2 * Server-side message queues
4 * Copyright (C) 2000 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
41 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
42 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
44 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
45 #define NB_MSG_KINDS (POST_MESSAGE+1)
50 struct list sender_entry; /* entry in sender list */
51 struct message_result *recv_next; /* next in receiver list */
52 struct msg_queue *sender; /* sender queue */
53 struct msg_queue *receiver; /* receiver queue */
54 int replied; /* has it been replied to? */
55 unsigned int result; /* reply result */
56 unsigned int error; /* error code to pass back to sender */
57 struct message *callback_msg; /* message to queue for callback */
58 void *data; /* message reply data */
59 unsigned int data_size; /* size of message reply data */
60 struct timeout_user *timeout; /* result timeout */
65 struct list entry; /* entry in message list */
66 enum message_type type; /* message type */
67 user_handle_t win; /* window handle */
68 unsigned int msg; /* message code */
69 unsigned int wparam; /* parameters */
70 unsigned int lparam; /* parameters */
71 int x; /* x position */
72 int y; /* y position */
73 unsigned int time; /* message time */
74 unsigned int info; /* extra info */
75 user_handle_t hook; /* winevent hook handle */
76 void *hook_proc; /* winevent hook proc address */
77 void *data; /* message data for sent messages */
78 unsigned int data_size; /* size of message data */
79 unsigned int unique_id; /* unique id for nested hw message waits */
80 struct message_result *result; /* result in sender queue */
85 struct list entry; /* entry in timer list */
86 struct timeval when; /* next expiration */
87 unsigned int rate; /* timer rate in ms */
88 user_handle_t win; /* window handle */
89 unsigned int msg; /* message to post */
90 unsigned int id; /* timer id */
91 unsigned int lparam; /* lparam for message */
96 struct object obj; /* object header */
97 user_handle_t focus; /* focus window */
98 user_handle_t capture; /* capture window */
99 user_handle_t active; /* active window */
100 user_handle_t menu_owner; /* current menu owner window */
101 user_handle_t move_size; /* current moving/resizing window */
102 user_handle_t caret; /* caret window */
103 rectangle_t caret_rect; /* caret rectangle */
104 int caret_hide; /* caret hide count */
105 int caret_state; /* caret on/off state */
106 struct list msg_list; /* list of hardware messages */
107 unsigned char keystate[256]; /* state of each key */
112 struct object obj; /* object header */
113 unsigned int wake_bits; /* wakeup bits */
114 unsigned int wake_mask; /* wakeup mask */
115 unsigned int changed_bits; /* changed wakeup bits */
116 unsigned int changed_mask; /* changed wakeup mask */
117 int paint_count; /* pending paint messages count */
118 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
119 struct list send_result; /* stack of sent messages waiting for result */
120 struct list callback_result; /* list of callback messages waiting for result */
121 struct message_result *recv_result; /* stack of received messages waiting for result */
122 struct list pending_timers; /* list of pending timers */
123 struct list expired_timers; /* list of expired timers */
124 unsigned int next_timer_id; /* id for the next timer with a 0 window */
125 struct timeout_user *timeout; /* timeout for next timer to expire */
126 struct thread_input *input; /* thread input descriptor */
127 struct hook_table *hooks; /* hook table */
128 struct timeval last_get_msg; /* time of last get message call */
131 static void msg_queue_dump( struct object *obj, int verbose );
132 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
133 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
134 static int msg_queue_signaled( struct object *obj, struct thread *thread );
135 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
136 static void msg_queue_destroy( struct object *obj );
137 static void thread_input_dump( struct object *obj, int verbose );
138 static void thread_input_destroy( struct object *obj );
139 static void timer_callback( void *private );
141 static const struct object_ops msg_queue_ops =
143 sizeof(struct msg_queue), /* size */
144 msg_queue_dump, /* dump */
145 msg_queue_add_queue, /* add_queue */
146 msg_queue_remove_queue, /* remove_queue */
147 msg_queue_signaled, /* signaled */
148 msg_queue_satisfied, /* satisfied */
149 no_signal, /* signal */
150 no_get_fd, /* get_fd */
151 msg_queue_destroy /* destroy */
155 static const struct object_ops thread_input_ops =
157 sizeof(struct thread_input), /* size */
158 thread_input_dump, /* dump */
159 no_add_queue, /* add_queue */
160 NULL, /* remove_queue */
162 NULL, /* satisfied */
163 no_signal, /* signal */
164 no_get_fd, /* get_fd */
165 thread_input_destroy /* destroy */
168 /* pointer to input structure of foreground thread */
169 static struct thread_input *foreground_input;
170 static unsigned int last_input_time;
173 /* set the caret window in a given thread input */
174 static void set_caret_window( struct thread_input *input, user_handle_t win )
176 if (!win || win != input->caret)
178 input->caret_rect.left = 0;
179 input->caret_rect.top = 0;
180 input->caret_rect.right = 0;
181 input->caret_rect.bottom = 0;
184 input->caret_hide = 1;
185 input->caret_state = 0;
188 /* create a thread input object */
189 static struct thread_input *create_thread_input(void)
191 struct thread_input *input;
193 if ((input = alloc_object( &thread_input_ops )))
198 input->menu_owner = 0;
199 input->move_size = 0;
200 list_init( &input->msg_list );
201 set_caret_window( input, 0 );
202 memset( input->keystate, 0, sizeof(input->keystate) );
207 /* release the thread input data of a given thread */
208 static inline void release_thread_input( struct thread *thread )
210 struct thread_input *input = thread->queue->input;
213 release_object( input );
214 thread->queue->input = NULL;
217 /* create a message queue object */
218 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
220 struct msg_queue *queue;
223 if (!input && !(input = create_thread_input())) return NULL;
224 if ((queue = alloc_object( &msg_queue_ops )))
226 queue->wake_bits = 0;
227 queue->wake_mask = 0;
228 queue->changed_bits = 0;
229 queue->changed_mask = 0;
230 queue->paint_count = 0;
231 queue->recv_result = NULL;
232 queue->next_timer_id = 1;
233 queue->timeout = NULL;
234 queue->input = (struct thread_input *)grab_object( input );
236 gettimeofday( &queue->last_get_msg, NULL );
237 list_init( &queue->send_result );
238 list_init( &queue->callback_result );
239 list_init( &queue->pending_timers );
240 list_init( &queue->expired_timers );
241 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
243 thread->queue = queue;
244 if (!thread->process->queue)
245 thread->process->queue = (struct msg_queue *)grab_object( queue );
247 release_object( input );
251 /* free the message queue of a thread at thread exit */
252 void free_msg_queue( struct thread *thread )
254 struct process *process = thread->process;
255 struct thread_input *input;
257 remove_thread_hooks( thread );
258 if (!thread->queue) return;
259 if (process->queue == thread->queue) /* is it the process main queue? */
261 release_object( process->queue );
262 process->queue = NULL;
263 if (process->idle_event)
265 set_event( process->idle_event );
266 release_object( process->idle_event );
267 process->idle_event = NULL;
270 input = thread->queue->input;
271 release_object( thread->queue );
272 thread->queue = NULL;
275 /* get the hook table for a given thread */
276 struct hook_table *get_queue_hooks( struct thread *thread )
278 if (!thread->queue) return NULL;
279 return thread->queue->hooks;
282 /* set the hook table for a given thread, allocating the queue if needed */
283 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
285 struct msg_queue *queue = thread->queue;
286 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
287 if (queue->hooks) release_object( queue->hooks );
288 queue->hooks = hooks;
291 /* check the queue status */
292 inline static int is_signaled( struct msg_queue *queue )
294 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
297 /* set some queue bits */
298 inline static void set_queue_bits( struct msg_queue *queue, unsigned int bits )
300 queue->wake_bits |= bits;
301 queue->changed_bits |= bits;
302 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
305 /* clear some queue bits */
306 inline static void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
308 queue->wake_bits &= ~bits;
309 queue->changed_bits &= ~bits;
312 /* check whether msg is a keyboard message */
313 inline static int is_keyboard_msg( struct message *msg )
315 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
318 /* check if message is matched by the filter */
319 inline static int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
321 return (msg >= first && msg <= last);
324 /* check whether a message filter contains at least one potential hardware message */
325 inline static int filter_contains_hw_range( unsigned int first, unsigned int last )
327 /* hardware message ranges are (in numerical order):
328 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
329 * WM_KEYFIRST .. WM_KEYLAST
330 * WM_MOUSEFIRST .. WM_MOUSELAST
332 if (last < WM_NCMOUSEFIRST) return 0;
333 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
334 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
335 if (first > WM_MOUSELAST) return 0;
339 /* get the QS_* bit corresponding to a given hardware message */
340 inline static int get_hardware_msg_bit( struct message *msg )
342 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
343 if (is_keyboard_msg( msg )) return QS_KEY;
344 return QS_MOUSEBUTTON;
347 /* get the current thread queue, creating it if needed */
348 inline static struct msg_queue *get_current_queue(void)
350 struct msg_queue *queue = current->queue;
351 if (!queue) queue = create_msg_queue( current, NULL );
355 /* get a (pseudo-)unique id to tag hardware messages */
356 inline static unsigned int get_unique_id(void)
358 static unsigned int id;
359 if (!++id) id = 1; /* avoid an id of 0 */
363 /* try to merge a message with the last in the list; return 1 if successful */
364 static int merge_message( struct thread_input *input, const struct message *msg )
366 struct message *prev;
367 struct list *ptr = list_tail( &input->msg_list );
370 prev = LIST_ENTRY( ptr, struct message, entry );
371 if (prev->unique_id) return 0;
372 if (prev->result) return 0;
373 if (prev->win != msg->win) return 0;
374 if (prev->msg != msg->msg) return 0;
375 if (prev->type != msg->type) return 0;
376 /* now we can merge it */
377 prev->wparam = msg->wparam;
378 prev->lparam = msg->lparam;
381 prev->time = msg->time;
382 prev->info = msg->info;
386 /* free a result structure */
387 static void free_result( struct message_result *result )
389 if (result->timeout) remove_timeout_user( result->timeout );
390 if (result->data) free( result->data );
391 if (result->callback_msg) free( result->callback_msg );
395 /* remove the result from the sender list it is on */
396 static inline void remove_result_from_sender( struct message_result *result )
398 assert( result->sender );
400 list_remove( &result->sender_entry );
401 result->sender = NULL;
402 if (!result->receiver) free_result( result );
405 /* store the message result in the appropriate structure */
406 static void store_message_result( struct message_result *res, unsigned int result,
409 res->result = result;
414 remove_timeout_user( res->timeout );
419 if (res->callback_msg)
421 /* queue the callback message in the sender queue */
422 res->callback_msg->lparam = result;
423 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
424 set_queue_bits( res->sender, QS_SENDMESSAGE );
425 res->callback_msg = NULL;
426 remove_result_from_sender( res );
430 /* wake sender queue if waiting on this result */
431 if (list_head(&res->sender->send_result) == &res->sender_entry)
432 set_queue_bits( res->sender, QS_SMRESULT );
438 /* free a message when deleting a queue or window */
439 static void free_message( struct message *msg )
441 struct message_result *result = msg->result;
446 result->receiver = NULL;
447 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
449 else free_result( result );
451 if (msg->data) free( msg->data );
455 /* remove (and free) a message from a message list */
456 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
457 enum message_kind kind )
459 list_remove( &msg->entry );
463 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
466 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_POSTMESSAGE );
472 /* message timed out without getting a reply */
473 static void result_timeout( void *private )
475 struct message_result *result = private;
477 assert( !result->replied );
479 result->timeout = NULL;
480 store_message_result( result, 0, STATUS_TIMEOUT );
483 /* allocate and fill a message result structure */
484 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
485 struct msg_queue *recv_queue,
486 struct message *msg, unsigned int timeout,
487 void *callback, unsigned int callback_data )
489 struct message_result *result = mem_alloc( sizeof(*result) );
492 result->sender = send_queue;
493 result->receiver = recv_queue;
496 result->data_size = 0;
497 result->timeout = NULL;
499 if (msg->type == MSG_CALLBACK)
501 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
507 callback_msg->type = MSG_CALLBACK_RESULT;
508 callback_msg->win = msg->win;
509 callback_msg->msg = msg->msg;
510 callback_msg->wparam = (unsigned int)callback;
511 callback_msg->lparam = 0;
512 callback_msg->time = get_tick_count();
515 callback_msg->info = callback_data;
516 callback_msg->hook = 0;
517 callback_msg->hook_proc = NULL;
518 callback_msg->result = NULL;
519 callback_msg->data = NULL;
520 callback_msg->data_size = 0;
522 result->callback_msg = callback_msg;
523 list_add_head( &send_queue->callback_result, &result->sender_entry );
527 result->callback_msg = NULL;
528 list_add_head( &send_queue->send_result, &result->sender_entry );
534 gettimeofday( &when, 0 );
535 add_timeout( &when, timeout );
536 result->timeout = add_timeout_user( &when, result_timeout, result );
542 /* receive a message, removing it from the sent queue */
543 static void receive_message( struct msg_queue *queue, struct message *msg,
544 struct get_message_reply *reply )
546 struct message_result *result = msg->result;
548 reply->total = msg->data_size;
549 if (msg->data_size > get_reply_max_size())
551 set_error( STATUS_BUFFER_OVERFLOW );
554 reply->type = msg->type;
555 reply->win = msg->win;
556 reply->msg = msg->msg;
557 reply->wparam = msg->wparam;
558 reply->lparam = msg->lparam;
561 reply->time = msg->time;
562 reply->info = msg->info;
563 reply->hook = msg->hook;
564 reply->hook_proc = msg->hook_proc;
566 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
568 list_remove( &msg->entry );
569 /* put the result on the receiver result stack */
572 result->recv_next = queue->recv_result;
573 queue->recv_result = result;
576 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
579 /* set the result of the current received message */
580 static void reply_message( struct msg_queue *queue, unsigned int result,
581 unsigned int error, int remove, const void *data, size_t len )
583 struct message_result *res = queue->recv_result;
587 queue->recv_result = res->recv_next;
588 res->receiver = NULL;
589 if (!res->sender) /* no one waiting for it */
597 if (len && (res->data = memdup( data, len ))) res->data_size = len;
598 store_message_result( res, result, error );
602 /* retrieve a posted message */
603 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
604 unsigned int first, unsigned int last, unsigned int flags,
605 struct get_message_reply *reply )
609 /* check against the filters */
610 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
612 if (msg->msg == WM_QUIT) goto found; /* WM_QUIT is never filtered */
613 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
614 if (!check_msg_filter( msg->msg, first, last )) continue;
615 goto found; /* found one */
619 /* return it to the app */
621 reply->total = msg->data_size;
622 if (msg->data_size > get_reply_max_size())
624 set_error( STATUS_BUFFER_OVERFLOW );
627 reply->type = msg->type;
628 reply->win = msg->win;
629 reply->msg = msg->msg;
630 reply->wparam = msg->wparam;
631 reply->lparam = msg->lparam;
634 reply->time = msg->time;
635 reply->info = msg->info;
637 if (flags & GET_MSG_REMOVE)
641 set_reply_data_ptr( msg->data, msg->data_size );
645 remove_queue_message( queue, msg, POST_MESSAGE );
647 else if (msg->data) set_reply_data( msg->data, msg->data_size );
652 /* empty a message list and free all the messages */
653 static void empty_msg_list( struct list *list )
657 while ((ptr = list_head( list )) != NULL)
659 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
660 list_remove( &msg->entry );
665 /* cleanup all pending results when deleting a queue */
666 static void cleanup_results( struct msg_queue *queue )
670 while ((entry = list_head( &queue->send_result )) != NULL)
672 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
675 while ((entry = list_head( &queue->callback_result )) != NULL)
677 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
680 while (queue->recv_result)
681 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
684 /* check if the thread owning the queue is hung (not checking for messages) */
685 static int is_queue_hung( struct msg_queue *queue )
688 struct wait_queue_entry *entry;
690 gettimeofday( &now, NULL );
691 if (now.tv_sec - queue->last_get_msg.tv_sec <= 5)
692 return 0; /* less than 5 seconds since last get message -> not hung */
694 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
696 if (entry->thread->queue == queue)
697 return 0; /* thread is waiting on queue -> not hung */
702 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
704 struct msg_queue *queue = (struct msg_queue *)obj;
705 struct process *process = entry->thread->process;
707 /* a thread can only wait on its own queue */
708 if (entry->thread->queue != queue)
710 set_error( STATUS_ACCESS_DENIED );
713 /* if waiting on the main process queue, set the idle event */
714 if (process->queue == queue)
716 if (process->idle_event) set_event( process->idle_event );
718 add_queue( obj, entry );
722 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
724 struct msg_queue *queue = (struct msg_queue *)obj;
725 struct process *process = entry->thread->process;
727 remove_queue( obj, entry );
729 assert( entry->thread->queue == queue );
731 /* if waiting on the main process queue, reset the idle event */
732 if (process->queue == queue)
734 if (process->idle_event) reset_event( process->idle_event );
738 static void msg_queue_dump( struct object *obj, int verbose )
740 struct msg_queue *queue = (struct msg_queue *)obj;
741 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
742 queue->wake_bits, queue->wake_mask );
745 static int msg_queue_signaled( struct object *obj, struct thread *thread )
747 struct msg_queue *queue = (struct msg_queue *)obj;
748 return is_signaled( queue );
751 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
753 struct msg_queue *queue = (struct msg_queue *)obj;
754 queue->wake_mask = 0;
755 queue->changed_mask = 0;
756 return 0; /* Not abandoned */
759 static void msg_queue_destroy( struct object *obj )
761 struct msg_queue *queue = (struct msg_queue *)obj;
765 cleanup_results( queue );
766 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
768 while ((ptr = list_head( &queue->pending_timers )))
770 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
771 list_remove( &timer->entry );
774 while ((ptr = list_head( &queue->expired_timers )))
776 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
777 list_remove( &timer->entry );
780 if (queue->timeout) remove_timeout_user( queue->timeout );
781 if (queue->input) release_object( queue->input );
782 if (queue->hooks) release_object( queue->hooks );
785 static void thread_input_dump( struct object *obj, int verbose )
787 struct thread_input *input = (struct thread_input *)obj;
788 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
789 input->focus, input->capture, input->active );
792 static void thread_input_destroy( struct object *obj )
794 struct thread_input *input = (struct thread_input *)obj;
796 if (foreground_input == input) foreground_input = NULL;
797 empty_msg_list( &input->msg_list );
800 /* fix the thread input data when a window is destroyed */
801 inline static void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
803 struct thread_input *input = queue->input;
805 if (window == input->focus) input->focus = 0;
806 if (window == input->capture) input->capture = 0;
807 if (window == input->active) input->active = 0;
808 if (window == input->menu_owner) input->menu_owner = 0;
809 if (window == input->move_size) input->move_size = 0;
810 if (window == input->caret) set_caret_window( input, 0 );
813 /* check if the specified window can be set in the input data of a given queue */
814 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
816 struct thread *thread;
819 if (!window) return 1; /* we can always clear the data */
821 if ((thread = get_window_thread( window )))
823 ret = (queue->input == thread->queue->input);
824 if (!ret) set_error( STATUS_ACCESS_DENIED );
825 release_object( thread );
827 else set_error( STATUS_INVALID_HANDLE );
832 /* make sure the specified thread has a queue */
833 int init_thread_queue( struct thread *thread )
835 if (thread->queue) return 1;
836 return (create_msg_queue( thread, NULL ) != NULL);
839 /* attach two thread input data structures */
840 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
842 struct thread_input *input;
844 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
845 input = (struct thread_input *)grab_object( thread_to->queue->input );
847 if (thread_from->queue)
849 release_thread_input( thread_from );
850 thread_from->queue->input = input;
854 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
856 memset( input->keystate, 0, sizeof(input->keystate) );
860 /* detach two thread input data structures */
861 static void detach_thread_input( struct thread *thread_from, struct thread *thread_to )
863 struct thread_input *input;
865 if (!thread_from->queue || !thread_to->queue ||
866 thread_from->queue->input != thread_to->queue->input)
868 set_error( STATUS_ACCESS_DENIED );
871 if ((input = create_thread_input()))
873 release_thread_input( thread_from );
874 thread_from->queue->input = input;
879 /* set the next timer to expire */
880 static void set_next_timer( struct msg_queue *queue )
886 remove_timeout_user( queue->timeout );
887 queue->timeout = NULL;
889 if ((ptr = list_head( &queue->pending_timers )))
891 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
892 queue->timeout = add_timeout_user( &timer->when, timer_callback, queue );
894 /* set/clear QS_TIMER bit */
895 if (list_empty( &queue->expired_timers ))
896 clear_queue_bits( queue, QS_TIMER );
898 set_queue_bits( queue, QS_TIMER );
901 /* find a timer from its window and id */
902 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
903 unsigned int msg, unsigned int id )
907 /* we need to search both lists */
909 LIST_FOR_EACH( ptr, &queue->pending_timers )
911 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
912 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
914 LIST_FOR_EACH( ptr, &queue->expired_timers )
916 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
917 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
922 /* callback for the next timer expiration */
923 static void timer_callback( void *private )
925 struct msg_queue *queue = private;
928 queue->timeout = NULL;
929 /* move on to the next timer */
930 ptr = list_head( &queue->pending_timers );
932 list_add_tail( &queue->expired_timers, ptr );
933 set_next_timer( queue );
936 /* link a timer at its rightful place in the queue list */
937 static void link_timer( struct msg_queue *queue, struct timer *timer )
941 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
943 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
944 if (!time_before( &t->when, &timer->when )) break;
946 list_add_before( ptr, &timer->entry );
949 /* remove a timer from the queue timer list and free it */
950 static void free_timer( struct msg_queue *queue, struct timer *timer )
952 list_remove( &timer->entry );
954 set_next_timer( queue );
957 /* restart an expired timer */
958 static void restart_timer( struct msg_queue *queue, struct timer *timer )
962 list_remove( &timer->entry );
963 gettimeofday( &now, 0 );
964 while (!time_before( &now, &timer->when )) add_timeout( &timer->when, timer->rate );
965 link_timer( queue, timer );
966 set_next_timer( queue );
969 /* find an expired timer matching the filtering parameters */
970 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
971 unsigned int get_first, unsigned int get_last,
976 LIST_FOR_EACH( ptr, &queue->expired_timers )
978 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
979 if (win && timer->win != win) continue;
980 if (check_msg_filter( timer->msg, get_first, get_last ))
982 if (remove) restart_timer( queue, timer );
990 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
992 struct timer *timer = mem_alloc( sizeof(*timer) );
995 timer->rate = max( rate, 1 );
996 gettimeofday( &timer->when, 0 );
997 add_timeout( &timer->when, rate );
998 link_timer( queue, timer );
999 /* check if we replaced the next timer */
1000 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1005 /* change the input key state for a given key */
1006 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1010 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1011 input->keystate[key] |= 0x80;
1013 else input->keystate[key] &= ~0x80;
1016 /* update the input key state for a keyboard message */
1017 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1020 int down = 0, extended;
1024 case WM_LBUTTONDOWN:
1028 set_input_key_state( input, VK_LBUTTON, down );
1030 case WM_MBUTTONDOWN:
1034 set_input_key_state( input, VK_MBUTTON, down );
1036 case WM_RBUTTONDOWN:
1040 set_input_key_state( input, VK_RBUTTON, down );
1042 case WM_XBUTTONDOWN:
1046 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1047 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1055 key = (unsigned char)msg->wparam;
1056 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1057 set_input_key_state( input, key, down );
1061 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1064 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1067 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1074 /* release the hardware message currently being processed by the given thread */
1075 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1076 int remove, user_handle_t new_win )
1078 struct thread_input *input = queue->input;
1079 struct message *msg;
1081 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1083 if (msg->unique_id == hw_id) break;
1085 if (&msg->entry == &input->msg_list) return; /* not found */
1087 /* clear the queue bit for that message */
1088 if (remove || new_win)
1090 struct message *other;
1093 clr_bit = get_hardware_msg_bit( msg );
1094 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1096 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1102 if (clr_bit) clear_queue_bits( queue, clr_bit );
1105 if (new_win) /* set the new window */
1107 struct thread *owner = get_window_thread( new_win );
1110 if (owner->queue->input == input)
1113 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1116 release_object( owner );
1121 update_input_key_state( input, msg );
1122 list_remove( &msg->entry );
1123 free_message( msg );
1127 /* find the window that should receive a given hardware message */
1128 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1129 unsigned int *msg_code )
1131 user_handle_t win = 0;
1133 *msg_code = msg->msg;
1134 if (is_keyboard_msg( msg ))
1136 if (input && !(win = input->focus))
1138 win = input->active;
1139 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1142 else /* mouse message */
1144 if (!input || !(win = input->capture))
1146 if (!(win = msg->win) || !is_window_visible( win ))
1147 win = window_from_point( msg->x, msg->y );
1153 /* queue a hardware message into a given thread input */
1154 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1157 struct thread *thread;
1158 struct thread_input *input;
1159 unsigned int msg_code;
1161 last_input_time = get_tick_count();
1163 win = find_hardware_message_window( queue ? queue->input : foreground_input, msg, &msg_code );
1164 if (!win || !(thread = get_window_thread(win)))
1169 input = thread->queue->input;
1171 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1174 msg->unique_id = 0; /* will be set once we return it to the app */
1175 list_add_tail( &input->msg_list, &msg->entry );
1176 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1178 release_object( thread );
1181 /* check message filter for a hardware message */
1182 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1183 user_handle_t filter_win, unsigned int first, unsigned int last )
1185 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1187 /* we can only test the window for a keyboard message since the
1188 * dest window for a mouse message depends on hittest */
1189 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1191 /* the message code is final for a keyboard message, we can simply check it */
1192 return check_msg_filter( msg_code, first, last );
1194 else /* mouse message */
1196 /* we need to check all possible values that the message can have in the end */
1198 if (check_msg_filter( msg_code, first, last )) return 1;
1199 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1201 /* all other messages can become non-client messages */
1202 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1204 /* clicks can become double-clicks or non-client double-clicks */
1205 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1206 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1208 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1209 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1216 /* find a hardware message for the given queue */
1217 static int get_hardware_message( struct thread *thread, int hw_id, user_handle_t filter_win,
1218 unsigned int first, unsigned int last, struct get_message_reply *reply )
1220 struct thread_input *input = thread->queue->input;
1221 struct thread *win_thread;
1224 int clear_bits, got_one = 0;
1225 unsigned int msg_code;
1227 ptr = list_head( &input->msg_list );
1232 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1233 if (msg->unique_id == hw_id) break;
1234 ptr = list_next( &input->msg_list, ptr );
1236 if (!ptr) ptr = list_head( &input->msg_list );
1237 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1240 if (ptr == list_head( &input->msg_list ))
1241 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1243 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1247 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1248 ptr = list_next( &input->msg_list, ptr );
1249 win = find_hardware_message_window( input, msg, &msg_code );
1250 if (!win || !(win_thread = get_window_thread( win )))
1252 /* no window at all, remove it */
1253 update_input_key_state( input, msg );
1254 list_remove( &msg->entry );
1255 free_message( msg );
1258 if (win_thread != thread)
1260 if (win_thread->queue->input == input)
1262 /* wake the other thread */
1263 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1268 /* for another thread input, drop it */
1269 update_input_key_state( input, msg );
1270 list_remove( &msg->entry );
1271 free_message( msg );
1273 release_object( win_thread );
1276 release_object( win_thread );
1278 /* if we already got a message for another thread, or if it doesn't
1279 * match the filter we skip it */
1280 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1282 clear_bits &= ~get_hardware_msg_bit( msg );
1285 /* now we can return it */
1286 if (!msg->unique_id) msg->unique_id = get_unique_id();
1287 reply->type = MSG_HARDWARE;
1289 reply->msg = msg_code;
1290 reply->wparam = msg->wparam;
1291 reply->lparam = msg->lparam;
1294 reply->time = msg->time;
1295 reply->info = msg->info;
1296 reply->hw_id = msg->unique_id;
1299 /* nothing found, clear the hardware queue bits */
1300 clear_queue_bits( thread->queue, clear_bits );
1304 /* increment (or decrement if 'incr' is negative) the queue paint count */
1305 void inc_queue_paint_count( struct thread *thread, int incr )
1307 struct msg_queue *queue = thread->queue;
1311 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1313 if (queue->paint_count)
1314 set_queue_bits( queue, QS_PAINT );
1316 clear_queue_bits( queue, QS_PAINT );
1320 /* remove all messages and timers belonging to a certain window */
1321 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1323 struct msg_queue *queue = thread->queue;
1331 ptr = list_head( &queue->pending_timers );
1334 struct list *next = list_next( &queue->pending_timers, ptr );
1335 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1336 if (timer->win == win) free_timer( queue, timer );
1339 ptr = list_head( &queue->expired_timers );
1342 struct list *next = list_next( &queue->expired_timers, ptr );
1343 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1344 if (timer->win == win) free_timer( queue, timer );
1348 /* remove messages */
1349 for (i = 0; i < NB_MSG_KINDS; i++)
1351 struct list *ptr, *next;
1353 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1355 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1356 if (msg->win == win) remove_queue_message( queue, msg, i );
1360 thread_input_cleanup_window( queue, win );
1363 /* post a message to a window; used by socket handling */
1364 void post_message( user_handle_t win, unsigned int message,
1365 unsigned int wparam, unsigned int lparam )
1367 struct message *msg;
1368 struct thread *thread = get_window_thread( win );
1370 if (!thread) return;
1372 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1374 msg->type = MSG_POSTED;
1375 msg->win = get_user_full_handle( win );
1377 msg->wparam = wparam;
1378 msg->lparam = lparam;
1379 msg->time = get_tick_count();
1384 msg->hook_proc = NULL;
1389 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1390 set_queue_bits( thread->queue, QS_POSTMESSAGE );
1392 release_object( thread );
1395 /* post a win event */
1396 void post_win_event( struct thread *thread, unsigned int event,
1397 user_handle_t win, unsigned int object_id,
1398 unsigned int child_id, void *hook_proc,
1399 const WCHAR *module, size_t module_size,
1402 struct message *msg;
1404 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1406 msg->type = MSG_WINEVENT;
1407 msg->win = get_user_full_handle( win );
1409 msg->wparam = object_id;
1410 msg->lparam = child_id;
1411 msg->time = get_tick_count();
1414 msg->info = get_thread_id( current );
1417 msg->hook_proc = hook_proc;
1419 if ((msg->data = malloc( module_size )))
1421 msg->data_size = module_size;
1422 memcpy( msg->data, module, module_size );
1424 if (debug_level > 1)
1425 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1426 get_thread_id(thread), event, win, object_id, child_id );
1427 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1428 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1435 /* get the message queue of the current thread */
1436 DECL_HANDLER(get_msg_queue)
1438 struct msg_queue *queue = get_current_queue();
1441 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1445 /* set the current message queue wakeup mask */
1446 DECL_HANDLER(set_queue_mask)
1448 struct msg_queue *queue = get_current_queue();
1452 queue->wake_mask = req->wake_mask;
1453 queue->changed_mask = req->changed_mask;
1454 reply->wake_bits = queue->wake_bits;
1455 reply->changed_bits = queue->changed_bits;
1456 if (is_signaled( queue ))
1458 /* if skip wait is set, do what would have been done in the subsequent wait */
1459 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1460 else wake_up( &queue->obj, 0 );
1466 /* get the current message queue status */
1467 DECL_HANDLER(get_queue_status)
1469 struct msg_queue *queue = current->queue;
1472 reply->wake_bits = queue->wake_bits;
1473 reply->changed_bits = queue->changed_bits;
1474 if (req->clear) queue->changed_bits = 0;
1476 else reply->wake_bits = reply->changed_bits = 0;
1480 /* send a message to a thread queue */
1481 DECL_HANDLER(send_message)
1483 struct message *msg;
1484 struct msg_queue *send_queue = get_current_queue();
1485 struct msg_queue *recv_queue = NULL;
1486 struct thread *thread = NULL;
1490 if (!(thread = get_thread_from_id( req->id ))) return;
1492 else if (req->type != MSG_HARDWARE)
1494 /* only hardware messages are allowed without destination thread */
1495 set_error( STATUS_INVALID_PARAMETER );
1499 if (thread && !(recv_queue = thread->queue))
1501 set_error( STATUS_INVALID_PARAMETER );
1502 release_object( thread );
1505 if (recv_queue && (req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1507 set_error( STATUS_TIMEOUT );
1508 release_object( thread );
1512 if ((msg = mem_alloc( sizeof(*msg) )))
1514 msg->type = req->type;
1515 msg->win = get_user_full_handle( req->win );
1516 msg->msg = req->msg;
1517 msg->wparam = req->wparam;
1518 msg->lparam = req->lparam;
1519 msg->time = req->time;
1522 msg->info = req->info;
1524 msg->hook_proc = NULL;
1531 case MSG_OTHER_PROCESS:
1532 msg->data_size = get_req_data_size();
1533 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1542 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg,
1543 req->timeout, req->callback, req->info )))
1545 free_message( msg );
1550 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1551 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1554 /* needed for posted DDE messages */
1555 msg->data_size = get_req_data_size();
1556 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1561 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1562 set_queue_bits( recv_queue, QS_POSTMESSAGE );
1565 queue_hardware_message( recv_queue, msg );
1567 case MSG_CALLBACK_RESULT: /* cannot send this one */
1569 set_error( STATUS_INVALID_PARAMETER );
1574 if (thread) release_object( thread );
1578 /* get a message from the current queue */
1579 DECL_HANDLER(get_message)
1581 struct timer *timer;
1583 struct msg_queue *queue = get_current_queue();
1584 user_handle_t get_win = get_user_full_handle( req->get_win );
1586 reply->active_hooks = get_active_hooks();
1589 gettimeofday( &queue->last_get_msg, NULL );
1591 /* first check for sent messages */
1592 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1594 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1595 receive_message( queue, msg, reply );
1598 if (req->flags & GET_MSG_SENT_ONLY) goto done; /* nothing else to check */
1600 /* clear changed bits so we can wait on them if we don't find a message */
1601 queue->changed_bits = 0;
1603 /* then check for posted messages */
1604 if (get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1607 /* then check for any raw hardware message */
1608 if (filter_contains_hw_range( req->get_first, req->get_last ) &&
1609 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1612 /* now check for WM_PAINT */
1613 if (queue->paint_count &&
1614 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1615 (reply->win = find_window_to_repaint( get_win, current )))
1617 reply->type = MSG_POSTED;
1618 reply->msg = WM_PAINT;
1623 reply->time = get_tick_count();
1628 /* now check for timer */
1629 if ((timer = find_expired_timer( queue, get_win, req->get_first,
1630 req->get_last, (req->flags & GET_MSG_REMOVE) )))
1632 reply->type = MSG_POSTED;
1633 reply->win = timer->win;
1634 reply->msg = timer->msg;
1635 reply->wparam = timer->id;
1636 reply->lparam = timer->lparam;
1639 reply->time = get_tick_count();
1645 set_error( STATUS_PENDING ); /* FIXME */
1649 /* reply to a sent message */
1650 DECL_HANDLER(reply_message)
1652 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1653 else if (current->queue->recv_result)
1654 reply_message( current->queue, req->result, 0, req->remove,
1655 get_req_data(), get_req_data_size() );
1659 /* accept the current hardware message */
1660 DECL_HANDLER(accept_hardware_message)
1663 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1665 set_error( STATUS_ACCESS_DENIED );
1669 /* retrieve the reply for the last message sent */
1670 DECL_HANDLER(get_message_reply)
1672 struct message_result *result;
1674 struct msg_queue *queue = current->queue;
1678 set_error( STATUS_PENDING );
1681 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1683 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1684 if (result->replied || req->cancel)
1686 if (result->replied)
1688 reply->result = result->result;
1689 set_error( result->error );
1692 size_t data_len = min( result->data_size, get_reply_max_size() );
1693 set_reply_data_ptr( result->data, data_len );
1694 result->data = NULL;
1695 result->data_size = 0;
1698 remove_result_from_sender( result );
1700 entry = list_head( &queue->send_result );
1701 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1704 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1705 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1709 else set_error( STATUS_ACCESS_DENIED );
1713 /* set a window timer */
1714 DECL_HANDLER(set_win_timer)
1716 struct timer *timer;
1717 struct msg_queue *queue;
1718 struct thread *thread = NULL;
1719 user_handle_t win = 0;
1720 unsigned int id = req->id;
1724 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1726 set_error( STATUS_INVALID_HANDLE );
1729 if (thread->process != current->process)
1731 release_object( thread );
1732 set_error( STATUS_ACCESS_DENIED );
1735 queue = thread->queue;
1736 /* remove it if it existed already */
1737 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1741 queue = get_current_queue();
1742 /* find a free id for it */
1745 id = queue->next_timer_id;
1746 if (++queue->next_timer_id >= 0x10000) queue->next_timer_id = 1;
1748 while (find_timer( queue, 0, req->msg, id ));
1751 if ((timer = set_timer( queue, req->rate )))
1754 timer->msg = req->msg;
1756 timer->lparam = req->lparam;
1759 if (thread) release_object( thread );
1762 /* kill a window timer */
1763 DECL_HANDLER(kill_win_timer)
1765 struct timer *timer;
1766 struct thread *thread;
1767 user_handle_t win = 0;
1771 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1773 set_error( STATUS_INVALID_HANDLE );
1776 if (thread->process != current->process)
1778 release_object( thread );
1779 set_error( STATUS_ACCESS_DENIED );
1783 else thread = (struct thread *)grab_object( current );
1785 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1786 free_timer( thread->queue, timer );
1788 set_error( STATUS_INVALID_PARAMETER );
1790 release_object( thread );
1794 /* attach (or detach) thread inputs */
1795 DECL_HANDLER(attach_thread_input)
1797 struct thread *thread_from = get_thread_from_id( req->tid_from );
1798 struct thread *thread_to = get_thread_from_id( req->tid_to );
1800 if (!thread_from || !thread_to)
1802 if (thread_from) release_object( thread_from );
1803 if (thread_to) release_object( thread_to );
1806 if (thread_from != thread_to)
1808 if (req->attach) attach_thread_input( thread_from, thread_to );
1809 else detach_thread_input( thread_from, thread_to );
1811 else set_error( STATUS_ACCESS_DENIED );
1812 release_object( thread_from );
1813 release_object( thread_to );
1817 /* get thread input data */
1818 DECL_HANDLER(get_thread_input)
1820 struct thread *thread = NULL;
1821 struct thread_input *input;
1825 if (!(thread = get_thread_from_id( req->tid ))) return;
1826 input = thread->queue ? thread->queue->input : NULL;
1828 else input = foreground_input; /* get the foreground thread info */
1832 reply->focus = input->focus;
1833 reply->capture = input->capture;
1834 reply->active = input->active;
1835 reply->menu_owner = input->menu_owner;
1836 reply->move_size = input->move_size;
1837 reply->caret = input->caret;
1838 reply->rect = input->caret_rect;
1845 reply->menu_owner = 0;
1846 reply->move_size = 0;
1848 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
1850 /* foreground window is active window of foreground thread */
1851 reply->foreground = foreground_input ? foreground_input->active : 0;
1852 if (thread) release_object( thread );
1856 /* retrieve queue keyboard state for a given thread */
1857 DECL_HANDLER(get_key_state)
1859 struct thread *thread;
1860 struct thread_input *input;
1862 if (!(thread = get_thread_from_id( req->tid ))) return;
1863 input = thread->queue ? thread->queue->input : NULL;
1866 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
1867 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
1869 release_object( thread );
1873 /* set queue keyboard state for a given thread */
1874 DECL_HANDLER(set_key_state)
1876 struct thread *thread = NULL;
1877 struct thread_input *input;
1879 if (!(thread = get_thread_from_id( req->tid ))) return;
1880 input = thread->queue ? thread->queue->input : NULL;
1883 size_t size = min( sizeof(input->keystate), get_req_data_size() );
1884 if (size) memcpy( input->keystate, get_req_data(), size );
1886 release_object( thread );
1890 /* set the system foreground window */
1891 DECL_HANDLER(set_foreground_window)
1893 struct msg_queue *queue = get_current_queue();
1895 reply->previous = foreground_input ? foreground_input->active : 0;
1896 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
1897 reply->send_msg_new = FALSE;
1901 struct thread *thread;
1903 if (is_top_level_window( req->handle ) &&
1904 ((thread = get_window_thread( req->handle ))))
1906 foreground_input = thread->queue->input;
1907 reply->send_msg_new = (foreground_input != queue->input);
1908 release_object( thread );
1910 else set_error( STATUS_INVALID_HANDLE );
1912 else foreground_input = NULL;
1916 /* set the current thread focus window */
1917 DECL_HANDLER(set_focus_window)
1919 struct msg_queue *queue = get_current_queue();
1921 reply->previous = 0;
1922 if (queue && check_queue_input_window( queue, req->handle ))
1924 reply->previous = queue->input->focus;
1925 queue->input->focus = get_user_full_handle( req->handle );
1930 /* set the current thread active window */
1931 DECL_HANDLER(set_active_window)
1933 struct msg_queue *queue = get_current_queue();
1935 reply->previous = 0;
1936 if (queue && check_queue_input_window( queue, req->handle ))
1938 if (!req->handle || make_window_active( req->handle ))
1940 reply->previous = queue->input->active;
1941 queue->input->active = get_user_full_handle( req->handle );
1943 else set_error( STATUS_INVALID_HANDLE );
1948 /* set the current thread capture window */
1949 DECL_HANDLER(set_capture_window)
1951 struct msg_queue *queue = get_current_queue();
1953 reply->previous = reply->full_handle = 0;
1954 if (queue && check_queue_input_window( queue, req->handle ))
1956 struct thread_input *input = queue->input;
1958 reply->previous = input->capture;
1959 input->capture = get_user_full_handle( req->handle );
1960 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
1961 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
1962 reply->full_handle = input->capture;
1967 /* Set the current thread caret window */
1968 DECL_HANDLER(set_caret_window)
1970 struct msg_queue *queue = get_current_queue();
1972 reply->previous = 0;
1973 if (queue && check_queue_input_window( queue, req->handle ))
1975 struct thread_input *input = queue->input;
1977 reply->previous = input->caret;
1978 reply->old_rect = input->caret_rect;
1979 reply->old_hide = input->caret_hide;
1980 reply->old_state = input->caret_state;
1982 set_caret_window( input, get_user_full_handle(req->handle) );
1983 input->caret_rect.right = input->caret_rect.left + req->width;
1984 input->caret_rect.bottom = input->caret_rect.top + req->height;
1989 /* Set the current thread caret information */
1990 DECL_HANDLER(set_caret_info)
1992 struct msg_queue *queue = get_current_queue();
1993 struct thread_input *input;
1996 input = queue->input;
1997 reply->full_handle = input->caret;
1998 reply->old_rect = input->caret_rect;
1999 reply->old_hide = input->caret_hide;
2000 reply->old_state = input->caret_state;
2002 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2004 set_error( STATUS_ACCESS_DENIED );
2007 if (req->flags & SET_CARET_POS)
2009 input->caret_rect.right += req->x - input->caret_rect.left;
2010 input->caret_rect.bottom += req->y - input->caret_rect.top;
2011 input->caret_rect.left = req->x;
2012 input->caret_rect.top = req->y;
2014 if (req->flags & SET_CARET_HIDE)
2016 input->caret_hide += req->hide;
2017 if (input->caret_hide < 0) input->caret_hide = 0;
2019 if (req->flags & SET_CARET_STATE)
2021 if (req->state == -1) input->caret_state = !input->caret_state;
2022 else input->caret_state = !!req->state;
2027 /* get the time of the last input event */
2028 DECL_HANDLER(get_last_input_time)
2030 reply->time = last_input_time;