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comctl32/tab: Make WM_RBUTTONUP reach default window procedure.
[wine/multimedia.git] / server / queue.c
blob5dd4bf38cb33f9d5c4d14d7458f1708cb93d4386
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;
363 int x, y;
364
365 get_top_window_rectangle( desktop, &top_rect );
366 if (rect)
367 {
368 rectangle_t new_rect = *rect;
369 if (new_rect.left < top_rect.left) new_rect.left = top_rect.left;
370 if (new_rect.right > top_rect.right) new_rect.right = top_rect.right;
371 if (new_rect.top < top_rect.top) new_rect.top = top_rect.top;
372 if (new_rect.bottom > top_rect.bottom) new_rect.bottom = top_rect.bottom;
373 if (new_rect.left > new_rect.right || new_rect.top > new_rect.bottom) new_rect = top_rect;
374 desktop->cursor.clip = new_rect;
375 }
376 else desktop->cursor.clip = top_rect;
377
378 if (desktop->cursor.clip_msg)
379 post_desktop_message( desktop, desktop->cursor.clip_msg, rect != NULL, 0 );
380
381 /* warp the mouse to be inside the clip rect */
382 x = min( max( desktop->cursor.x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
383 y = min( max( desktop->cursor.y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
384 if (x != desktop->cursor.x || y != desktop->cursor.y) set_cursor_pos( desktop, x, y );
385 }
386
387 /* change the foreground input and reset the cursor clip rect */
388 static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
389 {
390 if (desktop->foreground_input == input) return;
391 set_clip_rectangle( desktop, NULL );
392 desktop->foreground_input = input;
393 }
394
395 /* get the hook table for a given thread */
396 struct hook_table *get_queue_hooks( struct thread *thread )
397 {
398 if (!thread->queue) return NULL;
399 return thread->queue->hooks;
400 }
401
402 /* set the hook table for a given thread, allocating the queue if needed */
403 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
404 {
405 struct msg_queue *queue = thread->queue;
406 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
407 if (queue->hooks) release_object( queue->hooks );
408 queue->hooks = hooks;
409 }
410
411 /* check the queue status */
412 static inline int is_signaled( struct msg_queue *queue )
413 {
414 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
415 }
416
417 /* set some queue bits */
418 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
419 {
420 queue->wake_bits |= bits;
421 queue->changed_bits |= bits;
422 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
423 }
424
425 /* clear some queue bits */
426 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
427 {
428 queue->wake_bits &= ~bits;
429 queue->changed_bits &= ~bits;
430 }
431
432 /* check whether msg is a keyboard message */
433 static inline int is_keyboard_msg( struct message *msg )
434 {
435 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
436 }
437
438 /* check if message is matched by the filter */
439 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
440 {
441 return (msg >= first && msg <= last);
442 }
443
444 /* check whether a message filter contains at least one potential hardware message */
445 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
446 {
447 /* hardware message ranges are (in numerical order):
448 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
449 * WM_KEYFIRST .. WM_KEYLAST
450 * WM_MOUSEFIRST .. WM_MOUSELAST
451 */
452 if (last < WM_NCMOUSEFIRST) return 0;
453 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
454 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
455 if (first > WM_MOUSELAST) return 0;
456 return 1;
457 }
458
459 /* get the QS_* bit corresponding to a given hardware message */
460 static inline int get_hardware_msg_bit( struct message *msg )
461 {
462 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
463 if (is_keyboard_msg( msg )) return QS_KEY;
464 return QS_MOUSEBUTTON;
465 }
466
467 /* get the current thread queue, creating it if needed */
468 static inline struct msg_queue *get_current_queue(void)
469 {
470 struct msg_queue *queue = current->queue;
471 if (!queue) queue = create_msg_queue( current, NULL );
472 return queue;
473 }
474
475 /* get a (pseudo-)unique id to tag hardware messages */
476 static inline unsigned int get_unique_id(void)
477 {
478 static unsigned int id;
479 if (!++id) id = 1; /* avoid an id of 0 */
480 return id;
481 }
482
483 /* try to merge a message with the last in the list; return 1 if successful */
484 static int merge_message( struct thread_input *input, const struct message *msg )
485 {
486 struct message *prev;
487 struct list *ptr;
488
489 if (msg->msg != WM_MOUSEMOVE) return 0;
490 if (!(ptr = list_tail( &input->msg_list ))) return 0;
491 prev = LIST_ENTRY( ptr, struct message, entry );
492 if (prev->result) return 0;
493 if (prev->win && msg->win && prev->win != msg->win) return 0;
494 if (prev->msg != msg->msg) return 0;
495 if (prev->type != msg->type) return 0;
496 /* now we can merge it */
497 prev->wparam = msg->wparam;
498 prev->lparam = msg->lparam;
499 prev->time = msg->time;
500 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
501 {
502 struct hardware_msg_data *prev_data = prev->data;
503 struct hardware_msg_data *msg_data = msg->data;
504 prev_data->x = msg_data->x;
505 prev_data->y = msg_data->y;
506 prev_data->info = msg_data->info;
507 }
508 return 1;
509 }
510
511 /* free a result structure */
512 static void free_result( struct message_result *result )
513 {
514 if (result->timeout) remove_timeout_user( result->timeout );
515 free( result->data );
516 if (result->callback_msg) free_message( result->callback_msg );
517 if (result->hardware_msg) free_message( result->hardware_msg );
518 if (result->desktop) release_object( result->desktop );
519 free( result );
520 }
521
522 /* remove the result from the sender list it is on */
523 static inline void remove_result_from_sender( struct message_result *result )
524 {
525 assert( result->sender );
526
527 list_remove( &result->sender_entry );
528 result->sender = NULL;
529 if (!result->receiver) free_result( result );
530 }
531
532 /* store the message result in the appropriate structure */
533 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
534 {
535 res->result = result;
536 res->error = error;
537 res->replied = 1;
538 if (res->timeout)
539 {
540 remove_timeout_user( res->timeout );
541 res->timeout = NULL;
542 }
543
544 if (res->hardware_msg)
545 {
546 if (!error && result) /* rejected by the hook */
547 free_message( res->hardware_msg );
548 else
549 queue_hardware_message( res->desktop, res->hardware_msg, 0 );
550
551 res->hardware_msg = NULL;
552 }
553
554 if (res->sender)
555 {
556 if (res->callback_msg)
557 {
558 /* queue the callback message in the sender queue */
559 struct callback_msg_data *data = res->callback_msg->data;
560 data->result = result;
561 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
562 set_queue_bits( res->sender, QS_SENDMESSAGE );
563 res->callback_msg = NULL;
564 remove_result_from_sender( res );
565 }
566 else
567 {
568 /* wake sender queue if waiting on this result */
569 if (list_head(&res->sender->send_result) == &res->sender_entry)
570 set_queue_bits( res->sender, QS_SMRESULT );
571 }
572 }
573 else if (!res->receiver) free_result( res );
574 }
575
576 /* free a message when deleting a queue or window */
577 static void free_message( struct message *msg )
578 {
579 struct message_result *result = msg->result;
580 if (result)
581 {
582 result->msg = NULL;
583 result->receiver = NULL;
584 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
585 }
586 free( msg->data );
587 free( msg );
588 }
589
590 /* remove (and free) a message from a message list */
591 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
592 enum message_kind kind )
593 {
594 list_remove( &msg->entry );
595 switch(kind)
596 {
597 case SEND_MESSAGE:
598 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
599 break;
600 case POST_MESSAGE:
601 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
602 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
603 break;
604 }
605 free_message( msg );
606 }
607
608 /* message timed out without getting a reply */
609 static void result_timeout( void *private )
610 {
611 struct message_result *result = private;
612
613 assert( !result->replied );
614
615 result->timeout = NULL;
616
617 if (result->msg) /* not received yet */
618 {
619 struct message *msg = result->msg;
620
621 result->msg = NULL;
622 msg->result = NULL;
623 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
624 result->receiver = NULL;
625 }
626 store_message_result( result, 0, STATUS_TIMEOUT );
627 }
628
629 /* allocate and fill a message result structure */
630 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
631 struct msg_queue *recv_queue,
632 struct message *msg, timeout_t timeout )
633 {
634 struct message_result *result = mem_alloc( sizeof(*result) );
635 if (result)
636 {
637 result->msg = msg;
638 result->sender = send_queue;
639 result->receiver = recv_queue;
640 result->replied = 0;
641 result->data = NULL;
642 result->data_size = 0;
643 result->timeout = NULL;
644 result->hardware_msg = NULL;
645 result->desktop = NULL;
646 result->callback_msg = NULL;
647
648 if (msg->type == MSG_CALLBACK)
649 {
650 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
651
652 if (!callback_msg)
653 {
654 free( result );
655 return NULL;
656 }
657 callback_msg->type = MSG_CALLBACK_RESULT;
658 callback_msg->win = msg->win;
659 callback_msg->msg = msg->msg;
660 callback_msg->wparam = 0;
661 callback_msg->lparam = 0;
662 callback_msg->time = get_tick_count();
663 callback_msg->result = NULL;
664 /* steal the data from the original message */
665 callback_msg->data = msg->data;
666 callback_msg->data_size = msg->data_size;
667 msg->data = NULL;
668 msg->data_size = 0;
669
670 result->callback_msg = callback_msg;
671 list_add_head( &send_queue->callback_result, &result->sender_entry );
672 }
673 else if (send_queue) list_add_head( &send_queue->send_result, &result->sender_entry );
674
675 if (timeout != TIMEOUT_INFINITE)
676 result->timeout = add_timeout_user( timeout, result_timeout, result );
677 }
678 return result;
679 }
680
681 /* receive a message, removing it from the sent queue */
682 static void receive_message( struct msg_queue *queue, struct message *msg,
683 struct get_message_reply *reply )
684 {
685 struct message_result *result = msg->result;
686
687 reply->total = msg->data_size;
688 if (msg->data_size > get_reply_max_size())
689 {
690 set_error( STATUS_BUFFER_OVERFLOW );
691 return;
692 }
693 reply->type = msg->type;
694 reply->win = msg->win;
695 reply->msg = msg->msg;
696 reply->wparam = msg->wparam;
697 reply->lparam = msg->lparam;
698 reply->time = msg->time;
699
700 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
701
702 list_remove( &msg->entry );
703 /* put the result on the receiver result stack */
704 if (result)
705 {
706 result->msg = NULL;
707 result->recv_next = queue->recv_result;
708 queue->recv_result = result;
709 }
710 free( msg );
711 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
712 }
713
714 /* set the result of the current received message */
715 static void reply_message( struct msg_queue *queue, lparam_t result,
716 unsigned int error, int remove, const void *data, data_size_t len )
717 {
718 struct message_result *res = queue->recv_result;
719
720 if (remove)
721 {
722 queue->recv_result = res->recv_next;
723 res->receiver = NULL;
724 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
725 {
726 free_result( res );
727 return;
728 }
729 }
730 if (!res->replied)
731 {
732 if (len && (res->data = memdup( data, len ))) res->data_size = len;
733 store_message_result( res, result, error );
734 }
735 }
736
737 static int match_window( user_handle_t win, user_handle_t msg_win )
738 {
739 if (!win) return 1;
740 if (win == -1 || win == 1) return !msg_win;
741 if (msg_win == win) return 1;
742 return is_child_window( win, msg_win );
743 }
744
745 /* retrieve a posted message */
746 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
747 unsigned int first, unsigned int last, unsigned int flags,
748 struct get_message_reply *reply )
749 {
750 struct message *msg;
751
752 /* check against the filters */
753 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
754 {
755 if (!match_window( win, msg->win )) continue;
756 if (!check_msg_filter( msg->msg, first, last )) continue;
757 goto found; /* found one */
758 }
759 return 0;
760
761 /* return it to the app */
762 found:
763 reply->total = msg->data_size;
764 if (msg->data_size > get_reply_max_size())
765 {
766 set_error( STATUS_BUFFER_OVERFLOW );
767 return 1;
768 }
769 reply->type = msg->type;
770 reply->win = msg->win;
771 reply->msg = msg->msg;
772 reply->wparam = msg->wparam;
773 reply->lparam = msg->lparam;
774 reply->time = msg->time;
775
776 if (flags & PM_REMOVE)
777 {
778 if (msg->data)
779 {
780 set_reply_data_ptr( msg->data, msg->data_size );
781 msg->data = NULL;
782 msg->data_size = 0;
783 }
784 remove_queue_message( queue, msg, POST_MESSAGE );
785 }
786 else if (msg->data) set_reply_data( msg->data, msg->data_size );
787
788 return 1;
789 }
790
791 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
792 struct get_message_reply *reply )
793 {
794 if (queue->quit_message)
795 {
796 reply->total = 0;
797 reply->type = MSG_POSTED;
798 reply->win = 0;
799 reply->msg = WM_QUIT;
800 reply->wparam = queue->exit_code;
801 reply->lparam = 0;
802 reply->time = get_tick_count();
803
804 if (flags & PM_REMOVE)
805 {
806 queue->quit_message = 0;
807 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
808 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
809 }
810 return 1;
811 }
812 else
813 return 0;
814 }
815
816 /* empty a message list and free all the messages */
817 static void empty_msg_list( struct list *list )
818 {
819 struct list *ptr;
820
821 while ((ptr = list_head( list )) != NULL)
822 {
823 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
824 list_remove( &msg->entry );
825 free_message( msg );
826 }
827 }
828
829 /* cleanup all pending results when deleting a queue */
830 static void cleanup_results( struct msg_queue *queue )
831 {
832 struct list *entry;
833
834 while ((entry = list_head( &queue->send_result )) != NULL)
835 {
836 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
837 }
838
839 while ((entry = list_head( &queue->callback_result )) != NULL)
840 {
841 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
842 }
843
844 while (queue->recv_result)
845 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
846 }
847
848 /* check if the thread owning the queue is hung (not checking for messages) */
849 static int is_queue_hung( struct msg_queue *queue )
850 {
851 struct wait_queue_entry *entry;
852
853 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
854 return 0; /* less than 5 seconds since last get message -> not hung */
855
856 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
857 {
858 if (entry->thread->queue == queue)
859 return 0; /* thread is waiting on queue -> not hung */
860 }
861 return 1;
862 }
863
864 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
865 {
866 struct msg_queue *queue = (struct msg_queue *)obj;
867 struct process *process = entry->thread->process;
868
869 /* a thread can only wait on its own queue */
870 if (entry->thread->queue != queue)
871 {
872 set_error( STATUS_ACCESS_DENIED );
873 return 0;
874 }
875 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
876
877 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
878 set_fd_events( queue->fd, POLLIN );
879 add_queue( obj, entry );
880 return 1;
881 }
882
883 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
884 {
885 struct msg_queue *queue = (struct msg_queue *)obj;
886
887 remove_queue( obj, entry );
888 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
889 set_fd_events( queue->fd, 0 );
890 }
891
892 static void msg_queue_dump( struct object *obj, int verbose )
893 {
894 struct msg_queue *queue = (struct msg_queue *)obj;
895 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
896 queue->wake_bits, queue->wake_mask );
897 }
898
899 static int msg_queue_signaled( struct object *obj, struct thread *thread )
900 {
901 struct msg_queue *queue = (struct msg_queue *)obj;
902 int ret = 0;
903
904 if (queue->fd)
905 {
906 if ((ret = check_fd_events( queue->fd, POLLIN )))
907 /* stop waiting on select() if we are signaled */
908 set_fd_events( queue->fd, 0 );
909 else if (!list_empty( &obj->wait_queue ))
910 /* restart waiting on poll() if we are no longer signaled */
911 set_fd_events( queue->fd, POLLIN );
912 }
913 return ret || is_signaled( queue );
914 }
915
916 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
917 {
918 struct msg_queue *queue = (struct msg_queue *)obj;
919 queue->wake_mask = 0;
920 queue->changed_mask = 0;
921 return 0; /* Not abandoned */
922 }
923
924 static void msg_queue_destroy( struct object *obj )
925 {
926 struct msg_queue *queue = (struct msg_queue *)obj;
927 struct list *ptr;
928 struct hotkey *hotkey, *hotkey2;
929 int i;
930
931 cleanup_results( queue );
932 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
933
934 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &queue->input->desktop->hotkeys, struct hotkey, entry )
935 {
936 if (hotkey->queue == queue)
937 {
938 list_remove( &hotkey->entry );
939 free( hotkey );
940 }
941 }
942
943 while ((ptr = list_head( &queue->pending_timers )))
944 {
945 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
946 list_remove( &timer->entry );
947 free( timer );
948 }
949 while ((ptr = list_head( &queue->expired_timers )))
950 {
951 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
952 list_remove( &timer->entry );
953 free( timer );
954 }
955 if (queue->timeout) remove_timeout_user( queue->timeout );
956 if (queue->input)
957 {
958 queue->input->cursor_count -= queue->cursor_count;
959 release_object( queue->input );
960 }
961 if (queue->hooks) release_object( queue->hooks );
962 if (queue->fd) release_object( queue->fd );
963 }
964
965 static void msg_queue_poll_event( struct fd *fd, int event )
966 {
967 struct msg_queue *queue = get_fd_user( fd );
968 assert( queue->obj.ops == &msg_queue_ops );
969
970 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
971 else set_fd_events( queue->fd, 0 );
972 wake_up( &queue->obj, 0 );
973 }
974
975 static void thread_input_dump( struct object *obj, int verbose )
976 {
977 struct thread_input *input = (struct thread_input *)obj;
978 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
979 input->focus, input->capture, input->active );
980 }
981
982 static void thread_input_destroy( struct object *obj )
983 {
984 struct thread_input *input = (struct thread_input *)obj;
985
986 empty_msg_list( &input->msg_list );
987 if (input->desktop)
988 {
989 if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
990 release_object( input->desktop );
991 }
992 }
993
994 /* fix the thread input data when a window is destroyed */
995 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
996 {
997 struct thread_input *input = queue->input;
998
999 if (window == input->focus) input->focus = 0;
1000 if (window == input->capture) input->capture = 0;
1001 if (window == input->active) input->active = 0;
1002 if (window == input->menu_owner) input->menu_owner = 0;
1003 if (window == input->move_size) input->move_size = 0;
1004 if (window == input->caret) set_caret_window( input, 0 );
1005 }
1006
1007 /* check if the specified window can be set in the input data of a given queue */
1008 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
1009 {
1010 struct thread *thread;
1011 int ret = 0;
1012
1013 if (!window) return 1; /* we can always clear the data */
1014
1015 if ((thread = get_window_thread( window )))
1016 {
1017 ret = (queue->input == thread->queue->input);
1018 if (!ret) set_error( STATUS_ACCESS_DENIED );
1019 release_object( thread );
1020 }
1021 else set_error( STATUS_INVALID_HANDLE );
1022
1023 return ret;
1024 }
1025
1026 /* make sure the specified thread has a queue */
1027 int init_thread_queue( struct thread *thread )
1028 {
1029 if (thread->queue) return 1;
1030 return (create_msg_queue( thread, NULL ) != NULL);
1031 }
1032
1033 /* attach two thread input data structures */
1034 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
1035 {
1036 struct desktop *desktop;
1037 struct thread_input *input;
1038 int ret;
1039
1040 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
1041 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
1042 input = (struct thread_input *)grab_object( thread_to->queue->input );
1043 if (input->desktop != desktop)
1044 {
1045 set_error( STATUS_ACCESS_DENIED );
1046 release_object( input );
1047 release_object( desktop );
1048 return 0;
1049 }
1050 release_object( desktop );
1051
1052 ret = assign_thread_input( thread_from, input );
1053 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
1054 release_object( input );
1055 return ret;
1056 }
1057
1058 /* detach two thread input data structures */
1059 void detach_thread_input( struct thread *thread_from )
1060 {
1061 struct thread_input *input;
1062
1063 if ((input = create_thread_input( thread_from )))
1064 {
1065 assign_thread_input( thread_from, input );
1066 release_object( input );
1067 }
1068 }
1069
1070
1071 /* set the next timer to expire */
1072 static void set_next_timer( struct msg_queue *queue )
1073 {
1074 struct list *ptr;
1075
1076 if (queue->timeout)
1077 {
1078 remove_timeout_user( queue->timeout );
1079 queue->timeout = NULL;
1080 }
1081 if ((ptr = list_head( &queue->pending_timers )))
1082 {
1083 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1084 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1085 }
1086 /* set/clear QS_TIMER bit */
1087 if (list_empty( &queue->expired_timers ))
1088 clear_queue_bits( queue, QS_TIMER );
1089 else
1090 set_queue_bits( queue, QS_TIMER );
1091 }
1092
1093 /* find a timer from its window and id */
1094 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1095 unsigned int msg, lparam_t id )
1096 {
1097 struct list *ptr;
1098
1099 /* we need to search both lists */
1100
1101 LIST_FOR_EACH( ptr, &queue->pending_timers )
1102 {
1103 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1104 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1105 }
1106 LIST_FOR_EACH( ptr, &queue->expired_timers )
1107 {
1108 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1109 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1110 }
1111 return NULL;
1112 }
1113
1114 /* callback for the next timer expiration */
1115 static void timer_callback( void *private )
1116 {
1117 struct msg_queue *queue = private;
1118 struct list *ptr;
1119
1120 queue->timeout = NULL;
1121 /* move on to the next timer */
1122 ptr = list_head( &queue->pending_timers );
1123 list_remove( ptr );
1124 list_add_tail( &queue->expired_timers, ptr );
1125 set_next_timer( queue );
1126 }
1127
1128 /* link a timer at its rightful place in the queue list */
1129 static void link_timer( struct msg_queue *queue, struct timer *timer )
1130 {
1131 struct list *ptr;
1132
1133 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1134 {
1135 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1136 if (t->when >= timer->when) break;
1137 }
1138 list_add_before( ptr, &timer->entry );
1139 }
1140
1141 /* remove a timer from the queue timer list and free it */
1142 static void free_timer( struct msg_queue *queue, struct timer *timer )
1143 {
1144 list_remove( &timer->entry );
1145 free( timer );
1146 set_next_timer( queue );
1147 }
1148
1149 /* restart an expired timer */
1150 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1151 {
1152 list_remove( &timer->entry );
1153 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1154 link_timer( queue, timer );
1155 set_next_timer( queue );
1156 }
1157
1158 /* find an expired timer matching the filtering parameters */
1159 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1160 unsigned int get_first, unsigned int get_last,
1161 int remove )
1162 {
1163 struct list *ptr;
1164
1165 LIST_FOR_EACH( ptr, &queue->expired_timers )
1166 {
1167 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1168 if (win && timer->win != win) continue;
1169 if (check_msg_filter( timer->msg, get_first, get_last ))
1170 {
1171 if (remove) restart_timer( queue, timer );
1172 return timer;
1173 }
1174 }
1175 return NULL;
1176 }
1177
1178 /* add a timer */
1179 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1180 {
1181 struct timer *timer = mem_alloc( sizeof(*timer) );
1182 if (timer)
1183 {
1184 timer->rate = max( rate, 1 );
1185 timer->when = current_time + (timeout_t)timer->rate * 10000;
1186 link_timer( queue, timer );
1187 /* check if we replaced the next timer */
1188 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1189 }
1190 return timer;
1191 }
1192
1193 /* change the input key state for a given key */
1194 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1195 {
1196 if (down)
1197 {
1198 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1199 keystate[key] |= down;
1200 }
1201 else keystate[key] &= ~0x80;
1202 }
1203
1204 /* update the input key state for a keyboard message */
1205 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1206 const struct message *msg )
1207 {
1208 unsigned char key;
1209 int down = 0;
1210
1211 switch (msg->msg)
1212 {
1213 case WM_LBUTTONDOWN:
1214 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1215 /* fall through */
1216 case WM_LBUTTONUP:
1217 set_input_key_state( keystate, VK_LBUTTON, down );
1218 break;
1219 case WM_MBUTTONDOWN:
1220 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1221 /* fall through */
1222 case WM_MBUTTONUP:
1223 set_input_key_state( keystate, VK_MBUTTON, down );
1224 break;
1225 case WM_RBUTTONDOWN:
1226 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1227 /* fall through */
1228 case WM_RBUTTONUP:
1229 set_input_key_state( keystate, VK_RBUTTON, down );
1230 break;
1231 case WM_XBUTTONDOWN:
1232 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1233 /* fall through */
1234 case WM_XBUTTONUP:
1235 if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1236 else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1237 break;
1238 case WM_KEYDOWN:
1239 case WM_SYSKEYDOWN:
1240 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1241 /* fall through */
1242 case WM_KEYUP:
1243 case WM_SYSKEYUP:
1244 key = (unsigned char)msg->wparam;
1245 set_input_key_state( keystate, key, down );
1246 switch(key)
1247 {
1248 case VK_LCONTROL:
1249 case VK_RCONTROL:
1250 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1251 set_input_key_state( keystate, VK_CONTROL, down );
1252 break;
1253 case VK_LMENU:
1254 case VK_RMENU:
1255 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1256 set_input_key_state( keystate, VK_MENU, down );
1257 break;
1258 case VK_LSHIFT:
1259 case VK_RSHIFT:
1260 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1261 set_input_key_state( keystate, VK_SHIFT, down );
1262 break;
1263 }
1264 break;
1265 }
1266 }
1267
1268 /* release the hardware message currently being processed by the given thread */
1269 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1270 int remove, user_handle_t new_win )
1271 {
1272 struct thread_input *input = queue->input;
1273 struct message *msg;
1274
1275 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1276 {
1277 if (msg->unique_id == hw_id) break;
1278 }
1279 if (&msg->entry == &input->msg_list) return; /* not found */
1280
1281 /* clear the queue bit for that message */
1282 if (remove || new_win)
1283 {
1284 struct message *other;
1285 int clr_bit;
1286
1287 clr_bit = get_hardware_msg_bit( msg );
1288 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1289 {
1290 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1291 {
1292 clr_bit = 0;
1293 break;
1294 }
1295 }
1296 if (clr_bit) clear_queue_bits( queue, clr_bit );
1297 }
1298
1299 if (new_win) /* set the new window */
1300 {
1301 struct thread *owner = get_window_thread( new_win );
1302 if (owner)
1303 {
1304 msg->win = new_win;
1305 if (owner->queue->input != input)
1306 {
1307 list_remove( &msg->entry );
1308 if (merge_message( owner->queue->input, msg ))
1309 {
1310 free_message( msg );
1311 release_object( owner );
1312 return;
1313 }
1314 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1315 }
1316 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1317 remove = 0;
1318 release_object( owner );
1319 }
1320 }
1321 if (remove)
1322 {
1323 update_input_key_state( input->desktop, input->keystate, msg );
1324 list_remove( &msg->entry );
1325 free_message( msg );
1326 }
1327 }
1328
1329 static int queue_hotkey_message( struct desktop *desktop, struct message *msg )
1330 {
1331 struct hotkey *hotkey;
1332 unsigned int modifiers = 0;
1333
1334 if (msg->msg != WM_KEYDOWN) return 0;
1335
1336 if (desktop->keystate[VK_MENU] & 0x80) modifiers |= MOD_ALT;
1337 if (desktop->keystate[VK_CONTROL] & 0x80) modifiers |= MOD_CONTROL;
1338 if (desktop->keystate[VK_SHIFT] & 0x80) modifiers |= MOD_SHIFT;
1339 if ((desktop->keystate[VK_LWIN] & 0x80) || (desktop->keystate[VK_RWIN] & 0x80)) modifiers |= MOD_WIN;
1340
1341 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
1342 {
1343 if (hotkey->vkey != msg->wparam) continue;
1344 if ((hotkey->flags & (MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN)) == modifiers) goto found;
1345 }
1346
1347 return 0;
1348
1349 found:
1350 msg->type = MSG_POSTED;
1351 msg->win = hotkey->win;
1352 msg->msg = WM_HOTKEY;
1353 msg->wparam = hotkey->id;
1354 msg->lparam = ((hotkey->vkey & 0xffff) << 16) | modifiers;
1355
1356 free( msg->data );
1357 msg->data = NULL;
1358 msg->data_size = 0;
1359
1360 list_add_tail( &hotkey->queue->msg_list[POST_MESSAGE], &msg->entry );
1361 set_queue_bits( hotkey->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1362 return 1;
1363 }
1364
1365 /* find the window that should receive a given hardware message */
1366 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1367 struct message *msg, unsigned int *msg_code )
1368 {
1369 struct hardware_msg_data *data = msg->data;
1370 user_handle_t win = 0;
1371
1372 *msg_code = msg->msg;
1373 if (is_keyboard_msg( msg ))
1374 {
1375 if (input && !(win = input->focus))
1376 {
1377 win = input->active;
1378 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1379 }
1380 }
1381 else /* mouse message */
1382 {
1383 if (!input || !(win = input->capture))
1384 {
1385 if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
1386 win = window_from_point( desktop, data->x, data->y );
1387 }
1388 }
1389 return win;
1390 }
1391
1392 /* queue a hardware message into a given thread input */
1393 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue )
1394 {
1395 user_handle_t win;
1396 struct thread *thread;
1397 struct thread_input *input;
1398 unsigned int msg_code;
1399 struct hardware_msg_data *data = msg->data;
1400
1401 update_input_key_state( desktop, desktop->keystate, msg );
1402 last_input_time = get_tick_count();
1403 if (msg->msg != WM_MOUSEMOVE) always_queue = 1;
1404
1405 if (is_keyboard_msg( msg ))
1406 {
1407 if (queue_hotkey_message( desktop, msg )) return;
1408 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1409 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1410 msg->lparam &= ~(KF_EXTENDED << 16);
1411 }
1412 else
1413 {
1414 if (msg->msg == WM_MOUSEMOVE)
1415 {
1416 int x = min( max( data->x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
1417 int y = min( max( data->y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
1418 if (desktop->cursor.x != x || desktop->cursor.y != y) always_queue = 1;
1419 desktop->cursor.x = x;
1420 desktop->cursor.y = y;
1421 desktop->cursor.last_change = get_tick_count();
1422 }
1423 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1424 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1425 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1426 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1427 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1428 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1429 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1430 }
1431 data->x = desktop->cursor.x;
1432 data->y = desktop->cursor.y;
1433
1434 if (msg->win && (thread = get_window_thread( msg->win )))
1435 {
1436 input = thread->queue->input;
1437 release_object( thread );
1438 }
1439 else input = desktop->foreground_input;
1440
1441 win = find_hardware_message_window( desktop, input, msg, &msg_code );
1442 if (!win || !(thread = get_window_thread(win)))
1443 {
1444 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1445 free_message( msg );
1446 return;
1447 }
1448 input = thread->queue->input;
1449
1450 if (win != desktop->cursor.win) always_queue = 1;
1451 desktop->cursor.win = win;
1452
1453 if (!always_queue || merge_message( input, msg )) free_message( msg );
1454 else
1455 {
1456 msg->unique_id = 0; /* will be set once we return it to the app */
1457 list_add_tail( &input->msg_list, &msg->entry );
1458 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1459 }
1460 release_object( thread );
1461 }
1462
1463 /* send the low-level hook message for a given hardware message */
1464 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1465 const hw_input_t *input, struct msg_queue *sender )
1466 {
1467 struct thread *hook_thread;
1468 struct msg_queue *queue;
1469 struct message *msg;
1470 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1471 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1472
1473 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1474 if (!(queue = hook_thread->queue)) return 0;
1475 if (is_queue_hung( queue )) return 0;
1476
1477 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1478
1479 msg->type = MSG_HOOK_LL;
1480 msg->win = 0;
1481 msg->msg = id;
1482 msg->wparam = hardware_msg->msg;
1483 msg->time = hardware_msg->time;
1484 msg->data_size = hardware_msg->data_size;
1485 msg->result = NULL;
1486
1487 if (input->type == INPUT_KEYBOARD)
1488 {
1489 unsigned short vkey = input->kbd.vkey;
1490 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1491 msg->lparam = (input->kbd.scan << 16) | vkey;
1492 }
1493 else msg->lparam = input->mouse.data << 16;
1494
1495 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1496 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1497 {
1498 free_message( msg );
1499 return 0;
1500 }
1501 msg->result->hardware_msg = hardware_msg;
1502 msg->result->desktop = (struct desktop *)grab_object( desktop );
1503 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1504 set_queue_bits( queue, QS_SENDMESSAGE );
1505 return 1;
1506 }
1507
1508 /* queue a hardware message for a mouse event */
1509 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1510 unsigned int hook_flags, struct msg_queue *sender )
1511 {
1512 struct hardware_msg_data *msg_data;
1513 struct message *msg;
1514 unsigned int i, time, flags;
1515 int wait = 0, x, y;
1516
1517 static const unsigned int messages[] =
1518 {
1519 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1520 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1521 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1522 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1523 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1524 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1525 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1526 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1527 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1528 0, /* 0x0200 = unused */
1529 0, /* 0x0400 = unused */
1530 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1531 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1532 };
1533
1534 desktop->cursor.last_change = get_tick_count();
1535 flags = input->mouse.flags;
1536 time = input->mouse.time;
1537 if (!time) time = desktop->cursor.last_change;
1538
1539 if (flags & MOUSEEVENTF_MOVE)
1540 {
1541 if (flags & MOUSEEVENTF_ABSOLUTE)
1542 {
1543 x = input->mouse.x;
1544 y = input->mouse.y;
1545 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1546 x == desktop->cursor.x && y == desktop->cursor.y)
1547 flags &= ~MOUSEEVENTF_MOVE;
1548 }
1549 else
1550 {
1551 x = desktop->cursor.x + input->mouse.x;
1552 y = desktop->cursor.y + input->mouse.y;
1553 }
1554 }
1555 else
1556 {
1557 x = desktop->cursor.x;
1558 y = desktop->cursor.y;
1559 }
1560
1561 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1562 {
1563 if (!messages[i]) continue;
1564 if (!(flags & (1 << i))) continue;
1565 flags &= ~(1 << i);
1566
1567 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1568 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1569 {
1570 free( msg );
1571 return 0;
1572 }
1573 memset( msg_data, 0, sizeof(*msg_data) );
1574
1575 msg->type = MSG_HARDWARE;
1576 msg->win = get_user_full_handle( win );
1577 msg->msg = messages[i];
1578 msg->wparam = input->mouse.data << 16;
1579 msg->lparam = 0;
1580 msg->time = time;
1581 msg->result = NULL;
1582 msg->data = msg_data;
1583 msg->data_size = sizeof(*msg_data);
1584 msg_data->x = x;
1585 msg_data->y = y;
1586 msg_data->info = input->mouse.info;
1587 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
1588
1589 /* specify a sender only when sending the last message */
1590 if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
1591 {
1592 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1593 queue_hardware_message( desktop, msg, 0 );
1594 }
1595 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1596 queue_hardware_message( desktop, msg, 0 );
1597 }
1598 return wait;
1599 }
1600
1601 /* queue a hardware message for a keyboard event */
1602 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1603 unsigned int hook_flags, struct msg_queue *sender )
1604 {
1605 struct hardware_msg_data *msg_data;
1606 struct message *msg;
1607 unsigned char vkey = input->kbd.vkey;
1608 int wait;
1609
1610 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1611 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1612 {
1613 free( msg );
1614 return 0;
1615 }
1616 memset( msg_data, 0, sizeof(*msg_data) );
1617
1618 msg->type = MSG_HARDWARE;
1619 msg->win = get_user_full_handle( win );
1620 msg->lparam = (input->kbd.scan << 16) | 1u; /* repeat count */
1621 msg->time = input->kbd.time;
1622 msg->result = NULL;
1623 msg->data = msg_data;
1624 msg->data_size = sizeof(*msg_data);
1625 msg_data->info = input->kbd.info;
1626 if (!msg->time) msg->time = get_tick_count();
1627 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
1628
1629 if (input->kbd.flags & KEYEVENTF_UNICODE)
1630 {
1631 msg->wparam = VK_PACKET;
1632 }
1633 else
1634 {
1635 unsigned int flags = 0;
1636 switch (vkey)
1637 {
1638 case VK_MENU:
1639 case VK_LMENU:
1640 case VK_RMENU:
1641 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1642 break;
1643 case VK_CONTROL:
1644 case VK_LCONTROL:
1645 case VK_RCONTROL:
1646 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1647 break;
1648 case VK_SHIFT:
1649 case VK_LSHIFT:
1650 case VK_RSHIFT:
1651 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1652 break;
1653 }
1654 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1655 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1656 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1657 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1658
1659 msg->wparam = vkey;
1660 msg->lparam |= flags << 16;
1661 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
1662 }
1663
1664 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1665
1666 switch (vkey)
1667 {
1668 case VK_LMENU:
1669 case VK_RMENU:
1670 if (input->kbd.flags & KEYEVENTF_KEYUP)
1671 {
1672 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1673 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1674 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1675 msg->msg = WM_SYSKEYUP;
1676 desktop->keystate[VK_MENU] &= ~0x02;
1677 }
1678 else
1679 {
1680 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1681 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1682 msg->msg = WM_SYSKEYDOWN;
1683 desktop->keystate[VK_MENU] |= 0x02;
1684 }
1685 break;
1686
1687 case VK_LCONTROL:
1688 case VK_RCONTROL:
1689 /* send WM_SYSKEYUP on release if Alt still pressed */
1690 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1691 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1692 msg->msg = WM_SYSKEYUP;
1693 desktop->keystate[VK_MENU] &= ~0x02;
1694 break;
1695
1696 default:
1697 /* send WM_SYSKEY for Alt-anykey and for F10 */
1698 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1699 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1700 /* fall through */
1701 case VK_F10:
1702 msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1703 desktop->keystate[VK_MENU] &= ~0x02;
1704 break;
1705 }
1706 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1707 queue_hardware_message( desktop, msg, 1 );
1708
1709 return wait;
1710 }
1711
1712 /* queue a hardware message for a custom type of event */
1713 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1714 const hw_input_t *input )
1715 {
1716 struct hardware_msg_data *msg_data;
1717 struct message *msg;
1718
1719 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1720 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1721 {
1722 free( msg );
1723 return;
1724 }
1725 memset( msg_data, 0, sizeof(*msg_data) );
1726
1727 msg->type = MSG_HARDWARE;
1728 msg->win = get_user_full_handle( win );
1729 msg->msg = input->hw.msg;
1730 msg->wparam = 0;
1731 msg->lparam = input->hw.lparam;
1732 msg->time = get_tick_count();
1733 msg->result = NULL;
1734 msg->data = msg_data;
1735 msg->data_size = sizeof(*msg_data);
1736
1737 queue_hardware_message( desktop, msg, 1 );
1738 }
1739
1740 /* check message filter for a hardware message */
1741 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1742 user_handle_t filter_win, unsigned int first, unsigned int last )
1743 {
1744 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1745 {
1746 /* we can only test the window for a keyboard message since the
1747 * dest window for a mouse message depends on hittest */
1748 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1749 return 0;
1750 /* the message code is final for a keyboard message, we can simply check it */
1751 return check_msg_filter( msg_code, first, last );
1752 }
1753 else /* mouse message */
1754 {
1755 /* we need to check all possible values that the message can have in the end */
1756
1757 if (check_msg_filter( msg_code, first, last )) return 1;
1758 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1759
1760 /* all other messages can become non-client messages */
1761 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1762
1763 /* clicks can become double-clicks or non-client double-clicks */
1764 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1765 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1766 {
1767 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1768 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1769 }
1770 return 0;
1771 }
1772 }
1773
1774
1775 /* find a hardware message for the given queue */
1776 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1777 unsigned int first, unsigned int last, struct get_message_reply *reply )
1778 {
1779 struct thread_input *input = thread->queue->input;
1780 struct thread *win_thread;
1781 struct list *ptr;
1782 user_handle_t win;
1783 int clear_bits, got_one = 0;
1784 unsigned int msg_code;
1785
1786 ptr = list_head( &input->msg_list );
1787 if (hw_id)
1788 {
1789 while (ptr)
1790 {
1791 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1792 if (msg->unique_id == hw_id) break;
1793 ptr = list_next( &input->msg_list, ptr );
1794 }
1795 if (!ptr) ptr = list_head( &input->msg_list );
1796 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1797 }
1798
1799 if (ptr == list_head( &input->msg_list ))
1800 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1801 else
1802 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1803
1804 while (ptr)
1805 {
1806 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1807 struct hardware_msg_data *data = msg->data;
1808
1809 ptr = list_next( &input->msg_list, ptr );
1810 win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
1811 if (!win || !(win_thread = get_window_thread( win )))
1812 {
1813 /* no window at all, remove it */
1814 update_input_key_state( input->desktop, input->keystate, msg );
1815 list_remove( &msg->entry );
1816 free_message( msg );
1817 continue;
1818 }
1819 if (win_thread != thread)
1820 {
1821 if (win_thread->queue->input == input)
1822 {
1823 /* wake the other thread */
1824 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1825 got_one = 1;
1826 }
1827 else
1828 {
1829 /* for another thread input, drop it */
1830 update_input_key_state( input->desktop, input->keystate, msg );
1831 list_remove( &msg->entry );
1832 free_message( msg );
1833 }
1834 release_object( win_thread );
1835 continue;
1836 }
1837 release_object( win_thread );
1838
1839 /* if we already got a message for another thread, or if it doesn't
1840 * match the filter we skip it */
1841 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1842 {
1843 clear_bits &= ~get_hardware_msg_bit( msg );
1844 continue;
1845 }
1846 /* now we can return it */
1847 if (!msg->unique_id) msg->unique_id = get_unique_id();
1848 reply->type = MSG_HARDWARE;
1849 reply->win = win;
1850 reply->msg = msg_code;
1851 reply->wparam = msg->wparam;
1852 reply->lparam = msg->lparam;
1853 reply->time = msg->time;
1854
1855 data->hw_id = msg->unique_id;
1856 set_reply_data( msg->data, msg->data_size );
1857 return 1;
1858 }
1859 /* nothing found, clear the hardware queue bits */
1860 clear_queue_bits( thread->queue, clear_bits );
1861 return 0;
1862 }
1863
1864 /* increment (or decrement if 'incr' is negative) the queue paint count */
1865 void inc_queue_paint_count( struct thread *thread, int incr )
1866 {
1867 struct msg_queue *queue = thread->queue;
1868
1869 assert( queue );
1870
1871 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1872
1873 if (queue->paint_count)
1874 set_queue_bits( queue, QS_PAINT );
1875 else
1876 clear_queue_bits( queue, QS_PAINT );
1877 }
1878
1879
1880 /* remove all messages and timers belonging to a certain window */
1881 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1882 {
1883 struct msg_queue *queue = thread->queue;
1884 struct list *ptr;
1885 int i;
1886
1887 if (!queue) return;
1888
1889 /* remove timers */
1890
1891 ptr = list_head( &queue->pending_timers );
1892 while (ptr)
1893 {
1894 struct list *next = list_next( &queue->pending_timers, ptr );
1895 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1896 if (timer->win == win) free_timer( queue, timer );
1897 ptr = next;
1898 }
1899 ptr = list_head( &queue->expired_timers );
1900 while (ptr)
1901 {
1902 struct list *next = list_next( &queue->expired_timers, ptr );
1903 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1904 if (timer->win == win) free_timer( queue, timer );
1905 ptr = next;
1906 }
1907
1908 /* remove messages */
1909 for (i = 0; i < NB_MSG_KINDS; i++)
1910 {
1911 struct list *ptr, *next;
1912
1913 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1914 {
1915 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1916 if (msg->win == win) remove_queue_message( queue, msg, i );
1917 }
1918 }
1919
1920 thread_input_cleanup_window( queue, win );
1921 }
1922
1923 /* post a message to a window; used by socket handling */
1924 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
1925 {
1926 struct message *msg;
1927 struct thread *thread = get_window_thread( win );
1928
1929 if (!thread) return;
1930
1931 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1932 {
1933 msg->type = MSG_POSTED;
1934 msg->win = get_user_full_handle( win );
1935 msg->msg = message;
1936 msg->wparam = wparam;
1937 msg->lparam = lparam;
1938 msg->time = get_tick_count();
1939 msg->result = NULL;
1940 msg->data = NULL;
1941 msg->data_size = 0;
1942
1943 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1944 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1945 }
1946 release_object( thread );
1947 }
1948
1949 /* post a win event */
1950 void post_win_event( struct thread *thread, unsigned int event,
1951 user_handle_t win, unsigned int object_id,
1952 unsigned int child_id, client_ptr_t hook_proc,
1953 const WCHAR *module, data_size_t module_size,
1954 user_handle_t hook)
1955 {
1956 struct message *msg;
1957
1958 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1959 {
1960 struct winevent_msg_data *data;
1961
1962 msg->type = MSG_WINEVENT;
1963 msg->win = get_user_full_handle( win );
1964 msg->msg = event;
1965 msg->wparam = object_id;
1966 msg->lparam = child_id;
1967 msg->time = get_tick_count();
1968 msg->result = NULL;
1969
1970 if ((data = malloc( sizeof(*data) + module_size )))
1971 {
1972 data->hook = hook;
1973 data->tid = get_thread_id( current );
1974 data->hook_proc = hook_proc;
1975 memcpy( data + 1, module, module_size );
1976
1977 msg->data = data;
1978 msg->data_size = sizeof(*data) + module_size;
1979
1980 if (debug_level > 1)
1981 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
1982 get_thread_id(thread), event, win, object_id, child_id );
1983 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1984 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1985 }
1986 else
1987 free( msg );
1988 }
1989 }
1990
1991 /* free all hotkeys on a desktop, optionally filtering by window */
1992 void free_hotkeys( struct desktop *desktop, user_handle_t window )
1993 {
1994 struct hotkey *hotkey, *hotkey2;
1995
1996 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &desktop->hotkeys, struct hotkey, entry )
1997 {
1998 if (!window || hotkey->win == window)
1999 {
2000 list_remove( &hotkey->entry );
2001 free( hotkey );
2002 }
2003 }
2004 }
2005
2006
2007 /* check if the thread owning the window is hung */
2008 DECL_HANDLER(is_window_hung)
2009 {
2010 struct thread *thread;
2011
2012 thread = get_window_thread( req->win );
2013 if (thread)
2014 {
2015 reply->is_hung = is_queue_hung( thread->queue );
2016 release_object( thread );
2017 }
2018 else reply->is_hung = 0;
2019 }
2020
2021
2022 /* get the message queue of the current thread */
2023 DECL_HANDLER(get_msg_queue)
2024 {
2025 struct msg_queue *queue = get_current_queue();
2026
2027 reply->handle = 0;
2028 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
2029 }
2030
2031
2032 /* set the file descriptor associated to the current thread queue */
2033 DECL_HANDLER(set_queue_fd)
2034 {
2035 struct msg_queue *queue = get_current_queue();
2036 struct file *file;
2037 int unix_fd;
2038
2039 if (queue->fd) /* fd can only be set once */
2040 {
2041 set_error( STATUS_ACCESS_DENIED );
2042 return;
2043 }
2044 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
2045
2046 if ((unix_fd = get_file_unix_fd( file )) != -1)
2047 {
2048 if ((unix_fd = dup( unix_fd )) != -1)
2049 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
2050 else
2051 file_set_error();
2052 }
2053 release_object( file );
2054 }
2055
2056
2057 /* set the current message queue wakeup mask */
2058 DECL_HANDLER(set_queue_mask)
2059 {
2060 struct msg_queue *queue = get_current_queue();
2061
2062 if (queue)
2063 {
2064 queue->wake_mask = req->wake_mask;
2065 queue->changed_mask = req->changed_mask;
2066 reply->wake_bits = queue->wake_bits;
2067 reply->changed_bits = queue->changed_bits;
2068 if (is_signaled( queue ))
2069 {
2070 /* if skip wait is set, do what would have been done in the subsequent wait */
2071 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
2072 else wake_up( &queue->obj, 0 );
2073 }
2074 }
2075 }
2076
2077
2078 /* get the current message queue status */
2079 DECL_HANDLER(get_queue_status)
2080 {
2081 struct msg_queue *queue = current->queue;
2082 if (queue)
2083 {
2084 reply->wake_bits = queue->wake_bits;
2085 reply->changed_bits = queue->changed_bits;
2086 if (req->clear) queue->changed_bits = 0;
2087 }
2088 else reply->wake_bits = reply->changed_bits = 0;
2089 }
2090
2091
2092 /* send a message to a thread queue */
2093 DECL_HANDLER(send_message)
2094 {
2095 struct message *msg;
2096 struct msg_queue *send_queue = get_current_queue();
2097 struct msg_queue *recv_queue = NULL;
2098 struct thread *thread = NULL;
2099
2100 if (!(thread = get_thread_from_id( req->id ))) return;
2101
2102 if (!(recv_queue = thread->queue))
2103 {
2104 set_error( STATUS_INVALID_PARAMETER );
2105 release_object( thread );
2106 return;
2107 }
2108 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
2109 {
2110 set_error( STATUS_TIMEOUT );
2111 release_object( thread );
2112 return;
2113 }
2114
2115 if ((msg = mem_alloc( sizeof(*msg) )))
2116 {
2117 msg->type = req->type;
2118 msg->win = get_user_full_handle( req->win );
2119 msg->msg = req->msg;
2120 msg->wparam = req->wparam;
2121 msg->lparam = req->lparam;
2122 msg->time = get_tick_count();
2123 msg->result = NULL;
2124 msg->data = NULL;
2125 msg->data_size = get_req_data_size();
2126
2127 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
2128 {
2129 free( msg );
2130 release_object( thread );
2131 return;
2132 }
2133
2134 switch(msg->type)
2135 {
2136 case MSG_OTHER_PROCESS:
2137 case MSG_ASCII:
2138 case MSG_UNICODE:
2139 case MSG_CALLBACK:
2140 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
2141 {
2142 free_message( msg );
2143 break;
2144 }
2145 /* fall through */
2146 case MSG_NOTIFY:
2147 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2148 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2149 break;
2150 case MSG_POSTED:
2151 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2152 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2153 break;
2154 case MSG_HARDWARE: /* should use send_hardware_message instead */
2155 case MSG_CALLBACK_RESULT: /* cannot send this one */
2156 case MSG_HOOK_LL: /* generated internally */
2157 default:
2158 set_error( STATUS_INVALID_PARAMETER );
2159 free( msg );
2160 break;
2161 }
2162 }
2163 release_object( thread );
2164 }
2165
2166 /* send a hardware message to a thread queue */
2167 DECL_HANDLER(send_hardware_message)
2168 {
2169 struct thread *thread = NULL;
2170 struct desktop *desktop;
2171 struct msg_queue *sender = get_current_queue();
2172
2173 if (req->win)
2174 {
2175 if (!(thread = get_window_thread( req->win ))) return;
2176 desktop = (struct desktop *)grab_object( thread->queue->input->desktop );
2177 }
2178 else if (!(desktop = get_thread_desktop( current, 0 ))) return;
2179
2180 switch (req->input.type)
2181 {
2182 case INPUT_MOUSE:
2183 reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
2184 break;
2185 case INPUT_KEYBOARD:
2186 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
2187 break;
2188 case INPUT_HARDWARE:
2189 queue_custom_hardware_message( desktop, req->win, &req->input );
2190 break;
2191 default:
2192 set_error( STATUS_INVALID_PARAMETER );
2193 }
2194 if (thread) release_object( thread );
2195 release_object( desktop );
2196 }
2197
2198 /* post a quit message to the current queue */
2199 DECL_HANDLER(post_quit_message)
2200 {
2201 struct msg_queue *queue = get_current_queue();
2202
2203 if (!queue)
2204 return;
2205
2206 queue->quit_message = 1;
2207 queue->exit_code = req->exit_code;
2208 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2209 }
2210
2211 /* get a message from the current queue */
2212 DECL_HANDLER(get_message)
2213 {
2214 struct timer *timer;
2215 struct list *ptr;
2216 struct msg_queue *queue = get_current_queue();
2217 user_handle_t get_win = get_user_full_handle( req->get_win );
2218 unsigned int filter = req->flags >> 16;
2219
2220 reply->active_hooks = get_active_hooks();
2221
2222 if (!queue) return;
2223 queue->last_get_msg = current_time;
2224 if (!filter) filter = QS_ALLINPUT;
2225
2226 /* first check for sent messages */
2227 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2228 {
2229 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2230 receive_message( queue, msg, reply );
2231 return;
2232 }
2233
2234 /* clear changed bits so we can wait on them if we don't find a message */
2235 if (filter & QS_POSTMESSAGE)
2236 {
2237 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2238 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2239 }
2240 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2241 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2242
2243 /* then check for posted messages */
2244 if ((filter & QS_POSTMESSAGE) &&
2245 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2246 return;
2247
2248 /* only check for quit messages if not posted messages pending.
2249 * note: the quit message isn't filtered */
2250 if (get_quit_message( queue, req->flags, reply ))
2251 return;
2252
2253 /* then check for any raw hardware message */
2254 if ((filter & QS_INPUT) &&
2255 filter_contains_hw_range( req->get_first, req->get_last ) &&
2256 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
2257 return;
2258
2259 /* now check for WM_PAINT */
2260 if ((filter & QS_PAINT) &&
2261 queue->paint_count &&
2262 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2263 (reply->win = find_window_to_repaint( get_win, current )))
2264 {
2265 reply->type = MSG_POSTED;
2266 reply->msg = WM_PAINT;
2267 reply->wparam = 0;
2268 reply->lparam = 0;
2269 reply->time = get_tick_count();
2270 return;
2271 }
2272
2273 /* now check for timer */
2274 if ((filter & QS_TIMER) &&
2275 (timer = find_expired_timer( queue, get_win, req->get_first,
2276 req->get_last, (req->flags & PM_REMOVE) )))
2277 {
2278 reply->type = MSG_POSTED;
2279 reply->win = timer->win;
2280 reply->msg = timer->msg;
2281 reply->wparam = timer->id;
2282 reply->lparam = timer->lparam;
2283 reply->time = get_tick_count();
2284 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2285 set_event( current->process->idle_event );
2286 return;
2287 }
2288
2289 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2290 queue->wake_mask = req->wake_mask;
2291 queue->changed_mask = req->changed_mask;
2292 set_error( STATUS_PENDING ); /* FIXME */
2293 }
2294
2295
2296 /* reply to a sent message */
2297 DECL_HANDLER(reply_message)
2298 {
2299 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2300 else if (current->queue->recv_result)
2301 reply_message( current->queue, req->result, 0, req->remove,
2302 get_req_data(), get_req_data_size() );
2303 }
2304
2305
2306 /* accept the current hardware message */
2307 DECL_HANDLER(accept_hardware_message)
2308 {
2309 if (current->queue)
2310 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
2311 else
2312 set_error( STATUS_ACCESS_DENIED );
2313 }
2314
2315
2316 /* retrieve the reply for the last message sent */
2317 DECL_HANDLER(get_message_reply)
2318 {
2319 struct message_result *result;
2320 struct list *entry;
2321 struct msg_queue *queue = current->queue;
2322
2323 if (queue)
2324 {
2325 set_error( STATUS_PENDING );
2326 reply->result = 0;
2327
2328 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2329
2330 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2331 if (result->replied || req->cancel)
2332 {
2333 if (result->replied)
2334 {
2335 reply->result = result->result;
2336 set_error( result->error );
2337 if (result->data)
2338 {
2339 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2340 set_reply_data_ptr( result->data, data_len );
2341 result->data = NULL;
2342 result->data_size = 0;
2343 }
2344 }
2345 remove_result_from_sender( result );
2346
2347 entry = list_head( &queue->send_result );
2348 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2349 else
2350 {
2351 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2352 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
2353 }
2354 }
2355 }
2356 else set_error( STATUS_ACCESS_DENIED );
2357 }
2358
2359
2360 /* set a window timer */
2361 DECL_HANDLER(set_win_timer)
2362 {
2363 struct timer *timer;
2364 struct msg_queue *queue;
2365 struct thread *thread = NULL;
2366 user_handle_t win = 0;
2367 lparam_t id = req->id;
2368
2369 if (req->win)
2370 {
2371 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2372 {
2373 set_error( STATUS_INVALID_HANDLE );
2374 return;
2375 }
2376 if (thread->process != current->process)
2377 {
2378 release_object( thread );
2379 set_error( STATUS_ACCESS_DENIED );
2380 return;
2381 }
2382 queue = thread->queue;
2383 /* remove it if it existed already */
2384 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2385 }
2386 else
2387 {
2388 queue = get_current_queue();
2389 /* look for a timer with this id */
2390 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2391 {
2392 /* free and reuse id */
2393 free_timer( queue, timer );
2394 }
2395 else
2396 {
2397 /* find a free id for it */
2398 do
2399 {
2400 id = queue->next_timer_id;
2401 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2402 }
2403 while (find_timer( queue, 0, req->msg, id ));
2404 }
2405 }
2406
2407 if ((timer = set_timer( queue, req->rate )))
2408 {
2409 timer->win = win;
2410 timer->msg = req->msg;
2411 timer->id = id;
2412 timer->lparam = req->lparam;
2413 reply->id = id;
2414 }
2415 if (thread) release_object( thread );
2416 }
2417
2418 /* kill a window timer */
2419 DECL_HANDLER(kill_win_timer)
2420 {
2421 struct timer *timer;
2422 struct thread *thread;
2423 user_handle_t win = 0;
2424
2425 if (req->win)
2426 {
2427 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2428 {
2429 set_error( STATUS_INVALID_HANDLE );
2430 return;
2431 }
2432 if (thread->process != current->process)
2433 {
2434 release_object( thread );
2435 set_error( STATUS_ACCESS_DENIED );
2436 return;
2437 }
2438 }
2439 else thread = (struct thread *)grab_object( current );
2440
2441 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2442 free_timer( thread->queue, timer );
2443 else
2444 set_error( STATUS_INVALID_PARAMETER );
2445
2446 release_object( thread );
2447 }
2448
2449 DECL_HANDLER(register_hotkey)
2450 {
2451 struct desktop *desktop;
2452 user_handle_t win_handle = req->window;
2453 struct hotkey *hotkey;
2454 struct hotkey *new_hotkey = NULL;
2455 struct thread *thread;
2456 const int modifier_flags = MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN;
2457
2458 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2459
2460 if (win_handle)
2461 {
2462 if (!get_user_object_handle( &win_handle, USER_WINDOW ))
2463 {
2464 release_object( desktop );
2465 set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2466 return;
2467 }
2468
2469 thread = get_window_thread( win_handle );
2470 if (thread) release_object( thread );
2471
2472 if (thread != current)
2473 {
2474 release_object( desktop );
2475 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2476 return;
2477 }
2478 }
2479
2480 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2481 {
2482 if (req->vkey == hotkey->vkey &&
2483 (req->flags & modifier_flags) == (hotkey->flags & modifier_flags))
2484 {
2485 release_object( desktop );
2486 set_win32_error( ERROR_HOTKEY_ALREADY_REGISTERED );
2487 return;
2488 }
2489 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2490 new_hotkey = hotkey;
2491 }
2492
2493 if (new_hotkey)
2494 {
2495 reply->replaced = 1;
2496 reply->flags = new_hotkey->flags;
2497 reply->vkey = new_hotkey->vkey;
2498 }
2499 else
2500 {
2501 new_hotkey = mem_alloc( sizeof(*new_hotkey) );
2502 if (new_hotkey)
2503 {
2504 list_add_tail( &desktop->hotkeys, &new_hotkey->entry );
2505 new_hotkey->queue = current->queue;
2506 new_hotkey->win = win_handle;
2507 new_hotkey->id = req->id;
2508 }
2509 }
2510
2511 if (new_hotkey)
2512 {
2513 new_hotkey->flags = req->flags;
2514 new_hotkey->vkey = req->vkey;
2515 }
2516
2517 release_object( desktop );
2518 }
2519
2520 DECL_HANDLER(unregister_hotkey)
2521 {
2522 struct desktop *desktop;
2523 user_handle_t win_handle = req->window;
2524 struct hotkey *hotkey;
2525 struct thread *thread;
2526
2527 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2528
2529 if (win_handle)
2530 {
2531 if (!get_user_object_handle( &win_handle, USER_WINDOW ))
2532 {
2533 release_object( desktop );
2534 set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2535 return;
2536 }
2537
2538 thread = get_window_thread( win_handle );
2539 if (thread) release_object( thread );
2540
2541 if (thread != current)
2542 {
2543 release_object( desktop );
2544 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2545 return;
2546 }
2547 }
2548
2549 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2550 {
2551 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2552 goto found;
2553 }
2554
2555 release_object( desktop );
2556 set_win32_error( ERROR_HOTKEY_NOT_REGISTERED );
2557 return;
2558
2559 found:
2560 reply->flags = hotkey->flags;
2561 reply->vkey = hotkey->vkey;
2562 list_remove( &hotkey->entry );
2563 free( hotkey );
2564 release_object( desktop );
2565 }
2566
2567 /* attach (or detach) thread inputs */
2568 DECL_HANDLER(attach_thread_input)
2569 {
2570 struct thread *thread_from = get_thread_from_id( req->tid_from );
2571 struct thread *thread_to = get_thread_from_id( req->tid_to );
2572
2573 if (!thread_from || !thread_to)
2574 {
2575 if (thread_from) release_object( thread_from );
2576 if (thread_to) release_object( thread_to );
2577 return;
2578 }
2579 if (thread_from != thread_to)
2580 {
2581 if (req->attach) attach_thread_input( thread_from, thread_to );
2582 else
2583 {
2584 if (thread_from->queue && thread_to->queue &&
2585 thread_from->queue->input == thread_to->queue->input)
2586 detach_thread_input( thread_from );
2587 else
2588 set_error( STATUS_ACCESS_DENIED );
2589 }
2590 }
2591 else set_error( STATUS_ACCESS_DENIED );
2592 release_object( thread_from );
2593 release_object( thread_to );
2594 }
2595
2596
2597 /* get thread input data */
2598 DECL_HANDLER(get_thread_input)
2599 {
2600 struct thread *thread = NULL;
2601 struct desktop *desktop;
2602 struct thread_input *input;
2603
2604 if (req->tid)
2605 {
2606 if (!(thread = get_thread_from_id( req->tid ))) return;
2607 if (!(desktop = get_thread_desktop( thread, 0 )))
2608 {
2609 release_object( thread );
2610 return;
2611 }
2612 input = thread->queue ? thread->queue->input : NULL;
2613 }
2614 else
2615 {
2616 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2617 input = desktop->foreground_input; /* get the foreground thread info */
2618 }
2619
2620 if (input)
2621 {
2622 reply->focus = input->focus;
2623 reply->capture = input->capture;
2624 reply->active = input->active;
2625 reply->menu_owner = input->menu_owner;
2626 reply->move_size = input->move_size;
2627 reply->caret = input->caret;
2628 reply->cursor = input->cursor;
2629 reply->show_count = input->cursor_count;
2630 reply->rect = input->caret_rect;
2631 }
2632
2633 /* foreground window is active window of foreground thread */
2634 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2635 if (thread) release_object( thread );
2636 release_object( desktop );
2637 }
2638
2639
2640 /* retrieve queue keyboard state for a given thread */
2641 DECL_HANDLER(get_key_state)
2642 {
2643 struct thread *thread;
2644 struct desktop *desktop;
2645 data_size_t size = min( 256, get_reply_max_size() );
2646
2647 if (!req->tid) /* get global async key state */
2648 {
2649 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2650 if (req->key >= 0)
2651 {
2652 reply->state = desktop->keystate[req->key & 0xff];
2653 desktop->keystate[req->key & 0xff] &= ~0x40;
2654 }
2655 set_reply_data( desktop->keystate, size );
2656 release_object( desktop );
2657 }
2658 else
2659 {
2660 if (!(thread = get_thread_from_id( req->tid ))) return;
2661 if (thread->queue)
2662 {
2663 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2664 set_reply_data( thread->queue->input->keystate, size );
2665 }
2666 release_object( thread );
2667 }
2668 }
2669
2670
2671 /* set queue keyboard state for a given thread */
2672 DECL_HANDLER(set_key_state)
2673 {
2674 struct thread *thread;
2675 struct desktop *desktop;
2676 data_size_t size = min( 256, get_req_data_size() );
2677
2678 if (!req->tid) /* set global async key state */
2679 {
2680 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2681 memcpy( desktop->keystate, get_req_data(), size );
2682 release_object( desktop );
2683 }
2684 else
2685 {
2686 if (!(thread = get_thread_from_id( req->tid ))) return;
2687 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2688 release_object( thread );
2689 }
2690 }
2691
2692
2693 /* set the system foreground window */
2694 DECL_HANDLER(set_foreground_window)
2695 {
2696 struct thread *thread = NULL;
2697 struct desktop *desktop;
2698 struct msg_queue *queue = get_current_queue();
2699
2700 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2701 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2702 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2703 reply->send_msg_new = FALSE;
2704
2705 if (is_top_level_window( req->handle ) &&
2706 ((thread = get_window_thread( req->handle ))) &&
2707 (thread->queue->input->desktop == desktop))
2708 {
2709 set_foreground_input( desktop, thread->queue->input );
2710 reply->send_msg_new = (desktop->foreground_input != queue->input);
2711 }
2712 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2713
2714 if (thread) release_object( thread );
2715 release_object( desktop );
2716 }
2717
2718
2719 /* set the current thread focus window */
2720 DECL_HANDLER(set_focus_window)
2721 {
2722 struct msg_queue *queue = get_current_queue();
2723
2724 reply->previous = 0;
2725 if (queue && check_queue_input_window( queue, req->handle ))
2726 {
2727 reply->previous = queue->input->focus;
2728 queue->input->focus = get_user_full_handle( req->handle );
2729 }
2730 }
2731
2732
2733 /* set the current thread active window */
2734 DECL_HANDLER(set_active_window)
2735 {
2736 struct msg_queue *queue = get_current_queue();
2737
2738 reply->previous = 0;
2739 if (queue && check_queue_input_window( queue, req->handle ))
2740 {
2741 if (!req->handle || make_window_active( req->handle ))
2742 {
2743 reply->previous = queue->input->active;
2744 queue->input->active = get_user_full_handle( req->handle );
2745 }
2746 else set_error( STATUS_INVALID_HANDLE );
2747 }
2748 }
2749
2750
2751 /* set the current thread capture window */
2752 DECL_HANDLER(set_capture_window)
2753 {
2754 struct msg_queue *queue = get_current_queue();
2755
2756 reply->previous = reply->full_handle = 0;
2757 if (queue && check_queue_input_window( queue, req->handle ))
2758 {
2759 struct thread_input *input = queue->input;
2760
2761 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
2762 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
2763 {
2764 set_error(STATUS_ACCESS_DENIED);
2765 return;
2766 }
2767 reply->previous = input->capture;
2768 input->capture = get_user_full_handle( req->handle );
2769 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2770 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2771 reply->full_handle = input->capture;
2772 }
2773 }
2774
2775
2776 /* Set the current thread caret window */
2777 DECL_HANDLER(set_caret_window)
2778 {
2779 struct msg_queue *queue = get_current_queue();
2780
2781 reply->previous = 0;
2782 if (queue && check_queue_input_window( queue, req->handle ))
2783 {
2784 struct thread_input *input = queue->input;
2785
2786 reply->previous = input->caret;
2787 reply->old_rect = input->caret_rect;
2788 reply->old_hide = input->caret_hide;
2789 reply->old_state = input->caret_state;
2790
2791 set_caret_window( input, get_user_full_handle(req->handle) );
2792 input->caret_rect.right = input->caret_rect.left + req->width;
2793 input->caret_rect.bottom = input->caret_rect.top + req->height;
2794 }
2795 }
2796
2797
2798 /* Set the current thread caret information */
2799 DECL_HANDLER(set_caret_info)
2800 {
2801 struct msg_queue *queue = get_current_queue();
2802 struct thread_input *input;
2803
2804 if (!queue) return;
2805 input = queue->input;
2806 reply->full_handle = input->caret;
2807 reply->old_rect = input->caret_rect;
2808 reply->old_hide = input->caret_hide;
2809 reply->old_state = input->caret_state;
2810
2811 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2812 {
2813 set_error( STATUS_ACCESS_DENIED );
2814 return;
2815 }
2816 if (req->flags & SET_CARET_POS)
2817 {
2818 input->caret_rect.right += req->x - input->caret_rect.left;
2819 input->caret_rect.bottom += req->y - input->caret_rect.top;
2820 input->caret_rect.left = req->x;
2821 input->caret_rect.top = req->y;
2822 }
2823 if (req->flags & SET_CARET_HIDE)
2824 {
2825 input->caret_hide += req->hide;
2826 if (input->caret_hide < 0) input->caret_hide = 0;
2827 }
2828 if (req->flags & SET_CARET_STATE)
2829 {
2830 if (req->state == -1) input->caret_state = !input->caret_state;
2831 else input->caret_state = !!req->state;
2832 }
2833 }
2834
2835
2836 /* get the time of the last input event */
2837 DECL_HANDLER(get_last_input_time)
2838 {
2839 reply->time = last_input_time;
2840 }
2841
2842 /* set/get the current cursor */
2843 DECL_HANDLER(set_cursor)
2844 {
2845 struct msg_queue *queue = get_current_queue();
2846 struct thread_input *input;
2847
2848 if (!queue) return;
2849 input = queue->input;
2850
2851 reply->prev_handle = input->cursor;
2852 reply->prev_count = input->cursor_count;
2853 reply->prev_x = input->desktop->cursor.x;
2854 reply->prev_y = input->desktop->cursor.y;
2855
2856 if (req->flags & SET_CURSOR_HANDLE)
2857 {
2858 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
2859 {
2860 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
2861 return;
2862 }
2863 input->cursor = req->handle;
2864 }
2865 if (req->flags & SET_CURSOR_COUNT)
2866 {
2867 queue->cursor_count += req->show_count;
2868 input->cursor_count += req->show_count;
2869 }
2870 if (req->flags & SET_CURSOR_POS)
2871 {
2872 set_cursor_pos( input->desktop, req->x, req->y );
2873 }
2874 if (req->flags & (SET_CURSOR_CLIP | SET_CURSOR_NOCLIP))
2875 {
2876 struct desktop *desktop = input->desktop;
2877
2878 /* only the desktop owner can set the message */
2879 if (req->clip_msg && get_top_window_owner(desktop) == current->process)
2880 desktop->cursor.clip_msg = req->clip_msg;
2881
2882 set_clip_rectangle( desktop, (req->flags & SET_CURSOR_NOCLIP) ? NULL : &req->clip );
2883 }
2884
2885 reply->new_x = input->desktop->cursor.x;
2886 reply->new_y = input->desktop->cursor.y;
2887 reply->new_clip = input->desktop->cursor.clip;
2888 reply->last_change = input->desktop->cursor.last_change;
2889 }
Maarten's multimedia branch