current
, DESKTOP_CREATEWINDOW
))) return NULL
;
434 if (!(class = grab_class( current
->process
, atom
, instance
, &extra_bytes
)))
436 release_object( desktop
);
440 if (!(win
= mem_alloc( sizeof(*win
) + extra_bytes
- 1 ))) goto failed
;
441 if (!(win
->handle
= alloc_user_handle( win
, USER_WINDOW
))) goto failed
;
443 win
->parent
= parent
;
444 win
->owner
= owner
? owner
->handle
: 0;
445 win
->thread
= current
;
446 win
->desktop
= desktop
;
449 win
->last_active
= win
->handle
;
450 win
->win_region
= NULL
;
451 win
->update_region
= NULL
;
455 win
->instance
= NULL
;
460 win
->paint_flags
= 0;
463 win
->properties
= NULL
;
464 win
->nb_extra_bytes
= extra_bytes
;
465 memset( win
->extra_bytes
, 0, extra_bytes
);
466 list_init( &win
->children
);
467 list_init( &win
->unlinked
);
469 /* parent must be on the same desktop */
470 if (parent
&& parent
->desktop
!= desktop
)
472 set_error( STATUS_ACCESS_DENIED
);
476 /* if no parent, class must be the desktop */
477 if (!parent
&& !is_desktop_class( class ))
479 set_error( STATUS_ACCESS_DENIED
);
483 /* if parent belongs to a different thread and the window isn't */
484 /* top-level, attach the two threads */
485 if (parent
&& parent
->thread
&& parent
->thread
!= current
&& !is_desktop_window(parent
))
487 if (!attach_thread_input( current
, parent
->thread
)) goto failed
;
489 else /* otherwise just make sure that the thread has a message queue */
491 if (!current
->queue
&& !init_thread_queue( current
)) goto failed
;
494 /* put it on parent unlinked list */
495 if (parent
) list_add_head( &parent
->unlinked
, &win
->entry
);
498 list_init( &win
->entry
);
499 assert( !desktop
->top_window
);
500 desktop
->top_window
= win
;
501 set_process_default_desktop( current
->process
, desktop
, current
->desktop
);
504 current
->desktop_users
++;
510 if (win
->handle
) free_user_handle( win
->handle
);
513 release_object( desktop
);
514 release_class( class );
518 /* destroy all windows belonging to a given thread */
519 void destroy_thread_windows( struct thread
*thread
)
521 user_handle_t handle
= 0;
524 while ((win
= next_user_handle( &handle
, USER_WINDOW
)))
526 if (win
->thread
!= thread
) continue;
527 if (is_desktop_window( win
)) detach_window_thread( win
);
528 else destroy_window( win
);
532 /* get the desktop window */
533 static struct window
*get_desktop_window( struct thread
*thread
, int create
)
535 struct window
*top_window
;
536 struct desktop
*desktop
= get_thread_desktop( thread
, 0 );
538 if (!desktop
) return NULL
;
540 if (!(top_window
= desktop
->top_window
) && create
)
542 if ((top_window
= create_window( NULL
, NULL
, DESKTOP_ATOM
, 0 )))
544 detach_window_thread( top_window
);
545 top_window
->style
= WS_POPUP
| WS_VISIBLE
| WS_CLIPSIBLINGS
| WS_CLIPCHILDREN
;
548 release_object( desktop
);
552 /* check whether child is a descendant of parent */
553 int is_child_window( user_handle_t parent
, user_handle_t child
)
555 struct window
*child_ptr
= get_user_object( child
, USER_WINDOW
);
556 struct window
*parent_ptr
= get_user_object( parent
, USER_WINDOW
);
558 if (!child_ptr
|| !parent_ptr
) return 0;
559 while (child_ptr
->parent
)
561 if (child_ptr
->parent
== parent_ptr
) return 1;
562 child_ptr
= child_ptr
->parent
;
567 /* check whether window is a top-level window */
568 int is_top_level_window( user_handle_t window
)
570 struct window
*win
= get_user_object( window
, USER_WINDOW
);
572 /* set to 1 to not loose focus (e.g. when playing a game
573 * in virtual desktop mode) */
574 #define NOFOCUSLOSS 0
577 return (win
&& win
->parent
&& is_desktop_window(win
->parent
));
579 return (win
&& (is_desktop_window(win
) || is_desktop_window(win
->parent
)));
582 /* make a window active if possible */
583 int make_window_active( user_handle_t window
)
585 struct window
*owner
, *win
= get_window( window
);
589 /* set last active for window and its owner */
590 win
->last_active
= win
->handle
;
591 if ((owner
= get_user_object( win
->owner
, USER_WINDOW
))) owner
->last_active
= win
->handle
;
595 /* increment (or decrement) the window paint count */
596 static inline void inc_window_paint_count( struct window
*win
, int incr
)
598 if (win
->thread
) inc_queue_paint_count( win
->thread
, incr
);
601 /* check if window and all its ancestors are visible */
602 static int is_visible( const struct window
*win
)
604 while (win
&& win
->parent
)
606 if (!(win
->style
& WS_VISIBLE
)) return 0;
608 /* if parent is minimized children are not visible */
609 if (win
&& (win
->style
& WS_MINIMIZE
)) return 0;
614 /* same as is_visible but takes a window handle */
615 int is_window_visible( user_handle_t window
)
617 struct window
*win
= get_user_object( window
, USER_WINDOW
);
619 return is_visible( win
);
622 /* check if point is inside the window */
623 static inline int is_point_in_window( struct window
*win
, int x
, int y
)
625 if (!(win
->style
& WS_VISIBLE
)) return 0; /* not visible */
626 if ((win
->style
& (WS_POPUP
|WS_CHILD
|WS_DISABLED
)) == (WS_CHILD
|WS_DISABLED
))
627 return 0; /* disabled child */
628 if ((win
->ex_style
& (WS_EX_LAYERED
|WS_EX_TRANSPARENT
)) == (WS_EX_LAYERED
|WS_EX_TRANSPARENT
))
629 return 0; /* transparent */
630 if (x
< win
->visible_rect
.left
|| x
>= win
->visible_rect
.right
||
631 y
< win
->visible_rect
.top
|| y
>= win
->visible_rect
.bottom
)
632 return 0; /* not in window */
633 if (win
->win_region
&&
634 !point_in_region( win
->win_region
, x
- win
->window_rect
.left
, y
- win
->window_rect
.top
))
635 return 0; /* not in window region */
639 /* find child of 'parent' that contains the given point (in parent-relative coords) */
640 static struct window
*child_window_from_point( struct window
*parent
, int x
, int y
)
644 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
646 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
648 /* if window is minimized or disabled, return at once */
649 if (ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) return ptr
;
651 /* if point is not in client area, return at once */
652 if (x
< ptr
->client_rect
.left
|| x
>= ptr
->client_rect
.right
||
653 y
< ptr
->client_rect
.top
|| y
>= ptr
->client_rect
.bottom
)
656 return child_window_from_point( ptr
, x
- ptr
->client_rect
.left
, y
- ptr
->client_rect
.top
);
658 return parent
; /* not found any child */
661 /* find all children of 'parent' that contain the given point */
662 static int get_window_children_from_point( struct window
*parent
, int x
, int y
,
663 struct user_handle_array
*array
)
667 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
669 if (!is_point_in_window( ptr
, x
, y
)) continue; /* skip it */
671 /* if point is in client area, and window is not minimized or disabled, check children */
672 if (!(ptr
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
673 x
>= ptr
->client_rect
.left
&& x
< ptr
->client_rect
.right
&&
674 y
>= ptr
->client_rect
.top
&& y
< ptr
->client_rect
.bottom
)
676 if (!get_window_children_from_point( ptr
, x
- ptr
->client_rect
.left
,
677 y
- ptr
->client_rect
.top
, array
))
681 /* now add window to the array */
682 if (!add_handle_to_array( array
, ptr
->handle
)) return 0;
687 /* find window containing point (in absolute coords) */
688 user_handle_t
window_from_point( struct desktop
*desktop
, int x
, int y
)
692 if (!desktop
->top_window
) return 0;
693 ret
= child_window_from_point( desktop
->top_window
, x
, y
);
697 /* return list of all windows containing point (in absolute coords) */
698 static int all_windows_from_point( struct window
*top
, int x
, int y
, struct user_handle_array
*array
)
702 /* make point relative to top window */
703 for (ptr
= top
->parent
; ptr
&& !is_desktop_window(ptr
); ptr
= ptr
->parent
)
705 x
-= ptr
->client_rect
.left
;
706 y
-= ptr
->client_rect
.top
;
709 if (!is_point_in_window( top
, x
, y
)) return 1;
711 /* if point is in client area, and window is not minimized or disabled, check children */
712 if (!(top
->style
& (WS_MINIMIZE
|WS_DISABLED
)) &&
713 x
>= top
->client_rect
.left
&& x
< top
->client_rect
.right
&&
714 y
>= top
->client_rect
.top
&& y
< top
->client_rect
.bottom
)
716 if (!is_desktop_window(top
))
718 x
-= top
->client_rect
.left
;
719 y
-= top
->client_rect
.top
;
721 if (!get_window_children_from_point( top
, x
, y
, array
)) return 0;
723 /* now add window to the array */
724 if (!add_handle_to_array( array
, top
->handle
)) return 0;
729 /* return the thread owning a window */
730 struct thread
*get_window_thread( user_handle_t handle
)
732 struct window
*win
= get_user_object( handle
, USER_WINDOW
);
733 if (!win
|| !win
->thread
) return NULL
;
734 return (struct thread
*)grab_object( win
->thread
);
738 /* check if any area of a window needs repainting */
739 static inline int win_needs_repaint( struct window
*win
)
741 return win
->update_region
|| (win
->paint_flags
& PAINT_INTERNAL
);
745 /* find a child of the specified window that needs repainting */
746 static struct window
*find_child_to_repaint( struct window
*parent
, struct thread
*thread
)
748 struct window
*ptr
, *ret
= NULL
;
750 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
752 if (!(ptr
->style
& WS_VISIBLE
)) continue;
753 if (ptr
->thread
== thread
&& win_needs_repaint( ptr
))
755 else if (!(ptr
->style
& WS_MINIMIZE
)) /* explore its children */
756 ret
= find_child_to_repaint( ptr
, thread
);
760 if (ret
&& (ret
->ex_style
& WS_EX_TRANSPARENT
))
762 /* transparent window, check for non-transparent sibling to paint first */
763 for (ptr
= get_next_window(ret
); ptr
; ptr
= get_next_window(ptr
))
765 if (!(ptr
->style
& WS_VISIBLE
)) continue;
766 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
767 if (ptr
->thread
!= thread
) continue;
768 if (win_needs_repaint( ptr
)) return ptr
;
775 /* find a window that needs to receive a WM_PAINT; also clear its internal paint flag */
776 user_handle_t
find_window_to_repaint( user_handle_t parent
, struct thread
*thread
)
778 struct window
*ptr
, *win
, *top_window
= get_desktop_window( thread
, 0 );
780 if (!top_window
) return 0;
782 if (top_window
->thread
== thread
&& win_needs_repaint( top_window
)) win
= top_window
;
783 else win
= find_child_to_repaint( top_window
, thread
);
787 /* check that it is a child of the specified parent */
788 for (ptr
= win
; ptr
; ptr
= ptr
->parent
)
789 if (ptr
->handle
== parent
) break;
790 /* otherwise don't return any window, we don't repaint a child before its parent */
791 if (!ptr
) win
= NULL
;
794 win
->paint_flags
&= ~PAINT_INTERNAL
;
799 /* intersect the window region with the specified region, relative to the window parent */
800 static struct region
*intersect_window_region( struct region
*region
, struct window
*win
)
802 /* make region relative to window rect */
803 offset_region( region
, -win
->window_rect
.left
, -win
->window_rect
.top
);
804 if (!intersect_region( region
, region
, win
->win_region
)) return NULL
;
805 /* make region relative to parent again */
806 offset_region( region
, win
->window_rect
.left
, win
->window_rect
.top
);
811 /* convert coordinates from client to screen coords */
812 static inline void client_to_screen( struct window
*win
, int *x
, int *y
)
814 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
816 *x
+= win
->client_rect
.left
;
817 *y
+= win
->client_rect
.top
;
821 /* convert coordinates from client to screen coords */
822 static inline void client_to_screen_rect( struct window
*win
, rectangle_t
*rect
)
824 for ( ; win
&& !is_desktop_window(win
); win
= win
->parent
)
826 rect
->left
+= win
->client_rect
.left
;
827 rect
->right
+= win
->client_rect
.left
;
828 rect
->top
+= win
->client_rect
.top
;
829 rect
->bottom
+= win
->client_rect
.top
;
833 /* map the region from window to screen coordinates */
834 static inline void map_win_region_to_screen( struct window
*win
, struct region
*region
)
836 if (!is_desktop_window(win
))
838 int x
= win
->window_rect
.left
;
839 int y
= win
->window_rect
.top
;
840 client_to_screen( win
->parent
, &x
, &y
);
841 offset_region( region
, x
, y
);
846 /* clip all children of a given window out of the visible region */
847 static struct region
*clip_children( struct window
*parent
, struct window
*last
,
848 struct region
*region
, int offset_x
, int offset_y
)
851 struct region
*tmp
= create_empty_region();
853 if (!tmp
) return NULL
;
854 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
856 if (ptr
== last
) break;
857 if (!(ptr
->style
& WS_VISIBLE
)) continue;
858 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
859 set_region_rect( tmp
, &ptr
->visible_rect
);
860 if (ptr
->win_region
&& !intersect_window_region( tmp
, ptr
))
865 offset_region( tmp
, offset_x
, offset_y
);
866 if (!(region
= subtract_region( region
, region
, tmp
))) break;
867 if (is_region_empty( region
)) break;
874 /* compute the intersection of two rectangles; return 0 if the result is empty */
875 static inline int intersect_rect( rectangle_t
*dst
, const rectangle_t
*src1
, const rectangle_t
*src2
)
877 dst
->left
= max( src1
->left
, src2
->left
);
878 dst
->top
= max( src1
->top
, src2
->top
);
879 dst
->right
= min( src1
->right
, src2
->right
);
880 dst
->bottom
= min( src1
->bottom
, src2
->bottom
);
881 return (dst
->left
< dst
->right
&& dst
->top
< dst
->bottom
);
885 /* set the region to the client rect clipped by the window rect, in parent-relative coordinates */
886 static void set_region_client_rect( struct region
*region
, struct window
*win
)
890 intersect_rect( &rect
, &win
->window_rect
, &win
->client_rect
);
891 set_region_rect( region
, &rect
);
895 /* get the top-level window to clip against for a given window */
896 static inline struct window
*get_top_clipping_window( struct window
*win
)
898 while (win
->parent
&& !is_desktop_window(win
->parent
)) win
= win
->parent
;
903 /* compute the visible region of a window, in window coordinates */
904 static struct region
*get_visible_region( struct window
*win
, unsigned int flags
)
906 struct region
*tmp
= NULL
, *region
;
907 int offset_x
, offset_y
;
909 if (!(region
= create_empty_region())) return NULL
;
911 /* first check if all ancestors are visible */
913 if (!is_visible( win
)) return region
; /* empty region */
915 /* create a region relative to the window itself */
917 if ((flags
& DCX_PARENTCLIP
) && win
->parent
&& !is_desktop_window(win
->parent
))
919 set_region_client_rect( region
, win
->parent
);
920 offset_region( region
, -win
->parent
->client_rect
.left
, -win
->parent
->client_rect
.top
);
922 else if (flags
& DCX_WINDOW
)
924 set_region_rect( region
, &win
->visible_rect
);
925 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
929 set_region_client_rect( region
, win
);
930 if (win
->win_region
&& !intersect_window_region( region
, win
)) goto error
;
935 if (flags
& DCX_CLIPCHILDREN
)
937 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
940 offset_x
= win
->client_rect
.left
;
941 offset_y
= win
->client_rect
.top
;
943 if (!clip_children( win
, NULL
, region
, offset_x
, offset_y
)) goto error
;
946 /* clip siblings of ancestors */
948 if (is_desktop_window(win
)) offset_x
= offset_y
= 0;
951 offset_x
= win
->window_rect
.left
;
952 offset_y
= win
->window_rect
.top
;
955 if ((tmp
= create_empty_region()) != NULL
)
959 /* we don't clip out top-level siblings as that's up to the native windowing system */
960 if ((win
->style
& WS_CLIPSIBLINGS
) && !is_desktop_window( win
->parent
))
962 if (!clip_children( win
->parent
, win
, region
, 0, 0 )) goto error
;
963 if (is_region_empty( region
)) break;
965 /* clip to parent client area */
967 if (!is_desktop_window(win
))
969 offset_x
+= win
->client_rect
.left
;
970 offset_y
+= win
->client_rect
.top
;
971 offset_region( region
, win
->client_rect
.left
, win
->client_rect
.top
);
973 set_region_client_rect( tmp
, win
);
974 if (win
->win_region
&& !intersect_window_region( tmp
, win
)) goto error
;
975 if (!intersect_region( region
, region
, tmp
)) goto error
;
976 if (is_region_empty( region
)) break;
980 offset_region( region
, -offset_x
, -offset_y
); /* make it relative to target window */
984 if (tmp
) free_region( tmp
);
985 free_region( region
);
990 /* get the window class of a window */
991 struct window_class
* get_window_class( user_handle_t window
)
994 if (!(win
= get_window( window
))) return NULL
;
995 if (!win
->class) set_error( STATUS_ACCESS_DENIED
);
999 /* return a copy of the specified region cropped to the window client or frame rectangle, */
1000 /* and converted from client to window coordinates. Helper for (in)validate_window. */
1001 static struct region
*crop_region_to_win_rect( struct window
*win
, struct region
*region
, int frame
)
1003 struct region
*tmp
= create_empty_region();
1005 if (!tmp
) return NULL
;
1007 /* get bounding rect in client coords */
1008 if (frame
) set_region_rect( tmp
, &win
->window_rect
);
1009 else set_region_client_rect( tmp
, win
);
1010 if (!is_desktop_window(win
))
1011 offset_region( tmp
, -win
->client_rect
.left
, -win
->client_rect
.top
);
1013 /* intersect specified region with bounding rect */
1014 if (region
&& !intersect_region( tmp
, region
, tmp
)) goto done
;
1015 if (is_region_empty( tmp
)) goto done
;
1017 /* map it to window coords */
1018 offset_region( tmp
, win
->client_rect
.left
- win
->window_rect
.left
,
1019 win
->client_rect
.top
- win
->window_rect
.top
);
1028 /* set a region as new update region for the window */
1029 static void set_update_region( struct window
*win
, struct region
*region
)
1031 if (region
&& !is_region_empty( region
))
1033 if (!win
->update_region
) inc_window_paint_count( win
, 1 );
1034 else free_region( win
->update_region
);
1035 win
->update_region
= region
;
1039 if (win
->update_region
)
1041 inc_window_paint_count( win
, -1 );
1042 free_region( win
->update_region
);
1044 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
| PAINT_NONCLIENT
);
1045 win
->update_region
= NULL
;
1046 if (region
) free_region( region
);
1051 /* add a region to the update region; the passed region is freed or reused */
1052 static int add_update_region( struct window
*win
, struct region
*region
)
1054 if (win
->update_region
&& !union_region( region
, win
->update_region
, region
))
1056 free_region( region
);
1059 set_update_region( win
, region
);
1064 /* validate the non client area of a window */
1065 static void validate_non_client( struct window
*win
)
1070 if (!win
->update_region
) return; /* nothing to do */
1072 /* get client rect in window coords */
1073 rect
.left
= win
->client_rect
.left
- win
->window_rect
.left
;
1074 rect
.top
= win
->client_rect
.top
- win
->window_rect
.top
;
1075 rect
.right
= win
->client_rect
.right
- win
->window_rect
.left
;
1076 rect
.bottom
= win
->client_rect
.bottom
- win
->window_rect
.top
;
1078 if ((tmp
= create_empty_region()))
1080 set_region_rect( tmp
, &rect
);
1081 if (intersect_region( tmp
, win
->update_region
, tmp
))
1082 set_update_region( win
, tmp
);
1086 win
->paint_flags
&= ~PAINT_NONCLIENT
;
1090 /* validate a window completely so that we don't get any further paint messages for it */
1091 static void validate_whole_window( struct window
*win
)
1093 set_update_region( win
, NULL
);
1095 if (win
->paint_flags
& PAINT_INTERNAL
)
1097 win
->paint_flags
&= ~PAINT_INTERNAL
;
1098 inc_window_paint_count( win
, -1 );
1103 /* validate a window's children so that we don't get any further paint messages for it */
1104 static void validate_children( struct window
*win
)
1106 struct window
*child
;
1108 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1110 if (!(child
->style
& WS_VISIBLE
)) continue;
1111 validate_children(child
);
1112 validate_whole_window(child
);
1117 /* validate the update region of a window on all parents; helper for get_update_region */
1118 static void validate_parents( struct window
*child
)
1120 int offset_x
= 0, offset_y
= 0;
1121 struct window
*win
= child
;
1122 struct region
*tmp
= NULL
;
1124 if (!child
->update_region
) return;
1128 /* map to parent client coords */
1129 offset_x
+= win
->window_rect
.left
;
1130 offset_y
+= win
->window_rect
.top
;
1134 /* and now map to window coords */
1135 offset_x
+= win
->client_rect
.left
- win
->window_rect
.left
;
1136 offset_y
+= win
->client_rect
.top
- win
->window_rect
.top
;
1138 if (win
->update_region
&& !(win
->style
& WS_CLIPCHILDREN
))
1140 if (!tmp
&& !(tmp
= create_empty_region())) return;
1141 offset_region( child
->update_region
, offset_x
, offset_y
);
1142 if (subtract_region( tmp
, win
->update_region
, child
->update_region
))
1144 set_update_region( win
, tmp
);
1147 /* restore child coords */
1148 offset_region( child
->update_region
, -offset_x
, -offset_y
);
1151 if (tmp
) free_region( tmp
);
1155 /* add/subtract a region (in client coordinates) to the update region of the window */
1156 static void redraw_window( struct window
*win
, struct region
*region
, int frame
, unsigned int flags
)
1159 struct window
*child
;
1161 if (flags
& RDW_INVALIDATE
)
1163 if (!(tmp
= crop_region_to_win_rect( win
, region
, frame
))) return;
1165 if (!add_update_region( win
, tmp
)) return;
1167 if (flags
& RDW_FRAME
) win
->paint_flags
|= PAINT_NONCLIENT
;
1168 if (flags
& RDW_ERASE
) win
->paint_flags
|= PAINT_ERASE
;
1170 else if (flags
& RDW_VALIDATE
)
1172 if (!region
&& (flags
& RDW_NOFRAME
)) /* shortcut: validate everything */
1174 set_update_region( win
, NULL
);
1176 else if (win
->update_region
)
1178 if ((tmp
= crop_region_to_win_rect( win
, region
, frame
)))
1180 if (!subtract_region( tmp
, win
->update_region
, tmp
))
1185 set_update_region( win
, tmp
);
1187 if (flags
& RDW_NOFRAME
) validate_non_client( win
);
1188 if (flags
& RDW_NOERASE
) win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
1192 if ((flags
& RDW_INTERNALPAINT
) && !(win
->paint_flags
& PAINT_INTERNAL
))
1194 win
->paint_flags
|= PAINT_INTERNAL
;
1195 inc_window_paint_count( win
, 1 );
1197 else if ((flags
& RDW_NOINTERNALPAINT
) && (win
->paint_flags
& PAINT_INTERNAL
))
1199 win
->paint_flags
&= ~PAINT_INTERNAL
;
1200 inc_window_paint_count( win
, -1 );
1203 /* now process children recursively */
1205 if (flags
& RDW_NOCHILDREN
) return;
1206 if (win
->style
& WS_MINIMIZE
) return;
1207 if ((win
->style
& WS_CLIPCHILDREN
) && !(flags
& RDW_ALLCHILDREN
)) return;
1209 if (!(tmp
= crop_region_to_win_rect( win
, region
, 0 ))) return;
1211 /* map to client coordinates */
1212 offset_region( tmp
, win
->window_rect
.left
- win
->client_rect
.left
,
1213 win
->window_rect
.top
- win
->client_rect
.top
);
1215 if (flags
& RDW_INVALIDATE
) flags
|= RDW_FRAME
| RDW_ERASE
;
1217 LIST_FOR_EACH_ENTRY( child
, &win
->children
, struct window
, entry
)
1219 if (!(child
->style
& WS_VISIBLE
)) continue;
1220 if (!rect_in_region( tmp
, &child
->window_rect
)) continue;
1221 offset_region( tmp
, -child
->client_rect
.left
, -child
->client_rect
.top
);
1222 redraw_window( child
, tmp
, 1, flags
);
1223 offset_region( tmp
, child
->client_rect
.left
, child
->client_rect
.top
);
1229 /* retrieve the update flags for a window depending on the state of the update region */
1230 static unsigned int get_update_flags( struct window
*win
, unsigned int flags
)
1232 unsigned int ret
= 0;
1234 if (flags
& UPDATE_NONCLIENT
)
1236 if ((win
->paint_flags
& PAINT_NONCLIENT
) && win
->update_region
) ret
|= UPDATE_NONCLIENT
;
1238 if (flags
& UPDATE_ERASE
)
1240 if ((win
->paint_flags
& PAINT_ERASE
) && win
->update_region
) ret
|= UPDATE_ERASE
;
1242 if (flags
& UPDATE_PAINT
)
1244 if (win
->update_region
)
1246 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1247 ret
|= UPDATE_PAINT
;
1250 if (flags
& UPDATE_INTERNALPAINT
)
1252 if (win
->paint_flags
& PAINT_INTERNAL
)
1254 ret
|= UPDATE_INTERNALPAINT
;
1255 if (win
->paint_flags
& PAINT_DELAYED_ERASE
) ret
|= UPDATE_DELAYED_ERASE
;
1262 /* iterate through the children of the given window until we find one with some update flags */
1263 static unsigned int get_child_update_flags( struct window
*win
, struct window
*from_child
,
1264 unsigned int flags
, struct window
**child
)
1267 unsigned int ret
= 0;
1269 /* first make sure we want to iterate children at all */
1271 if (win
->style
& WS_MINIMIZE
) return 0;
1273 /* note: the WS_CLIPCHILDREN test is the opposite of the invalidation case,
1274 * here we only want to repaint children of windows that clip them, others
1275 * need to wait for WM_PAINT to be done in the parent first.
1277 if (!(flags
& UPDATE_ALLCHILDREN
) && !(win
->style
& WS_CLIPCHILDREN
)) return 0;
1279 LIST_FOR_EACH_ENTRY( ptr
, &win
->children
, struct window
, entry
)
1281 if (from_child
) /* skip all children until from_child is found */
1283 if (ptr
== from_child
) from_child
= NULL
;
1286 if (!(ptr
->style
& WS_VISIBLE
)) continue;
1287 if ((ret
= get_update_flags( ptr
, flags
)) != 0)
1292 if ((ret
= get_child_update_flags( ptr
, NULL
, flags
, child
))) break;
1297 /* iterate through children and siblings of the given window until we find one with some update flags */
1298 static unsigned int get_window_update_flags( struct window
*win
, struct window
*from_child
,
1299 unsigned int flags
, struct window
**child
)
1302 struct window
*ptr
, *from_sibling
= NULL
;
1304 /* if some parent is not visible start from the next sibling */
1306 if (!is_visible( win
)) return 0;
1307 for (ptr
= from_child
; ptr
; ptr
= ptr
->parent
)
1309 if (!(ptr
->style
& WS_VISIBLE
) || (ptr
->style
& WS_MINIMIZE
)) from_sibling
= ptr
;
1310 if (ptr
== win
) break;
1313 /* non-client painting must be delayed if one of the parents is going to
1314 * be repainted and doesn't clip children */
1316 if ((flags
& UPDATE_NONCLIENT
) && !(flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)))
1318 for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
)
1320 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
))
1323 if (from_child
&& !(flags
& UPDATE_ALLCHILDREN
))
1325 for (ptr
= from_sibling
? from_sibling
: from_child
; ptr
; ptr
= ptr
->parent
)
1327 if (!(ptr
->style
& WS_CLIPCHILDREN
) && win_needs_repaint( ptr
)) from_sibling
= ptr
;
1328 if (ptr
== win
) break;
1334 /* check window itself (only if not restarting from a child) */
1338 if ((ret
= get_update_flags( win
, flags
)))
1346 /* now check children */
1348 if (flags
& UPDATE_NOCHILDREN
) return 0;
1351 if ((ret
= get_child_update_flags( from_child
, NULL
, flags
, child
))) return ret
;
1352 from_sibling
= from_child
;
1355 /* then check siblings and parent siblings */
1357 while (from_sibling
->parent
&& from_sibling
!= win
)
1359 if ((ret
= get_child_update_flags( from_sibling
->parent
, from_sibling
, flags
, child
)))
1361 from_sibling
= from_sibling
->parent
;
1367 /* expose the areas revealed by a vis region change on the window parent */
1368 /* returns the region exposed on the window itself (in client coordinates) */
1369 static struct region
*expose_window( struct window
*win
, const rectangle_t
*old_window_rect
,
1370 struct region
*old_vis_rgn
)
1372 struct window
*parent
= win
;
1373 struct region
*new_vis_rgn
, *exposed_rgn
;
1375 if (!(new_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return NULL
;
1377 if ((exposed_rgn
= create_empty_region()))
1379 if (subtract_region( exposed_rgn
, new_vis_rgn
, old_vis_rgn
) && !is_region_empty( exposed_rgn
))
1381 /* make it relative to the new client area */
1382 offset_region( exposed_rgn
, win
->window_rect
.left
- win
->client_rect
.left
,
1383 win
->window_rect
.top
- win
->client_rect
.top
);
1387 free_region( exposed_rgn
);
1392 /* make it relative to the old window pos for subtracting */
1393 offset_region( new_vis_rgn
, win
->window_rect
.left
- old_window_rect
->left
,
1394 win
->window_rect
.top
- old_window_rect
->top
);
1396 if (subtract_region( new_vis_rgn
, old_vis_rgn
, new_vis_rgn
) && !is_region_empty( new_vis_rgn
))
1398 /* make it relative to new client rect again */
1399 int offset_x
= old_window_rect
->left
- win
->client_rect
.left
;
1400 int offset_y
= old_window_rect
->top
- win
->client_rect
.top
;
1401 if (win
->parent
&& !is_desktop_window(win
->parent
))
1403 offset_x
+= win
->client_rect
.left
;
1404 offset_y
+= win
->client_rect
.top
;
1405 parent
= win
->parent
;
1407 offset_region( new_vis_rgn
, offset_x
, offset_y
);
1408 redraw_window( parent
, new_vis_rgn
, 0, RDW_INVALIDATE
| RDW_ERASE
| RDW_ALLCHILDREN
);
1410 free_region( new_vis_rgn
);
1415 /* set the window and client rectangles, updating the update region if necessary */
1416 static void set_window_pos( struct window
*win
, struct window
*previous
,
1417 unsigned int swp_flags
, const rectangle_t
*window_rect
,
1418 const rectangle_t
*client_rect
, const rectangle_t
*visible_rect
,
1419 const rectangle_t
*valid_rects
)
1421 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
= NULL
;
1422 const rectangle_t old_window_rect
= win
->window_rect
;
1423 const rectangle_t old_visible_rect
= win
->visible_rect
;
1424 const rectangle_t old_client_rect
= win
->client_rect
;
1425 int client_changed
, frame_changed
;
1426 int visible
= (win
->style
& WS_VISIBLE
) || (swp_flags
& SWP_SHOWWINDOW
);
1428 if (win
->parent
&& !is_visible( win
->parent
)) visible
= 0;
1430 if (visible
&& !(old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
))) return;
1432 /* set the new window info before invalidating anything */
1434 win
->window_rect
= *window_rect
;
1435 win
->visible_rect
= *visible_rect
;
1436 win
->client_rect
= *client_rect
;
1437 if (!(swp_flags
& SWP_NOZORDER
) && win
->parent
) link_window( win
, previous
);
1438 if (swp_flags
& SWP_SHOWWINDOW
) win
->style
|= WS_VISIBLE
;
1439 else if (swp_flags
& SWP_HIDEWINDOW
) win
->style
&= ~WS_VISIBLE
;
1441 /* if the window is not visible, everything is easy */
1442 if (!visible
) return;
1444 /* expose anything revealed by the change */
1446 if (!(swp_flags
& SWP_NOREDRAW
))
1447 exposed_rgn
= expose_window( win
, &old_window_rect
, old_vis_rgn
);
1449 if (!(win
->style
& WS_VISIBLE
))
1451 /* clear the update region since the window is no longer visible */
1452 validate_whole_window( win
);
1453 validate_children( win
);
1457 /* crop update region to the new window rect */
1459 if (win
->update_region
&&
1460 (window_rect
->right
- window_rect
->left
< old_window_rect
.right
- old_window_rect
.left
||
1461 window_rect
->bottom
- window_rect
->top
< old_window_rect
.bottom
- old_window_rect
.top
))
1463 struct region
*tmp
= create_empty_region();
1466 set_region_rect( tmp
, window_rect
);
1467 if (!is_desktop_window(win
))
1468 offset_region( tmp
, -window_rect
->left
, -window_rect
->top
);
1469 if (intersect_region( tmp
, win
->update_region
, tmp
))
1470 set_update_region( win
, tmp
);
1476 if (swp_flags
& SWP_NOREDRAW
) goto done
; /* do not repaint anything */
1478 /* expose the whole non-client area if it changed in any way */
1480 if (swp_flags
& SWP_NOCOPYBITS
)
1482 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1483 memcmp( window_rect
, &old_window_rect
, sizeof(old_window_rect
) ) ||
1484 memcmp( visible_rect
, &old_visible_rect
, sizeof(old_visible_rect
) ));
1485 client_changed
= memcmp( client_rect
, &old_client_rect
, sizeof(old_client_rect
) );
1489 /* assume the bits have been moved to follow the window rect */
1490 int x_offset
= window_rect
->left
- old_window_rect
.left
;
1491 int y_offset
= window_rect
->top
- old_window_rect
.top
;
1492 frame_changed
= ((swp_flags
& SWP_FRAMECHANGED
) ||
1493 window_rect
->right
- old_window_rect
.right
!= x_offset
||
1494 window_rect
->bottom
- old_window_rect
.bottom
!= y_offset
||
1495 visible_rect
->left
- old_visible_rect
.left
!= x_offset
||
1496 visible_rect
->right
- old_visible_rect
.right
!= x_offset
||
1497 visible_rect
->top
- old_visible_rect
.top
!= y_offset
||
1498 visible_rect
->bottom
- old_visible_rect
.bottom
!= y_offset
);
1499 client_changed
= (client_rect
->left
- old_client_rect
.left
!= x_offset
||
1500 client_rect
->right
- old_client_rect
.right
!= x_offset
||
1501 client_rect
->top
- old_client_rect
.top
!= y_offset
||
1502 client_rect
->bottom
- old_client_rect
.bottom
!= y_offset
);
1505 if (frame_changed
|| client_changed
)
1507 struct region
*tmp
= create_empty_region();
1511 /* subtract the valid portion of client rect from the total region */
1512 if (!client_changed
)
1513 set_region_rect( tmp
, client_rect
);
1514 else if (valid_rects
)
1515 set_region_rect( tmp
, &valid_rects
[0] );
1517 set_region_rect( old_vis_rgn
, window_rect
);
1518 if (!subtract_region( tmp
, old_vis_rgn
, tmp
)) free_region( tmp
);
1521 if (!is_desktop_window(win
))
1522 offset_region( tmp
, -client_rect
->left
, -client_rect
->top
);
1525 union_region( exposed_rgn
, exposed_rgn
, tmp
);
1528 else exposed_rgn
= tmp
;
1534 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1537 free_region( old_vis_rgn
);
1538 if (exposed_rgn
) free_region( exposed_rgn
);
1539 clear_error(); /* we ignore out of memory errors once the new rects have been set */
1543 /* set the window region, updating the update region if necessary */
1544 static void set_window_region( struct window
*win
, struct region
*region
, int redraw
)
1546 struct region
*old_vis_rgn
= NULL
, *exposed_rgn
;
1548 /* no need to redraw if window is not visible */
1549 if (redraw
&& !is_visible( win
)) redraw
= 0;
1551 if (redraw
) old_vis_rgn
= get_visible_region( win
, DCX_WINDOW
);
1553 if (win
->win_region
) free_region( win
->win_region
);
1554 win
->win_region
= region
;
1556 /* expose anything revealed by the change */
1557 if (old_vis_rgn
&& ((exposed_rgn
= expose_window( win
, &win
->window_rect
, old_vis_rgn
))))
1559 redraw_window( win
, exposed_rgn
, 1, RDW_INVALIDATE
| RDW_ERASE
| RDW_FRAME
| RDW_ALLCHILDREN
);
1560 free_region( exposed_rgn
);
1563 if (old_vis_rgn
) free_region( old_vis_rgn
);
1564 clear_error(); /* we ignore out of memory errors since the region has been set */
1568 /* create a window */
1569 DECL_HANDLER(create_window
)
1571 struct window
*win
, *parent
, *owner
= NULL
;
1576 if (!req
->parent
) parent
= get_desktop_window( current
, 0 );
1577 else if (!(parent
= get_window( req
->parent
))) return;
1581 if (!(owner
= get_window( req
->owner
))) return;
1582 if (is_desktop_window(owner
)) owner
= NULL
;
1583 else if (!is_desktop_window(parent
))
1585 /* an owned window must be created as top-level */
1586 set_error( STATUS_ACCESS_DENIED
);
1589 else /* owner must be a top-level window */
1590 while (!is_desktop_window(owner
->parent
)) owner
= owner
->parent
;
1593 if (get_req_data_size())
1594 atom
= find_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
1598 if (!(win
= create_window( parent
, owner
, atom
, req
->instance
))) return;
1600 reply
->handle
= win
->handle
;
1601 reply
->parent
= win
->parent
? win
->parent
->handle
: 0;
1602 reply
->owner
= win
->owner
;
1603 reply
->extra
= win
->nb_extra_bytes
;
1604 reply
->class_ptr
= get_class_client_ptr( win
->class );
1608 /* set the parent of a window */
1609 DECL_HANDLER(set_parent
)
1611 struct window
*win
, *parent
= NULL
;
1613 if (!(win
= get_window( req
->handle
))) return;
1614 if (req
->parent
&& !(parent
= get_window( req
->parent
))) return;
1616 if (is_desktop_window(win
))
1618 set_error( STATUS_INVALID_PARAMETER
);
1621 reply
->old_parent
= win
->parent
->handle
;
1622 reply
->full_parent
= parent
? parent
->handle
: 0;
1623 set_parent_window( win
, parent
);
1627 /* destroy a window */
1628 DECL_HANDLER(destroy_window
)
1630 struct window
*win
= get_window( req
->handle
);
1633 if (!is_desktop_window(win
)) destroy_window( win
);
1634 else if (win
->thread
== current
) detach_window_thread( win
);
1635 else set_error( STATUS_ACCESS_DENIED
);
1640 /* retrieve the desktop window for the current thread */
1641 DECL_HANDLER(get_desktop_window
)
1643 struct window
*win
= get_desktop_window( current
, req
->force
);
1645 if (win
) reply
->handle
= win
->handle
;
1649 /* set a window owner */
1650 DECL_HANDLER(set_window_owner
)
1652 struct window
*win
= get_window( req
->handle
);
1653 struct window
*owner
= NULL
;
1656 if (req
->owner
&& !(owner
= get_window( req
->owner
))) return;
1657 if (is_desktop_window(win
))
1659 set_error( STATUS_ACCESS_DENIED
);
1662 reply
->prev_owner
= win
->owner
;
1663 reply
->full_owner
= win
->owner
= owner
? owner
->handle
: 0;
1667 /* get information from a window handle */
1668 DECL_HANDLER(get_window_info
)
1670 struct window
*win
= get_window( req
->handle
);
1672 reply
->full_handle
= 0;
1673 reply
->tid
= reply
->pid
= 0;
1676 reply
->full_handle
= win
->handle
;
1677 reply
->last_active
= win
->handle
;
1678 reply
->is_unicode
= win
->is_unicode
;
1679 if (get_user_object( win
->last_active
, USER_WINDOW
)) reply
->last_active
= win
->last_active
;
1682 reply
->tid
= get_thread_id( win
->thread
);
1683 reply
->pid
= get_process_id( win
->thread
->process
);
1684 reply
->atom
= win
->class ? get_class_atom( win
->class ) : DESKTOP_ATOM
;
1690 /* set some information in a window */
1691 DECL_HANDLER(set_window_info
)
1693 struct window
*win
= get_window( req
->handle
);
1696 if (req
->flags
&& is_desktop_window(win
) && win
->thread
!= current
)
1698 set_error( STATUS_ACCESS_DENIED
);
1701 if (req
->extra_size
> sizeof(req
->extra_value
) ||
1702 req
->extra_offset
< -1 ||
1703 req
->extra_offset
> win
->nb_extra_bytes
- (int)req
->extra_size
)
1705 set_win32_error( ERROR_INVALID_INDEX
);
1708 if (req
->extra_offset
!= -1)
1710 memcpy( &reply
->old_extra_value
, win
->extra_bytes
+ req
->extra_offset
, req
->extra_size
);
1712 else if (req
->flags
& SET_WIN_EXTRA
)
1714 set_win32_error( ERROR_INVALID_INDEX
);
1717 reply
->old_style
= win
->style
;
1718 reply
->old_ex_style
= win
->ex_style
;
1719 reply
->old_id
= win
->id
;
1720 reply
->old_instance
= win
->instance
;
1721 reply
->old_user_data
= win
->user_data
;
1722 if (req
->flags
& SET_WIN_STYLE
) win
->style
= req
->style
;
1723 if (req
->flags
& SET_WIN_EXSTYLE
)
1725 /* WS_EX_TOPMOST can only be changed for unlinked windows */
1726 if (!win
->is_linked
) win
->ex_style
= req
->ex_style
;
1727 else win
->ex_style
= (req
->ex_style
& ~WS_EX_TOPMOST
) | (win
->ex_style
& WS_EX_TOPMOST
);
1729 if (req
->flags
& SET_WIN_ID
) win
->id
= req
->id
;
1730 if (req
->flags
& SET_WIN_INSTANCE
) win
->instance
= req
->instance
;
1731 if (req
->flags
& SET_WIN_UNICODE
) win
->is_unicode
= req
->is_unicode
;
1732 if (req
->flags
& SET_WIN_USERDATA
) win
->user_data
= req
->user_data
;
1733 if (req
->flags
& SET_WIN_EXTRA
) memcpy( win
->extra_bytes
+ req
->extra_offset
,
1734 &req
->extra_value
, req
->extra_size
);
1736 /* changing window style triggers a non-client paint */
1737 if (req
->flags
& SET_WIN_STYLE
) win
->paint_flags
|= PAINT_NONCLIENT
;
1741 /* get a list of the window parents, up to the root of the tree */
1742 DECL_HANDLER(get_window_parents
)
1744 struct window
*ptr
, *win
= get_window( req
->handle
);
1746 user_handle_t
*data
;
1749 if (win
) for (ptr
= win
->parent
; ptr
; ptr
= ptr
->parent
) total
++;
1751 reply
->count
= total
;
1752 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1753 if (len
&& ((data
= set_reply_data_size( len
))))
1755 for (ptr
= win
->parent
; ptr
&& len
; ptr
= ptr
->parent
, len
-= sizeof(*data
))
1756 *data
++ = ptr
->handle
;
1761 /* get a list of the window children */
1762 DECL_HANDLER(get_window_children
)
1764 struct window
*ptr
, *parent
= get_window( req
->parent
);
1766 user_handle_t
*data
;
1768 atom_t atom
= req
->atom
;
1770 if (get_req_data_size())
1772 atom
= find_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
1778 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1780 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1781 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1785 reply
->count
= total
;
1786 len
= min( get_reply_max_size(), total
* sizeof(user_handle_t
) );
1787 if (len
&& ((data
= set_reply_data_size( len
))))
1789 LIST_FOR_EACH_ENTRY( ptr
, &parent
->children
, struct window
, entry
)
1791 if (len
< sizeof(*data
)) break;
1792 if (atom
&& get_class_atom(ptr
->class) != atom
) continue;
1793 if (req
->tid
&& get_thread_id(ptr
->thread
) != req
->tid
) continue;
1794 *data
++ = ptr
->handle
;
1795 len
-= sizeof(*data
);
1801 /* get a list of the window children that contain a given point */
1802 DECL_HANDLER(get_window_children_from_point
)
1804 struct user_handle_array array
;
1805 struct window
*parent
= get_window( req
->parent
);
1808 if (!parent
) return;
1810 array
.handles
= NULL
;
1813 if (!all_windows_from_point( parent
, req
->x
, req
->y
, &array
)) return;
1815 reply
->count
= array
.count
;
1816 len
= min( get_reply_max_size(), array
.count
* sizeof(user_handle_t
) );
1817 if (len
) set_reply_data_ptr( array
.handles
, len
);
1818 else free( array
.handles
);
1822 /* get window tree information from a window handle */
1823 DECL_HANDLER(get_window_tree
)
1825 struct window
*ptr
, *win
= get_window( req
->handle
);
1831 reply
->next_sibling
= 0;
1832 reply
->prev_sibling
= 0;
1833 reply
->first_sibling
= 0;
1834 reply
->last_sibling
= 0;
1835 reply
->first_child
= 0;
1836 reply
->last_child
= 0;
1840 struct window
*parent
= win
->parent
;
1841 reply
->parent
= parent
->handle
;
1842 reply
->owner
= win
->owner
;
1845 if ((ptr
= get_next_window( win
))) reply
->next_sibling
= ptr
->handle
;
1846 if ((ptr
= get_prev_window( win
))) reply
->prev_sibling
= ptr
->handle
;
1848 if ((ptr
= get_first_child( parent
))) reply
->first_sibling
= ptr
->handle
;
1849 if ((ptr
= get_last_child( parent
))) reply
->last_sibling
= ptr
->handle
;
1851 if ((ptr
= get_first_child( win
))) reply
->first_child
= ptr
->handle
;
1852 if ((ptr
= get_last_child( win
))) reply
->last_child
= ptr
->handle
;
1856 /* set the position and Z order of a window */
1857 DECL_HANDLER(set_window_pos
)
1859 const rectangle_t
*visible_rect
= NULL
, *valid_rects
= NULL
;
1860 struct window
*previous
= NULL
;
1861 struct window
*win
= get_window( req
->handle
);
1862 unsigned int flags
= req
->flags
;
1865 if (!win
->parent
) flags
|= SWP_NOZORDER
; /* no Z order for the desktop */
1867 if (!(flags
& SWP_NOZORDER
))
1869 switch ((int)(unsigned long)req
->previous
)
1871 case 0: /* HWND_TOP */
1872 previous
= WINPTR_TOP
;
1874 case 1: /* HWND_BOTTOM */
1875 previous
= WINPTR_BOTTOM
;
1877 case -1: /* HWND_TOPMOST */
1878 previous
= WINPTR_TOPMOST
;
1880 case -2: /* HWND_NOTOPMOST */
1881 previous
= WINPTR_NOTOPMOST
;
1884 if (!(previous
= get_window( req
->previous
))) return;
1885 /* previous must be a sibling */
1886 if (previous
->parent
!= win
->parent
)
1888 set_error( STATUS_INVALID_PARAMETER
);
1893 if (previous
== win
) flags
|= SWP_NOZORDER
; /* nothing to do */
1896 /* window rectangle must be ordered properly */
1897 if (req
->window
.right
< req
->window
.left
|| req
->window
.bottom
< req
->window
.top
)
1899 set_error( STATUS_INVALID_PARAMETER
);
1903 if (get_req_data_size() >= sizeof(rectangle_t
)) visible_rect
= get_req_data();
1904 if (get_req_data_size() >= 3 * sizeof(rectangle_t
)) valid_rects
= visible_rect
+ 1;
1906 if (!visible_rect
) visible_rect
= &req
->window
;
1907 set_window_pos( win
, previous
, flags
, &req
->window
, &req
->client
, visible_rect
, valid_rects
);
1908 reply
->new_style
= win
->style
;
1909 reply
->new_ex_style
= win
->ex_style
;
1913 /* get the window and client rectangles of a window */
1914 DECL_HANDLER(get_window_rectangles
)
1916 struct window
*win
= get_window( req
->handle
);
1920 reply
->window
= win
->window_rect
;
1921 reply
->visible
= win
->visible_rect
;
1922 reply
->client
= win
->client_rect
;
1927 /* get the window text */
1928 DECL_HANDLER(get_window_text
)
1930 struct window
*win
= get_window( req
->handle
);
1932 if (win
&& win
->text
)
1934 data_size_t len
= strlenW( win
->text
) * sizeof(WCHAR
);
1935 if (len
> get_reply_max_size()) len
= get_reply_max_size();
1936 set_reply_data( win
->text
, len
);
1941 /* set the window text */
1942 DECL_HANDLER(set_window_text
)
1944 struct window
*win
= get_window( req
->handle
);
1949 data_size_t len
= get_req_data_size() / sizeof(WCHAR
);
1952 if (!(text
= mem_alloc( (len
+1) * sizeof(WCHAR
) ))) return;
1953 memcpy( text
, get_req_data(), len
* sizeof(WCHAR
) );
1962 /* get the coordinates offset between two windows */
1963 DECL_HANDLER(get_windows_offset
)
1967 reply
->x
= reply
->y
= 0;
1970 if (!(win
= get_window( req
->from
))) return;
1971 while (win
&& !is_desktop_window(win
))
1973 reply
->x
+= win
->client_rect
.left
;
1974 reply
->y
+= win
->client_rect
.top
;
1980 if (!(win
= get_window( req
->to
))) return;
1981 while (win
&& !is_desktop_window(win
))
1983 reply
->x
-= win
->client_rect
.left
;
1984 reply
->y
-= win
->client_rect
.top
;
1991 /* get the visible region of a window */
1992 DECL_HANDLER(get_visible_region
)
1994 struct region
*region
;
1995 struct window
*top
, *win
= get_window( req
->window
);
1999 top
= get_top_clipping_window( win
);
2000 if ((region
= get_visible_region( win
, req
->flags
)))
2003 map_win_region_to_screen( win
, region
);
2004 data
= get_region_data_and_free( region
, get_reply_max_size(), &reply
->total_size
);
2005 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2007 reply
->top_win
= top
->handle
;
2008 reply
->top_rect
= top
->visible_rect
;
2010 if (!is_desktop_window(win
))
2012 reply
->win_rect
= (req
->flags
& DCX_WINDOW
) ? win
->window_rect
: win
->client_rect
;
2013 client_to_screen_rect( top
->parent
, &reply
->top_rect
);
2014 client_to_screen_rect( win
->parent
, &reply
->win_rect
);
2018 reply
->win_rect
.left
= 0;
2019 reply
->win_rect
.top
= 0;
2020 reply
->win_rect
.right
= win
->client_rect
.right
- win
->client_rect
.left
;
2021 reply
->win_rect
.bottom
= win
->client_rect
.bottom
- win
->client_rect
.top
;
2026 /* get the window region */
2027 DECL_HANDLER(get_window_region
)
2029 struct window
*win
= get_window( req
->window
);
2033 if (win
->win_region
)
2035 rectangle_t
*data
= get_region_data( win
->win_region
, get_reply_max_size(), &reply
->total_size
);
2036 if (data
) set_reply_data_ptr( data
, reply
->total_size
);
2041 /* set the window region */
2042 DECL_HANDLER(set_window_region
)
2044 struct region
*region
= NULL
;
2045 struct window
*win
= get_window( req
->window
);
2049 if (get_req_data_size()) /* no data means remove the region completely */
2051 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2054 set_window_region( win
, region
, req
->redraw
);
2058 /* get a window update region */
2059 DECL_HANDLER(get_update_region
)
2062 unsigned int flags
= req
->flags
;
2063 struct window
*from_child
= NULL
;
2064 struct window
*win
= get_window( req
->window
);
2069 if (req
->from_child
)
2073 if (!(from_child
= get_window( req
->from_child
))) return;
2075 /* make sure from_child is a child of win */
2077 while (ptr
&& ptr
!= win
) ptr
= ptr
->parent
;
2080 set_error( STATUS_INVALID_PARAMETER
);
2085 if (flags
& UPDATE_DELAYED_ERASE
) /* this means that the previous call didn't erase */
2087 if (from_child
) from_child
->paint_flags
|= PAINT_DELAYED_ERASE
;
2088 else win
->paint_flags
|= PAINT_DELAYED_ERASE
;
2091 reply
->flags
= get_window_update_flags( win
, from_child
, flags
, &win
);
2092 reply
->child
= win
->handle
;
2094 if (flags
& UPDATE_NOREGION
) return;
2096 if (win
->update_region
)
2098 /* convert update region to screen coordinates */
2099 struct region
*region
= create_empty_region();
2101 if (!region
) return;
2102 if (!copy_region( region
, win
->update_region
))
2104 free_region( region
);
2107 map_win_region_to_screen( win
, region
);
2108 if (!(data
= get_region_data_and_free( region
, get_reply_max_size(),
2109 &reply
->total_size
))) return;
2110 set_reply_data_ptr( data
, reply
->total_size
);
2113 if (reply
->flags
& (UPDATE_PAINT
|UPDATE_INTERNALPAINT
)) /* validate everything */
2115 validate_parents( win
);
2116 validate_whole_window( win
);
2120 if (reply
->flags
& UPDATE_NONCLIENT
) validate_non_client( win
);
2121 if (reply
->flags
& UPDATE_ERASE
)
2123 win
->paint_flags
&= ~(PAINT_ERASE
| PAINT_DELAYED_ERASE
);
2124 /* desktop window only gets erased, not repainted */
2125 if (is_desktop_window(win
)) validate_whole_window( win
);
2131 /* update the z order of a window so that a given rectangle is fully visible */
2132 DECL_HANDLER(update_window_zorder
)
2135 struct window
*ptr
, *win
= get_window( req
->window
);
2137 if (!win
|| !win
->parent
|| !is_visible( win
)) return; /* nothing to do */
2139 LIST_FOR_EACH_ENTRY( ptr
, &win
->parent
->children
, struct window
, entry
)
2141 if (ptr
== win
) break;
2142 if (!(ptr
->style
& WS_VISIBLE
)) continue;
2143 if (ptr
->ex_style
& WS_EX_TRANSPARENT
) continue;
2144 if (!intersect_rect( &tmp
, &ptr
->visible_rect
, &req
->rect
)) continue;
2145 if (ptr
->win_region
&& !rect_in_region( ptr
->win_region
, &req
->rect
)) continue;
2146 /* found a window obscuring the rectangle, now move win above this one */
2147 /* making sure to not violate the topmost rule */
2148 if (!(ptr
->ex_style
& WS_EX_TOPMOST
) || (win
->ex_style
& WS_EX_TOPMOST
))
2150 list_remove( &win
->entry
);
2151 list_add_before( &ptr
->entry
, &win
->entry
);
2158 /* mark parts of a window as needing a redraw */
2159 DECL_HANDLER(redraw_window
)
2161 struct region
*region
= NULL
;
2162 struct window
*win
= get_window( req
->window
);
2165 if (!is_visible( win
)) return; /* nothing to do */
2167 if (req
->flags
& (RDW_VALIDATE
|RDW_INVALIDATE
))
2169 if (get_req_data_size()) /* no data means whole rectangle */
2171 if (!(region
= create_region_from_req_data( get_req_data(), get_req_data_size() )))
2176 redraw_window( win
, region
, (req
->flags
& RDW_INVALIDATE
) && (req
->flags
& RDW_FRAME
),
2178 if (region
) free_region( region
);
2182 /* set a window property */
2183 DECL_HANDLER(set_window_property
)
2185 struct window
*win
= get_window( req
->window
);
2189 if (get_req_data_size())
2191 atom_t atom
= add_global_atom( NULL
, get_req_data(), get_req_data_size() / sizeof(WCHAR
) );
2194 set_property( win
, atom
, req
->handle
, PROP_TYPE_STRING
);
2195 release_global_atom( NULL
, atom
);
2198 else set_property( win
, req
->atom
, req
->handle
, PROP_TYPE_ATOM
);
2202 /* remove a window property */
2203 DECL_HANDLER(remove_window_property
)
2205 struct window
*win
= get_window( req
->window
);
2209 atom_t atom
= req
->atom
;
2210 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2211 get_req_data_size() / sizeof(WCHAR
) );
2212 if (atom
) reply
->handle
= remove_property( win
, atom
);
2217 /* get a window property */
2218 DECL_HANDLER(get_window_property
)
2220 struct window
*win
= get_window( req
->window
);
2224 atom_t atom
= req
->atom
;
2225 if (get_req_data_size()) atom
= find_global_atom( NULL
, get_req_data(),
2226 get_req_data_size() / sizeof(WCHAR
) );
2227 if (atom
) reply
->handle
= get_property( win
, atom
);
2232 /* get the list of properties of a window */
2233 DECL_HANDLER(get_window_properties
)
2235 property_data_t
*data
;
2236 int i
, count
, max
= get_reply_max_size() / sizeof(*data
);
2237 struct window
*win
= get_window( req
->window
);
2242 for (i
= count
= 0; i
< win
->prop_inuse
; i
++)
2243 if (win
->properties
[i
].type
!= PROP_TYPE_FREE
) count
++;
2244 reply
->total
= count
;
2246 if (count
> max
) count
= max
;
2247 if (!count
|| !(data
= set_reply_data_size( count
* sizeof(*data
) ))) return;
2249 for (i
= 0; i
< win
->prop_inuse
&& count
; i
++)
2251 if (win
->properties
[i
].type
== PROP_TYPE_FREE
) continue;
2252 data
->atom
= win
->properties
[i
].atom
;
2253 data
->string
= (win
->properties
[i
].type
== PROP_TYPE_STRING
);
2254 data
->handle
= win
->properties
[i
].handle
;
2261 /* get the new window pointer for a global window, checking permissions */
2262 /* helper for set_global_windows request */
2263 static int get_new_global_window( struct window
**win
, user_handle_t handle
)
2272 set_error( STATUS_ACCESS_DENIED
);
2275 *win
= get_window( handle
);
2276 return (*win
!= NULL
);
2279 /* Set/get the global windows */
2280 DECL_HANDLER(set_global_windows
)
2282 struct window
*new_shell_window
= shell_window
;
2283 struct window
*new_shell_listview
= shell_listview
;
2284 struct window
*new_progman_window
= progman_window
;
2285 struct window
*new_taskman_window
= taskman_window
;
2287 reply
->old_shell_window
= shell_window
? shell_window
->handle
: 0;
2288 reply
->old_shell_listview
= shell_listview
? shell_listview
->handle
: 0;
2289 reply
->old_progman_window
= progman_window
? progman_window
->handle
: 0;
2290 reply
->old_taskman_window
= taskman_window
? taskman_window
->handle
: 0;
2292 if (req
->flags
& SET_GLOBAL_SHELL_WINDOWS
)
2294 if (!get_new_global_window( &new_shell_window
, req
->shell_window
)) return;
2295 if (!get_new_global_window( &new_shell_listview
, req
->shell_listview
)) return;
2297 if (req
->flags
& SET_GLOBAL_PROGMAN_WINDOW
)
2299 if (!get_new_global_window( &new_progman_window
, req
->progman_window
)) return;
2301 if (req
->flags
& SET_GLOBAL_TASKMAN_WINDOW
)
2303 if (!get_new_global_window( &new_taskman_window
, req
->taskman_window
)) return;
2305 shell_window
= new_shell_window
;
2306 shell_listview
= new_shell_listview
;
2307 progman_window
= new_progman_window
;
2308 taskman_window
= new_taskman_window
;