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winex11: Process all types of messages while moving/resizing a window.
[wine/multimedia.git] / server / queue.c
blob1cda33c6e418ceefb0df52d8debd6dbe4d361952
1 /*
2 * Server-side message queues
3 *
4 * Copyright (C) 2000 Alexandre Julliard
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28
29 #include "ntstatus.h"
30 #define WIN32_NO_STATUS
31 #include "windef.h"
32 #include "winbase.h"
33 #include "wingdi.h"
34 #include "winuser.h"
35 #include "winternl.h"
36
37 #include "handle.h"
38 #include "file.h"
39 #include "thread.h"
40 #include "process.h"
41 #include "request.h"
42 #include "user.h"
43
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
46
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
49
50
51 struct message_result
52 {
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int error; /* error code to pass back to sender */
60 unsigned long result; /* reply result */
61 struct message *callback_msg; /* message to queue for callback */
62 void *data; /* message reply data */
63 unsigned int data_size; /* size of message reply data */
64 struct timeout_user *timeout; /* result timeout */
65 };
66
67 struct message
68 {
69 struct list entry; /* entry in message list */
70 enum message_type type; /* message type */
71 user_handle_t win; /* window handle */
72 unsigned int msg; /* message code */
73 unsigned long wparam; /* parameters */
74 unsigned long lparam; /* parameters */
75 unsigned long info; /* extra info */
76 int x; /* x position */
77 int y; /* y position */
78 unsigned int time; /* message time */
79 void *data; /* message data for sent messages */
80 unsigned int data_size; /* size of message data */
81 unsigned int unique_id; /* unique id for nested hw message waits */
82 struct message_result *result; /* result in sender queue */
83 };
84
85 struct timer
86 {
87 struct list entry; /* entry in timer list */
88 timeout_t when; /* next expiration */
89 unsigned int rate; /* timer rate in ms */
90 user_handle_t win; /* window handle */
91 unsigned int msg; /* message to post */
92 unsigned long id; /* timer id */
93 unsigned long lparam; /* lparam for message */
94 };
95
96 struct thread_input
97 {
98 struct object obj; /* object header */
99 struct desktop *desktop; /* desktop that this thread input belongs to */
100 user_handle_t focus; /* focus window */
101 user_handle_t capture; /* capture window */
102 user_handle_t active; /* active window */
103 user_handle_t menu_owner; /* current menu owner window */
104 user_handle_t move_size; /* current moving/resizing window */
105 user_handle_t caret; /* caret window */
106 rectangle_t caret_rect; /* caret rectangle */
107 int caret_hide; /* caret hide count */
108 int caret_state; /* caret on/off state */
109 struct list msg_list; /* list of hardware messages */
110 unsigned char keystate[256]; /* state of each key */
111 };
112
113 struct msg_queue
114 {
115 struct object obj; /* object header */
116 struct fd *fd; /* optional file descriptor to poll */
117 unsigned int wake_bits; /* wakeup bits */
118 unsigned int wake_mask; /* wakeup mask */
119 unsigned int changed_bits; /* changed wakeup bits */
120 unsigned int changed_mask; /* changed wakeup mask */
121 int paint_count; /* pending paint messages count */
122 int quit_message; /* is there a pending quit message? */
123 int exit_code; /* exit code of pending quit message */
124 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
125 struct list send_result; /* stack of sent messages waiting for result */
126 struct list callback_result; /* list of callback messages waiting for result */
127 struct message_result *recv_result; /* stack of received messages waiting for result */
128 struct list pending_timers; /* list of pending timers */
129 struct list expired_timers; /* list of expired timers */
130 unsigned long next_timer_id; /* id for the next timer with a 0 window */
131 struct timeout_user *timeout; /* timeout for next timer to expire */
132 struct thread_input *input; /* thread input descriptor */
133 struct hook_table *hooks; /* hook table */
134 timeout_t last_get_msg; /* time of last get message call */
135 };
136
137 static void msg_queue_dump( struct object *obj, int verbose );
138 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
139 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
140 static int msg_queue_signaled( struct object *obj, struct thread *thread );
141 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
142 static void msg_queue_destroy( struct object *obj );
143 static void msg_queue_poll_event( struct fd *fd, int event );
144 static void thread_input_dump( struct object *obj, int verbose );
145 static void thread_input_destroy( struct object *obj );
146 static void timer_callback( void *private );
147
148 static const struct object_ops msg_queue_ops =
149 {
150 sizeof(struct msg_queue), /* size */
151 msg_queue_dump, /* dump */
152 msg_queue_add_queue, /* add_queue */
153 msg_queue_remove_queue, /* remove_queue */
154 msg_queue_signaled, /* signaled */
155 msg_queue_satisfied, /* satisfied */
156 no_signal, /* signal */
157 no_get_fd, /* get_fd */
158 no_map_access, /* map_access */
159 default_get_sd, /* get_sd */
160 default_set_sd, /* set_sd */
161 no_lookup_name, /* lookup_name */
162 no_open_file, /* open_file */
163 no_close_handle, /* close_handle */
164 msg_queue_destroy /* destroy */
165 };
166
167 static const struct fd_ops msg_queue_fd_ops =
168 {
169 NULL, /* get_poll_events */
170 msg_queue_poll_event, /* poll_event */
171 NULL, /* flush */
172 NULL, /* get_fd_type */
173 NULL, /* ioctl */
174 NULL, /* queue_async */
175 NULL, /* reselect_async */
176 NULL /* cancel async */
177 };
178
179
180 static const struct object_ops thread_input_ops =
181 {
182 sizeof(struct thread_input), /* size */
183 thread_input_dump, /* dump */
184 no_add_queue, /* add_queue */
185 NULL, /* remove_queue */
186 NULL, /* signaled */
187 NULL, /* satisfied */
188 no_signal, /* signal */
189 no_get_fd, /* get_fd */
190 no_map_access, /* map_access */
191 default_get_sd, /* get_sd */
192 default_set_sd, /* set_sd */
193 no_lookup_name, /* lookup_name */
194 no_open_file, /* open_file */
195 no_close_handle, /* close_handle */
196 thread_input_destroy /* destroy */
197 };
198
199 /* pointer to input structure of foreground thread */
200 static struct thread_input *foreground_input;
201 static unsigned int last_input_time;
202
203 static void free_message( struct message *msg );
204
205 /* set the caret window in a given thread input */
206 static void set_caret_window( struct thread_input *input, user_handle_t win )
207 {
208 if (!win || win != input->caret)
209 {
210 input->caret_rect.left = 0;
211 input->caret_rect.top = 0;
212 input->caret_rect.right = 0;
213 input->caret_rect.bottom = 0;
214 }
215 input->caret = win;
216 input->caret_hide = 1;
217 input->caret_state = 0;
218 }
219
220 /* create a thread input object */
221 static struct thread_input *create_thread_input( struct thread *thread )
222 {
223 struct thread_input *input;
224
225 if ((input = alloc_object( &thread_input_ops )))
226 {
227 input->focus = 0;
228 input->capture = 0;
229 input->active = 0;
230 input->menu_owner = 0;
231 input->move_size = 0;
232 list_init( &input->msg_list );
233 set_caret_window( input, 0 );
234 memset( input->keystate, 0, sizeof(input->keystate) );
235
236 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
237 {
238 release_object( input );
239 return NULL;
240 }
241 }
242 return input;
243 }
244
245 /* release the thread input data of a given thread */
246 static inline void release_thread_input( struct thread *thread )
247 {
248 struct thread_input *input = thread->queue->input;
249
250 if (!input) return;
251 release_object( input );
252 thread->queue->input = NULL;
253 }
254
255 /* create a message queue object */
256 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
257 {
258 struct msg_queue *queue;
259 int i;
260
261 if (!input && !(input = create_thread_input( thread ))) return NULL;
262 if ((queue = alloc_object( &msg_queue_ops )))
263 {
264 queue->fd = NULL;
265 queue->wake_bits = 0;
266 queue->wake_mask = 0;
267 queue->changed_bits = 0;
268 queue->changed_mask = 0;
269 queue->paint_count = 0;
270 queue->quit_message = 0;
271 queue->recv_result = NULL;
272 queue->next_timer_id = 1;
273 queue->timeout = NULL;
274 queue->input = (struct thread_input *)grab_object( input );
275 queue->hooks = NULL;
276 queue->last_get_msg = current_time;
277 list_init( &queue->send_result );
278 list_init( &queue->callback_result );
279 list_init( &queue->pending_timers );
280 list_init( &queue->expired_timers );
281 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
282
283 thread->queue = queue;
284 if (!thread->process->queue)
285 thread->process->queue = (struct msg_queue *)grab_object( queue );
286 }
287 release_object( input );
288 return queue;
289 }
290
291 /* free the message queue of a thread at thread exit */
292 void free_msg_queue( struct thread *thread )
293 {
294 struct process *process = thread->process;
295
296 remove_thread_hooks( thread );
297 if (!thread->queue) return;
298 if (process->queue == thread->queue) /* is it the process main queue? */
299 {
300 release_object( process->queue );
301 process->queue = NULL;
302 if (process->idle_event)
303 {
304 set_event( process->idle_event );
305 release_object( process->idle_event );
306 process->idle_event = NULL;
307 }
308 }
309 release_object( thread->queue );
310 thread->queue = NULL;
311 }
312
313 /* get the hook table for a given thread */
314 struct hook_table *get_queue_hooks( struct thread *thread )
315 {
316 if (!thread->queue) return NULL;
317 return thread->queue->hooks;
318 }
319
320 /* set the hook table for a given thread, allocating the queue if needed */
321 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
322 {
323 struct msg_queue *queue = thread->queue;
324 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
325 if (queue->hooks) release_object( queue->hooks );
326 queue->hooks = hooks;
327 }
328
329 /* check the queue status */
330 static inline int is_signaled( struct msg_queue *queue )
331 {
332 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
333 }
334
335 /* set some queue bits */
336 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
337 {
338 queue->wake_bits |= bits;
339 queue->changed_bits |= bits;
340 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
341 }
342
343 /* clear some queue bits */
344 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
345 {
346 queue->wake_bits &= ~bits;
347 queue->changed_bits &= ~bits;
348 }
349
350 /* check whether msg is a keyboard message */
351 static inline int is_keyboard_msg( struct message *msg )
352 {
353 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
354 }
355
356 /* check if message is matched by the filter */
357 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
358 {
359 return (msg >= first && msg <= last);
360 }
361
362 /* check whether a message filter contains at least one potential hardware message */
363 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
364 {
365 /* hardware message ranges are (in numerical order):
366 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
367 * WM_KEYFIRST .. WM_KEYLAST
368 * WM_MOUSEFIRST .. WM_MOUSELAST
369 */
370 if (last < WM_NCMOUSEFIRST) return 0;
371 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
372 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
373 if (first > WM_MOUSELAST) return 0;
374 return 1;
375 }
376
377 /* get the QS_* bit corresponding to a given hardware message */
378 static inline int get_hardware_msg_bit( struct message *msg )
379 {
380 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
381 if (is_keyboard_msg( msg )) return QS_KEY;
382 return QS_MOUSEBUTTON;
383 }
384
385 /* get the current thread queue, creating it if needed */
386 static inline struct msg_queue *get_current_queue(void)
387 {
388 struct msg_queue *queue = current->queue;
389 if (!queue) queue = create_msg_queue( current, NULL );
390 return queue;
391 }
392
393 /* get a (pseudo-)unique id to tag hardware messages */
394 static inline unsigned int get_unique_id(void)
395 {
396 static unsigned int id;
397 if (!++id) id = 1; /* avoid an id of 0 */
398 return id;
399 }
400
401 /* try to merge a message with the last in the list; return 1 if successful */
402 static int merge_message( struct thread_input *input, const struct message *msg )
403 {
404 struct message *prev;
405 struct list *ptr = list_tail( &input->msg_list );
406
407 if (!ptr) return 0;
408 prev = LIST_ENTRY( ptr, struct message, entry );
409 if (prev->result) return 0;
410 if (prev->win != msg->win) return 0;
411 if (prev->msg != msg->msg) return 0;
412 if (prev->type != msg->type) return 0;
413 /* now we can merge it */
414 prev->wparam = msg->wparam;
415 prev->lparam = msg->lparam;
416 prev->x = msg->x;
417 prev->y = msg->y;
418 prev->time = msg->time;
419 prev->info = msg->info;
420 return 1;
421 }
422
423 /* free a result structure */
424 static void free_result( struct message_result *result )
425 {
426 if (result->timeout) remove_timeout_user( result->timeout );
427 free( result->data );
428 if (result->callback_msg) free_message( result->callback_msg );
429 free( result );
430 }
431
432 /* remove the result from the sender list it is on */
433 static inline void remove_result_from_sender( struct message_result *result )
434 {
435 assert( result->sender );
436
437 list_remove( &result->sender_entry );
438 result->sender = NULL;
439 if (!result->receiver) free_result( result );
440 }
441
442 /* store the message result in the appropriate structure */
443 static void store_message_result( struct message_result *res, unsigned long result,
444 unsigned int error )
445 {
446 res->result = result;
447 res->error = error;
448 res->replied = 1;
449 if (res->timeout)
450 {
451 remove_timeout_user( res->timeout );
452 res->timeout = NULL;
453 }
454 if (res->sender)
455 {
456 if (res->callback_msg)
457 {
458 /* queue the callback message in the sender queue */
459 struct callback_msg_data *data = res->callback_msg->data;
460 data->result = result;
461 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
462 set_queue_bits( res->sender, QS_SENDMESSAGE );
463 res->callback_msg = NULL;
464 remove_result_from_sender( res );
465 }
466 else
467 {
468 /* wake sender queue if waiting on this result */
469 if (list_head(&res->sender->send_result) == &res->sender_entry)
470 set_queue_bits( res->sender, QS_SMRESULT );
471 }
472 }
473
474 }
475
476 /* free a message when deleting a queue or window */
477 static void free_message( struct message *msg )
478 {
479 struct message_result *result = msg->result;
480 if (result)
481 {
482 result->msg = NULL;
483 if (result->sender)
484 {
485 result->receiver = NULL;
486 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
487 }
488 else free_result( result );
489 }
490 free( msg->data );
491 free( msg );
492 }
493
494 /* remove (and free) a message from a message list */
495 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
496 enum message_kind kind )
497 {
498 list_remove( &msg->entry );
499 switch(kind)
500 {
501 case SEND_MESSAGE:
502 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
503 break;
504 case POST_MESSAGE:
505 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
506 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
507 break;
508 }
509 free_message( msg );
510 }
511
512 /* message timed out without getting a reply */
513 static void result_timeout( void *private )
514 {
515 struct message_result *result = private;
516
517 assert( !result->replied );
518
519 result->timeout = NULL;
520
521 if (result->msg) /* not received yet */
522 {
523 struct message *msg = result->msg;
524
525 result->msg = NULL;
526 msg->result = NULL;
527 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
528 result->receiver = NULL;
529 if (!result->sender)
530 {
531 free_result( result );
532 return;
533 }
534 }
535
536 store_message_result( result, 0, STATUS_TIMEOUT );
537 }
538
539 /* allocate and fill a message result structure */
540 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
541 struct msg_queue *recv_queue,
542 struct message *msg, timeout_t timeout )
543 {
544 struct message_result *result = mem_alloc( sizeof(*result) );
545 if (result)
546 {
547 result->msg = msg;
548 result->sender = send_queue;
549 result->receiver = recv_queue;
550 result->replied = 0;
551 result->data = NULL;
552 result->data_size = 0;
553 result->timeout = NULL;
554
555 if (msg->type == MSG_CALLBACK)
556 {
557 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
558
559 if (!callback_msg)
560 {
561 free( result );
562 return NULL;
563 }
564 callback_msg->type = MSG_CALLBACK_RESULT;
565 callback_msg->win = msg->win;
566 callback_msg->msg = msg->msg;
567 callback_msg->wparam = 0;
568 callback_msg->lparam = 0;
569 callback_msg->time = get_tick_count();
570 callback_msg->x = 0;
571 callback_msg->y = 0;
572 callback_msg->info = 0;
573 callback_msg->result = NULL;
574 /* steal the data from the original message */
575 callback_msg->data = msg->data;
576 callback_msg->data_size = msg->data_size;
577 msg->data = NULL;
578 msg->data_size = 0;
579
580 result->callback_msg = callback_msg;
581 list_add_head( &send_queue->callback_result, &result->sender_entry );
582 }
583 else
584 {
585 result->callback_msg = NULL;
586 list_add_head( &send_queue->send_result, &result->sender_entry );
587 }
588
589 if (timeout != TIMEOUT_INFINITE)
590 result->timeout = add_timeout_user( timeout, result_timeout, result );
591 }
592 return result;
593 }
594
595 /* receive a message, removing it from the sent queue */
596 static void receive_message( struct msg_queue *queue, struct message *msg,
597 struct get_message_reply *reply )
598 {
599 struct message_result *result = msg->result;
600
601 reply->total = msg->data_size;
602 if (msg->data_size > get_reply_max_size())
603 {
604 set_error( STATUS_BUFFER_OVERFLOW );
605 return;
606 }
607 reply->type = msg->type;
608 reply->win = msg->win;
609 reply->msg = msg->msg;
610 reply->wparam = msg->wparam;
611 reply->lparam = msg->lparam;
612 reply->x = msg->x;
613 reply->y = msg->y;
614 reply->time = msg->time;
615 reply->info = msg->info;
616
617 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
618
619 list_remove( &msg->entry );
620 /* put the result on the receiver result stack */
621 if (result)
622 {
623 result->msg = NULL;
624 result->recv_next = queue->recv_result;
625 queue->recv_result = result;
626 }
627 free( msg );
628 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
629 }
630
631 /* set the result of the current received message */
632 static void reply_message( struct msg_queue *queue, unsigned long result,
633 unsigned int error, int remove, const void *data, data_size_t len )
634 {
635 struct message_result *res = queue->recv_result;
636
637 if (remove)
638 {
639 queue->recv_result = res->recv_next;
640 res->receiver = NULL;
641 if (!res->sender) /* no one waiting for it */
642 {
643 free_result( res );
644 return;
645 }
646 }
647 if (!res->replied)
648 {
649 if (len && (res->data = memdup( data, len ))) res->data_size = len;
650 store_message_result( res, result, error );
651 }
652 }
653
654 /* retrieve a posted message */
655 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
656 unsigned int first, unsigned int last, unsigned int flags,
657 struct get_message_reply *reply )
658 {
659 struct message *msg;
660
661 /* check against the filters */
662 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
663 {
664 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
665 if (!check_msg_filter( msg->msg, first, last )) continue;
666 goto found; /* found one */
667 }
668 return 0;
669
670 /* return it to the app */
671 found:
672 reply->total = msg->data_size;
673 if (msg->data_size > get_reply_max_size())
674 {
675 set_error( STATUS_BUFFER_OVERFLOW );
676 return 1;
677 }
678 reply->type = msg->type;
679 reply->win = msg->win;
680 reply->msg = msg->msg;
681 reply->wparam = msg->wparam;
682 reply->lparam = msg->lparam;
683 reply->x = msg->x;
684 reply->y = msg->y;
685 reply->time = msg->time;
686 reply->info = msg->info;
687
688 if (flags & PM_REMOVE)
689 {
690 if (msg->data)
691 {
692 set_reply_data_ptr( msg->data, msg->data_size );
693 msg->data = NULL;
694 msg->data_size = 0;
695 }
696 remove_queue_message( queue, msg, POST_MESSAGE );
697 }
698 else if (msg->data) set_reply_data( msg->data, msg->data_size );
699
700 return 1;
701 }
702
703 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
704 struct get_message_reply *reply )
705 {
706 if (queue->quit_message)
707 {
708 reply->total = 0;
709 reply->type = MSG_POSTED;
710 reply->win = NULL;
711 reply->msg = WM_QUIT;
712 reply->wparam = queue->exit_code;
713 reply->lparam = 0;
714 reply->x = 0;
715 reply->y = 0;
716 reply->time = get_tick_count();
717 reply->info = 0;
718
719 if (flags & PM_REMOVE)
720 {
721 queue->quit_message = 0;
722 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
723 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
724 }
725 return 1;
726 }
727 else
728 return 0;
729 }
730
731 /* empty a message list and free all the messages */
732 static void empty_msg_list( struct list *list )
733 {
734 struct list *ptr;
735
736 while ((ptr = list_head( list )) != NULL)
737 {
738 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
739 list_remove( &msg->entry );
740 free_message( msg );
741 }
742 }
743
744 /* cleanup all pending results when deleting a queue */
745 static void cleanup_results( struct msg_queue *queue )
746 {
747 struct list *entry;
748
749 while ((entry = list_head( &queue->send_result )) != NULL)
750 {
751 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
752 }
753
754 while ((entry = list_head( &queue->callback_result )) != NULL)
755 {
756 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
757 }
758
759 while (queue->recv_result)
760 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
761 }
762
763 /* check if the thread owning the queue is hung (not checking for messages) */
764 static int is_queue_hung( struct msg_queue *queue )
765 {
766 struct wait_queue_entry *entry;
767
768 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
769 return 0; /* less than 5 seconds since last get message -> not hung */
770
771 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
772 {
773 if (entry->thread->queue == queue)
774 return 0; /* thread is waiting on queue -> not hung */
775 }
776 return 1;
777 }
778
779 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
780 {
781 struct msg_queue *queue = (struct msg_queue *)obj;
782 struct process *process = entry->thread->process;
783
784 /* a thread can only wait on its own queue */
785 if (entry->thread->queue != queue)
786 {
787 set_error( STATUS_ACCESS_DENIED );
788 return 0;
789 }
790 /* if waiting on the main process queue, set the idle event */
791 if (process->queue == queue)
792 {
793 if (process->idle_event) set_event( process->idle_event );
794 }
795 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
796 set_fd_events( queue->fd, POLLIN );
797 add_queue( obj, entry );
798 return 1;
799 }
800
801 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
802 {
803 struct msg_queue *queue = (struct msg_queue *)obj;
804 struct process *process = entry->thread->process;
805
806 remove_queue( obj, entry );
807 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
808 set_fd_events( queue->fd, 0 );
809
810 assert( entry->thread->queue == queue );
811
812 /* if waiting on the main process queue, reset the idle event */
813 if (process->queue == queue)
814 {
815 if (process->idle_event) reset_event( process->idle_event );
816 }
817 }
818
819 static void msg_queue_dump( struct object *obj, int verbose )
820 {
821 struct msg_queue *queue = (struct msg_queue *)obj;
822 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
823 queue->wake_bits, queue->wake_mask );
824 }
825
826 static int msg_queue_signaled( struct object *obj, struct thread *thread )
827 {
828 struct msg_queue *queue = (struct msg_queue *)obj;
829 int ret = 0;
830
831 if (queue->fd)
832 {
833 if ((ret = check_fd_events( queue->fd, POLLIN )))
834 /* stop waiting on select() if we are signaled */
835 set_fd_events( queue->fd, 0 );
836 else if (!list_empty( &obj->wait_queue ))
837 /* restart waiting on poll() if we are no longer signaled */
838 set_fd_events( queue->fd, POLLIN );
839 }
840 return ret || is_signaled( queue );
841 }
842
843 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
844 {
845 struct msg_queue *queue = (struct msg_queue *)obj;
846 queue->wake_mask = 0;
847 queue->changed_mask = 0;
848 return 0; /* Not abandoned */
849 }
850
851 static void msg_queue_destroy( struct object *obj )
852 {
853 struct msg_queue *queue = (struct msg_queue *)obj;
854 struct list *ptr;
855 int i;
856
857 cleanup_results( queue );
858 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
859
860 while ((ptr = list_head( &queue->pending_timers )))
861 {
862 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
863 list_remove( &timer->entry );
864 free( timer );
865 }
866 while ((ptr = list_head( &queue->expired_timers )))
867 {
868 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
869 list_remove( &timer->entry );
870 free( timer );
871 }
872 if (queue->timeout) remove_timeout_user( queue->timeout );
873 if (queue->input) release_object( queue->input );
874 if (queue->hooks) release_object( queue->hooks );
875 if (queue->fd) release_object( queue->fd );
876 }
877
878 static void msg_queue_poll_event( struct fd *fd, int event )
879 {
880 struct msg_queue *queue = get_fd_user( fd );
881 assert( queue->obj.ops == &msg_queue_ops );
882
883 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
884 wake_up( &queue->obj, 0 );
885 }
886
887 static void thread_input_dump( struct object *obj, int verbose )
888 {
889 struct thread_input *input = (struct thread_input *)obj;
890 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
891 input->focus, input->capture, input->active );
892 }
893
894 static void thread_input_destroy( struct object *obj )
895 {
896 struct thread_input *input = (struct thread_input *)obj;
897
898 if (foreground_input == input) foreground_input = NULL;
899 empty_msg_list( &input->msg_list );
900 if (input->desktop) release_object( input->desktop );
901 }
902
903 /* fix the thread input data when a window is destroyed */
904 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
905 {
906 struct thread_input *input = queue->input;
907
908 if (window == input->focus) input->focus = 0;
909 if (window == input->capture) input->capture = 0;
910 if (window == input->active) input->active = 0;
911 if (window == input->menu_owner) input->menu_owner = 0;
912 if (window == input->move_size) input->move_size = 0;
913 if (window == input->caret) set_caret_window( input, 0 );
914 }
915
916 /* check if the specified window can be set in the input data of a given queue */
917 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
918 {
919 struct thread *thread;
920 int ret = 0;
921
922 if (!window) return 1; /* we can always clear the data */
923
924 if ((thread = get_window_thread( window )))
925 {
926 ret = (queue->input == thread->queue->input);
927 if (!ret) set_error( STATUS_ACCESS_DENIED );
928 release_object( thread );
929 }
930 else set_error( STATUS_INVALID_HANDLE );
931
932 return ret;
933 }
934
935 /* make sure the specified thread has a queue */
936 int init_thread_queue( struct thread *thread )
937 {
938 if (thread->queue) return 1;
939 return (create_msg_queue( thread, NULL ) != NULL);
940 }
941
942 /* attach two thread input data structures */
943 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
944 {
945 struct desktop *desktop;
946 struct thread_input *input;
947
948 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
949 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
950 input = (struct thread_input *)grab_object( thread_to->queue->input );
951 if (input->desktop != desktop)
952 {
953 set_error( STATUS_ACCESS_DENIED );
954 release_object( input );
955 release_object( desktop );
956 return 0;
957 }
958 release_object( desktop );
959
960 if (thread_from->queue)
961 {
962 release_thread_input( thread_from );
963 thread_from->queue->input = input;
964 }
965 else
966 {
967 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
968 }
969 memset( input->keystate, 0, sizeof(input->keystate) );
970 return 1;
971 }
972
973 /* detach two thread input data structures */
974 void detach_thread_input( struct thread *thread_from )
975 {
976 struct thread_input *input;
977
978 if ((input = create_thread_input( thread_from )))
979 {
980 release_thread_input( thread_from );
981 thread_from->queue->input = input;
982 }
983 }
984
985
986 /* set the next timer to expire */
987 static void set_next_timer( struct msg_queue *queue )
988 {
989 struct list *ptr;
990
991 if (queue->timeout)
992 {
993 remove_timeout_user( queue->timeout );
994 queue->timeout = NULL;
995 }
996 if ((ptr = list_head( &queue->pending_timers )))
997 {
998 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
999 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1000 }
1001 /* set/clear QS_TIMER bit */
1002 if (list_empty( &queue->expired_timers ))
1003 clear_queue_bits( queue, QS_TIMER );
1004 else
1005 set_queue_bits( queue, QS_TIMER );
1006 }
1007
1008 /* find a timer from its window and id */
1009 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1010 unsigned int msg, unsigned long id )
1011 {
1012 struct list *ptr;
1013
1014 /* we need to search both lists */
1015
1016 LIST_FOR_EACH( ptr, &queue->pending_timers )
1017 {
1018 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1019 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1020 }
1021 LIST_FOR_EACH( ptr, &queue->expired_timers )
1022 {
1023 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1024 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1025 }
1026 return NULL;
1027 }
1028
1029 /* callback for the next timer expiration */
1030 static void timer_callback( void *private )
1031 {
1032 struct msg_queue *queue = private;
1033 struct list *ptr;
1034
1035 queue->timeout = NULL;
1036 /* move on to the next timer */
1037 ptr = list_head( &queue->pending_timers );
1038 list_remove( ptr );
1039 list_add_tail( &queue->expired_timers, ptr );
1040 set_next_timer( queue );
1041 }
1042
1043 /* link a timer at its rightful place in the queue list */
1044 static void link_timer( struct msg_queue *queue, struct timer *timer )
1045 {
1046 struct list *ptr;
1047
1048 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1049 {
1050 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1051 if (t->when >= timer->when) break;
1052 }
1053 list_add_before( ptr, &timer->entry );
1054 }
1055
1056 /* remove a timer from the queue timer list and free it */
1057 static void free_timer( struct msg_queue *queue, struct timer *timer )
1058 {
1059 list_remove( &timer->entry );
1060 free( timer );
1061 set_next_timer( queue );
1062 }
1063
1064 /* restart an expired timer */
1065 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1066 {
1067 list_remove( &timer->entry );
1068 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1069 link_timer( queue, timer );
1070 set_next_timer( queue );
1071 }
1072
1073 /* find an expired timer matching the filtering parameters */
1074 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1075 unsigned int get_first, unsigned int get_last,
1076 int remove )
1077 {
1078 struct list *ptr;
1079
1080 LIST_FOR_EACH( ptr, &queue->expired_timers )
1081 {
1082 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1083 if (win && timer->win != win) continue;
1084 if (check_msg_filter( timer->msg, get_first, get_last ))
1085 {
1086 if (remove) restart_timer( queue, timer );
1087 return timer;
1088 }
1089 }
1090 return NULL;
1091 }
1092
1093 /* add a timer */
1094 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1095 {
1096 struct timer *timer = mem_alloc( sizeof(*timer) );
1097 if (timer)
1098 {
1099 timer->rate = max( rate, 1 );
1100 timer->when = current_time + (timeout_t)timer->rate * 10000;
1101 link_timer( queue, timer );
1102 /* check if we replaced the next timer */
1103 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1104 }
1105 return timer;
1106 }
1107
1108 /* change the input key state for a given key */
1109 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1110 {
1111 if (down)
1112 {
1113 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1114 input->keystate[key] |= 0x80;
1115 }
1116 else input->keystate[key] &= ~0x80;
1117 }
1118
1119 /* update the input key state for a keyboard message */
1120 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1121 {
1122 unsigned char key;
1123 int down = 0, extended;
1124
1125 switch (msg->msg)
1126 {
1127 case WM_LBUTTONDOWN:
1128 down = 1;
1129 /* fall through */
1130 case WM_LBUTTONUP:
1131 set_input_key_state( input, VK_LBUTTON, down );
1132 break;
1133 case WM_MBUTTONDOWN:
1134 down = 1;
1135 /* fall through */
1136 case WM_MBUTTONUP:
1137 set_input_key_state( input, VK_MBUTTON, down );
1138 break;
1139 case WM_RBUTTONDOWN:
1140 down = 1;
1141 /* fall through */
1142 case WM_RBUTTONUP:
1143 set_input_key_state( input, VK_RBUTTON, down );
1144 break;
1145 case WM_XBUTTONDOWN:
1146 down = 1;
1147 /* fall through */
1148 case WM_XBUTTONUP:
1149 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1150 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1151 break;
1152 case WM_KEYDOWN:
1153 case WM_SYSKEYDOWN:
1154 down = 1;
1155 /* fall through */
1156 case WM_KEYUP:
1157 case WM_SYSKEYUP:
1158 key = (unsigned char)msg->wparam;
1159 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1160 set_input_key_state( input, key, down );
1161 switch(key)
1162 {
1163 case VK_SHIFT:
1164 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1165 break;
1166 case VK_CONTROL:
1167 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1168 break;
1169 case VK_MENU:
1170 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1171 break;
1172 case VK_LCONTROL:
1173 case VK_RCONTROL:
1174 set_input_key_state( input, VK_CONTROL, down );
1175 break;
1176 case VK_LMENU:
1177 case VK_RMENU:
1178 set_input_key_state( input, VK_MENU, down );
1179 break;
1180 case VK_LSHIFT:
1181 case VK_RSHIFT:
1182 set_input_key_state( input, VK_SHIFT, down );
1183 break;
1184 }
1185 break;
1186 }
1187 }
1188
1189 /* release the hardware message currently being processed by the given thread */
1190 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1191 int remove, user_handle_t new_win )
1192 {
1193 struct thread_input *input = queue->input;
1194 struct message *msg;
1195
1196 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1197 {
1198 if (msg->unique_id == hw_id) break;
1199 }
1200 if (&msg->entry == &input->msg_list) return; /* not found */
1201
1202 /* clear the queue bit for that message */
1203 if (remove || new_win)
1204 {
1205 struct message *other;
1206 int clr_bit;
1207
1208 clr_bit = get_hardware_msg_bit( msg );
1209 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1210 {
1211 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1212 {
1213 clr_bit = 0;
1214 break;
1215 }
1216 }
1217 if (clr_bit) clear_queue_bits( queue, clr_bit );
1218 }
1219
1220 if (new_win) /* set the new window */
1221 {
1222 struct thread *owner = get_window_thread( new_win );
1223 if (owner)
1224 {
1225 if (owner->queue->input == input)
1226 {
1227 msg->win = new_win;
1228 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1229 remove = 0;
1230 }
1231 release_object( owner );
1232 }
1233 }
1234 if (remove)
1235 {
1236 update_input_key_state( input, msg );
1237 list_remove( &msg->entry );
1238 free_message( msg );
1239 }
1240 }
1241
1242 /* find the window that should receive a given hardware message */
1243 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1244 unsigned int *msg_code )
1245 {
1246 user_handle_t win = 0;
1247
1248 *msg_code = msg->msg;
1249 if (is_keyboard_msg( msg ))
1250 {
1251 if (input && !(win = input->focus))
1252 {
1253 win = input->active;
1254 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1255 }
1256 }
1257 else /* mouse message */
1258 {
1259 if (!input || !(win = input->capture))
1260 {
1261 if (!(win = msg->win) || !is_window_visible( win ))
1262 {
1263 if (input) win = window_from_point( input->desktop, msg->x, msg->y );
1264 }
1265 }
1266 }
1267 return win;
1268 }
1269
1270 /* queue a hardware message into a given thread input */
1271 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1272 {
1273 user_handle_t win;
1274 struct thread *thread;
1275 struct thread_input *input = queue ? queue->input : foreground_input;
1276 unsigned int msg_code;
1277
1278 last_input_time = get_tick_count();
1279 win = find_hardware_message_window( input, msg, &msg_code );
1280 if (!win || !(thread = get_window_thread(win)))
1281 {
1282 if (input) update_input_key_state( input, msg );
1283 free( msg );
1284 return;
1285 }
1286 input = thread->queue->input;
1287
1288 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1289 else
1290 {
1291 msg->unique_id = 0; /* will be set once we return it to the app */
1292 list_add_tail( &input->msg_list, &msg->entry );
1293 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1294 }
1295 release_object( thread );
1296 }
1297
1298 /* check message filter for a hardware message */
1299 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1300 user_handle_t filter_win, unsigned int first, unsigned int last )
1301 {
1302 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1303 {
1304 /* we can only test the window for a keyboard message since the
1305 * dest window for a mouse message depends on hittest */
1306 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1307 return 0;
1308 /* the message code is final for a keyboard message, we can simply check it */
1309 return check_msg_filter( msg_code, first, last );
1310 }
1311 else /* mouse message */
1312 {
1313 /* we need to check all possible values that the message can have in the end */
1314
1315 if (check_msg_filter( msg_code, first, last )) return 1;
1316 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1317
1318 /* all other messages can become non-client messages */
1319 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1320
1321 /* clicks can become double-clicks or non-client double-clicks */
1322 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1323 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1324 {
1325 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1326 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1327 }
1328 return 0;
1329 }
1330 }
1331
1332
1333 /* find a hardware message for the given queue */
1334 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1335 unsigned int first, unsigned int last, struct get_message_reply *reply )
1336 {
1337 struct thread_input *input = thread->queue->input;
1338 struct thread *win_thread;
1339 struct list *ptr;
1340 user_handle_t win;
1341 int clear_bits, got_one = 0;
1342 unsigned int msg_code;
1343
1344 ptr = list_head( &input->msg_list );
1345 if (hw_id)
1346 {
1347 while (ptr)
1348 {
1349 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1350 if (msg->unique_id == hw_id) break;
1351 ptr = list_next( &input->msg_list, ptr );
1352 }
1353 if (!ptr) ptr = list_head( &input->msg_list );
1354 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1355 }
1356
1357 if (ptr == list_head( &input->msg_list ))
1358 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1359 else
1360 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1361
1362 while (ptr)
1363 {
1364 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1365 ptr = list_next( &input->msg_list, ptr );
1366 win = find_hardware_message_window( input, msg, &msg_code );
1367 if (!win || !(win_thread = get_window_thread( win )))
1368 {
1369 /* no window at all, remove it */
1370 update_input_key_state( input, msg );
1371 list_remove( &msg->entry );
1372 free_message( msg );
1373 continue;
1374 }
1375 if (win_thread != thread)
1376 {
1377 if (win_thread->queue->input == input)
1378 {
1379 /* wake the other thread */
1380 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1381 got_one = 1;
1382 }
1383 else
1384 {
1385 /* for another thread input, drop it */
1386 update_input_key_state( input, msg );
1387 list_remove( &msg->entry );
1388 free_message( msg );
1389 }
1390 release_object( win_thread );
1391 continue;
1392 }
1393 release_object( win_thread );
1394
1395 /* if we already got a message for another thread, or if it doesn't
1396 * match the filter we skip it */
1397 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1398 {
1399 clear_bits &= ~get_hardware_msg_bit( msg );
1400 continue;
1401 }
1402 /* now we can return it */
1403 if (!msg->unique_id) msg->unique_id = get_unique_id();
1404 reply->type = MSG_HARDWARE;
1405 reply->win = win;
1406 reply->msg = msg_code;
1407 reply->wparam = msg->wparam;
1408 reply->lparam = msg->lparam;
1409 reply->x = msg->x;
1410 reply->y = msg->y;
1411 reply->time = msg->time;
1412 reply->info = msg->info;
1413 reply->hw_id = msg->unique_id;
1414 return 1;
1415 }
1416 /* nothing found, clear the hardware queue bits */
1417 clear_queue_bits( thread->queue, clear_bits );
1418 return 0;
1419 }
1420
1421 /* increment (or decrement if 'incr' is negative) the queue paint count */
1422 void inc_queue_paint_count( struct thread *thread, int incr )
1423 {
1424 struct msg_queue *queue = thread->queue;
1425
1426 assert( queue );
1427
1428 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1429
1430 if (queue->paint_count)
1431 set_queue_bits( queue, QS_PAINT );
1432 else
1433 clear_queue_bits( queue, QS_PAINT );
1434 }
1435
1436
1437 /* remove all messages and timers belonging to a certain window */
1438 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1439 {
1440 struct msg_queue *queue = thread->queue;
1441 struct list *ptr;
1442 int i;
1443
1444 if (!queue) return;
1445
1446 /* remove timers */
1447
1448 ptr = list_head( &queue->pending_timers );
1449 while (ptr)
1450 {
1451 struct list *next = list_next( &queue->pending_timers, ptr );
1452 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1453 if (timer->win == win) free_timer( queue, timer );
1454 ptr = next;
1455 }
1456 ptr = list_head( &queue->expired_timers );
1457 while (ptr)
1458 {
1459 struct list *next = list_next( &queue->expired_timers, ptr );
1460 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1461 if (timer->win == win) free_timer( queue, timer );
1462 ptr = next;
1463 }
1464
1465 /* remove messages */
1466 for (i = 0; i < NB_MSG_KINDS; i++)
1467 {
1468 struct list *ptr, *next;
1469
1470 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1471 {
1472 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1473 if (msg->win == win) remove_queue_message( queue, msg, i );
1474 }
1475 }
1476
1477 thread_input_cleanup_window( queue, win );
1478 }
1479
1480 /* post a message to a window; used by socket handling */
1481 void post_message( user_handle_t win, unsigned int message,
1482 unsigned long wparam, unsigned long lparam )
1483 {
1484 struct message *msg;
1485 struct thread *thread = get_window_thread( win );
1486
1487 if (!thread) return;
1488
1489 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1490 {
1491 msg->type = MSG_POSTED;
1492 msg->win = get_user_full_handle( win );
1493 msg->msg = message;
1494 msg->wparam = wparam;
1495 msg->lparam = lparam;
1496 msg->time = get_tick_count();
1497 msg->x = 0;
1498 msg->y = 0;
1499 msg->info = 0;
1500 msg->result = NULL;
1501 msg->data = NULL;
1502 msg->data_size = 0;
1503
1504 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1505 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1506 }
1507 release_object( thread );
1508 }
1509
1510 /* post a win event */
1511 void post_win_event( struct thread *thread, unsigned int event,
1512 user_handle_t win, unsigned int object_id,
1513 unsigned int child_id, void *hook_proc,
1514 const WCHAR *module, data_size_t module_size,
1515 user_handle_t hook)
1516 {
1517 struct message *msg;
1518
1519 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1520 {
1521 struct winevent_msg_data *data;
1522
1523 msg->type = MSG_WINEVENT;
1524 msg->win = get_user_full_handle( win );
1525 msg->msg = event;
1526 msg->wparam = object_id;
1527 msg->lparam = child_id;
1528 msg->time = get_tick_count();
1529 msg->x = 0;
1530 msg->y = 0;
1531 msg->info = 0;
1532 msg->result = NULL;
1533
1534 if ((data = malloc( sizeof(*data) + module_size )))
1535 {
1536 data->hook = hook;
1537 data->tid = get_thread_id( current );
1538 data->hook_proc = hook_proc;
1539 memcpy( data + 1, module, module_size );
1540
1541 msg->data = data;
1542 msg->data_size = sizeof(*data) + module_size;
1543
1544 if (debug_level > 1)
1545 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1546 get_thread_id(thread), event, win, object_id, child_id );
1547 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1548 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1549 }
1550 else
1551 free( msg );
1552 }
1553 }
1554
1555 /* get the message queue of the current thread */
1556 DECL_HANDLER(get_msg_queue)
1557 {
1558 struct msg_queue *queue = get_current_queue();
1559
1560 reply->handle = 0;
1561 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1562 }
1563
1564
1565 /* set the file descriptor associated to the current thread queue */
1566 DECL_HANDLER(set_queue_fd)
1567 {
1568 struct msg_queue *queue = get_current_queue();
1569 struct file *file;
1570 int unix_fd;
1571
1572 if (queue->fd) /* fd can only be set once */
1573 {
1574 set_error( STATUS_ACCESS_DENIED );
1575 return;
1576 }
1577 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1578
1579 if ((unix_fd = get_file_unix_fd( file )) != -1)
1580 {
1581 if ((unix_fd = dup( unix_fd )) != -1)
1582 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1583 else
1584 file_set_error();
1585 }
1586 release_object( file );
1587 }
1588
1589
1590 /* set the current message queue wakeup mask */
1591 DECL_HANDLER(set_queue_mask)
1592 {
1593 struct msg_queue *queue = get_current_queue();
1594
1595 if (queue)
1596 {
1597 queue->wake_mask = req->wake_mask;
1598 queue->changed_mask = req->changed_mask;
1599 reply->wake_bits = queue->wake_bits;
1600 reply->changed_bits = queue->changed_bits;
1601 if (is_signaled( queue ))
1602 {
1603 /* if skip wait is set, do what would have been done in the subsequent wait */
1604 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1605 else wake_up( &queue->obj, 0 );
1606 }
1607 }
1608 }
1609
1610
1611 /* get the current message queue status */
1612 DECL_HANDLER(get_queue_status)
1613 {
1614 struct msg_queue *queue = current->queue;
1615 if (queue)
1616 {
1617 reply->wake_bits = queue->wake_bits;
1618 reply->changed_bits = queue->changed_bits;
1619 if (req->clear) queue->changed_bits = 0;
1620 }
1621 else reply->wake_bits = reply->changed_bits = 0;
1622 }
1623
1624
1625 /* send a message to a thread queue */
1626 DECL_HANDLER(send_message)
1627 {
1628 struct message *msg;
1629 struct msg_queue *send_queue = get_current_queue();
1630 struct msg_queue *recv_queue = NULL;
1631 struct thread *thread = NULL;
1632
1633 if (!(thread = get_thread_from_id( req->id ))) return;
1634
1635 if (!(recv_queue = thread->queue))
1636 {
1637 set_error( STATUS_INVALID_PARAMETER );
1638 release_object( thread );
1639 return;
1640 }
1641 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1642 {
1643 set_error( STATUS_TIMEOUT );
1644 release_object( thread );
1645 return;
1646 }
1647
1648 if ((msg = mem_alloc( sizeof(*msg) )))
1649 {
1650 msg->type = req->type;
1651 msg->win = get_user_full_handle( req->win );
1652 msg->msg = req->msg;
1653 msg->wparam = req->wparam;
1654 msg->lparam = req->lparam;
1655 msg->time = get_tick_count();
1656 msg->x = 0;
1657 msg->y = 0;
1658 msg->info = 0;
1659 msg->result = NULL;
1660 msg->data = NULL;
1661 msg->data_size = get_req_data_size();
1662
1663 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1664 {
1665 free( msg );
1666 release_object( thread );
1667 return;
1668 }
1669
1670 switch(msg->type)
1671 {
1672 case MSG_OTHER_PROCESS:
1673 case MSG_ASCII:
1674 case MSG_UNICODE:
1675 case MSG_CALLBACK:
1676 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1677 {
1678 free_message( msg );
1679 break;
1680 }
1681 /* fall through */
1682 case MSG_NOTIFY:
1683 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1684 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1685 break;
1686 case MSG_POSTED:
1687 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1688 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1689 break;
1690 case MSG_HARDWARE: /* should use send_hardware_message instead */
1691 case MSG_CALLBACK_RESULT: /* cannot send this one */
1692 default:
1693 set_error( STATUS_INVALID_PARAMETER );
1694 free( msg );
1695 break;
1696 }
1697 }
1698 release_object( thread );
1699 }
1700
1701 /* send a hardware message to a thread queue */
1702 DECL_HANDLER(send_hardware_message)
1703 {
1704 struct message *msg;
1705 struct msg_queue *recv_queue = NULL;
1706 struct thread *thread = NULL;
1707
1708 if (req->id)
1709 {
1710 if (!(thread = get_thread_from_id( req->id ))) return;
1711 }
1712
1713 if (thread && !(recv_queue = thread->queue))
1714 {
1715 set_error( STATUS_INVALID_PARAMETER );
1716 release_object( thread );
1717 return;
1718 }
1719
1720 if ((msg = mem_alloc( sizeof(*msg) )))
1721 {
1722 msg->type = MSG_HARDWARE;
1723 msg->win = get_user_full_handle( req->win );
1724 msg->msg = req->msg;
1725 msg->wparam = req->wparam;
1726 msg->lparam = req->lparam;
1727 msg->time = req->time;
1728 msg->x = req->x;
1729 msg->y = req->y;
1730 msg->info = req->info;
1731 msg->result = NULL;
1732 msg->data = NULL;
1733 msg->data_size = 0;
1734 queue_hardware_message( recv_queue, msg );
1735 }
1736 if (thread) release_object( thread );
1737 }
1738
1739 /* post a quit message to the current queue */
1740 DECL_HANDLER(post_quit_message)
1741 {
1742 struct msg_queue *queue = get_current_queue();
1743
1744 if (!queue)
1745 return;
1746
1747 queue->quit_message = 1;
1748 queue->exit_code = req->exit_code;
1749 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1750 }
1751
1752 /* get a message from the current queue */
1753 DECL_HANDLER(get_message)
1754 {
1755 struct timer *timer;
1756 struct list *ptr;
1757 struct msg_queue *queue = get_current_queue();
1758 user_handle_t get_win = get_user_full_handle( req->get_win );
1759 unsigned int filter = req->flags >> 16;
1760
1761 reply->active_hooks = get_active_hooks();
1762
1763 if (!queue) return;
1764 queue->last_get_msg = current_time;
1765 if (!filter) filter = QS_ALLINPUT;
1766
1767 /* first check for sent messages */
1768 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1769 {
1770 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1771 receive_message( queue, msg, reply );
1772 return;
1773 }
1774
1775 /* clear changed bits so we can wait on them if we don't find a message */
1776 if (filter & QS_POSTMESSAGE)
1777 {
1778 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1779 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1780 }
1781 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1782 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1783
1784 /* then check for posted messages */
1785 if ((filter & QS_POSTMESSAGE) &&
1786 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1787 return;
1788
1789 /* only check for quit messages if not posted messages pending.
1790 * note: the quit message isn't filtered */
1791 if (get_quit_message( queue, req->flags, reply ))
1792 return;
1793
1794 /* then check for any raw hardware message */
1795 if ((filter & QS_INPUT) &&
1796 filter_contains_hw_range( req->get_first, req->get_last ) &&
1797 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1798 return;
1799
1800 /* now check for WM_PAINT */
1801 if ((filter & QS_PAINT) &&
1802 queue->paint_count &&
1803 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1804 (reply->win = find_window_to_repaint( get_win, current )))
1805 {
1806 reply->type = MSG_POSTED;
1807 reply->msg = WM_PAINT;
1808 reply->wparam = 0;
1809 reply->lparam = 0;
1810 reply->x = 0;
1811 reply->y = 0;
1812 reply->time = get_tick_count();
1813 reply->info = 0;
1814 return;
1815 }
1816
1817 /* now check for timer */
1818 if ((filter & QS_TIMER) &&
1819 (timer = find_expired_timer( queue, get_win, req->get_first,
1820 req->get_last, (req->flags & PM_REMOVE) )))
1821 {
1822 reply->type = MSG_POSTED;
1823 reply->win = timer->win;
1824 reply->msg = timer->msg;
1825 reply->wparam = timer->id;
1826 reply->lparam = timer->lparam;
1827 reply->x = 0;
1828 reply->y = 0;
1829 reply->time = get_tick_count();
1830 reply->info = 0;
1831 return;
1832 }
1833
1834 queue->wake_mask = req->wake_mask;
1835 queue->changed_mask = req->changed_mask;
1836 set_error( STATUS_PENDING ); /* FIXME */
1837 }
1838
1839
1840 /* reply to a sent message */
1841 DECL_HANDLER(reply_message)
1842 {
1843 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1844 else if (current->queue->recv_result)
1845 reply_message( current->queue, req->result, 0, req->remove,
1846 get_req_data(), get_req_data_size() );
1847 }
1848
1849
1850 /* accept the current hardware message */
1851 DECL_HANDLER(accept_hardware_message)
1852 {
1853 if (current->queue)
1854 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1855 else
1856 set_error( STATUS_ACCESS_DENIED );
1857 }
1858
1859
1860 /* retrieve the reply for the last message sent */
1861 DECL_HANDLER(get_message_reply)
1862 {
1863 struct message_result *result;
1864 struct list *entry;
1865 struct msg_queue *queue = current->queue;
1866
1867 if (queue)
1868 {
1869 set_error( STATUS_PENDING );
1870 reply->result = 0;
1871
1872 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1873
1874 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1875 if (result->replied || req->cancel)
1876 {
1877 if (result->replied)
1878 {
1879 reply->result = result->result;
1880 set_error( result->error );
1881 if (result->data)
1882 {
1883 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1884 set_reply_data_ptr( result->data, data_len );
1885 result->data = NULL;
1886 result->data_size = 0;
1887 }
1888 }
1889 remove_result_from_sender( result );
1890
1891 entry = list_head( &queue->send_result );
1892 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1893 else
1894 {
1895 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1896 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1897 }
1898 }
1899 }
1900 else set_error( STATUS_ACCESS_DENIED );
1901 }
1902
1903
1904 /* set a window timer */
1905 DECL_HANDLER(set_win_timer)
1906 {
1907 struct timer *timer;
1908 struct msg_queue *queue;
1909 struct thread *thread = NULL;
1910 user_handle_t win = 0;
1911 unsigned long id = req->id;
1912
1913 if (req->win)
1914 {
1915 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1916 {
1917 set_error( STATUS_INVALID_HANDLE );
1918 return;
1919 }
1920 if (thread->process != current->process)
1921 {
1922 release_object( thread );
1923 set_error( STATUS_ACCESS_DENIED );
1924 return;
1925 }
1926 queue = thread->queue;
1927 /* remove it if it existed already */
1928 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1929 }
1930 else
1931 {
1932 queue = get_current_queue();
1933 /* look for a timer with this id */
1934 if (id && (timer = find_timer( queue, NULL, req->msg, id )))
1935 {
1936 /* free and reuse id */
1937 free_timer( queue, timer );
1938 }
1939 else
1940 {
1941 /* find a free id for it */
1942 do
1943 {
1944 id = queue->next_timer_id;
1945 if (++queue->next_timer_id >= 0x10000) queue->next_timer_id = 1;
1946 }
1947 while (find_timer( queue, 0, req->msg, id ));
1948 }
1949 }
1950
1951 if ((timer = set_timer( queue, req->rate )))
1952 {
1953 timer->win = win;
1954 timer->msg = req->msg;
1955 timer->id = id;
1956 timer->lparam = req->lparam;
1957 reply->id = id;
1958 }
1959 if (thread) release_object( thread );
1960 }
1961
1962 /* kill a window timer */
1963 DECL_HANDLER(kill_win_timer)
1964 {
1965 struct timer *timer;
1966 struct thread *thread;
1967 user_handle_t win = 0;
1968
1969 if (req->win)
1970 {
1971 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1972 {
1973 set_error( STATUS_INVALID_HANDLE );
1974 return;
1975 }
1976 if (thread->process != current->process)
1977 {
1978 release_object( thread );
1979 set_error( STATUS_ACCESS_DENIED );
1980 return;
1981 }
1982 }
1983 else thread = (struct thread *)grab_object( current );
1984
1985 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1986 free_timer( thread->queue, timer );
1987 else
1988 set_error( STATUS_INVALID_PARAMETER );
1989
1990 release_object( thread );
1991 }
1992
1993
1994 /* attach (or detach) thread inputs */
1995 DECL_HANDLER(attach_thread_input)
1996 {
1997 struct thread *thread_from = get_thread_from_id( req->tid_from );
1998 struct thread *thread_to = get_thread_from_id( req->tid_to );
1999
2000 if (!thread_from || !thread_to)
2001 {
2002 if (thread_from) release_object( thread_from );
2003 if (thread_to) release_object( thread_to );
2004 return;
2005 }
2006 if (thread_from != thread_to)
2007 {
2008 if (req->attach) attach_thread_input( thread_from, thread_to );
2009 else
2010 {
2011 if (thread_from->queue && thread_to->queue &&
2012 thread_from->queue->input == thread_to->queue->input)
2013 detach_thread_input( thread_from );
2014 else
2015 set_error( STATUS_ACCESS_DENIED );
2016 }
2017 }
2018 else set_error( STATUS_ACCESS_DENIED );
2019 release_object( thread_from );
2020 release_object( thread_to );
2021 }
2022
2023
2024 /* get thread input data */
2025 DECL_HANDLER(get_thread_input)
2026 {
2027 struct thread *thread = NULL;
2028 struct thread_input *input;
2029
2030 if (req->tid)
2031 {
2032 if (!(thread = get_thread_from_id( req->tid ))) return;
2033 input = thread->queue ? thread->queue->input : NULL;
2034 }
2035 else input = foreground_input; /* get the foreground thread info */
2036
2037 if (input)
2038 {
2039 reply->focus = input->focus;
2040 reply->capture = input->capture;
2041 reply->active = input->active;
2042 reply->menu_owner = input->menu_owner;
2043 reply->move_size = input->move_size;
2044 reply->caret = input->caret;
2045 reply->rect = input->caret_rect;
2046 }
2047 else
2048 {
2049 reply->focus = 0;
2050 reply->capture = 0;
2051 reply->active = 0;
2052 reply->menu_owner = 0;
2053 reply->move_size = 0;
2054 reply->caret = 0;
2055 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2056 }
2057 /* foreground window is active window of foreground thread */
2058 reply->foreground = foreground_input ? foreground_input->active : 0;
2059 if (thread) release_object( thread );
2060 }
2061
2062
2063 /* retrieve queue keyboard state for a given thread */
2064 DECL_HANDLER(get_key_state)
2065 {
2066 struct thread *thread;
2067 struct thread_input *input;
2068
2069 if (!(thread = get_thread_from_id( req->tid ))) return;
2070 input = thread->queue ? thread->queue->input : NULL;
2071 if (input)
2072 {
2073 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2074 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2075 }
2076 release_object( thread );
2077 }
2078
2079
2080 /* set queue keyboard state for a given thread */
2081 DECL_HANDLER(set_key_state)
2082 {
2083 struct thread *thread = NULL;
2084 struct thread_input *input;
2085
2086 if (!(thread = get_thread_from_id( req->tid ))) return;
2087 input = thread->queue ? thread->queue->input : NULL;
2088 if (input)
2089 {
2090 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2091 if (size) memcpy( input->keystate, get_req_data(), size );
2092 }
2093 release_object( thread );
2094 }
2095
2096
2097 /* set the system foreground window */
2098 DECL_HANDLER(set_foreground_window)
2099 {
2100 struct thread *thread;
2101 struct msg_queue *queue = get_current_queue();
2102
2103 reply->previous = foreground_input ? foreground_input->active : 0;
2104 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2105 reply->send_msg_new = FALSE;
2106
2107 if (is_top_level_window( req->handle ) &&
2108 ((thread = get_window_thread( req->handle ))))
2109 {
2110 foreground_input = thread->queue->input;
2111 reply->send_msg_new = (foreground_input != queue->input);
2112 release_object( thread );
2113 }
2114 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2115 }
2116
2117
2118 /* set the current thread focus window */
2119 DECL_HANDLER(set_focus_window)
2120 {
2121 struct msg_queue *queue = get_current_queue();
2122
2123 reply->previous = 0;
2124 if (queue && check_queue_input_window( queue, req->handle ))
2125 {
2126 reply->previous = queue->input->focus;
2127 queue->input->focus = get_user_full_handle( req->handle );
2128 }
2129 }
2130
2131
2132 /* set the current thread active window */
2133 DECL_HANDLER(set_active_window)
2134 {
2135 struct msg_queue *queue = get_current_queue();
2136
2137 reply->previous = 0;
2138 if (queue && check_queue_input_window( queue, req->handle ))
2139 {
2140 if (!req->handle || make_window_active( req->handle ))
2141 {
2142 reply->previous = queue->input->active;
2143 queue->input->active = get_user_full_handle( req->handle );
2144 }
2145 else set_error( STATUS_INVALID_HANDLE );
2146 }
2147 }
2148
2149
2150 /* set the current thread capture window */
2151 DECL_HANDLER(set_capture_window)
2152 {
2153 struct msg_queue *queue = get_current_queue();
2154
2155 reply->previous = reply->full_handle = 0;
2156 if (queue && check_queue_input_window( queue, req->handle ))
2157 {
2158 struct thread_input *input = queue->input;
2159
2160 reply->previous = input->capture;
2161 input->capture = get_user_full_handle( req->handle );
2162 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2163 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2164 reply->full_handle = input->capture;
2165 }
2166 }
2167
2168
2169 /* Set the current thread caret window */
2170 DECL_HANDLER(set_caret_window)
2171 {
2172 struct msg_queue *queue = get_current_queue();
2173
2174 reply->previous = 0;
2175 if (queue && check_queue_input_window( queue, req->handle ))
2176 {
2177 struct thread_input *input = queue->input;
2178
2179 reply->previous = input->caret;
2180 reply->old_rect = input->caret_rect;
2181 reply->old_hide = input->caret_hide;
2182 reply->old_state = input->caret_state;
2183
2184 set_caret_window( input, get_user_full_handle(req->handle) );
2185 input->caret_rect.right = input->caret_rect.left + req->width;
2186 input->caret_rect.bottom = input->caret_rect.top + req->height;
2187 }
2188 }
2189
2190
2191 /* Set the current thread caret information */
2192 DECL_HANDLER(set_caret_info)
2193 {
2194 struct msg_queue *queue = get_current_queue();
2195 struct thread_input *input;
2196
2197 if (!queue) return;
2198 input = queue->input;
2199 reply->full_handle = input->caret;
2200 reply->old_rect = input->caret_rect;
2201 reply->old_hide = input->caret_hide;
2202 reply->old_state = input->caret_state;
2203
2204 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2205 {
2206 set_error( STATUS_ACCESS_DENIED );
2207 return;
2208 }
2209 if (req->flags & SET_CARET_POS)
2210 {
2211 input->caret_rect.right += req->x - input->caret_rect.left;
2212 input->caret_rect.bottom += req->y - input->caret_rect.top;
2213 input->caret_rect.left = req->x;
2214 input->caret_rect.top = req->y;
2215 }
2216 if (req->flags & SET_CARET_HIDE)
2217 {
2218 input->caret_hide += req->hide;
2219 if (input->caret_hide < 0) input->caret_hide = 0;
2220 }
2221 if (req->flags & SET_CARET_STATE)
2222 {
2223 if (req->state == -1) input->caret_state = !input->caret_state;
2224 else input->caret_state = !!req->state;
2225 }
2226 }
2227
2228
2229 /* get the time of the last input event */
2230 DECL_HANDLER(get_last_input_time)
2231 {
2232 reply->time = last_input_time;
2233 }
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