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server: Post WM_HOTKEY when a hotkey is pressed.
[wine.git] / server / queue.c
blobce773a18c99c611f5a472a502b04db558894fc6d
1 /*
2 * Server-side message queues
3 *
4 * Copyright (C) 2000 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28
29 #include "ntstatus.h"
30 #define WIN32_NO_STATUS
31 #include "windef.h"
32 #include "winbase.h"
33 #include "wingdi.h"
34 #include "winuser.h"
35 #include "winternl.h"
36
37 #include "handle.h"
38 #include "file.h"
39 #include "thread.h"
40 #include "process.h"
41 #include "request.h"
42 #include "user.h"
43
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
46
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
49
50
51 struct message_result
52 {
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int error; /* error code to pass back to sender */
60 lparam_t result; /* reply result */
61 struct message *hardware_msg; /* hardware message if low-level hook result */
62 struct desktop *desktop; /* desktop for hardware message */
63 struct message *callback_msg; /* message to queue for callback */
64 void *data; /* message reply data */
65 unsigned int data_size; /* size of message reply data */
66 struct timeout_user *timeout; /* result timeout */
67 };
68
69 struct message
70 {
71 struct list entry; /* entry in message list */
72 enum message_type type; /* message type */
73 user_handle_t win; /* window handle */
74 unsigned int msg; /* message code */
75 lparam_t wparam; /* parameters */
76 lparam_t lparam; /* parameters */
77 unsigned int time; /* message time */
78 void *data; /* message data for sent messages */
79 unsigned int data_size; /* size of message data */
80 unsigned int unique_id; /* unique id for nested hw message waits */
81 struct message_result *result; /* result in sender queue */
82 };
83
84 struct timer
85 {
86 struct list entry; /* entry in timer list */
87 timeout_t when; /* next expiration */
88 unsigned int rate; /* timer rate in ms */
89 user_handle_t win; /* window handle */
90 unsigned int msg; /* message to post */
91 lparam_t id; /* timer id */
92 lparam_t lparam; /* lparam for message */
93 };
94
95 struct thread_input
96 {
97 struct object obj; /* object header */
98 struct desktop *desktop; /* desktop that this thread input belongs to */
99 user_handle_t focus; /* focus window */
100 user_handle_t capture; /* capture window */
101 user_handle_t active; /* active window */
102 user_handle_t menu_owner; /* current menu owner window */
103 user_handle_t move_size; /* current moving/resizing window */
104 user_handle_t caret; /* caret window */
105 rectangle_t caret_rect; /* caret rectangle */
106 int caret_hide; /* caret hide count */
107 int caret_state; /* caret on/off state */
108 user_handle_t cursor; /* current cursor */
109 int cursor_count; /* cursor show count */
110 struct list msg_list; /* list of hardware messages */
111 unsigned char keystate[256]; /* state of each key */
112 };
113
114 struct msg_queue
115 {
116 struct object obj; /* object header */
117 struct fd *fd; /* optional file descriptor to poll */
118 unsigned int wake_bits; /* wakeup bits */
119 unsigned int wake_mask; /* wakeup mask */
120 unsigned int changed_bits; /* changed wakeup bits */
121 unsigned int changed_mask; /* changed wakeup mask */
122 int paint_count; /* pending paint messages count */
123 int quit_message; /* is there a pending quit message? */
124 int exit_code; /* exit code of pending quit message */
125 int cursor_count; /* per-queue cursor show count */
126 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
127 struct list send_result; /* stack of sent messages waiting for result */
128 struct list callback_result; /* list of callback messages waiting for result */
129 struct message_result *recv_result; /* stack of received messages waiting for result */
130 struct list pending_timers; /* list of pending timers */
131 struct list expired_timers; /* list of expired timers */
132 lparam_t next_timer_id; /* id for the next timer with a 0 window */
133 struct timeout_user *timeout; /* timeout for next timer to expire */
134 struct thread_input *input; /* thread input descriptor */
135 struct hook_table *hooks; /* hook table */
136 timeout_t last_get_msg; /* time of last get message call */
137 };
138
139 struct hotkey
140 {
141 struct list entry; /* entry in desktop hotkey list */
142 struct msg_queue *queue; /* queue owning this hotkey */
143 user_handle_t win; /* window handle */
144 int id; /* hotkey id */
145 unsigned int vkey; /* virtual key code */
146 unsigned int flags; /* key modifiers */
147 };
148
149 static void msg_queue_dump( struct object *obj, int verbose );
150 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
151 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
152 static int msg_queue_signaled( struct object *obj, struct thread *thread );
153 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
154 static void msg_queue_destroy( struct object *obj );
155 static void msg_queue_poll_event( struct fd *fd, int event );
156 static void thread_input_dump( struct object *obj, int verbose );
157 static void thread_input_destroy( struct object *obj );
158 static void timer_callback( void *private );
159
160 static const struct object_ops msg_queue_ops =
161 {
162 sizeof(struct msg_queue), /* size */
163 msg_queue_dump, /* dump */
164 no_get_type, /* get_type */
165 msg_queue_add_queue, /* add_queue */
166 msg_queue_remove_queue, /* remove_queue */
167 msg_queue_signaled, /* signaled */
168 msg_queue_satisfied, /* satisfied */
169 no_signal, /* signal */
170 no_get_fd, /* get_fd */
171 no_map_access, /* map_access */
172 default_get_sd, /* get_sd */
173 default_set_sd, /* set_sd */
174 no_lookup_name, /* lookup_name */
175 no_open_file, /* open_file */
176 no_close_handle, /* close_handle */
177 msg_queue_destroy /* destroy */
178 };
179
180 static const struct fd_ops msg_queue_fd_ops =
181 {
182 NULL, /* get_poll_events */
183 msg_queue_poll_event, /* poll_event */
184 NULL, /* flush */
185 NULL, /* get_fd_type */
186 NULL, /* ioctl */
187 NULL, /* queue_async */
188 NULL, /* reselect_async */
189 NULL /* cancel async */
190 };
191
192
193 static const struct object_ops thread_input_ops =
194 {
195 sizeof(struct thread_input), /* size */
196 thread_input_dump, /* dump */
197 no_get_type, /* get_type */
198 no_add_queue, /* add_queue */
199 NULL, /* remove_queue */
200 NULL, /* signaled */
201 NULL, /* satisfied */
202 no_signal, /* signal */
203 no_get_fd, /* get_fd */
204 no_map_access, /* map_access */
205 default_get_sd, /* get_sd */
206 default_set_sd, /* set_sd */
207 no_lookup_name, /* lookup_name */
208 no_open_file, /* open_file */
209 no_close_handle, /* close_handle */
210 thread_input_destroy /* destroy */
211 };
212
213 /* pointer to input structure of foreground thread */
214 static unsigned int last_input_time;
215
216 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue );
217 static void free_message( struct message *msg );
218
219 /* set the caret window in a given thread input */
220 static void set_caret_window( struct thread_input *input, user_handle_t win )
221 {
222 if (!win || win != input->caret)
223 {
224 input->caret_rect.left = 0;
225 input->caret_rect.top = 0;
226 input->caret_rect.right = 0;
227 input->caret_rect.bottom = 0;
228 }
229 input->caret = win;
230 input->caret_hide = 1;
231 input->caret_state = 0;
232 }
233
234 /* create a thread input object */
235 static struct thread_input *create_thread_input( struct thread *thread )
236 {
237 struct thread_input *input;
238
239 if ((input = alloc_object( &thread_input_ops )))
240 {
241 input->focus = 0;
242 input->capture = 0;
243 input->active = 0;
244 input->menu_owner = 0;
245 input->move_size = 0;
246 input->cursor = 0;
247 input->cursor_count = 0;
248 list_init( &input->msg_list );
249 set_caret_window( input, 0 );
250 memset( input->keystate, 0, sizeof(input->keystate) );
251
252 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
253 {
254 release_object( input );
255 return NULL;
256 }
257 }
258 return input;
259 }
260
261 /* create a message queue object */
262 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
263 {
264 struct thread_input *new_input = NULL;
265 struct msg_queue *queue;
266 int i;
267
268 if (!input)
269 {
270 if (!(new_input = create_thread_input( thread ))) return NULL;
271 input = new_input;
272 }
273
274 if ((queue = alloc_object( &msg_queue_ops )))
275 {
276 queue->fd = NULL;
277 queue->wake_bits = 0;
278 queue->wake_mask = 0;
279 queue->changed_bits = 0;
280 queue->changed_mask = 0;
281 queue->paint_count = 0;
282 queue->quit_message = 0;
283 queue->cursor_count = 0;
284 queue->recv_result = NULL;
285 queue->next_timer_id = 0x7fff;
286 queue->timeout = NULL;
287 queue->input = (struct thread_input *)grab_object( input );
288 queue->hooks = NULL;
289 queue->last_get_msg = current_time;
290 list_init( &queue->send_result );
291 list_init( &queue->callback_result );
292 list_init( &queue->pending_timers );
293 list_init( &queue->expired_timers );
294 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
295
296 thread->queue = queue;
297 }
298 if (new_input) release_object( new_input );
299 return queue;
300 }
301
302 /* free the message queue of a thread at thread exit */
303 void free_msg_queue( struct thread *thread )
304 {
305 remove_thread_hooks( thread );
306 if (!thread->queue) return;
307 release_object( thread->queue );
308 thread->queue = NULL;
309 }
310
311 /* change the thread input data of a given thread */
312 static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
313 {
314 struct msg_queue *queue = thread->queue;
315
316 if (!queue)
317 {
318 thread->queue = create_msg_queue( thread, new_input );
319 return thread->queue != NULL;
320 }
321 if (queue->input)
322 {
323 queue->input->cursor_count -= queue->cursor_count;
324 release_object( queue->input );
325 }
326 queue->input = (struct thread_input *)grab_object( new_input );
327 new_input->cursor_count += queue->cursor_count;
328 return 1;
329 }
330
331 /* set the cursor position and queue the corresponding mouse message */
332 static void set_cursor_pos( struct desktop *desktop, int x, int y )
333 {
334 struct hardware_msg_data *msg_data;
335 struct message *msg;
336
337 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
338 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
339 {
340 free( msg );
341 return;
342 }
343 memset( msg_data, 0, sizeof(*msg_data) );
344
345 msg->type = MSG_HARDWARE;
346 msg->win = 0;
347 msg->msg = WM_MOUSEMOVE;
348 msg->wparam = 0;
349 msg->lparam = 0;
350 msg->time = get_tick_count();
351 msg->result = NULL;
352 msg->data = msg_data;
353 msg->data_size = sizeof(*msg_data);
354 msg_data->x = x;
355 msg_data->y = y;
356 queue_hardware_message( desktop, msg, 1 );
357 }
358
359 /* set the cursor clip rectangle */
360 static void set_clip_rectangle( struct desktop *desktop, const rectangle_t *rect )
361 {
362 rectangle_t top_rect, new_rect;
363 int x, y;
364
365 get_top_window_rectangle( desktop, &top_rect );
366 if (!rect || !intersect_rect( &new_rect, &top_rect, rect )) new_rect = top_rect;
367 desktop->cursor.clip = new_rect;
368 if (desktop->cursor.clip_msg)
369 post_desktop_message( desktop, desktop->cursor.clip_msg, rect != NULL, 0 );
370
371 /* warp the mouse to be inside the clip rect */
372 x = min( max( desktop->cursor.x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
373 y = min( max( desktop->cursor.y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
374 if (x != desktop->cursor.x || y != desktop->cursor.y) set_cursor_pos( desktop, x, y );
375 }
376
377 /* change the foreground input and reset the cursor clip rect */
378 static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
379 {
380 if (desktop->foreground_input == input) return;
381 set_clip_rectangle( desktop, NULL );
382 desktop->foreground_input = input;
383 }
384
385 /* get the hook table for a given thread */
386 struct hook_table *get_queue_hooks( struct thread *thread )
387 {
388 if (!thread->queue) return NULL;
389 return thread->queue->hooks;
390 }
391
392 /* set the hook table for a given thread, allocating the queue if needed */
393 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
394 {
395 struct msg_queue *queue = thread->queue;
396 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
397 if (queue->hooks) release_object( queue->hooks );
398 queue->hooks = hooks;
399 }
400
401 /* check the queue status */
402 static inline int is_signaled( struct msg_queue *queue )
403 {
404 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
405 }
406
407 /* set some queue bits */
408 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
409 {
410 queue->wake_bits |= bits;
411 queue->changed_bits |= bits;
412 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
413 }
414
415 /* clear some queue bits */
416 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
417 {
418 queue->wake_bits &= ~bits;
419 queue->changed_bits &= ~bits;
420 }
421
422 /* check whether msg is a keyboard message */
423 static inline int is_keyboard_msg( struct message *msg )
424 {
425 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
426 }
427
428 /* check if message is matched by the filter */
429 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
430 {
431 return (msg >= first && msg <= last);
432 }
433
434 /* check whether a message filter contains at least one potential hardware message */
435 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
436 {
437 /* hardware message ranges are (in numerical order):
438 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
439 * WM_KEYFIRST .. WM_KEYLAST
440 * WM_MOUSEFIRST .. WM_MOUSELAST
441 */
442 if (last < WM_NCMOUSEFIRST) return 0;
443 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
444 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
445 if (first > WM_MOUSELAST) return 0;
446 return 1;
447 }
448
449 /* get the QS_* bit corresponding to a given hardware message */
450 static inline int get_hardware_msg_bit( struct message *msg )
451 {
452 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
453 if (is_keyboard_msg( msg )) return QS_KEY;
454 return QS_MOUSEBUTTON;
455 }
456
457 /* get the current thread queue, creating it if needed */
458 static inline struct msg_queue *get_current_queue(void)
459 {
460 struct msg_queue *queue = current->queue;
461 if (!queue) queue = create_msg_queue( current, NULL );
462 return queue;
463 }
464
465 /* get a (pseudo-)unique id to tag hardware messages */
466 static inline unsigned int get_unique_id(void)
467 {
468 static unsigned int id;
469 if (!++id) id = 1; /* avoid an id of 0 */
470 return id;
471 }
472
473 /* try to merge a message with the last in the list; return 1 if successful */
474 static int merge_message( struct thread_input *input, const struct message *msg )
475 {
476 struct message *prev;
477 struct list *ptr;
478
479 if (msg->msg != WM_MOUSEMOVE) return 0;
480 if (!(ptr = list_tail( &input->msg_list ))) return 0;
481 prev = LIST_ENTRY( ptr, struct message, entry );
482 if (prev->result) return 0;
483 if (prev->win && msg->win && prev->win != msg->win) return 0;
484 if (prev->msg != msg->msg) return 0;
485 if (prev->type != msg->type) return 0;
486 /* now we can merge it */
487 prev->wparam = msg->wparam;
488 prev->lparam = msg->lparam;
489 prev->time = msg->time;
490 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
491 {
492 struct hardware_msg_data *prev_data = prev->data;
493 struct hardware_msg_data *msg_data = msg->data;
494 prev_data->x = msg_data->x;
495 prev_data->y = msg_data->y;
496 prev_data->info = msg_data->info;
497 }
498 return 1;
499 }
500
501 /* free a result structure */
502 static void free_result( struct message_result *result )
503 {
504 if (result->timeout) remove_timeout_user( result->timeout );
505 free( result->data );
506 if (result->callback_msg) free_message( result->callback_msg );
507 if (result->hardware_msg) free_message( result->hardware_msg );
508 if (result->desktop) release_object( result->desktop );
509 free( result );
510 }
511
512 /* remove the result from the sender list it is on */
513 static inline void remove_result_from_sender( struct message_result *result )
514 {
515 assert( result->sender );
516
517 list_remove( &result->sender_entry );
518 result->sender = NULL;
519 if (!result->receiver) free_result( result );
520 }
521
522 /* store the message result in the appropriate structure */
523 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
524 {
525 res->result = result;
526 res->error = error;
527 res->replied = 1;
528 if (res->timeout)
529 {
530 remove_timeout_user( res->timeout );
531 res->timeout = NULL;
532 }
533
534 if (res->hardware_msg)
535 {
536 if (!error && result) /* rejected by the hook */
537 free_message( res->hardware_msg );
538 else
539 queue_hardware_message( res->desktop, res->hardware_msg, 0 );
540
541 res->hardware_msg = NULL;
542 }
543
544 if (res->sender)
545 {
546 if (res->callback_msg)
547 {
548 /* queue the callback message in the sender queue */
549 struct callback_msg_data *data = res->callback_msg->data;
550 data->result = result;
551 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
552 set_queue_bits( res->sender, QS_SENDMESSAGE );
553 res->callback_msg = NULL;
554 remove_result_from_sender( res );
555 }
556 else
557 {
558 /* wake sender queue if waiting on this result */
559 if (list_head(&res->sender->send_result) == &res->sender_entry)
560 set_queue_bits( res->sender, QS_SMRESULT );
561 }
562 }
563 else if (!res->receiver) free_result( res );
564 }
565
566 /* free a message when deleting a queue or window */
567 static void free_message( struct message *msg )
568 {
569 struct message_result *result = msg->result;
570 if (result)
571 {
572 result->msg = NULL;
573 result->receiver = NULL;
574 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
575 }
576 free( msg->data );
577 free( msg );
578 }
579
580 /* remove (and free) a message from a message list */
581 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
582 enum message_kind kind )
583 {
584 list_remove( &msg->entry );
585 switch(kind)
586 {
587 case SEND_MESSAGE:
588 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
589 break;
590 case POST_MESSAGE:
591 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
592 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
593 break;
594 }
595 free_message( msg );
596 }
597
598 /* message timed out without getting a reply */
599 static void result_timeout( void *private )
600 {
601 struct message_result *result = private;
602
603 assert( !result->replied );
604
605 result->timeout = NULL;
606
607 if (result->msg) /* not received yet */
608 {
609 struct message *msg = result->msg;
610
611 result->msg = NULL;
612 msg->result = NULL;
613 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
614 result->receiver = NULL;
615 }
616 store_message_result( result, 0, STATUS_TIMEOUT );
617 }
618
619 /* allocate and fill a message result structure */
620 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
621 struct msg_queue *recv_queue,
622 struct message *msg, timeout_t timeout )
623 {
624 struct message_result *result = mem_alloc( sizeof(*result) );
625 if (result)
626 {
627 result->msg = msg;
628 result->sender = send_queue;
629 result->receiver = recv_queue;
630 result->replied = 0;
631 result->data = NULL;
632 result->data_size = 0;
633 result->timeout = NULL;
634 result->hardware_msg = NULL;
635 result->desktop = NULL;
636 result->callback_msg = NULL;
637
638 if (msg->type == MSG_CALLBACK)
639 {
640 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
641
642 if (!callback_msg)
643 {
644 free( result );
645 return NULL;
646 }
647 callback_msg->type = MSG_CALLBACK_RESULT;
648 callback_msg->win = msg->win;
649 callback_msg->msg = msg->msg;
650 callback_msg->wparam = 0;
651 callback_msg->lparam = 0;
652 callback_msg->time = get_tick_count();
653 callback_msg->result = NULL;
654 /* steal the data from the original message */
655 callback_msg->data = msg->data;
656 callback_msg->data_size = msg->data_size;
657 msg->data = NULL;
658 msg->data_size = 0;
659
660 result->callback_msg = callback_msg;
661 list_add_head( &send_queue->callback_result, &result->sender_entry );
662 }
663 else if (send_queue) list_add_head( &send_queue->send_result, &result->sender_entry );
664
665 if (timeout != TIMEOUT_INFINITE)
666 result->timeout = add_timeout_user( timeout, result_timeout, result );
667 }
668 return result;
669 }
670
671 /* receive a message, removing it from the sent queue */
672 static void receive_message( struct msg_queue *queue, struct message *msg,
673 struct get_message_reply *reply )
674 {
675 struct message_result *result = msg->result;
676
677 reply->total = msg->data_size;
678 if (msg->data_size > get_reply_max_size())
679 {
680 set_error( STATUS_BUFFER_OVERFLOW );
681 return;
682 }
683 reply->type = msg->type;
684 reply->win = msg->win;
685 reply->msg = msg->msg;
686 reply->wparam = msg->wparam;
687 reply->lparam = msg->lparam;
688 reply->time = msg->time;
689
690 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
691
692 list_remove( &msg->entry );
693 /* put the result on the receiver result stack */
694 if (result)
695 {
696 result->msg = NULL;
697 result->recv_next = queue->recv_result;
698 queue->recv_result = result;
699 }
700 free( msg );
701 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
702 }
703
704 /* set the result of the current received message */
705 static void reply_message( struct msg_queue *queue, lparam_t result,
706 unsigned int error, int remove, const void *data, data_size_t len )
707 {
708 struct message_result *res = queue->recv_result;
709
710 if (remove)
711 {
712 queue->recv_result = res->recv_next;
713 res->receiver = NULL;
714 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
715 {
716 free_result( res );
717 return;
718 }
719 }
720 if (!res->replied)
721 {
722 if (len && (res->data = memdup( data, len ))) res->data_size = len;
723 store_message_result( res, result, error );
724 }
725 }
726
727 static int match_window( user_handle_t win, user_handle_t msg_win )
728 {
729 if (!win) return 1;
730 if (win == -1 || win == 1) return !msg_win;
731 if (msg_win == win) return 1;
732 return is_child_window( win, msg_win );
733 }
734
735 /* retrieve a posted message */
736 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
737 unsigned int first, unsigned int last, unsigned int flags,
738 struct get_message_reply *reply )
739 {
740 struct message *msg;
741
742 /* check against the filters */
743 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
744 {
745 if (!match_window( win, msg->win )) continue;
746 if (!check_msg_filter( msg->msg, first, last )) continue;
747 goto found; /* found one */
748 }
749 return 0;
750
751 /* return it to the app */
752 found:
753 reply->total = msg->data_size;
754 if (msg->data_size > get_reply_max_size())
755 {
756 set_error( STATUS_BUFFER_OVERFLOW );
757 return 1;
758 }
759 reply->type = msg->type;
760 reply->win = msg->win;
761 reply->msg = msg->msg;
762 reply->wparam = msg->wparam;
763 reply->lparam = msg->lparam;
764 reply->time = msg->time;
765
766 if (flags & PM_REMOVE)
767 {
768 if (msg->data)
769 {
770 set_reply_data_ptr( msg->data, msg->data_size );
771 msg->data = NULL;
772 msg->data_size = 0;
773 }
774 remove_queue_message( queue, msg, POST_MESSAGE );
775 }
776 else if (msg->data) set_reply_data( msg->data, msg->data_size );
777
778 return 1;
779 }
780
781 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
782 struct get_message_reply *reply )
783 {
784 if (queue->quit_message)
785 {
786 reply->total = 0;
787 reply->type = MSG_POSTED;
788 reply->win = 0;
789 reply->msg = WM_QUIT;
790 reply->wparam = queue->exit_code;
791 reply->lparam = 0;
792 reply->time = get_tick_count();
793
794 if (flags & PM_REMOVE)
795 {
796 queue->quit_message = 0;
797 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
798 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
799 }
800 return 1;
801 }
802 else
803 return 0;
804 }
805
806 /* empty a message list and free all the messages */
807 static void empty_msg_list( struct list *list )
808 {
809 struct list *ptr;
810
811 while ((ptr = list_head( list )) != NULL)
812 {
813 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
814 list_remove( &msg->entry );
815 free_message( msg );
816 }
817 }
818
819 /* cleanup all pending results when deleting a queue */
820 static void cleanup_results( struct msg_queue *queue )
821 {
822 struct list *entry;
823
824 while ((entry = list_head( &queue->send_result )) != NULL)
825 {
826 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
827 }
828
829 while ((entry = list_head( &queue->callback_result )) != NULL)
830 {
831 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
832 }
833
834 while (queue->recv_result)
835 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
836 }
837
838 /* check if the thread owning the queue is hung (not checking for messages) */
839 static int is_queue_hung( struct msg_queue *queue )
840 {
841 struct wait_queue_entry *entry;
842
843 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
844 return 0; /* less than 5 seconds since last get message -> not hung */
845
846 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
847 {
848 if (entry->thread->queue == queue)
849 return 0; /* thread is waiting on queue -> not hung */
850 }
851 return 1;
852 }
853
854 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
855 {
856 struct msg_queue *queue = (struct msg_queue *)obj;
857 struct process *process = entry->thread->process;
858
859 /* a thread can only wait on its own queue */
860 if (entry->thread->queue != queue)
861 {
862 set_error( STATUS_ACCESS_DENIED );
863 return 0;
864 }
865 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
866
867 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
868 set_fd_events( queue->fd, POLLIN );
869 add_queue( obj, entry );
870 return 1;
871 }
872
873 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
874 {
875 struct msg_queue *queue = (struct msg_queue *)obj;
876
877 remove_queue( obj, entry );
878 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
879 set_fd_events( queue->fd, 0 );
880 }
881
882 static void msg_queue_dump( struct object *obj, int verbose )
883 {
884 struct msg_queue *queue = (struct msg_queue *)obj;
885 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
886 queue->wake_bits, queue->wake_mask );
887 }
888
889 static int msg_queue_signaled( struct object *obj, struct thread *thread )
890 {
891 struct msg_queue *queue = (struct msg_queue *)obj;
892 int ret = 0;
893
894 if (queue->fd)
895 {
896 if ((ret = check_fd_events( queue->fd, POLLIN )))
897 /* stop waiting on select() if we are signaled */
898 set_fd_events( queue->fd, 0 );
899 else if (!list_empty( &obj->wait_queue ))
900 /* restart waiting on poll() if we are no longer signaled */
901 set_fd_events( queue->fd, POLLIN );
902 }
903 return ret || is_signaled( queue );
904 }
905
906 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
907 {
908 struct msg_queue *queue = (struct msg_queue *)obj;
909 queue->wake_mask = 0;
910 queue->changed_mask = 0;
911 return 0; /* Not abandoned */
912 }
913
914 static void msg_queue_destroy( struct object *obj )
915 {
916 struct msg_queue *queue = (struct msg_queue *)obj;
917 struct list *ptr;
918 struct hotkey *hotkey, *hotkey2;
919 int i;
920
921 cleanup_results( queue );
922 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
923
924 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &queue->input->desktop->hotkeys, struct hotkey, entry )
925 {
926 if (hotkey->queue == queue)
927 {
928 list_remove( &hotkey->entry );
929 free( hotkey );
930 }
931 }
932
933 while ((ptr = list_head( &queue->pending_timers )))
934 {
935 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
936 list_remove( &timer->entry );
937 free( timer );
938 }
939 while ((ptr = list_head( &queue->expired_timers )))
940 {
941 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
942 list_remove( &timer->entry );
943 free( timer );
944 }
945 if (queue->timeout) remove_timeout_user( queue->timeout );
946 if (queue->input)
947 {
948 queue->input->cursor_count -= queue->cursor_count;
949 release_object( queue->input );
950 }
951 if (queue->hooks) release_object( queue->hooks );
952 if (queue->fd) release_object( queue->fd );
953 }
954
955 static void msg_queue_poll_event( struct fd *fd, int event )
956 {
957 struct msg_queue *queue = get_fd_user( fd );
958 assert( queue->obj.ops == &msg_queue_ops );
959
960 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
961 else set_fd_events( queue->fd, 0 );
962 wake_up( &queue->obj, 0 );
963 }
964
965 static void thread_input_dump( struct object *obj, int verbose )
966 {
967 struct thread_input *input = (struct thread_input *)obj;
968 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
969 input->focus, input->capture, input->active );
970 }
971
972 static void thread_input_destroy( struct object *obj )
973 {
974 struct thread_input *input = (struct thread_input *)obj;
975
976 empty_msg_list( &input->msg_list );
977 if (input->desktop)
978 {
979 if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
980 release_object( input->desktop );
981 }
982 }
983
984 /* fix the thread input data when a window is destroyed */
985 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
986 {
987 struct thread_input *input = queue->input;
988
989 if (window == input->focus) input->focus = 0;
990 if (window == input->capture) input->capture = 0;
991 if (window == input->active) input->active = 0;
992 if (window == input->menu_owner) input->menu_owner = 0;
993 if (window == input->move_size) input->move_size = 0;
994 if (window == input->caret) set_caret_window( input, 0 );
995 }
996
997 /* check if the specified window can be set in the input data of a given queue */
998 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
999 {
1000 struct thread *thread;
1001 int ret = 0;
1002
1003 if (!window) return 1; /* we can always clear the data */
1004
1005 if ((thread = get_window_thread( window )))
1006 {
1007 ret = (queue->input == thread->queue->input);
1008 if (!ret) set_error( STATUS_ACCESS_DENIED );
1009 release_object( thread );
1010 }
1011 else set_error( STATUS_INVALID_HANDLE );
1012
1013 return ret;
1014 }
1015
1016 /* make sure the specified thread has a queue */
1017 int init_thread_queue( struct thread *thread )
1018 {
1019 if (thread->queue) return 1;
1020 return (create_msg_queue( thread, NULL ) != NULL);
1021 }
1022
1023 /* attach two thread input data structures */
1024 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
1025 {
1026 struct desktop *desktop;
1027 struct thread_input *input;
1028 int ret;
1029
1030 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
1031 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
1032 input = (struct thread_input *)grab_object( thread_to->queue->input );
1033 if (input->desktop != desktop)
1034 {
1035 set_error( STATUS_ACCESS_DENIED );
1036 release_object( input );
1037 release_object( desktop );
1038 return 0;
1039 }
1040 release_object( desktop );
1041
1042 ret = assign_thread_input( thread_from, input );
1043 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
1044 release_object( input );
1045 return ret;
1046 }
1047
1048 /* detach two thread input data structures */
1049 void detach_thread_input( struct thread *thread_from )
1050 {
1051 struct thread_input *input;
1052
1053 if ((input = create_thread_input( thread_from )))
1054 {
1055 assign_thread_input( thread_from, input );
1056 release_object( input );
1057 }
1058 }
1059
1060
1061 /* set the next timer to expire */
1062 static void set_next_timer( struct msg_queue *queue )
1063 {
1064 struct list *ptr;
1065
1066 if (queue->timeout)
1067 {
1068 remove_timeout_user( queue->timeout );
1069 queue->timeout = NULL;
1070 }
1071 if ((ptr = list_head( &queue->pending_timers )))
1072 {
1073 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1074 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1075 }
1076 /* set/clear QS_TIMER bit */
1077 if (list_empty( &queue->expired_timers ))
1078 clear_queue_bits( queue, QS_TIMER );
1079 else
1080 set_queue_bits( queue, QS_TIMER );
1081 }
1082
1083 /* find a timer from its window and id */
1084 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1085 unsigned int msg, lparam_t id )
1086 {
1087 struct list *ptr;
1088
1089 /* we need to search both lists */
1090
1091 LIST_FOR_EACH( ptr, &queue->pending_timers )
1092 {
1093 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1094 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1095 }
1096 LIST_FOR_EACH( ptr, &queue->expired_timers )
1097 {
1098 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1099 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1100 }
1101 return NULL;
1102 }
1103
1104 /* callback for the next timer expiration */
1105 static void timer_callback( void *private )
1106 {
1107 struct msg_queue *queue = private;
1108 struct list *ptr;
1109
1110 queue->timeout = NULL;
1111 /* move on to the next timer */
1112 ptr = list_head( &queue->pending_timers );
1113 list_remove( ptr );
1114 list_add_tail( &queue->expired_timers, ptr );
1115 set_next_timer( queue );
1116 }
1117
1118 /* link a timer at its rightful place in the queue list */
1119 static void link_timer( struct msg_queue *queue, struct timer *timer )
1120 {
1121 struct list *ptr;
1122
1123 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1124 {
1125 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1126 if (t->when >= timer->when) break;
1127 }
1128 list_add_before( ptr, &timer->entry );
1129 }
1130
1131 /* remove a timer from the queue timer list and free it */
1132 static void free_timer( struct msg_queue *queue, struct timer *timer )
1133 {
1134 list_remove( &timer->entry );
1135 free( timer );
1136 set_next_timer( queue );
1137 }
1138
1139 /* restart an expired timer */
1140 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1141 {
1142 list_remove( &timer->entry );
1143 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1144 link_timer( queue, timer );
1145 set_next_timer( queue );
1146 }
1147
1148 /* find an expired timer matching the filtering parameters */
1149 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1150 unsigned int get_first, unsigned int get_last,
1151 int remove )
1152 {
1153 struct list *ptr;
1154
1155 LIST_FOR_EACH( ptr, &queue->expired_timers )
1156 {
1157 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1158 if (win && timer->win != win) continue;
1159 if (check_msg_filter( timer->msg, get_first, get_last ))
1160 {
1161 if (remove) restart_timer( queue, timer );
1162 return timer;
1163 }
1164 }
1165 return NULL;
1166 }
1167
1168 /* add a timer */
1169 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1170 {
1171 struct timer *timer = mem_alloc( sizeof(*timer) );
1172 if (timer)
1173 {
1174 timer->rate = max( rate, 1 );
1175 timer->when = current_time + (timeout_t)timer->rate * 10000;
1176 link_timer( queue, timer );
1177 /* check if we replaced the next timer */
1178 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1179 }
1180 return timer;
1181 }
1182
1183 /* change the input key state for a given key */
1184 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1185 {
1186 if (down)
1187 {
1188 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1189 keystate[key] |= down;
1190 }
1191 else keystate[key] &= ~0x80;
1192 }
1193
1194 /* update the input key state for a keyboard message */
1195 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1196 const struct message *msg )
1197 {
1198 unsigned char key;
1199 int down = 0;
1200
1201 switch (msg->msg)
1202 {
1203 case WM_LBUTTONDOWN:
1204 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1205 /* fall through */
1206 case WM_LBUTTONUP:
1207 set_input_key_state( keystate, VK_LBUTTON, down );
1208 break;
1209 case WM_MBUTTONDOWN:
1210 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1211 /* fall through */
1212 case WM_MBUTTONUP:
1213 set_input_key_state( keystate, VK_MBUTTON, down );
1214 break;
1215 case WM_RBUTTONDOWN:
1216 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1217 /* fall through */
1218 case WM_RBUTTONUP:
1219 set_input_key_state( keystate, VK_RBUTTON, down );
1220 break;
1221 case WM_XBUTTONDOWN:
1222 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1223 /* fall through */
1224 case WM_XBUTTONUP:
1225 if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1226 else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1227 break;
1228 case WM_KEYDOWN:
1229 case WM_SYSKEYDOWN:
1230 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1231 /* fall through */
1232 case WM_KEYUP:
1233 case WM_SYSKEYUP:
1234 key = (unsigned char)msg->wparam;
1235 set_input_key_state( keystate, key, down );
1236 switch(key)
1237 {
1238 case VK_LCONTROL:
1239 case VK_RCONTROL:
1240 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1241 set_input_key_state( keystate, VK_CONTROL, down );
1242 break;
1243 case VK_LMENU:
1244 case VK_RMENU:
1245 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1246 set_input_key_state( keystate, VK_MENU, down );
1247 break;
1248 case VK_LSHIFT:
1249 case VK_RSHIFT:
1250 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1251 set_input_key_state( keystate, VK_SHIFT, down );
1252 break;
1253 }
1254 break;
1255 }
1256 }
1257
1258 /* release the hardware message currently being processed by the given thread */
1259 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1260 int remove, user_handle_t new_win )
1261 {
1262 struct thread_input *input = queue->input;
1263 struct message *msg;
1264
1265 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1266 {
1267 if (msg->unique_id == hw_id) break;
1268 }
1269 if (&msg->entry == &input->msg_list) return; /* not found */
1270
1271 /* clear the queue bit for that message */
1272 if (remove || new_win)
1273 {
1274 struct message *other;
1275 int clr_bit;
1276
1277 clr_bit = get_hardware_msg_bit( msg );
1278 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1279 {
1280 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1281 {
1282 clr_bit = 0;
1283 break;
1284 }
1285 }
1286 if (clr_bit) clear_queue_bits( queue, clr_bit );
1287 }
1288
1289 if (new_win) /* set the new window */
1290 {
1291 struct thread *owner = get_window_thread( new_win );
1292 if (owner)
1293 {
1294 msg->win = new_win;
1295 if (owner->queue->input != input)
1296 {
1297 list_remove( &msg->entry );
1298 if (merge_message( owner->queue->input, msg ))
1299 {
1300 free_message( msg );
1301 release_object( owner );
1302 return;
1303 }
1304 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1305 }
1306 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1307 remove = 0;
1308 release_object( owner );
1309 }
1310 }
1311 if (remove)
1312 {
1313 update_input_key_state( input->desktop, input->keystate, msg );
1314 list_remove( &msg->entry );
1315 free_message( msg );
1316 }
1317 }
1318
1319 static int queue_hotkey_message( struct desktop *desktop, struct message *msg )
1320 {
1321 struct hotkey *hotkey;
1322 unsigned int modifiers = 0;
1323
1324 if (msg->msg != WM_KEYDOWN) return 0;
1325
1326 if (desktop->keystate[VK_MENU] & 0x80) modifiers |= MOD_ALT;
1327 if (desktop->keystate[VK_CONTROL] & 0x80) modifiers |= MOD_CONTROL;
1328 if (desktop->keystate[VK_SHIFT] & 0x80) modifiers |= MOD_SHIFT;
1329 if ((desktop->keystate[VK_LWIN] & 0x80) || (desktop->keystate[VK_RWIN] & 0x80)) modifiers |= MOD_WIN;
1330
1331 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
1332 {
1333 if (hotkey->vkey != msg->wparam) continue;
1334 if ((hotkey->flags & (MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN)) == modifiers) goto found;
1335 }
1336
1337 return 0;
1338
1339 found:
1340 msg->type = MSG_POSTED;
1341 msg->win = hotkey->win;
1342 msg->msg = WM_HOTKEY;
1343 msg->wparam = hotkey->id;
1344 msg->lparam = ((hotkey->vkey & 0xffff) << 16) | modifiers;
1345
1346 free( msg->data );
1347 msg->data = NULL;
1348 msg->data_size = 0;
1349
1350 list_add_tail( &hotkey->queue->msg_list[POST_MESSAGE], &msg->entry );
1351 set_queue_bits( hotkey->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1352 return 1;
1353 }
1354
1355 /* find the window that should receive a given hardware message */
1356 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1357 struct message *msg, unsigned int *msg_code )
1358 {
1359 struct hardware_msg_data *data = msg->data;
1360 user_handle_t win = 0;
1361
1362 *msg_code = msg->msg;
1363 if (is_keyboard_msg( msg ))
1364 {
1365 if (input && !(win = input->focus))
1366 {
1367 win = input->active;
1368 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1369 }
1370 }
1371 else /* mouse message */
1372 {
1373 if (!input || !(win = input->capture))
1374 {
1375 if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
1376 win = window_from_point( desktop, data->x, data->y );
1377 }
1378 }
1379 return win;
1380 }
1381
1382 /* queue a hardware message into a given thread input */
1383 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue )
1384 {
1385 user_handle_t win;
1386 struct thread *thread;
1387 struct thread_input *input;
1388 unsigned int msg_code;
1389 struct hardware_msg_data *data = msg->data;
1390
1391 update_input_key_state( desktop, desktop->keystate, msg );
1392 last_input_time = get_tick_count();
1393 if (msg->msg != WM_MOUSEMOVE) always_queue = 1;
1394
1395 if (is_keyboard_msg( msg ))
1396 {
1397 if (queue_hotkey_message( desktop, msg )) return;
1398 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1399 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1400 msg->lparam &= ~(KF_EXTENDED << 16);
1401 }
1402 else
1403 {
1404 if (msg->msg == WM_MOUSEMOVE)
1405 {
1406 int x = min( max( data->x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
1407 int y = min( max( data->y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
1408 if (desktop->cursor.x != x || desktop->cursor.y != y) always_queue = 1;
1409 desktop->cursor.x = x;
1410 desktop->cursor.y = y;
1411 desktop->cursor.last_change = get_tick_count();
1412 }
1413 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1414 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1415 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1416 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1417 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1418 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1419 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1420 }
1421 data->x = desktop->cursor.x;
1422 data->y = desktop->cursor.y;
1423
1424 if (msg->win && (thread = get_window_thread( msg->win )))
1425 {
1426 input = thread->queue->input;
1427 release_object( thread );
1428 }
1429 else input = desktop->foreground_input;
1430
1431 win = find_hardware_message_window( desktop, input, msg, &msg_code );
1432 if (!win || !(thread = get_window_thread(win)))
1433 {
1434 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1435 free_message( msg );
1436 return;
1437 }
1438 input = thread->queue->input;
1439
1440 if (win != desktop->cursor.win) always_queue = 1;
1441 desktop->cursor.win = win;
1442
1443 if (!always_queue || merge_message( input, msg )) free_message( msg );
1444 else
1445 {
1446 msg->unique_id = 0; /* will be set once we return it to the app */
1447 list_add_tail( &input->msg_list, &msg->entry );
1448 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1449 }
1450 release_object( thread );
1451 }
1452
1453 /* send the low-level hook message for a given hardware message */
1454 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1455 const hw_input_t *input, struct msg_queue *sender )
1456 {
1457 struct thread *hook_thread;
1458 struct msg_queue *queue;
1459 struct message *msg;
1460 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1461 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1462
1463 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1464 if (!(queue = hook_thread->queue)) return 0;
1465 if (is_queue_hung( queue )) return 0;
1466
1467 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1468
1469 msg->type = MSG_HOOK_LL;
1470 msg->win = 0;
1471 msg->msg = id;
1472 msg->wparam = hardware_msg->msg;
1473 msg->time = hardware_msg->time;
1474 msg->data_size = hardware_msg->data_size;
1475 msg->result = NULL;
1476
1477 if (input->type == INPUT_KEYBOARD)
1478 {
1479 unsigned short vkey = input->kbd.vkey;
1480 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1481 msg->lparam = (input->kbd.scan << 16) | vkey;
1482 }
1483 else msg->lparam = input->mouse.data << 16;
1484
1485 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1486 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1487 {
1488 free_message( msg );
1489 return 0;
1490 }
1491 msg->result->hardware_msg = hardware_msg;
1492 msg->result->desktop = (struct desktop *)grab_object( desktop );
1493 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1494 set_queue_bits( queue, QS_SENDMESSAGE );
1495 return 1;
1496 }
1497
1498 /* queue a hardware message for a mouse event */
1499 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1500 unsigned int hook_flags, struct msg_queue *sender )
1501 {
1502 struct hardware_msg_data *msg_data;
1503 struct message *msg;
1504 unsigned int i, time, flags;
1505 int wait = 0, x, y;
1506
1507 static const unsigned int messages[] =
1508 {
1509 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1510 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1511 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1512 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1513 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1514 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1515 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1516 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1517 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1518 0, /* 0x0200 = unused */
1519 0, /* 0x0400 = unused */
1520 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1521 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1522 };
1523
1524 desktop->cursor.last_change = get_tick_count();
1525 flags = input->mouse.flags;
1526 time = input->mouse.time;
1527 if (!time) time = desktop->cursor.last_change;
1528
1529 if (flags & MOUSEEVENTF_MOVE)
1530 {
1531 if (flags & MOUSEEVENTF_ABSOLUTE)
1532 {
1533 x = input->mouse.x;
1534 y = input->mouse.y;
1535 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1536 x == desktop->cursor.x && y == desktop->cursor.y)
1537 flags &= ~MOUSEEVENTF_MOVE;
1538 }
1539 else
1540 {
1541 x = desktop->cursor.x + input->mouse.x;
1542 y = desktop->cursor.y + input->mouse.y;
1543 }
1544 }
1545 else
1546 {
1547 x = desktop->cursor.x;
1548 y = desktop->cursor.y;
1549 }
1550
1551 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1552 {
1553 if (!messages[i]) continue;
1554 if (!(flags & (1 << i))) continue;
1555 flags &= ~(1 << i);
1556
1557 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1558 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1559 {
1560 free( msg );
1561 return 0;
1562 }
1563 memset( msg_data, 0, sizeof(*msg_data) );
1564
1565 msg->type = MSG_HARDWARE;
1566 msg->win = get_user_full_handle( win );
1567 msg->msg = messages[i];
1568 msg->wparam = input->mouse.data << 16;
1569 msg->lparam = 0;
1570 msg->time = time;
1571 msg->result = NULL;
1572 msg->data = msg_data;
1573 msg->data_size = sizeof(*msg_data);
1574 msg_data->x = x;
1575 msg_data->y = y;
1576 msg_data->info = input->mouse.info;
1577 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
1578
1579 /* specify a sender only when sending the last message */
1580 if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
1581 {
1582 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1583 queue_hardware_message( desktop, msg, 0 );
1584 }
1585 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1586 queue_hardware_message( desktop, msg, 0 );
1587 }
1588 return wait;
1589 }
1590
1591 /* queue a hardware message for a keyboard event */
1592 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1593 unsigned int hook_flags, struct msg_queue *sender )
1594 {
1595 struct hardware_msg_data *msg_data;
1596 struct message *msg;
1597 unsigned char vkey = input->kbd.vkey;
1598 int wait;
1599
1600 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1601 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1602 {
1603 free( msg );
1604 return 0;
1605 }
1606 memset( msg_data, 0, sizeof(*msg_data) );
1607
1608 msg->type = MSG_HARDWARE;
1609 msg->win = get_user_full_handle( win );
1610 msg->lparam = (input->kbd.scan << 16) | 1; /* repeat count */
1611 msg->time = input->kbd.time;
1612 msg->result = NULL;
1613 msg->data = msg_data;
1614 msg->data_size = sizeof(*msg_data);
1615 msg_data->info = input->kbd.info;
1616 if (!msg->time) msg->time = get_tick_count();
1617 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
1618
1619 if (input->kbd.flags & KEYEVENTF_UNICODE)
1620 {
1621 msg->wparam = VK_PACKET;
1622 }
1623 else
1624 {
1625 unsigned int flags = 0;
1626 switch (vkey)
1627 {
1628 case VK_MENU:
1629 case VK_LMENU:
1630 case VK_RMENU:
1631 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1632 break;
1633 case VK_CONTROL:
1634 case VK_LCONTROL:
1635 case VK_RCONTROL:
1636 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1637 break;
1638 case VK_SHIFT:
1639 case VK_LSHIFT:
1640 case VK_RSHIFT:
1641 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1642 break;
1643 }
1644 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1645 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1646 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1647 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1648
1649 msg->wparam = vkey;
1650 msg->lparam |= flags << 16;
1651 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
1652 }
1653
1654 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1655
1656 switch (vkey)
1657 {
1658 case VK_LMENU:
1659 case VK_RMENU:
1660 if (input->kbd.flags & KEYEVENTF_KEYUP)
1661 {
1662 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1663 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1664 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1665 msg->msg = WM_SYSKEYUP;
1666 desktop->keystate[VK_MENU] &= ~0x02;
1667 }
1668 else
1669 {
1670 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1671 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1672 msg->msg = WM_SYSKEYDOWN;
1673 desktop->keystate[VK_MENU] |= 0x02;
1674 }
1675 break;
1676
1677 case VK_LCONTROL:
1678 case VK_RCONTROL:
1679 /* send WM_SYSKEYUP on release if Alt still pressed */
1680 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1681 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1682 msg->msg = WM_SYSKEYUP;
1683 desktop->keystate[VK_MENU] &= ~0x02;
1684 break;
1685
1686 default:
1687 /* send WM_SYSKEY for Alt-anykey and for F10 */
1688 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1689 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1690 /* fall through */
1691 case VK_F10:
1692 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1693 desktop->keystate[VK_MENU] &= ~0x02;
1694 break;
1695 }
1696 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1697 queue_hardware_message( desktop, msg, 1 );
1698
1699 return wait;
1700 }
1701
1702 /* queue a hardware message for a custom type of event */
1703 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1704 const hw_input_t *input )
1705 {
1706 struct hardware_msg_data *msg_data;
1707 struct message *msg;
1708
1709 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1710 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1711 {
1712 free( msg );
1713 return;
1714 }
1715 memset( msg_data, 0, sizeof(*msg_data) );
1716
1717 msg->type = MSG_HARDWARE;
1718 msg->win = get_user_full_handle( win );
1719 msg->msg = input->hw.msg;
1720 msg->wparam = 0;
1721 msg->lparam = input->hw.lparam;
1722 msg->time = get_tick_count();
1723 msg->result = NULL;
1724 msg->data = msg_data;
1725 msg->data_size = sizeof(*msg_data);
1726
1727 queue_hardware_message( desktop, msg, 1 );
1728 }
1729
1730 /* check message filter for a hardware message */
1731 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1732 user_handle_t filter_win, unsigned int first, unsigned int last )
1733 {
1734 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1735 {
1736 /* we can only test the window for a keyboard message since the
1737 * dest window for a mouse message depends on hittest */
1738 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1739 return 0;
1740 /* the message code is final for a keyboard message, we can simply check it */
1741 return check_msg_filter( msg_code, first, last );
1742 }
1743 else /* mouse message */
1744 {
1745 /* we need to check all possible values that the message can have in the end */
1746
1747 if (check_msg_filter( msg_code, first, last )) return 1;
1748 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1749
1750 /* all other messages can become non-client messages */
1751 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1752
1753 /* clicks can become double-clicks or non-client double-clicks */
1754 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1755 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1756 {
1757 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1758 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1759 }
1760 return 0;
1761 }
1762 }
1763
1764
1765 /* find a hardware message for the given queue */
1766 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1767 unsigned int first, unsigned int last, struct get_message_reply *reply )
1768 {
1769 struct thread_input *input = thread->queue->input;
1770 struct thread *win_thread;
1771 struct list *ptr;
1772 user_handle_t win;
1773 int clear_bits, got_one = 0;
1774 unsigned int msg_code;
1775
1776 ptr = list_head( &input->msg_list );
1777 if (hw_id)
1778 {
1779 while (ptr)
1780 {
1781 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1782 if (msg->unique_id == hw_id) break;
1783 ptr = list_next( &input->msg_list, ptr );
1784 }
1785 if (!ptr) ptr = list_head( &input->msg_list );
1786 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1787 }
1788
1789 if (ptr == list_head( &input->msg_list ))
1790 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1791 else
1792 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1793
1794 while (ptr)
1795 {
1796 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1797 struct hardware_msg_data *data = msg->data;
1798
1799 ptr = list_next( &input->msg_list, ptr );
1800 win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
1801 if (!win || !(win_thread = get_window_thread( win )))
1802 {
1803 /* no window at all, remove it */
1804 update_input_key_state( input->desktop, input->keystate, msg );
1805 list_remove( &msg->entry );
1806 free_message( msg );
1807 continue;
1808 }
1809 if (win_thread != thread)
1810 {
1811 if (win_thread->queue->input == input)
1812 {
1813 /* wake the other thread */
1814 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1815 got_one = 1;
1816 }
1817 else
1818 {
1819 /* for another thread input, drop it */
1820 update_input_key_state( input->desktop, input->keystate, msg );
1821 list_remove( &msg->entry );
1822 free_message( msg );
1823 }
1824 release_object( win_thread );
1825 continue;
1826 }
1827 release_object( win_thread );
1828
1829 /* if we already got a message for another thread, or if it doesn't
1830 * match the filter we skip it */
1831 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1832 {
1833 clear_bits &= ~get_hardware_msg_bit( msg );
1834 continue;
1835 }
1836 /* now we can return it */
1837 if (!msg->unique_id) msg->unique_id = get_unique_id();
1838 reply->type = MSG_HARDWARE;
1839 reply->win = win;
1840 reply->msg = msg_code;
1841 reply->wparam = msg->wparam;
1842 reply->lparam = msg->lparam;
1843 reply->time = msg->time;
1844
1845 data->hw_id = msg->unique_id;
1846 set_reply_data( msg->data, msg->data_size );
1847 return 1;
1848 }
1849 /* nothing found, clear the hardware queue bits */
1850 clear_queue_bits( thread->queue, clear_bits );
1851 return 0;
1852 }
1853
1854 /* increment (or decrement if 'incr' is negative) the queue paint count */
1855 void inc_queue_paint_count( struct thread *thread, int incr )
1856 {
1857 struct msg_queue *queue = thread->queue;
1858
1859 assert( queue );
1860
1861 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1862
1863 if (queue->paint_count)
1864 set_queue_bits( queue, QS_PAINT );
1865 else
1866 clear_queue_bits( queue, QS_PAINT );
1867 }
1868
1869
1870 /* remove all messages and timers belonging to a certain window */
1871 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1872 {
1873 struct msg_queue *queue = thread->queue;
1874 struct list *ptr;
1875 int i;
1876
1877 if (!queue) return;
1878
1879 /* remove timers */
1880
1881 ptr = list_head( &queue->pending_timers );
1882 while (ptr)
1883 {
1884 struct list *next = list_next( &queue->pending_timers, ptr );
1885 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1886 if (timer->win == win) free_timer( queue, timer );
1887 ptr = next;
1888 }
1889 ptr = list_head( &queue->expired_timers );
1890 while (ptr)
1891 {
1892 struct list *next = list_next( &queue->expired_timers, ptr );
1893 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1894 if (timer->win == win) free_timer( queue, timer );
1895 ptr = next;
1896 }
1897
1898 /* remove messages */
1899 for (i = 0; i < NB_MSG_KINDS; i++)
1900 {
1901 struct list *ptr, *next;
1902
1903 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1904 {
1905 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1906 if (msg->win == win) remove_queue_message( queue, msg, i );
1907 }
1908 }
1909
1910 thread_input_cleanup_window( queue, win );
1911 }
1912
1913 /* post a message to a window; used by socket handling */
1914 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1915 {
1916 struct message *msg;
1917 struct thread *thread = get_window_thread( win );
1918
1919 if (!thread) return;
1920
1921 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1922 {
1923 msg->type = MSG_POSTED;
1924 msg->win = get_user_full_handle( win );
1925 msg->msg = message;
1926 msg->wparam = wparam;
1927 msg->lparam = lparam;
1928 msg->time = get_tick_count();
1929 msg->result = NULL;
1930 msg->data = NULL;
1931 msg->data_size = 0;
1932
1933 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1934 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1935 }
1936 release_object( thread );
1937 }
1938
1939 /* post a win event */
1940 void post_win_event( struct thread *thread, unsigned int event,
1941 user_handle_t win, unsigned int object_id,
1942 unsigned int child_id, client_ptr_t hook_proc,
1943 const WCHAR *module, data_size_t module_size,
1944 user_handle_t hook)
1945 {
1946 struct message *msg;
1947
1948 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1949 {
1950 struct winevent_msg_data *data;
1951
1952 msg->type = MSG_WINEVENT;
1953 msg->win = get_user_full_handle( win );
1954 msg->msg = event;
1955 msg->wparam = object_id;
1956 msg->lparam = child_id;
1957 msg->time = get_tick_count();
1958 msg->result = NULL;
1959
1960 if ((data = malloc( sizeof(*data) + module_size )))
1961 {
1962 data->hook = hook;
1963 data->tid = get_thread_id( current );
1964 data->hook_proc = hook_proc;
1965 memcpy( data + 1, module, module_size );
1966
1967 msg->data = data;
1968 msg->data_size = sizeof(*data) + module_size;
1969
1970 if (debug_level > 1)
1971 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1972 get_thread_id(thread), event, win, object_id, child_id );
1973 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1974 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1975 }
1976 else
1977 free( msg );
1978 }
1979 }
1980
1981 /* free all hotkeys on a desktop, optionally filtering by window */
1982 void free_hotkeys( struct desktop *desktop, user_handle_t window )
1983 {
1984 struct hotkey *hotkey, *hotkey2;
1985
1986 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &desktop->hotkeys, struct hotkey, entry )
1987 {
1988 if (!window || hotkey->win == window)
1989 {
1990 list_remove( &hotkey->entry );
1991 free( hotkey );
1992 }
1993 }
1994 }
1995
1996
1997 /* check if the thread owning the window is hung */
1998 DECL_HANDLER(is_window_hung)
1999 {
2000 struct thread *thread;
2001
2002 thread = get_window_thread( req->win );
2003 if (thread)
2004 {
2005 reply->is_hung = is_queue_hung( thread->queue );
2006 release_object( thread );
2007 }
2008 else reply->is_hung = 0;
2009 }
2010
2011
2012 /* get the message queue of the current thread */
2013 DECL_HANDLER(get_msg_queue)
2014 {
2015 struct msg_queue *queue = get_current_queue();
2016
2017 reply->handle = 0;
2018 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
2019 }
2020
2021
2022 /* set the file descriptor associated to the current thread queue */
2023 DECL_HANDLER(set_queue_fd)
2024 {
2025 struct msg_queue *queue = get_current_queue();
2026 struct file *file;
2027 int unix_fd;
2028
2029 if (queue->fd) /* fd can only be set once */
2030 {
2031 set_error( STATUS_ACCESS_DENIED );
2032 return;
2033 }
2034 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
2035
2036 if ((unix_fd = get_file_unix_fd( file )) != -1)
2037 {
2038 if ((unix_fd = dup( unix_fd )) != -1)
2039 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
2040 else
2041 file_set_error();
2042 }
2043 release_object( file );
2044 }
2045
2046
2047 /* set the current message queue wakeup mask */
2048 DECL_HANDLER(set_queue_mask)
2049 {
2050 struct msg_queue *queue = get_current_queue();
2051
2052 if (queue)
2053 {
2054 queue->wake_mask = req->wake_mask;
2055 queue->changed_mask = req->changed_mask;
2056 reply->wake_bits = queue->wake_bits;
2057 reply->changed_bits = queue->changed_bits;
2058 if (is_signaled( queue ))
2059 {
2060 /* if skip wait is set, do what would have been done in the subsequent wait */
2061 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
2062 else wake_up( &queue->obj, 0 );
2063 }
2064 }
2065 }
2066
2067
2068 /* get the current message queue status */
2069 DECL_HANDLER(get_queue_status)
2070 {
2071 struct msg_queue *queue = current->queue;
2072 if (queue)
2073 {
2074 reply->wake_bits = queue->wake_bits;
2075 reply->changed_bits = queue->changed_bits;
2076 if (req->clear) queue->changed_bits = 0;
2077 }
2078 else reply->wake_bits = reply->changed_bits = 0;
2079 }
2080
2081
2082 /* send a message to a thread queue */
2083 DECL_HANDLER(send_message)
2084 {
2085 struct message *msg;
2086 struct msg_queue *send_queue = get_current_queue();
2087 struct msg_queue *recv_queue = NULL;
2088 struct thread *thread = NULL;
2089
2090 if (!(thread = get_thread_from_id( req->id ))) return;
2091
2092 if (!(recv_queue = thread->queue))
2093 {
2094 set_error( STATUS_INVALID_PARAMETER );
2095 release_object( thread );
2096 return;
2097 }
2098 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
2099 {
2100 set_error( STATUS_TIMEOUT );
2101 release_object( thread );
2102 return;
2103 }
2104
2105 if ((msg = mem_alloc( sizeof(*msg) )))
2106 {
2107 msg->type = req->type;
2108 msg->win = get_user_full_handle( req->win );
2109 msg->msg = req->msg;
2110 msg->wparam = req->wparam;
2111 msg->lparam = req->lparam;
2112 msg->time = get_tick_count();
2113 msg->result = NULL;
2114 msg->data = NULL;
2115 msg->data_size = get_req_data_size();
2116
2117 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
2118 {
2119 free( msg );
2120 release_object( thread );
2121 return;
2122 }
2123
2124 switch(msg->type)
2125 {
2126 case MSG_OTHER_PROCESS:
2127 case MSG_ASCII:
2128 case MSG_UNICODE:
2129 case MSG_CALLBACK:
2130 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
2131 {
2132 free_message( msg );
2133 break;
2134 }
2135 /* fall through */
2136 case MSG_NOTIFY:
2137 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2138 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2139 break;
2140 case MSG_POSTED:
2141 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2142 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2143 break;
2144 case MSG_HARDWARE: /* should use send_hardware_message instead */
2145 case MSG_CALLBACK_RESULT: /* cannot send this one */
2146 case MSG_HOOK_LL: /* generated internally */
2147 default:
2148 set_error( STATUS_INVALID_PARAMETER );
2149 free( msg );
2150 break;
2151 }
2152 }
2153 release_object( thread );
2154 }
2155
2156 /* send a hardware message to a thread queue */
2157 DECL_HANDLER(send_hardware_message)
2158 {
2159 struct thread *thread = NULL;
2160 struct desktop *desktop;
2161 struct msg_queue *sender = get_current_queue();
2162
2163 if (req->win)
2164 {
2165 if (!(thread = get_window_thread( req->win ))) return;
2166 desktop = (struct desktop *)grab_object( thread->queue->input->desktop );
2167 }
2168 else if (!(desktop = get_thread_desktop( current, 0 ))) return;
2169
2170 switch (req->input.type)
2171 {
2172 case INPUT_MOUSE:
2173 reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
2174 break;
2175 case INPUT_KEYBOARD:
2176 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
2177 break;
2178 case INPUT_HARDWARE:
2179 queue_custom_hardware_message( desktop, req->win, &req->input );
2180 break;
2181 default:
2182 set_error( STATUS_INVALID_PARAMETER );
2183 }
2184 if (thread) release_object( thread );
2185 release_object( desktop );
2186 }
2187
2188 /* post a quit message to the current queue */
2189 DECL_HANDLER(post_quit_message)
2190 {
2191 struct msg_queue *queue = get_current_queue();
2192
2193 if (!queue)
2194 return;
2195
2196 queue->quit_message = 1;
2197 queue->exit_code = req->exit_code;
2198 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2199 }
2200
2201 /* get a message from the current queue */
2202 DECL_HANDLER(get_message)
2203 {
2204 struct timer *timer;
2205 struct list *ptr;
2206 struct msg_queue *queue = get_current_queue();
2207 user_handle_t get_win = get_user_full_handle( req->get_win );
2208 unsigned int filter = req->flags >> 16;
2209
2210 reply->active_hooks = get_active_hooks();
2211
2212 if (!queue) return;
2213 queue->last_get_msg = current_time;
2214 if (!filter) filter = QS_ALLINPUT;
2215
2216 /* first check for sent messages */
2217 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2218 {
2219 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2220 receive_message( queue, msg, reply );
2221 return;
2222 }
2223
2224 /* clear changed bits so we can wait on them if we don't find a message */
2225 if (filter & QS_POSTMESSAGE)
2226 {
2227 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2228 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2229 }
2230 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2231 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2232
2233 /* then check for posted messages */
2234 if ((filter & QS_POSTMESSAGE) &&
2235 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2236 return;
2237
2238 /* only check for quit messages if not posted messages pending.
2239 * note: the quit message isn't filtered */
2240 if (get_quit_message( queue, req->flags, reply ))
2241 return;
2242
2243 /* then check for any raw hardware message */
2244 if ((filter & QS_INPUT) &&
2245 filter_contains_hw_range( req->get_first, req->get_last ) &&
2246 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
2247 return;
2248
2249 /* now check for WM_PAINT */
2250 if ((filter & QS_PAINT) &&
2251 queue->paint_count &&
2252 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2253 (reply->win = find_window_to_repaint( get_win, current )))
2254 {
2255 reply->type = MSG_POSTED;
2256 reply->msg = WM_PAINT;
2257 reply->wparam = 0;
2258 reply->lparam = 0;
2259 reply->time = get_tick_count();
2260 return;
2261 }
2262
2263 /* now check for timer */
2264 if ((filter & QS_TIMER) &&
2265 (timer = find_expired_timer( queue, get_win, req->get_first,
2266 req->get_last, (req->flags & PM_REMOVE) )))
2267 {
2268 reply->type = MSG_POSTED;
2269 reply->win = timer->win;
2270 reply->msg = timer->msg;
2271 reply->wparam = timer->id;
2272 reply->lparam = timer->lparam;
2273 reply->time = get_tick_count();
2274 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2275 set_event( current->process->idle_event );
2276 return;
2277 }
2278
2279 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2280 queue->wake_mask = req->wake_mask;
2281 queue->changed_mask = req->changed_mask;
2282 set_error( STATUS_PENDING ); /* FIXME */
2283 }
2284
2285
2286 /* reply to a sent message */
2287 DECL_HANDLER(reply_message)
2288 {
2289 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2290 else if (current->queue->recv_result)
2291 reply_message( current->queue, req->result, 0, req->remove,
2292 get_req_data(), get_req_data_size() );
2293 }
2294
2295
2296 /* accept the current hardware message */
2297 DECL_HANDLER(accept_hardware_message)
2298 {
2299 if (current->queue)
2300 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
2301 else
2302 set_error( STATUS_ACCESS_DENIED );
2303 }
2304
2305
2306 /* retrieve the reply for the last message sent */
2307 DECL_HANDLER(get_message_reply)
2308 {
2309 struct message_result *result;
2310 struct list *entry;
2311 struct msg_queue *queue = current->queue;
2312
2313 if (queue)
2314 {
2315 set_error( STATUS_PENDING );
2316 reply->result = 0;
2317
2318 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2319
2320 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2321 if (result->replied || req->cancel)
2322 {
2323 if (result->replied)
2324 {
2325 reply->result = result->result;
2326 set_error( result->error );
2327 if (result->data)
2328 {
2329 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2330 set_reply_data_ptr( result->data, data_len );
2331 result->data = NULL;
2332 result->data_size = 0;
2333 }
2334 }
2335 remove_result_from_sender( result );
2336
2337 entry = list_head( &queue->send_result );
2338 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2339 else
2340 {
2341 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2342 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
2343 }
2344 }
2345 }
2346 else set_error( STATUS_ACCESS_DENIED );
2347 }
2348
2349
2350 /* set a window timer */
2351 DECL_HANDLER(set_win_timer)
2352 {
2353 struct timer *timer;
2354 struct msg_queue *queue;
2355 struct thread *thread = NULL;
2356 user_handle_t win = 0;
2357 lparam_t id = req->id;
2358
2359 if (req->win)
2360 {
2361 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2362 {
2363 set_error( STATUS_INVALID_HANDLE );
2364 return;
2365 }
2366 if (thread->process != current->process)
2367 {
2368 release_object( thread );
2369 set_error( STATUS_ACCESS_DENIED );
2370 return;
2371 }
2372 queue = thread->queue;
2373 /* remove it if it existed already */
2374 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2375 }
2376 else
2377 {
2378 queue = get_current_queue();
2379 /* look for a timer with this id */
2380 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2381 {
2382 /* free and reuse id */
2383 free_timer( queue, timer );
2384 }
2385 else
2386 {
2387 /* find a free id for it */
2388 do
2389 {
2390 id = queue->next_timer_id;
2391 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2392 }
2393 while (find_timer( queue, 0, req->msg, id ));
2394 }
2395 }
2396
2397 if ((timer = set_timer( queue, req->rate )))
2398 {
2399 timer->win = win;
2400 timer->msg = req->msg;
2401 timer->id = id;
2402 timer->lparam = req->lparam;
2403 reply->id = id;
2404 }
2405 if (thread) release_object( thread );
2406 }
2407
2408 /* kill a window timer */
2409 DECL_HANDLER(kill_win_timer)
2410 {
2411 struct timer *timer;
2412 struct thread *thread;
2413 user_handle_t win = 0;
2414
2415 if (req->win)
2416 {
2417 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2418 {
2419 set_error( STATUS_INVALID_HANDLE );
2420 return;
2421 }
2422 if (thread->process != current->process)
2423 {
2424 release_object( thread );
2425 set_error( STATUS_ACCESS_DENIED );
2426 return;
2427 }
2428 }
2429 else thread = (struct thread *)grab_object( current );
2430
2431 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2432 free_timer( thread->queue, timer );
2433 else
2434 set_error( STATUS_INVALID_PARAMETER );
2435
2436 release_object( thread );
2437 }
2438
2439 DECL_HANDLER(register_hotkey)
2440 {
2441 struct desktop *desktop;
2442 user_handle_t win_handle = req->window;
2443 struct hotkey *hotkey;
2444 struct hotkey *new_hotkey = NULL;
2445 struct thread *thread;
2446 const int modifier_flags = MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN;
2447
2448 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2449
2450 if (win_handle)
2451 {
2452 if (!get_user_object_handle( &win_handle, USER_WINDOW ))
2453 {
2454 release_object( desktop );
2455 set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2456 return;
2457 }
2458
2459 thread = get_window_thread( win_handle );
2460 if (thread) release_object( thread );
2461
2462 if (thread != current)
2463 {
2464 release_object( desktop );
2465 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2466 return;
2467 }
2468 }
2469
2470 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2471 {
2472 if (req->vkey == hotkey->vkey &&
2473 (req->flags & modifier_flags) == (hotkey->flags & modifier_flags))
2474 {
2475 release_object( desktop );
2476 set_win32_error( ERROR_HOTKEY_ALREADY_REGISTERED );
2477 return;
2478 }
2479 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2480 new_hotkey = hotkey;
2481 }
2482
2483 if (new_hotkey)
2484 {
2485 reply->replaced = 1;
2486 reply->flags = new_hotkey->flags;
2487 reply->vkey = new_hotkey->vkey;
2488 }
2489 else
2490 {
2491 new_hotkey = mem_alloc( sizeof(*new_hotkey) );
2492 if (new_hotkey)
2493 {
2494 list_add_tail( &desktop->hotkeys, &new_hotkey->entry );
2495 new_hotkey->queue = current->queue;
2496 new_hotkey->win = win_handle;
2497 new_hotkey->id = req->id;
2498 }
2499 }
2500
2501 if (new_hotkey)
2502 {
2503 new_hotkey->flags = req->flags;
2504 new_hotkey->vkey = req->vkey;
2505 }
2506
2507 release_object( desktop );
2508 }
2509
2510 DECL_HANDLER(unregister_hotkey)
2511 {
2512 struct desktop *desktop;
2513 user_handle_t win_handle = req->window;
2514 struct hotkey *hotkey;
2515 struct thread *thread;
2516
2517 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2518
2519 if (win_handle)
2520 {
2521 if (!get_user_object_handle( &win_handle, USER_WINDOW ))
2522 {
2523 release_object( desktop );
2524 set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2525 return;
2526 }
2527
2528 thread = get_window_thread( win_handle );
2529 if (thread) release_object( thread );
2530
2531 if (thread != current)
2532 {
2533 release_object( desktop );
2534 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2535 return;
2536 }
2537 }
2538
2539 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2540 {
2541 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2542 goto found;
2543 }
2544
2545 release_object( desktop );
2546 set_win32_error( ERROR_HOTKEY_NOT_REGISTERED );
2547 return;
2548
2549 found:
2550 reply->flags = hotkey->flags;
2551 reply->vkey = hotkey->vkey;
2552 list_remove( &hotkey->entry );
2553 free( hotkey );
2554 release_object( desktop );
2555 }
2556
2557 /* attach (or detach) thread inputs */
2558 DECL_HANDLER(attach_thread_input)
2559 {
2560 struct thread *thread_from = get_thread_from_id( req->tid_from );
2561 struct thread *thread_to = get_thread_from_id( req->tid_to );
2562
2563 if (!thread_from || !thread_to)
2564 {
2565 if (thread_from) release_object( thread_from );
2566 if (thread_to) release_object( thread_to );
2567 return;
2568 }
2569 if (thread_from != thread_to)
2570 {
2571 if (req->attach) attach_thread_input( thread_from, thread_to );
2572 else
2573 {
2574 if (thread_from->queue && thread_to->queue &&
2575 thread_from->queue->input == thread_to->queue->input)
2576 detach_thread_input( thread_from );
2577 else
2578 set_error( STATUS_ACCESS_DENIED );
2579 }
2580 }
2581 else set_error( STATUS_ACCESS_DENIED );
2582 release_object( thread_from );
2583 release_object( thread_to );
2584 }
2585
2586
2587 /* get thread input data */
2588 DECL_HANDLER(get_thread_input)
2589 {
2590 struct thread *thread = NULL;
2591 struct desktop *desktop;
2592 struct thread_input *input;
2593
2594 if (req->tid)
2595 {
2596 if (!(thread = get_thread_from_id( req->tid ))) return;
2597 if (!(desktop = get_thread_desktop( thread, 0 )))
2598 {
2599 release_object( thread );
2600 return;
2601 }
2602 input = thread->queue ? thread->queue->input : NULL;
2603 }
2604 else
2605 {
2606 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2607 input = desktop->foreground_input; /* get the foreground thread info */
2608 }
2609
2610 if (input)
2611 {
2612 reply->focus = input->focus;
2613 reply->capture = input->capture;
2614 reply->active = input->active;
2615 reply->menu_owner = input->menu_owner;
2616 reply->move_size = input->move_size;
2617 reply->caret = input->caret;
2618 reply->cursor = input->cursor;
2619 reply->show_count = input->cursor_count;
2620 reply->rect = input->caret_rect;
2621 }
2622
2623 /* foreground window is active window of foreground thread */
2624 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2625 if (thread) release_object( thread );
2626 release_object( desktop );
2627 }
2628
2629
2630 /* retrieve queue keyboard state for a given thread */
2631 DECL_HANDLER(get_key_state)
2632 {
2633 struct thread *thread;
2634 struct desktop *desktop;
2635 data_size_t size = min( 256, get_reply_max_size() );
2636
2637 if (!req->tid) /* get global async key state */
2638 {
2639 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2640 if (req->key >= 0)
2641 {
2642 reply->state = desktop->keystate[req->key & 0xff];
2643 desktop->keystate[req->key & 0xff] &= ~0x40;
2644 }
2645 set_reply_data( desktop->keystate, size );
2646 release_object( desktop );
2647 }
2648 else
2649 {
2650 if (!(thread = get_thread_from_id( req->tid ))) return;
2651 if (thread->queue)
2652 {
2653 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2654 set_reply_data( thread->queue->input->keystate, size );
2655 }
2656 release_object( thread );
2657 }
2658 }
2659
2660
2661 /* set queue keyboard state for a given thread */
2662 DECL_HANDLER(set_key_state)
2663 {
2664 struct thread *thread;
2665 struct desktop *desktop;
2666 data_size_t size = min( 256, get_req_data_size() );
2667
2668 if (!req->tid) /* set global async key state */
2669 {
2670 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2671 memcpy( desktop->keystate, get_req_data(), size );
2672 release_object( desktop );
2673 }
2674 else
2675 {
2676 if (!(thread = get_thread_from_id( req->tid ))) return;
2677 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2678 release_object( thread );
2679 }
2680 }
2681
2682
2683 /* set the system foreground window */
2684 DECL_HANDLER(set_foreground_window)
2685 {
2686 struct thread *thread = NULL;
2687 struct desktop *desktop;
2688 struct msg_queue *queue = get_current_queue();
2689
2690 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2691 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2692 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2693 reply->send_msg_new = FALSE;
2694
2695 if (is_top_level_window( req->handle ) &&
2696 ((thread = get_window_thread( req->handle ))) &&
2697 (thread->queue->input->desktop == desktop))
2698 {
2699 set_foreground_input( desktop, thread->queue->input );
2700 reply->send_msg_new = (desktop->foreground_input != queue->input);
2701 }
2702 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2703
2704 if (thread) release_object( thread );
2705 release_object( desktop );
2706 }
2707
2708
2709 /* set the current thread focus window */
2710 DECL_HANDLER(set_focus_window)
2711 {
2712 struct msg_queue *queue = get_current_queue();
2713
2714 reply->previous = 0;
2715 if (queue && check_queue_input_window( queue, req->handle ))
2716 {
2717 reply->previous = queue->input->focus;
2718 queue->input->focus = get_user_full_handle( req->handle );
2719 }
2720 }
2721
2722
2723 /* set the current thread active window */
2724 DECL_HANDLER(set_active_window)
2725 {
2726 struct msg_queue *queue = get_current_queue();
2727
2728 reply->previous = 0;
2729 if (queue && check_queue_input_window( queue, req->handle ))
2730 {
2731 if (!req->handle || make_window_active( req->handle ))
2732 {
2733 reply->previous = queue->input->active;
2734 queue->input->active = get_user_full_handle( req->handle );
2735 }
2736 else set_error( STATUS_INVALID_HANDLE );
2737 }
2738 }
2739
2740
2741 /* set the current thread capture window */
2742 DECL_HANDLER(set_capture_window)
2743 {
2744 struct msg_queue *queue = get_current_queue();
2745
2746 reply->previous = reply->full_handle = 0;
2747 if (queue && check_queue_input_window( queue, req->handle ))
2748 {
2749 struct thread_input *input = queue->input;
2750
2751 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2752 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2753 {
2754 set_error(STATUS_ACCESS_DENIED);
2755 return;
2756 }
2757 reply->previous = input->capture;
2758 input->capture = get_user_full_handle( req->handle );
2759 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2760 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2761 reply->full_handle = input->capture;
2762 }
2763 }
2764
2765
2766 /* Set the current thread caret window */
2767 DECL_HANDLER(set_caret_window)
2768 {
2769 struct msg_queue *queue = get_current_queue();
2770
2771 reply->previous = 0;
2772 if (queue && check_queue_input_window( queue, req->handle ))
2773 {
2774 struct thread_input *input = queue->input;
2775
2776 reply->previous = input->caret;
2777 reply->old_rect = input->caret_rect;
2778 reply->old_hide = input->caret_hide;
2779 reply->old_state = input->caret_state;
2780
2781 set_caret_window( input, get_user_full_handle(req->handle) );
2782 input->caret_rect.right = input->caret_rect.left + req->width;
2783 input->caret_rect.bottom = input->caret_rect.top + req->height;
2784 }
2785 }
2786
2787
2788 /* Set the current thread caret information */
2789 DECL_HANDLER(set_caret_info)
2790 {
2791 struct msg_queue *queue = get_current_queue();
2792 struct thread_input *input;
2793
2794 if (!queue) return;
2795 input = queue->input;
2796 reply->full_handle = input->caret;
2797 reply->old_rect = input->caret_rect;
2798 reply->old_hide = input->caret_hide;
2799 reply->old_state = input->caret_state;
2800
2801 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2802 {
2803 set_error( STATUS_ACCESS_DENIED );
2804 return;
2805 }
2806 if (req->flags & SET_CARET_POS)
2807 {
2808 input->caret_rect.right += req->x - input->caret_rect.left;
2809 input->caret_rect.bottom += req->y - input->caret_rect.top;
2810 input->caret_rect.left = req->x;
2811 input->caret_rect.top = req->y;
2812 }
2813 if (req->flags & SET_CARET_HIDE)
2814 {
2815 input->caret_hide += req->hide;
2816 if (input->caret_hide < 0) input->caret_hide = 0;
2817 }
2818 if (req->flags & SET_CARET_STATE)
2819 {
2820 if (req->state == -1) input->caret_state = !input->caret_state;
2821 else input->caret_state = !!req->state;
2822 }
2823 }
2824
2825
2826 /* get the time of the last input event */
2827 DECL_HANDLER(get_last_input_time)
2828 {
2829 reply->time = last_input_time;
2830 }
2831
2832 /* set/get the current cursor */
2833 DECL_HANDLER(set_cursor)
2834 {
2835 struct msg_queue *queue = get_current_queue();
2836 struct thread_input *input;
2837
2838 if (!queue) return;
2839 input = queue->input;
2840
2841 reply->prev_handle = input->cursor;
2842 reply->prev_count = input->cursor_count;
2843 reply->prev_x = input->desktop->cursor.x;
2844 reply->prev_y = input->desktop->cursor.y;
2845
2846 if (req->flags & SET_CURSOR_HANDLE)
2847 {
2848 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
2849 {
2850 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
2851 return;
2852 }
2853 input->cursor = req->handle;
2854 }
2855 if (req->flags & SET_CURSOR_COUNT)
2856 {
2857 queue->cursor_count += req->show_count;
2858 input->cursor_count += req->show_count;
2859 }
2860 if (req->flags & SET_CURSOR_POS)
2861 {
2862 set_cursor_pos( input->desktop, req->x, req->y );
2863 }
2864 if (req->flags & SET_CURSOR_CLIP)
2865 {
2866 struct desktop *desktop = input->desktop;
2867
2868 /* only the desktop owner can set the message */
2869 if (req->clip_msg && get_top_window_owner(desktop) == current->process)
2870 desktop->cursor.clip_msg = req->clip_msg;
2871
2872 set_clip_rectangle( desktop, &req->clip );
2873 }
2874
2875 reply->new_x = input->desktop->cursor.x;
2876 reply->new_y = input->desktop->cursor.y;
2877 reply->new_clip = input->desktop->cursor.clip;
2878 reply->last_change = input->desktop->cursor.last_change;
2879 }
Windows API implementation