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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
30 #define WIN32_NO_STATUS
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
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 lparam_t 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 */
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 lparam_t wparam; /* parameters */
74 lparam_t lparam; /* parameters */
75 unsigned int time; /* message time */
76 void *data; /* message data for sent messages */
77 unsigned int data_size; /* size of message data */
78 unsigned int unique_id; /* unique id for nested hw message waits */
79 struct message_result *result; /* result in sender queue */
84 struct list entry; /* entry in timer list */
85 timeout_t when; /* next expiration */
86 unsigned int rate; /* timer rate in ms */
87 user_handle_t win; /* window handle */
88 unsigned int msg; /* message to post */
89 lparam_t id; /* timer id */
90 lparam_t lparam; /* lparam for message */
95 struct object obj; /* object header */
96 struct desktop *desktop; /* desktop that this thread input belongs to */
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 user_handle_t cursor; /* current cursor */
107 int cursor_count; /* cursor show count */
108 struct list msg_list; /* list of hardware messages */
109 unsigned char keystate[256]; /* state of each key */
114 struct object obj; /* object header */
115 struct fd *fd; /* optional file descriptor to poll */
116 unsigned int wake_bits; /* wakeup bits */
117 unsigned int wake_mask; /* wakeup mask */
118 unsigned int changed_bits; /* changed wakeup bits */
119 unsigned int changed_mask; /* changed wakeup mask */
120 int paint_count; /* pending paint messages count */
121 int quit_message; /* is there a pending quit message? */
122 int exit_code; /* exit code of pending quit message */
123 int cursor_count; /* per-queue cursor show count */
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 lparam_t 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 */
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 );
148 static const struct object_ops msg_queue_ops =
150 sizeof(struct msg_queue), /* size */
151 msg_queue_dump, /* dump */
152 no_get_type, /* get_type */
153 msg_queue_add_queue, /* add_queue */
154 msg_queue_remove_queue, /* remove_queue */
155 msg_queue_signaled, /* signaled */
156 msg_queue_satisfied, /* satisfied */
157 no_signal, /* signal */
158 no_get_fd, /* get_fd */
159 no_map_access, /* map_access */
160 default_get_sd, /* get_sd */
161 default_set_sd, /* set_sd */
162 no_lookup_name, /* lookup_name */
163 no_open_file, /* open_file */
164 no_close_handle, /* close_handle */
165 msg_queue_destroy /* destroy */
168 static const struct fd_ops msg_queue_fd_ops =
170 NULL, /* get_poll_events */
171 msg_queue_poll_event, /* poll_event */
173 NULL, /* get_fd_type */
175 NULL, /* queue_async */
176 NULL, /* reselect_async */
177 NULL /* cancel async */
181 static const struct object_ops thread_input_ops =
183 sizeof(struct thread_input), /* size */
184 thread_input_dump, /* dump */
185 no_get_type, /* get_type */
186 no_add_queue, /* add_queue */
187 NULL, /* remove_queue */
189 NULL, /* satisfied */
190 no_signal, /* signal */
191 no_get_fd, /* get_fd */
192 no_map_access, /* map_access */
193 default_get_sd, /* get_sd */
194 default_set_sd, /* set_sd */
195 no_lookup_name, /* lookup_name */
196 no_open_file, /* open_file */
197 no_close_handle, /* close_handle */
198 thread_input_destroy /* destroy */
201 /* pointer to input structure of foreground thread */
202 static unsigned int last_input_time;
204 static void free_message( struct message *msg );
206 /* set the caret window in a given thread input */
207 static void set_caret_window( struct thread_input *input, user_handle_t win )
209 if (!win || win != input->caret)
211 input->caret_rect.left = 0;
212 input->caret_rect.top = 0;
213 input->caret_rect.right = 0;
214 input->caret_rect.bottom = 0;
217 input->caret_hide = 1;
218 input->caret_state = 0;
221 /* create a thread input object */
222 static struct thread_input *create_thread_input( struct thread *thread )
224 struct thread_input *input;
226 if ((input = alloc_object( &thread_input_ops )))
231 input->menu_owner = 0;
232 input->move_size = 0;
234 input->cursor_count = 0;
235 list_init( &input->msg_list );
236 set_caret_window( input, 0 );
237 memset( input->keystate, 0, sizeof(input->keystate) );
239 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
241 release_object( input );
248 /* create a message queue object */
249 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
251 struct thread_input *new_input = NULL;
252 struct msg_queue *queue;
257 if (!(new_input = create_thread_input( thread ))) return NULL;
261 if ((queue = alloc_object( &msg_queue_ops )))
264 queue->wake_bits = 0;
265 queue->wake_mask = 0;
266 queue->changed_bits = 0;
267 queue->changed_mask = 0;
268 queue->paint_count = 0;
269 queue->quit_message = 0;
270 queue->cursor_count = 0;
271 queue->recv_result = NULL;
272 queue->next_timer_id = 0x7fff;
273 queue->timeout = NULL;
274 queue->input = (struct thread_input *)grab_object( input );
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] );
283 thread->queue = queue;
285 if (new_input) release_object( new_input );
289 /* free the message queue of a thread at thread exit */
290 void free_msg_queue( struct thread *thread )
292 remove_thread_hooks( thread );
293 if (!thread->queue) return;
294 release_object( thread->queue );
295 thread->queue = NULL;
298 /* change the thread input data of a given thread */
299 static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
301 struct msg_queue *queue = thread->queue;
305 thread->queue = create_msg_queue( thread, new_input );
306 return thread->queue != NULL;
310 queue->input->cursor_count -= queue->cursor_count;
311 release_object( queue->input );
313 queue->input = (struct thread_input *)grab_object( new_input );
314 new_input->cursor_count += queue->cursor_count;
318 /* get the hook table for a given thread */
319 struct hook_table *get_queue_hooks( struct thread *thread )
321 if (!thread->queue) return NULL;
322 return thread->queue->hooks;
325 /* set the hook table for a given thread, allocating the queue if needed */
326 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
328 struct msg_queue *queue = thread->queue;
329 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
330 if (queue->hooks) release_object( queue->hooks );
331 queue->hooks = hooks;
334 /* check the queue status */
335 static inline int is_signaled( struct msg_queue *queue )
337 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
340 /* set some queue bits */
341 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
343 queue->wake_bits |= bits;
344 queue->changed_bits |= bits;
345 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
348 /* clear some queue bits */
349 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
351 queue->wake_bits &= ~bits;
352 queue->changed_bits &= ~bits;
355 /* check whether msg is a keyboard message */
356 static inline int is_keyboard_msg( struct message *msg )
358 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
361 /* check if message is matched by the filter */
362 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
364 return (msg >= first && msg <= last);
367 /* check whether a message filter contains at least one potential hardware message */
368 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
370 /* hardware message ranges are (in numerical order):
371 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
372 * WM_KEYFIRST .. WM_KEYLAST
373 * WM_MOUSEFIRST .. WM_MOUSELAST
375 if (last < WM_NCMOUSEFIRST) return 0;
376 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
377 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
378 if (first > WM_MOUSELAST) return 0;
382 /* get the QS_* bit corresponding to a given hardware message */
383 static inline int get_hardware_msg_bit( struct message *msg )
385 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
386 if (is_keyboard_msg( msg )) return QS_KEY;
387 return QS_MOUSEBUTTON;
390 /* get the current thread queue, creating it if needed */
391 static inline struct msg_queue *get_current_queue(void)
393 struct msg_queue *queue = current->queue;
394 if (!queue) queue = create_msg_queue( current, NULL );
398 /* get a (pseudo-)unique id to tag hardware messages */
399 static inline unsigned int get_unique_id(void)
401 static unsigned int id;
402 if (!++id) id = 1; /* avoid an id of 0 */
406 /* try to merge a message with the last in the list; return 1 if successful */
407 static int merge_message( struct thread_input *input, const struct message *msg )
409 struct message *prev;
410 struct list *ptr = list_tail( &input->msg_list );
413 prev = LIST_ENTRY( ptr, struct message, entry );
414 if (prev->result) return 0;
415 if (prev->win && msg->win && prev->win != msg->win) return 0;
416 if (prev->msg != msg->msg) return 0;
417 if (prev->type != msg->type) return 0;
418 /* now we can merge it */
419 prev->wparam = msg->wparam;
420 prev->lparam = msg->lparam;
421 prev->time = msg->time;
422 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
424 struct hardware_msg_data *prev_data = prev->data;
425 struct hardware_msg_data *msg_data = msg->data;
426 prev_data->x = msg_data->x;
427 prev_data->y = msg_data->y;
428 prev_data->info = msg_data->info;
433 /* free a result structure */
434 static void free_result( struct message_result *result )
436 if (result->timeout) remove_timeout_user( result->timeout );
437 free( result->data );
438 if (result->callback_msg) free_message( result->callback_msg );
442 /* remove the result from the sender list it is on */
443 static inline void remove_result_from_sender( struct message_result *result )
445 assert( result->sender );
447 list_remove( &result->sender_entry );
448 result->sender = NULL;
449 if (!result->receiver) free_result( result );
452 /* store the message result in the appropriate structure */
453 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
455 res->result = result;
460 remove_timeout_user( res->timeout );
465 if (res->callback_msg)
467 /* queue the callback message in the sender queue */
468 struct callback_msg_data *data = res->callback_msg->data;
469 data->result = result;
470 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
471 set_queue_bits( res->sender, QS_SENDMESSAGE );
472 res->callback_msg = NULL;
473 remove_result_from_sender( res );
477 /* wake sender queue if waiting on this result */
478 if (list_head(&res->sender->send_result) == &res->sender_entry)
479 set_queue_bits( res->sender, QS_SMRESULT );
485 /* free a message when deleting a queue or window */
486 static void free_message( struct message *msg )
488 struct message_result *result = msg->result;
494 result->receiver = NULL;
495 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
497 else free_result( result );
503 /* remove (and free) a message from a message list */
504 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
505 enum message_kind kind )
507 list_remove( &msg->entry );
511 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
514 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
515 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
521 /* message timed out without getting a reply */
522 static void result_timeout( void *private )
524 struct message_result *result = private;
526 assert( !result->replied );
528 result->timeout = NULL;
530 if (result->msg) /* not received yet */
532 struct message *msg = result->msg;
536 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
537 result->receiver = NULL;
540 free_result( result );
545 store_message_result( result, 0, STATUS_TIMEOUT );
548 /* allocate and fill a message result structure */
549 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
550 struct msg_queue *recv_queue,
551 struct message *msg, timeout_t timeout )
553 struct message_result *result = mem_alloc( sizeof(*result) );
557 result->sender = send_queue;
558 result->receiver = recv_queue;
561 result->data_size = 0;
562 result->timeout = NULL;
564 if (msg->type == MSG_CALLBACK)
566 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
573 callback_msg->type = MSG_CALLBACK_RESULT;
574 callback_msg->win = msg->win;
575 callback_msg->msg = msg->msg;
576 callback_msg->wparam = 0;
577 callback_msg->lparam = 0;
578 callback_msg->time = get_tick_count();
579 callback_msg->result = NULL;
580 /* steal the data from the original message */
581 callback_msg->data = msg->data;
582 callback_msg->data_size = msg->data_size;
586 result->callback_msg = callback_msg;
587 list_add_head( &send_queue->callback_result, &result->sender_entry );
591 result->callback_msg = NULL;
592 list_add_head( &send_queue->send_result, &result->sender_entry );
595 if (timeout != TIMEOUT_INFINITE)
596 result->timeout = add_timeout_user( timeout, result_timeout, result );
601 /* receive a message, removing it from the sent queue */
602 static void receive_message( struct msg_queue *queue, struct message *msg,
603 struct get_message_reply *reply )
605 struct message_result *result = msg->result;
607 reply->total = msg->data_size;
608 if (msg->data_size > get_reply_max_size())
610 set_error( STATUS_BUFFER_OVERFLOW );
613 reply->type = msg->type;
614 reply->win = msg->win;
615 reply->msg = msg->msg;
616 reply->wparam = msg->wparam;
617 reply->lparam = msg->lparam;
618 reply->time = msg->time;
620 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
622 list_remove( &msg->entry );
623 /* put the result on the receiver result stack */
627 result->recv_next = queue->recv_result;
628 queue->recv_result = result;
631 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
634 /* set the result of the current received message */
635 static void reply_message( struct msg_queue *queue, lparam_t result,
636 unsigned int error, int remove, const void *data, data_size_t len )
638 struct message_result *res = queue->recv_result;
642 queue->recv_result = res->recv_next;
643 res->receiver = NULL;
644 if (!res->sender) /* no one waiting for it */
652 if (len && (res->data = memdup( data, len ))) res->data_size = len;
653 store_message_result( res, result, error );
657 static int match_window( user_handle_t win, user_handle_t msg_win )
660 if (win == -1 || win == 1) return !msg_win;
661 if (msg_win == win) return 1;
662 return is_child_window( win, msg_win );
665 /* retrieve a posted message */
666 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
667 unsigned int first, unsigned int last, unsigned int flags,
668 struct get_message_reply *reply )
672 /* check against the filters */
673 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
675 if (!match_window( win, msg->win )) continue;
676 if (!check_msg_filter( msg->msg, first, last )) continue;
677 goto found; /* found one */
681 /* return it to the app */
683 reply->total = msg->data_size;
684 if (msg->data_size > get_reply_max_size())
686 set_error( STATUS_BUFFER_OVERFLOW );
689 reply->type = msg->type;
690 reply->win = msg->win;
691 reply->msg = msg->msg;
692 reply->wparam = msg->wparam;
693 reply->lparam = msg->lparam;
694 reply->time = msg->time;
696 if (flags & PM_REMOVE)
700 set_reply_data_ptr( msg->data, msg->data_size );
704 remove_queue_message( queue, msg, POST_MESSAGE );
706 else if (msg->data) set_reply_data( msg->data, msg->data_size );
711 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
712 struct get_message_reply *reply )
714 if (queue->quit_message)
717 reply->type = MSG_POSTED;
719 reply->msg = WM_QUIT;
720 reply->wparam = queue->exit_code;
722 reply->time = get_tick_count();
724 if (flags & PM_REMOVE)
726 queue->quit_message = 0;
727 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
728 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
736 /* empty a message list and free all the messages */
737 static void empty_msg_list( struct list *list )
741 while ((ptr = list_head( list )) != NULL)
743 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
744 list_remove( &msg->entry );
749 /* cleanup all pending results when deleting a queue */
750 static void cleanup_results( struct msg_queue *queue )
754 while ((entry = list_head( &queue->send_result )) != NULL)
756 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
759 while ((entry = list_head( &queue->callback_result )) != NULL)
761 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
764 while (queue->recv_result)
765 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
768 /* check if the thread owning the queue is hung (not checking for messages) */
769 static int is_queue_hung( struct msg_queue *queue )
771 struct wait_queue_entry *entry;
773 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
774 return 0; /* less than 5 seconds since last get message -> not hung */
776 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
778 if (entry->thread->queue == queue)
779 return 0; /* thread is waiting on queue -> not hung */
784 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
786 struct msg_queue *queue = (struct msg_queue *)obj;
787 struct process *process = entry->thread->process;
789 /* a thread can only wait on its own queue */
790 if (entry->thread->queue != queue)
792 set_error( STATUS_ACCESS_DENIED );
795 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
797 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
798 set_fd_events( queue->fd, POLLIN );
799 add_queue( obj, entry );
803 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
805 struct msg_queue *queue = (struct msg_queue *)obj;
807 remove_queue( obj, entry );
808 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
809 set_fd_events( queue->fd, 0 );
812 static void msg_queue_dump( struct object *obj, int verbose )
814 struct msg_queue *queue = (struct msg_queue *)obj;
815 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
816 queue->wake_bits, queue->wake_mask );
819 static int msg_queue_signaled( struct object *obj, struct thread *thread )
821 struct msg_queue *queue = (struct msg_queue *)obj;
826 if ((ret = check_fd_events( queue->fd, POLLIN )))
827 /* stop waiting on select() if we are signaled */
828 set_fd_events( queue->fd, 0 );
829 else if (!list_empty( &obj->wait_queue ))
830 /* restart waiting on poll() if we are no longer signaled */
831 set_fd_events( queue->fd, POLLIN );
833 return ret || is_signaled( queue );
836 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
838 struct msg_queue *queue = (struct msg_queue *)obj;
839 queue->wake_mask = 0;
840 queue->changed_mask = 0;
841 return 0; /* Not abandoned */
844 static void msg_queue_destroy( struct object *obj )
846 struct msg_queue *queue = (struct msg_queue *)obj;
850 cleanup_results( queue );
851 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
853 while ((ptr = list_head( &queue->pending_timers )))
855 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
856 list_remove( &timer->entry );
859 while ((ptr = list_head( &queue->expired_timers )))
861 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
862 list_remove( &timer->entry );
865 if (queue->timeout) remove_timeout_user( queue->timeout );
868 queue->input->cursor_count -= queue->cursor_count;
869 release_object( queue->input );
871 if (queue->hooks) release_object( queue->hooks );
872 if (queue->fd) release_object( queue->fd );
875 static void msg_queue_poll_event( struct fd *fd, int event )
877 struct msg_queue *queue = get_fd_user( fd );
878 assert( queue->obj.ops == &msg_queue_ops );
880 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
881 else set_fd_events( queue->fd, 0 );
882 wake_up( &queue->obj, 0 );
885 static void thread_input_dump( struct object *obj, int verbose )
887 struct thread_input *input = (struct thread_input *)obj;
888 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
889 input->focus, input->capture, input->active );
892 static void thread_input_destroy( struct object *obj )
894 struct thread_input *input = (struct thread_input *)obj;
896 empty_msg_list( &input->msg_list );
899 if (input->desktop->foreground_input == input) input->desktop->foreground_input = NULL;
900 release_object( input->desktop );
904 /* fix the thread input data when a window is destroyed */
905 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
907 struct thread_input *input = queue->input;
909 if (window == input->focus) input->focus = 0;
910 if (window == input->capture) input->capture = 0;
911 if (window == input->active) input->active = 0;
912 if (window == input->menu_owner) input->menu_owner = 0;
913 if (window == input->move_size) input->move_size = 0;
914 if (window == input->caret) set_caret_window( input, 0 );
917 /* check if the specified window can be set in the input data of a given queue */
918 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
920 struct thread *thread;
923 if (!window) return 1; /* we can always clear the data */
925 if ((thread = get_window_thread( window )))
927 ret = (queue->input == thread->queue->input);
928 if (!ret) set_error( STATUS_ACCESS_DENIED );
929 release_object( thread );
931 else set_error( STATUS_INVALID_HANDLE );
936 /* make sure the specified thread has a queue */
937 int init_thread_queue( struct thread *thread )
939 if (thread->queue) return 1;
940 return (create_msg_queue( thread, NULL ) != NULL);
943 /* attach two thread input data structures */
944 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
946 struct desktop *desktop;
947 struct thread_input *input;
950 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
951 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
952 input = (struct thread_input *)grab_object( thread_to->queue->input );
953 if (input->desktop != desktop)
955 set_error( STATUS_ACCESS_DENIED );
956 release_object( input );
957 release_object( desktop );
960 release_object( desktop );
962 ret = assign_thread_input( thread_from, input );
963 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
964 release_object( input );
968 /* detach two thread input data structures */
969 void detach_thread_input( struct thread *thread_from )
971 struct thread_input *input;
973 if ((input = create_thread_input( thread_from )))
975 assign_thread_input( thread_from, input );
976 release_object( input );
981 /* set the next timer to expire */
982 static void set_next_timer( struct msg_queue *queue )
988 remove_timeout_user( queue->timeout );
989 queue->timeout = NULL;
991 if ((ptr = list_head( &queue->pending_timers )))
993 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
994 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
996 /* set/clear QS_TIMER bit */
997 if (list_empty( &queue->expired_timers ))
998 clear_queue_bits( queue, QS_TIMER );
1000 set_queue_bits( queue, QS_TIMER );
1003 /* find a timer from its window and id */
1004 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1005 unsigned int msg, lparam_t id )
1009 /* we need to search both lists */
1011 LIST_FOR_EACH( ptr, &queue->pending_timers )
1013 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1014 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1016 LIST_FOR_EACH( ptr, &queue->expired_timers )
1018 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1019 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1024 /* callback for the next timer expiration */
1025 static void timer_callback( void *private )
1027 struct msg_queue *queue = private;
1030 queue->timeout = NULL;
1031 /* move on to the next timer */
1032 ptr = list_head( &queue->pending_timers );
1034 list_add_tail( &queue->expired_timers, ptr );
1035 set_next_timer( queue );
1038 /* link a timer at its rightful place in the queue list */
1039 static void link_timer( struct msg_queue *queue, struct timer *timer )
1043 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1045 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1046 if (t->when >= timer->when) break;
1048 list_add_before( ptr, &timer->entry );
1051 /* remove a timer from the queue timer list and free it */
1052 static void free_timer( struct msg_queue *queue, struct timer *timer )
1054 list_remove( &timer->entry );
1056 set_next_timer( queue );
1059 /* restart an expired timer */
1060 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1062 list_remove( &timer->entry );
1063 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1064 link_timer( queue, timer );
1065 set_next_timer( queue );
1068 /* find an expired timer matching the filtering parameters */
1069 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1070 unsigned int get_first, unsigned int get_last,
1075 LIST_FOR_EACH( ptr, &queue->expired_timers )
1077 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1078 if (win && timer->win != win) continue;
1079 if (check_msg_filter( timer->msg, get_first, get_last ))
1081 if (remove) restart_timer( queue, timer );
1089 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1091 struct timer *timer = mem_alloc( sizeof(*timer) );
1094 timer->rate = max( rate, 1 );
1095 timer->when = current_time + (timeout_t)timer->rate * 10000;
1096 link_timer( queue, timer );
1097 /* check if we replaced the next timer */
1098 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1103 /* change the input key state for a given key */
1104 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1108 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1109 keystate[key] |= down;
1111 else keystate[key] &= ~0x80;
1114 /* update the input key state for a keyboard message */
1115 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1116 const struct message *msg )
1123 case WM_LBUTTONDOWN:
1124 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1127 set_input_key_state( keystate, VK_LBUTTON, down );
1129 case WM_MBUTTONDOWN:
1130 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1133 set_input_key_state( keystate, VK_MBUTTON, down );
1135 case WM_RBUTTONDOWN:
1136 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1139 set_input_key_state( keystate, VK_RBUTTON, down );
1141 case WM_XBUTTONDOWN:
1142 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1145 if (msg->wparam == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1146 else if (msg->wparam == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1150 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1154 key = (unsigned char)msg->wparam;
1155 set_input_key_state( keystate, key, down );
1160 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1161 set_input_key_state( keystate, VK_CONTROL, down );
1165 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1166 set_input_key_state( keystate, VK_MENU, down );
1170 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1171 set_input_key_state( keystate, VK_SHIFT, down );
1178 /* release the hardware message currently being processed by the given thread */
1179 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1180 int remove, user_handle_t new_win )
1182 struct thread_input *input = queue->input;
1183 struct message *msg;
1185 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1187 if (msg->unique_id == hw_id) break;
1189 if (&msg->entry == &input->msg_list) return; /* not found */
1191 /* clear the queue bit for that message */
1192 if (remove || new_win)
1194 struct message *other;
1197 clr_bit = get_hardware_msg_bit( msg );
1198 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1200 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1206 if (clr_bit) clear_queue_bits( queue, clr_bit );
1209 if (new_win) /* set the new window */
1211 struct thread *owner = get_window_thread( new_win );
1215 if (owner->queue->input != input)
1217 list_remove( &msg->entry );
1218 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1220 free_message( msg );
1221 release_object( owner );
1224 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1226 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1228 release_object( owner );
1233 update_input_key_state( input->desktop, input->keystate, msg );
1234 list_remove( &msg->entry );
1235 free_message( msg );
1239 /* find the window that should receive a given hardware message */
1240 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1241 struct message *msg, unsigned int *msg_code )
1243 struct hardware_msg_data *data = msg->data;
1244 user_handle_t win = 0;
1246 *msg_code = msg->msg;
1247 if (is_keyboard_msg( msg ))
1249 if (input && !(win = input->focus))
1251 win = input->active;
1252 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1255 else /* mouse message */
1257 if (!input || !(win = input->capture))
1259 if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
1260 win = window_from_point( desktop, data->x, data->y );
1266 /* set the cursor position, clipping to the cursor clip rect */
1267 static void set_cursor_pos( struct desktop *desktop, int x, int y )
1269 desktop->cursor_x = min( max( x, desktop->cursor_clip.left ), desktop->cursor_clip.right - 1 );
1270 desktop->cursor_y = min( max( y, desktop->cursor_clip.top ), desktop->cursor_clip.bottom - 1 );
1273 /* queue a hardware message into a given thread input */
1274 static void queue_hardware_message( struct desktop *desktop, struct message *msg )
1277 struct thread *thread;
1278 struct thread_input *input;
1279 unsigned int msg_code;
1280 struct hardware_msg_data *data = msg->data;
1282 update_input_key_state( desktop, desktop->keystate, msg );
1283 last_input_time = get_tick_count();
1285 if (is_keyboard_msg( msg ))
1287 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1288 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1289 msg->lparam &= ~(KF_EXTENDED << 16);
1293 if (msg->msg == WM_MOUSEMOVE) set_cursor_pos( desktop, data->x, data->y );
1294 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1295 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1296 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1297 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1298 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1299 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1300 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1302 data->x = desktop->cursor_x;
1303 data->y = desktop->cursor_y;
1305 if (msg->win && (thread = get_window_thread( msg->win )))
1307 input = thread->queue->input;
1308 release_object( thread );
1310 else input = desktop->foreground_input;
1312 win = find_hardware_message_window( desktop, input, msg, &msg_code );
1313 if (!win || !(thread = get_window_thread(win)))
1315 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1319 input = thread->queue->input;
1321 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1324 msg->unique_id = 0; /* will be set once we return it to the app */
1325 list_add_tail( &input->msg_list, &msg->entry );
1326 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1328 release_object( thread );
1331 /* queue a hardware message for a mouse event */
1332 static void queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input )
1334 struct hardware_msg_data *msg_data;
1335 struct message *msg;
1336 unsigned int i, time, flags;
1339 static const unsigned int messages[] =
1341 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1342 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1343 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1344 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1345 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1346 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1347 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1348 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1349 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1350 0, /* 0x0200 = unused */
1351 0, /* 0x0400 = unused */
1352 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1353 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1356 flags = input->mouse.flags;
1357 time = input->mouse.time;
1358 if (!time) time = get_tick_count();
1360 if (flags & MOUSEEVENTF_MOVE)
1362 if (flags & MOUSEEVENTF_ABSOLUTE)
1366 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1367 x == desktop->cursor_x && y == desktop->cursor_y)
1368 flags &= ~MOUSEEVENTF_MOVE;
1372 x = desktop->cursor_x + input->mouse.x;
1373 y = desktop->cursor_y + input->mouse.y;
1378 x = desktop->cursor_x;
1379 y = desktop->cursor_y;
1382 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1384 if (!messages[i]) continue;
1385 if (!(flags & (1 << i))) continue;
1387 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1388 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1393 memset( msg_data, 0, sizeof(*msg_data) );
1395 msg->type = MSG_HARDWARE;
1396 msg->win = get_user_full_handle( win );
1397 msg->msg = messages[i];
1398 msg->wparam = input->mouse.data << 16;
1402 msg->data = msg_data;
1403 msg->data_size = sizeof(*msg_data);
1406 msg_data->info = input->mouse.info;
1408 queue_hardware_message( desktop, msg );
1412 /* queue a hardware message for a keyboard event */
1413 static void queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input )
1415 struct hardware_msg_data *msg_data;
1416 struct message *msg;
1417 unsigned char vkey = input->kbd.vkey;
1419 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1420 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1425 memset( msg_data, 0, sizeof(*msg_data) );
1427 msg->type = MSG_HARDWARE;
1428 msg->win = get_user_full_handle( win );
1429 msg->lparam = (input->kbd.scan << 16) | 1; /* repeat count */
1430 msg->time = input->kbd.time;
1432 msg->data = msg_data;
1433 msg->data_size = sizeof(*msg_data);
1434 msg_data->info = input->kbd.info;
1435 if (!msg->time) msg->time = get_tick_count();
1437 if (input->kbd.flags & KEYEVENTF_UNICODE)
1439 msg->wparam = VK_PACKET;
1448 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1453 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1458 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1461 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) msg->lparam |= KF_EXTENDED << 16;
1462 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1463 if (input->kbd.flags & KEYEVENTF_KEYUP) msg->lparam |= (KF_REPEAT | KF_UP) << 16;
1464 else if (desktop->keystate[vkey] & 0x80) msg->lparam |= KF_REPEAT << 16;
1469 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1475 if (input->kbd.flags & KEYEVENTF_KEYUP)
1477 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1478 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1479 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1480 msg->msg = WM_SYSKEYUP;
1481 desktop->keystate[VK_MENU] &= ~0x02;
1485 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1486 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1487 msg->msg = WM_SYSKEYDOWN;
1488 desktop->keystate[VK_MENU] |= 0x02;
1494 /* send WM_SYSKEYUP on release if Alt still pressed */
1495 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1496 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1497 msg->msg = WM_SYSKEYUP;
1498 desktop->keystate[VK_MENU] &= ~0x02;
1502 /* send WM_SYSKEY for Alt-anykey and for F10 */
1503 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1504 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1507 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1508 desktop->keystate[VK_MENU] &= ~0x02;
1512 queue_hardware_message( desktop, msg );
1515 /* queue a hardware message for a custom type of event */
1516 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1517 const hw_input_t *input )
1519 struct hardware_msg_data *msg_data;
1520 struct message *msg;
1522 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1523 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1528 memset( msg_data, 0, sizeof(*msg_data) );
1530 msg->type = MSG_HARDWARE;
1531 msg->win = get_user_full_handle( win );
1532 msg->msg = input->hw.msg;
1534 msg->lparam = input->hw.lparam;
1535 msg->time = get_tick_count();
1537 msg->data = msg_data;
1538 msg->data_size = sizeof(*msg_data);
1540 queue_hardware_message( desktop, msg );
1543 /* check message filter for a hardware message */
1544 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1545 user_handle_t filter_win, unsigned int first, unsigned int last )
1547 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1549 /* we can only test the window for a keyboard message since the
1550 * dest window for a mouse message depends on hittest */
1551 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1553 /* the message code is final for a keyboard message, we can simply check it */
1554 return check_msg_filter( msg_code, first, last );
1556 else /* mouse message */
1558 /* we need to check all possible values that the message can have in the end */
1560 if (check_msg_filter( msg_code, first, last )) return 1;
1561 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1563 /* all other messages can become non-client messages */
1564 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1566 /* clicks can become double-clicks or non-client double-clicks */
1567 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1568 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1570 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1571 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1578 /* find a hardware message for the given queue */
1579 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1580 unsigned int first, unsigned int last, struct get_message_reply *reply )
1582 struct thread_input *input = thread->queue->input;
1583 struct thread *win_thread;
1586 int clear_bits, got_one = 0;
1587 unsigned int msg_code;
1589 ptr = list_head( &input->msg_list );
1594 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1595 if (msg->unique_id == hw_id) break;
1596 ptr = list_next( &input->msg_list, ptr );
1598 if (!ptr) ptr = list_head( &input->msg_list );
1599 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1602 if (ptr == list_head( &input->msg_list ))
1603 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1605 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1609 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1610 struct hardware_msg_data *data = msg->data;
1612 ptr = list_next( &input->msg_list, ptr );
1613 win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
1614 if (!win || !(win_thread = get_window_thread( win )))
1616 /* no window at all, remove it */
1617 update_input_key_state( input->desktop, input->keystate, msg );
1618 list_remove( &msg->entry );
1619 free_message( msg );
1622 if (win_thread != thread)
1624 if (win_thread->queue->input == input)
1626 /* wake the other thread */
1627 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1632 /* for another thread input, drop it */
1633 update_input_key_state( input->desktop, input->keystate, msg );
1634 list_remove( &msg->entry );
1635 free_message( msg );
1637 release_object( win_thread );
1640 release_object( win_thread );
1642 /* if we already got a message for another thread, or if it doesn't
1643 * match the filter we skip it */
1644 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1646 clear_bits &= ~get_hardware_msg_bit( msg );
1649 /* now we can return it */
1650 if (!msg->unique_id) msg->unique_id = get_unique_id();
1651 reply->type = MSG_HARDWARE;
1653 reply->msg = msg_code;
1654 reply->wparam = msg->wparam;
1655 reply->lparam = msg->lparam;
1656 reply->time = msg->time;
1658 data->hw_id = msg->unique_id;
1659 set_reply_data( msg->data, msg->data_size );
1662 /* nothing found, clear the hardware queue bits */
1663 clear_queue_bits( thread->queue, clear_bits );
1667 /* increment (or decrement if 'incr' is negative) the queue paint count */
1668 void inc_queue_paint_count( struct thread *thread, int incr )
1670 struct msg_queue *queue = thread->queue;
1674 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1676 if (queue->paint_count)
1677 set_queue_bits( queue, QS_PAINT );
1679 clear_queue_bits( queue, QS_PAINT );
1683 /* remove all messages and timers belonging to a certain window */
1684 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1686 struct msg_queue *queue = thread->queue;
1694 ptr = list_head( &queue->pending_timers );
1697 struct list *next = list_next( &queue->pending_timers, ptr );
1698 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1699 if (timer->win == win) free_timer( queue, timer );
1702 ptr = list_head( &queue->expired_timers );
1705 struct list *next = list_next( &queue->expired_timers, ptr );
1706 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1707 if (timer->win == win) free_timer( queue, timer );
1711 /* remove messages */
1712 for (i = 0; i < NB_MSG_KINDS; i++)
1714 struct list *ptr, *next;
1716 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1718 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1719 if (msg->win == win) remove_queue_message( queue, msg, i );
1723 thread_input_cleanup_window( queue, win );
1726 /* post a message to a window; used by socket handling */
1727 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1729 struct message *msg;
1730 struct thread *thread = get_window_thread( win );
1732 if (!thread) return;
1734 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1736 msg->type = MSG_POSTED;
1737 msg->win = get_user_full_handle( win );
1739 msg->wparam = wparam;
1740 msg->lparam = lparam;
1741 msg->time = get_tick_count();
1746 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1747 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1749 release_object( thread );
1752 /* post a win event */
1753 void post_win_event( struct thread *thread, unsigned int event,
1754 user_handle_t win, unsigned int object_id,
1755 unsigned int child_id, client_ptr_t hook_proc,
1756 const WCHAR *module, data_size_t module_size,
1759 struct message *msg;
1761 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1763 struct winevent_msg_data *data;
1765 msg->type = MSG_WINEVENT;
1766 msg->win = get_user_full_handle( win );
1768 msg->wparam = object_id;
1769 msg->lparam = child_id;
1770 msg->time = get_tick_count();
1773 if ((data = malloc( sizeof(*data) + module_size )))
1776 data->tid = get_thread_id( current );
1777 data->hook_proc = hook_proc;
1778 memcpy( data + 1, module, module_size );
1781 msg->data_size = sizeof(*data) + module_size;
1783 if (debug_level > 1)
1784 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1785 get_thread_id(thread), event, win, object_id, child_id );
1786 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1787 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1795 /* check if the thread owning the window is hung */
1796 DECL_HANDLER(is_window_hung)
1798 struct thread *thread;
1800 thread = get_window_thread( req->win );
1803 reply->is_hung = is_queue_hung( thread->queue );
1804 release_object( thread );
1806 else reply->is_hung = 0;
1810 /* get the message queue of the current thread */
1811 DECL_HANDLER(get_msg_queue)
1813 struct msg_queue *queue = get_current_queue();
1816 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1820 /* set the file descriptor associated to the current thread queue */
1821 DECL_HANDLER(set_queue_fd)
1823 struct msg_queue *queue = get_current_queue();
1827 if (queue->fd) /* fd can only be set once */
1829 set_error( STATUS_ACCESS_DENIED );
1832 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1834 if ((unix_fd = get_file_unix_fd( file )) != -1)
1836 if ((unix_fd = dup( unix_fd )) != -1)
1837 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1841 release_object( file );
1845 /* set the current message queue wakeup mask */
1846 DECL_HANDLER(set_queue_mask)
1848 struct msg_queue *queue = get_current_queue();
1852 queue->wake_mask = req->wake_mask;
1853 queue->changed_mask = req->changed_mask;
1854 reply->wake_bits = queue->wake_bits;
1855 reply->changed_bits = queue->changed_bits;
1856 if (is_signaled( queue ))
1858 /* if skip wait is set, do what would have been done in the subsequent wait */
1859 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1860 else wake_up( &queue->obj, 0 );
1866 /* get the current message queue status */
1867 DECL_HANDLER(get_queue_status)
1869 struct msg_queue *queue = current->queue;
1872 reply->wake_bits = queue->wake_bits;
1873 reply->changed_bits = queue->changed_bits;
1874 if (req->clear) queue->changed_bits = 0;
1876 else reply->wake_bits = reply->changed_bits = 0;
1880 /* send a message to a thread queue */
1881 DECL_HANDLER(send_message)
1883 struct message *msg;
1884 struct msg_queue *send_queue = get_current_queue();
1885 struct msg_queue *recv_queue = NULL;
1886 struct thread *thread = NULL;
1888 if (!(thread = get_thread_from_id( req->id ))) return;
1890 if (!(recv_queue = thread->queue))
1892 set_error( STATUS_INVALID_PARAMETER );
1893 release_object( thread );
1896 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1898 set_error( STATUS_TIMEOUT );
1899 release_object( thread );
1903 if ((msg = mem_alloc( sizeof(*msg) )))
1905 msg->type = req->type;
1906 msg->win = get_user_full_handle( req->win );
1907 msg->msg = req->msg;
1908 msg->wparam = req->wparam;
1909 msg->lparam = req->lparam;
1910 msg->time = get_tick_count();
1913 msg->data_size = get_req_data_size();
1915 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1918 release_object( thread );
1924 case MSG_OTHER_PROCESS:
1928 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1930 free_message( msg );
1935 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1936 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1939 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1940 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1942 case MSG_HARDWARE: /* should use send_hardware_message instead */
1943 case MSG_CALLBACK_RESULT: /* cannot send this one */
1945 set_error( STATUS_INVALID_PARAMETER );
1950 release_object( thread );
1953 /* send a hardware message to a thread queue */
1954 DECL_HANDLER(send_hardware_message)
1956 struct thread *thread = NULL;
1957 struct desktop *desktop;
1961 if (!(thread = get_window_thread( req->win ))) return;
1962 desktop = (struct desktop *)grab_object( thread->queue->input->desktop );
1964 else if (!(desktop = get_thread_desktop( current, 0 ))) return;
1966 switch (req->input.type)
1969 queue_mouse_message( desktop, req->win, &req->input );
1971 case INPUT_KEYBOARD:
1972 queue_keyboard_message( desktop, req->win, &req->input );
1974 case INPUT_HARDWARE:
1975 queue_custom_hardware_message( desktop, req->win, &req->input );
1978 set_error( STATUS_INVALID_PARAMETER );
1980 if (thread) release_object( thread );
1981 release_object( desktop );
1984 /* post a quit message to the current queue */
1985 DECL_HANDLER(post_quit_message)
1987 struct msg_queue *queue = get_current_queue();
1992 queue->quit_message = 1;
1993 queue->exit_code = req->exit_code;
1994 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1997 /* get a message from the current queue */
1998 DECL_HANDLER(get_message)
2000 struct timer *timer;
2002 struct msg_queue *queue = get_current_queue();
2003 user_handle_t get_win = get_user_full_handle( req->get_win );
2004 unsigned int filter = req->flags >> 16;
2006 reply->active_hooks = get_active_hooks();
2009 queue->last_get_msg = current_time;
2010 if (!filter) filter = QS_ALLINPUT;
2012 /* first check for sent messages */
2013 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2015 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2016 receive_message( queue, msg, reply );
2020 /* clear changed bits so we can wait on them if we don't find a message */
2021 if (filter & QS_POSTMESSAGE)
2023 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2024 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2026 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2027 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2029 /* then check for posted messages */
2030 if ((filter & QS_POSTMESSAGE) &&
2031 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2034 /* only check for quit messages if not posted messages pending.
2035 * note: the quit message isn't filtered */
2036 if (get_quit_message( queue, req->flags, reply ))
2039 /* then check for any raw hardware message */
2040 if ((filter & QS_INPUT) &&
2041 filter_contains_hw_range( req->get_first, req->get_last ) &&
2042 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
2045 /* now check for WM_PAINT */
2046 if ((filter & QS_PAINT) &&
2047 queue->paint_count &&
2048 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2049 (reply->win = find_window_to_repaint( get_win, current )))
2051 reply->type = MSG_POSTED;
2052 reply->msg = WM_PAINT;
2055 reply->time = get_tick_count();
2059 /* now check for timer */
2060 if ((filter & QS_TIMER) &&
2061 (timer = find_expired_timer( queue, get_win, req->get_first,
2062 req->get_last, (req->flags & PM_REMOVE) )))
2064 reply->type = MSG_POSTED;
2065 reply->win = timer->win;
2066 reply->msg = timer->msg;
2067 reply->wparam = timer->id;
2068 reply->lparam = timer->lparam;
2069 reply->time = get_tick_count();
2070 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2071 set_event( current->process->idle_event );
2075 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2076 queue->wake_mask = req->wake_mask;
2077 queue->changed_mask = req->changed_mask;
2078 set_error( STATUS_PENDING ); /* FIXME */
2082 /* reply to a sent message */
2083 DECL_HANDLER(reply_message)
2085 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2086 else if (current->queue->recv_result)
2087 reply_message( current->queue, req->result, 0, req->remove,
2088 get_req_data(), get_req_data_size() );
2092 /* accept the current hardware message */
2093 DECL_HANDLER(accept_hardware_message)
2096 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
2098 set_error( STATUS_ACCESS_DENIED );
2102 /* retrieve the reply for the last message sent */
2103 DECL_HANDLER(get_message_reply)
2105 struct message_result *result;
2107 struct msg_queue *queue = current->queue;
2111 set_error( STATUS_PENDING );
2114 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2116 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2117 if (result->replied || req->cancel)
2119 if (result->replied)
2121 reply->result = result->result;
2122 set_error( result->error );
2125 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2126 set_reply_data_ptr( result->data, data_len );
2127 result->data = NULL;
2128 result->data_size = 0;
2131 remove_result_from_sender( result );
2133 entry = list_head( &queue->send_result );
2134 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2137 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2138 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
2142 else set_error( STATUS_ACCESS_DENIED );
2146 /* set a window timer */
2147 DECL_HANDLER(set_win_timer)
2149 struct timer *timer;
2150 struct msg_queue *queue;
2151 struct thread *thread = NULL;
2152 user_handle_t win = 0;
2153 lparam_t id = req->id;
2157 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2159 set_error( STATUS_INVALID_HANDLE );
2162 if (thread->process != current->process)
2164 release_object( thread );
2165 set_error( STATUS_ACCESS_DENIED );
2168 queue = thread->queue;
2169 /* remove it if it existed already */
2170 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2174 queue = get_current_queue();
2175 /* look for a timer with this id */
2176 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2178 /* free and reuse id */
2179 free_timer( queue, timer );
2183 /* find a free id for it */
2186 id = queue->next_timer_id;
2187 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2189 while (find_timer( queue, 0, req->msg, id ));
2193 if ((timer = set_timer( queue, req->rate )))
2196 timer->msg = req->msg;
2198 timer->lparam = req->lparam;
2201 if (thread) release_object( thread );
2204 /* kill a window timer */
2205 DECL_HANDLER(kill_win_timer)
2207 struct timer *timer;
2208 struct thread *thread;
2209 user_handle_t win = 0;
2213 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2215 set_error( STATUS_INVALID_HANDLE );
2218 if (thread->process != current->process)
2220 release_object( thread );
2221 set_error( STATUS_ACCESS_DENIED );
2225 else thread = (struct thread *)grab_object( current );
2227 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2228 free_timer( thread->queue, timer );
2230 set_error( STATUS_INVALID_PARAMETER );
2232 release_object( thread );
2236 /* attach (or detach) thread inputs */
2237 DECL_HANDLER(attach_thread_input)
2239 struct thread *thread_from = get_thread_from_id( req->tid_from );
2240 struct thread *thread_to = get_thread_from_id( req->tid_to );
2242 if (!thread_from || !thread_to)
2244 if (thread_from) release_object( thread_from );
2245 if (thread_to) release_object( thread_to );
2248 if (thread_from != thread_to)
2250 if (req->attach) attach_thread_input( thread_from, thread_to );
2253 if (thread_from->queue && thread_to->queue &&
2254 thread_from->queue->input == thread_to->queue->input)
2255 detach_thread_input( thread_from );
2257 set_error( STATUS_ACCESS_DENIED );
2260 else set_error( STATUS_ACCESS_DENIED );
2261 release_object( thread_from );
2262 release_object( thread_to );
2266 /* get thread input data */
2267 DECL_HANDLER(get_thread_input)
2269 struct thread *thread = NULL;
2270 struct desktop *desktop;
2271 struct thread_input *input;
2275 if (!(thread = get_thread_from_id( req->tid ))) return;
2276 if (!(desktop = get_thread_desktop( thread, 0 )))
2278 release_object( thread );
2281 input = thread->queue ? thread->queue->input : NULL;
2285 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2286 input = desktop->foreground_input; /* get the foreground thread info */
2291 reply->focus = input->focus;
2292 reply->capture = input->capture;
2293 reply->active = input->active;
2294 reply->menu_owner = input->menu_owner;
2295 reply->move_size = input->move_size;
2296 reply->caret = input->caret;
2297 reply->cursor = input->cursor;
2298 reply->show_count = input->cursor_count;
2299 reply->rect = input->caret_rect;
2302 /* foreground window is active window of foreground thread */
2303 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2304 if (thread) release_object( thread );
2305 release_object( desktop );
2309 /* retrieve queue keyboard state for a given thread */
2310 DECL_HANDLER(get_key_state)
2312 struct thread *thread;
2313 struct desktop *desktop;
2314 data_size_t size = min( 256, get_reply_max_size() );
2316 if (!req->tid) /* get global async key state */
2318 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2321 reply->state = desktop->keystate[req->key & 0xff];
2322 desktop->keystate[req->key & 0xff] &= ~0x40;
2324 set_reply_data( desktop->keystate, size );
2325 release_object( desktop );
2329 if (!(thread = get_thread_from_id( req->tid ))) return;
2332 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2333 set_reply_data( thread->queue->input->keystate, size );
2335 release_object( thread );
2340 /* set queue keyboard state for a given thread */
2341 DECL_HANDLER(set_key_state)
2343 struct thread *thread;
2344 struct desktop *desktop;
2345 data_size_t size = min( 256, get_req_data_size() );
2347 if (!req->tid) /* set global async key state */
2349 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2350 memcpy( desktop->keystate, get_req_data(), size );
2351 release_object( desktop );
2355 if (!(thread = get_thread_from_id( req->tid ))) return;
2356 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2357 release_object( thread );
2362 /* set the system foreground window */
2363 DECL_HANDLER(set_foreground_window)
2365 struct thread *thread = NULL;
2366 struct desktop *desktop;
2367 struct msg_queue *queue = get_current_queue();
2369 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2370 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2371 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2372 reply->send_msg_new = FALSE;
2374 if (is_top_level_window( req->handle ) &&
2375 ((thread = get_window_thread( req->handle ))) &&
2376 (thread->queue->input->desktop == desktop))
2378 desktop->foreground_input = thread->queue->input;
2379 reply->send_msg_new = (desktop->foreground_input != queue->input);
2381 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2383 if (thread) release_object( thread );
2384 release_object( desktop );
2388 /* set the current thread focus window */
2389 DECL_HANDLER(set_focus_window)
2391 struct msg_queue *queue = get_current_queue();
2393 reply->previous = 0;
2394 if (queue && check_queue_input_window( queue, req->handle ))
2396 reply->previous = queue->input->focus;
2397 queue->input->focus = get_user_full_handle( req->handle );
2402 /* set the current thread active window */
2403 DECL_HANDLER(set_active_window)
2405 struct msg_queue *queue = get_current_queue();
2407 reply->previous = 0;
2408 if (queue && check_queue_input_window( queue, req->handle ))
2410 if (!req->handle || make_window_active( req->handle ))
2412 reply->previous = queue->input->active;
2413 queue->input->active = get_user_full_handle( req->handle );
2415 else set_error( STATUS_INVALID_HANDLE );
2420 /* set the current thread capture window */
2421 DECL_HANDLER(set_capture_window)
2423 struct msg_queue *queue = get_current_queue();
2425 reply->previous = reply->full_handle = 0;
2426 if (queue && check_queue_input_window( queue, req->handle ))
2428 struct thread_input *input = queue->input;
2430 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2431 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2433 set_error(STATUS_ACCESS_DENIED);
2436 reply->previous = input->capture;
2437 input->capture = get_user_full_handle( req->handle );
2438 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2439 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2440 reply->full_handle = input->capture;
2445 /* Set the current thread caret window */
2446 DECL_HANDLER(set_caret_window)
2448 struct msg_queue *queue = get_current_queue();
2450 reply->previous = 0;
2451 if (queue && check_queue_input_window( queue, req->handle ))
2453 struct thread_input *input = queue->input;
2455 reply->previous = input->caret;
2456 reply->old_rect = input->caret_rect;
2457 reply->old_hide = input->caret_hide;
2458 reply->old_state = input->caret_state;
2460 set_caret_window( input, get_user_full_handle(req->handle) );
2461 input->caret_rect.right = input->caret_rect.left + req->width;
2462 input->caret_rect.bottom = input->caret_rect.top + req->height;
2467 /* Set the current thread caret information */
2468 DECL_HANDLER(set_caret_info)
2470 struct msg_queue *queue = get_current_queue();
2471 struct thread_input *input;
2474 input = queue->input;
2475 reply->full_handle = input->caret;
2476 reply->old_rect = input->caret_rect;
2477 reply->old_hide = input->caret_hide;
2478 reply->old_state = input->caret_state;
2480 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2482 set_error( STATUS_ACCESS_DENIED );
2485 if (req->flags & SET_CARET_POS)
2487 input->caret_rect.right += req->x - input->caret_rect.left;
2488 input->caret_rect.bottom += req->y - input->caret_rect.top;
2489 input->caret_rect.left = req->x;
2490 input->caret_rect.top = req->y;
2492 if (req->flags & SET_CARET_HIDE)
2494 input->caret_hide += req->hide;
2495 if (input->caret_hide < 0) input->caret_hide = 0;
2497 if (req->flags & SET_CARET_STATE)
2499 if (req->state == -1) input->caret_state = !input->caret_state;
2500 else input->caret_state = !!req->state;
2505 /* get the time of the last input event */
2506 DECL_HANDLER(get_last_input_time)
2508 reply->time = last_input_time;
2511 /* set/get the current cursor */
2512 DECL_HANDLER(set_cursor)
2514 struct msg_queue *queue = get_current_queue();
2515 struct thread_input *input;
2518 input = queue->input;
2520 reply->prev_handle = input->cursor;
2521 reply->prev_count = input->cursor_count;
2523 if (req->flags & SET_CURSOR_HANDLE)
2525 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
2527 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
2530 input->cursor = req->handle;
2532 if (req->flags & SET_CURSOR_COUNT)
2534 queue->cursor_count += req->show_count;
2535 input->cursor_count += req->show_count;
2537 if (req->flags & SET_CURSOR_POS)
2539 set_cursor_pos( input->desktop, req->x, req->y );
2541 if (req->flags & SET_CURSOR_CLIP)
2543 rectangle_t top_rect;
2544 get_top_window_rectangle( input->desktop, &top_rect );
2545 if (!intersect_rect( &input->desktop->cursor_clip, &top_rect, &req->clip ))
2546 input->desktop->cursor_clip = top_rect;
2549 reply->new_x = input->desktop->cursor_x;
2550 reply->new_y = input->desktop->cursor_y;
2551 reply->new_clip = input->desktop->cursor_clip;