2 * Message queues related functions
4 * Copyright 1993, 1994 Alexandre Julliard
14 #include "clipboard.h"
21 #define MAX_QUEUE_SIZE 120 /* Max. size of a message queue */
23 static HQUEUE16 hFirstQueue
= 0;
24 static HQUEUE16 hExitingQueue
= 0;
25 static HQUEUE16 hmemSysMsgQueue
= 0;
26 static MESSAGEQUEUE
*sysMsgQueue
= NULL
;
28 static MESSAGEQUEUE
*pMouseQueue
= NULL
; /* Queue for last mouse message */
29 static MESSAGEQUEUE
*pKbdQueue
= NULL
; /* Queue for last kbd message */
31 MESSAGEQUEUE
*pCursorQueue
= NULL
;
32 MESSAGEQUEUE
*pActiveQueue
= NULL
;
34 /***********************************************************************
37 void QUEUE_DumpQueue( HQUEUE16 hQueue
)
41 if (!(pq
= (MESSAGEQUEUE
*) GlobalLock16( hQueue
)) ||
42 GlobalSize16(hQueue
) < sizeof(MESSAGEQUEUE
)+pq
->queueSize
*sizeof(QMSG
))
44 fprintf( stderr
, "%04x is not a queue handle\n", hQueue
);
49 "next: %12.4x Intertask SendMessage:\n"
50 "hTask: %11.4x ----------------------\n"
51 "msgSize: %9.4x hWnd: %10.4x\n"
52 "msgCount: %8.4x msg: %11.4x\n"
53 "msgNext: %9.4x wParam: %8.4x\n"
54 "msgFree: %9.4x lParam: %8.8x\n"
55 "qSize: %11.4x lRet: %10.8x\n"
56 "wWinVer: %9.4x ISMH: %10.4x\n"
57 "paints: %10.4x hSendTask: %5.4x\n"
58 "timers: %10.4x hPrevSend: %5.4x\n"
62 pq
->next
, pq
->hTask
, pq
->msgSize
, pq
->hWnd
,
63 pq
->msgCount
, pq
->msg
, pq
->nextMessage
, pq
->wParam
,
64 pq
->nextFreeMessage
, (unsigned)pq
->lParam
, pq
->queueSize
,
65 (unsigned)pq
->SendMessageReturn
, pq
->wWinVersion
, pq
->InSendMessageHandle
,
66 pq
->wPaintCount
, pq
->hSendingTask
, pq
->wTimerCount
,
67 pq
->hPrevSendingTask
, pq
->wakeBits
, pq
->wakeMask
, pq
->hCurHook
);
71 /***********************************************************************
74 void QUEUE_WalkQueues(void)
76 HQUEUE16 hQueue
= hFirstQueue
;
78 fprintf( stderr
, "Queue Size Msgs Task\n" );
81 MESSAGEQUEUE
*queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
);
84 fprintf( stderr
, "*** Bad queue handle %04x\n", hQueue
);
87 fprintf( stderr
, "%04x %5d %4d %04x %s\n",
88 hQueue
, queue
->msgSize
, queue
->msgCount
, queue
->hTask
,
89 MODULE_GetModuleName( queue
->hTask
) );
92 fprintf( stderr
, "\n" );
96 /***********************************************************************
97 * QUEUE_IsExitingQueue
99 BOOL32
QUEUE_IsExitingQueue( HQUEUE16 hQueue
)
101 return (hExitingQueue
&& (hQueue
== hExitingQueue
));
105 /***********************************************************************
106 * QUEUE_SetExitingQueue
108 void QUEUE_SetExitingQueue( HQUEUE16 hQueue
)
110 hExitingQueue
= hQueue
;
114 /***********************************************************************
115 * QUEUE_CreateMsgQueue
117 * Creates a message queue. Doesn't link it into queue list!
119 static HQUEUE16
QUEUE_CreateMsgQueue( int size
)
122 MESSAGEQUEUE
* msgQueue
;
124 TDB
*pTask
= (TDB
*)GlobalLock16( GetCurrentTask() );
126 dprintf_msg(stddeb
,"Creating message queue...\n");
128 queueSize
= sizeof(MESSAGEQUEUE
) + size
* sizeof(QMSG
);
129 if (!(hQueue
= GlobalAlloc16( GMEM_FIXED
| GMEM_ZEROINIT
, queueSize
)))
131 msgQueue
= (MESSAGEQUEUE
*) GlobalLock16( hQueue
);
132 msgQueue
->self
= hQueue
;
133 msgQueue
->msgSize
= sizeof(QMSG
);
134 msgQueue
->queueSize
= size
;
135 msgQueue
->wakeBits
= msgQueue
->changeBits
= QS_SMPARAMSFREE
;
136 msgQueue
->wWinVersion
= pTask
? pTask
->version
: 0;
137 GlobalUnlock16( hQueue
);
142 /***********************************************************************
143 * QUEUE_DeleteMsgQueue
145 * Unlinks and deletes a message queue.
147 * Note: We need to mask asynchronous events to make sure PostMessage works
148 * even in the signal handler.
150 BOOL32
QUEUE_DeleteMsgQueue( HQUEUE16 hQueue
)
152 MESSAGEQUEUE
* msgQueue
= (MESSAGEQUEUE
*)GlobalLock16(hQueue
);
156 dprintf_msg(stddeb
,"Deleting message queue %04x\n", hQueue
);
158 if (!hQueue
|| !msgQueue
)
160 dprintf_msg(stddeb
,"DeleteMsgQueue: invalid argument.\n");
163 if( pCursorQueue
== msgQueue
) pCursorQueue
= NULL
;
164 if( pActiveQueue
== msgQueue
) pActiveQueue
= NULL
;
166 /* flush sent messages */
167 senderQ
= msgQueue
->hSendingTask
;
170 MESSAGEQUEUE
* sq
= (MESSAGEQUEUE
*)GlobalLock16(senderQ
);
172 sq
->SendMessageReturn
= 0L;
173 QUEUE_SetWakeBit( sq
, QS_SMRESULT
);
174 senderQ
= sq
->hPrevSendingTask
;
177 SIGNAL_MaskAsyncEvents( TRUE
);
179 pPrev
= &hFirstQueue
;
180 while (*pPrev
&& (*pPrev
!= hQueue
))
182 MESSAGEQUEUE
*msgQ
= (MESSAGEQUEUE
*)GlobalLock16(*pPrev
);
185 if (*pPrev
) *pPrev
= msgQueue
->next
;
188 SIGNAL_MaskAsyncEvents( FALSE
);
190 GlobalFree16( hQueue
);
195 /***********************************************************************
196 * QUEUE_CreateSysMsgQueue
198 * Create the system message queue, and set the double-click speed.
199 * Must be called only once.
201 BOOL32
QUEUE_CreateSysMsgQueue( int size
)
203 if (size
> MAX_QUEUE_SIZE
) size
= MAX_QUEUE_SIZE
;
204 else if (size
<= 0) size
= 1;
205 if (!(hmemSysMsgQueue
= QUEUE_CreateMsgQueue( size
))) return FALSE
;
206 sysMsgQueue
= (MESSAGEQUEUE
*) GlobalLock16( hmemSysMsgQueue
);
211 /***********************************************************************
214 MESSAGEQUEUE
*QUEUE_GetSysQueue(void)
220 /***********************************************************************
223 * See "Windows Internals", p.449
225 void QUEUE_SetWakeBit( MESSAGEQUEUE
*queue
, WORD bit
)
227 dprintf_msg(stddeb
,"SetWakeBit: queue = %04x (wm=%04x), bit = %04x\n",
228 queue
->self
, queue
->wakeMask
, bit
);
230 if (bit
& QS_MOUSE
) pMouseQueue
= queue
;
231 if (bit
& QS_KEY
) pKbdQueue
= queue
;
232 queue
->changeBits
|= bit
;
233 queue
->wakeBits
|= bit
;
234 if (queue
->wakeMask
& bit
)
237 PostEvent( queue
->hTask
);
242 /***********************************************************************
245 void QUEUE_ClearWakeBit( MESSAGEQUEUE
*queue
, WORD bit
)
247 queue
->changeBits
&= ~bit
;
248 queue
->wakeBits
&= ~bit
;
252 /***********************************************************************
255 * See "Windows Internals", p.447
257 void QUEUE_WaitBits( WORD bits
)
261 dprintf_msg(stddeb
,"WaitBits: q %04x waiting for %04x\n", GetTaskQueue(0), bits
);
265 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return;
267 if (queue
->changeBits
& bits
)
269 /* One of the bits is set; we can return */
273 if (queue
->wakeBits
& QS_SENDMESSAGE
)
275 /* Process the sent message immediately */
278 QUEUE_ReceiveMessage( queue
);
279 continue; /* nested sm crux */
282 queue
->wakeMask
= bits
| QS_SENDMESSAGE
;
283 if(queue
->changeBits
& bits
) continue;
285 dprintf_msg(stddeb
,"wb: (%04x) wakeMask is %04x, waiting\n", queue
->self
, queue
->wakeMask
);
292 /***********************************************************************
293 * QUEUE_ReceiveMessage
295 * This routine is called when a sent message is waiting for the queue.
297 void QUEUE_ReceiveMessage( MESSAGEQUEUE
*queue
)
299 MESSAGEQUEUE
*senderQ
= NULL
;
300 HQUEUE16 prevSender
= 0;
301 QSMCTRL
* prevCtrlPtr
= NULL
;
304 dprintf_msg(stddeb
, "ReceiveMessage, queue %04x\n", queue
->self
);
305 if (!(queue
->wakeBits
& QS_SENDMESSAGE
) ||
306 !(senderQ
= (MESSAGEQUEUE
*)GlobalLock16( queue
->hSendingTask
)))
307 { dprintf_msg(stddeb
,"\trcm: nothing to do\n"); return; }
309 if( !senderQ
->hPrevSendingTask
)
311 queue
->wakeBits
&= ~QS_SENDMESSAGE
; /* no more sent messages */
312 queue
->changeBits
&= ~QS_SENDMESSAGE
;
315 /* Save current state on stack */
316 prevSender
= queue
->InSendMessageHandle
;
317 prevCtrlPtr
= queue
->smResultCurrent
;
319 /* Remove sending queue from the list */
320 queue
->InSendMessageHandle
= queue
->hSendingTask
;
321 queue
->smResultCurrent
= senderQ
->smResultInit
;
322 queue
->hSendingTask
= senderQ
->hPrevSendingTask
;
324 dprintf_msg(stddeb
, "\trcm: smResultCurrent = %08x, prevCtrl = %08x\n",
325 (unsigned)queue
->smResultCurrent
, (unsigned)prevCtrlPtr
);
326 QUEUE_SetWakeBit( senderQ
, QS_SMPARAMSFREE
);
328 dprintf_msg(stddeb
, "\trcm: calling wndproc - %04x %04x %04x%04x %08x\n",
329 senderQ
->hWnd
, senderQ
->msg
, senderQ
->wParamHigh
,
330 senderQ
->wParam
, (unsigned)senderQ
->lParam
);
332 if (IsWindow32( senderQ
->hWnd
))
334 WND
*wndPtr
= WIN_FindWndPtr( senderQ
->hWnd
);
335 DWORD extraInfo
= queue
->GetMessageExtraInfoVal
;
336 queue
->GetMessageExtraInfoVal
= senderQ
->GetMessageExtraInfoVal
;
338 if (senderQ
->flags
& QUEUE_SM_WIN32
)
340 WPARAM32 wParam
= MAKELONG( senderQ
->wParam
, senderQ
->wParamHigh
);
341 dprintf_msg(stddeb
, "\trcm: msg is Win32\n" );
342 if (senderQ
->flags
& QUEUE_SM_UNICODE
)
343 result
= CallWindowProc32W( wndPtr
->winproc
,
344 senderQ
->hWnd
, senderQ
->msg
,
345 wParam
, senderQ
->lParam
);
347 result
= CallWindowProc32A( wndPtr
->winproc
,
348 senderQ
->hWnd
, senderQ
->msg
,
349 wParam
, senderQ
->lParam
);
351 else /* Win16 message */
352 result
= CallWindowProc16( (WNDPROC16
)wndPtr
->winproc
,
353 senderQ
->hWnd
, senderQ
->msg
,
354 senderQ
->wParam
, senderQ
->lParam
);
356 queue
->GetMessageExtraInfoVal
= extraInfo
; /* Restore extra info */
357 dprintf_msg(stddeb
,"\trcm: result = %08x\n", (unsigned)result
);
359 else dprintf_msg(stddeb
,"\trcm: bad hWnd\n");
361 /* Return the result to the sender task */
362 ReplyMessage16( result
);
364 queue
->InSendMessageHandle
= prevSender
;
365 queue
->smResultCurrent
= prevCtrlPtr
;
367 dprintf_msg(stddeb
,"ReceiveMessage: done!\n");
370 /***********************************************************************
373 * Try to reply to all pending sent messages on exit.
375 void QUEUE_FlushMessages( HQUEUE16 hQueue
)
377 MESSAGEQUEUE
*queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
);
381 MESSAGEQUEUE
*senderQ
= (MESSAGEQUEUE
*)GlobalLock16( queue
->hSendingTask
);
382 QSMCTRL
* CtrlPtr
= queue
->smResultCurrent
;
386 if( !(queue
->hSendingTask
= senderQ
->hPrevSendingTask
) )
387 queue
->wakeBits
&= ~QS_SENDMESSAGE
;
388 QUEUE_SetWakeBit( senderQ
, QS_SMPARAMSFREE
);
390 queue
->smResultCurrent
= CtrlPtr
;
391 while( senderQ
->wakeBits
& QS_SMRESULT
) OldYield();
393 senderQ
->SendMessageReturn
= 0;
394 senderQ
->smResult
= queue
->smResultCurrent
;
395 QUEUE_SetWakeBit( senderQ
, QS_SMRESULT
);
397 if( (senderQ
= (MESSAGEQUEUE
*)GlobalLock16( queue
->hSendingTask
)) )
398 CtrlPtr
= senderQ
->smResultInit
;
400 queue
->InSendMessageHandle
= 0;
404 /***********************************************************************
407 * Add a message to the queue. Return FALSE if queue is full.
409 BOOL32
QUEUE_AddMsg( HQUEUE16 hQueue
, MSG16
* msg
, DWORD extraInfo
)
412 MESSAGEQUEUE
*msgQueue
;
414 SIGNAL_MaskAsyncEvents( TRUE
);
416 if (!(msgQueue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
))) return FALSE
;
417 pos
= msgQueue
->nextFreeMessage
;
419 /* Check if queue is full */
420 if ((pos
== msgQueue
->nextMessage
) && (msgQueue
->msgCount
> 0))
422 SIGNAL_MaskAsyncEvents( FALSE
);
423 fprintf(stderr
,"MSG_AddMsg // queue is full !\n");
428 msgQueue
->messages
[pos
].msg
= *msg
;
429 msgQueue
->messages
[pos
].extraInfo
= extraInfo
;
430 if (pos
< msgQueue
->queueSize
-1) pos
++;
432 msgQueue
->nextFreeMessage
= pos
;
433 msgQueue
->msgCount
++;
435 SIGNAL_MaskAsyncEvents( FALSE
);
437 QUEUE_SetWakeBit( msgQueue
, QS_POSTMESSAGE
);
442 /***********************************************************************
445 * Find a message matching the given parameters. Return -1 if none available.
447 int QUEUE_FindMsg( MESSAGEQUEUE
* msgQueue
, HWND32 hwnd
, int first
, int last
)
449 int i
, pos
= msgQueue
->nextMessage
;
451 dprintf_msg(stddeb
,"QUEUE_FindMsg: hwnd=%04x pos=%d\n", hwnd
, pos
);
453 if (!msgQueue
->msgCount
) return -1;
454 if (!hwnd
&& !first
&& !last
) return pos
;
456 for (i
= 0; i
< msgQueue
->msgCount
; i
++)
458 MSG16
* msg
= &msgQueue
->messages
[pos
].msg
;
460 if (!hwnd
|| (msg
->hwnd
== hwnd
))
462 if (!first
&& !last
) return pos
;
463 if ((msg
->message
>= first
) && (msg
->message
<= last
)) return pos
;
465 if (pos
< msgQueue
->queueSize
-1) pos
++;
472 /***********************************************************************
475 * Remove a message from the queue (pos must be a valid position).
477 void QUEUE_RemoveMsg( MESSAGEQUEUE
* msgQueue
, int pos
)
479 SIGNAL_MaskAsyncEvents( TRUE
);
481 if (pos
>= msgQueue
->nextMessage
)
483 for ( ; pos
> msgQueue
->nextMessage
; pos
--)
484 msgQueue
->messages
[pos
] = msgQueue
->messages
[pos
-1];
485 msgQueue
->nextMessage
++;
486 if (msgQueue
->nextMessage
>= msgQueue
->queueSize
)
487 msgQueue
->nextMessage
= 0;
491 for ( ; pos
< msgQueue
->nextFreeMessage
; pos
++)
492 msgQueue
->messages
[pos
] = msgQueue
->messages
[pos
+1];
493 if (msgQueue
->nextFreeMessage
) msgQueue
->nextFreeMessage
--;
494 else msgQueue
->nextFreeMessage
= msgQueue
->queueSize
-1;
496 msgQueue
->msgCount
--;
497 if (!msgQueue
->msgCount
) msgQueue
->wakeBits
&= ~QS_POSTMESSAGE
;
499 SIGNAL_MaskAsyncEvents( FALSE
);
503 /***********************************************************************
506 * Wake a queue upon reception of a hardware event.
508 static void QUEUE_WakeSomeone( UINT32 message
)
513 MESSAGEQUEUE
*queue
= pCursorQueue
;
515 if( (message
>= WM_KEYFIRST
) && (message
<= WM_KEYLAST
) )
518 if( pActiveQueue
) queue
= pActiveQueue
;
522 wakeBit
= (message
== WM_MOUSEMOVE
) ? QS_MOUSEMOVE
: QS_MOUSEBUTTON
;
523 if( (hwnd
= GetCapture32()) )
524 if( (wndPtr
= WIN_FindWndPtr( hwnd
)) )
525 queue
= (MESSAGEQUEUE
*)GlobalLock16( wndPtr
->hmemTaskQ
);
528 if( (hwnd
= GetSysModalWindow16()) )
529 if( (wndPtr
= WIN_FindWndPtr( hwnd
)) )
530 queue
= (MESSAGEQUEUE
*)GlobalLock16( wndPtr
->hmemTaskQ
);
534 queue
= GlobalLock16( hFirstQueue
);
537 if (queue
->wakeMask
& wakeBit
) break;
538 queue
= GlobalLock16( queue
->next
);
542 dprintf_msg(stddeb
,"WakeSomeone: couldn't find queue\n");
547 QUEUE_SetWakeBit( queue
, wakeBit
);
551 /***********************************************************************
554 * Add an event to the system message queue.
555 * Note: the position is relative to the desktop window.
557 void hardware_event( WORD message
, WORD wParam
, LONG lParam
,
558 int xPos
, int yPos
, DWORD time
, DWORD extraInfo
)
563 if (!sysMsgQueue
) return;
564 pos
= sysMsgQueue
->nextFreeMessage
;
566 /* Merge with previous event if possible */
568 if ((message
== WM_MOUSEMOVE
) && sysMsgQueue
->msgCount
)
571 else pos
= sysMsgQueue
->queueSize
- 1;
572 msg
= &sysMsgQueue
->messages
[pos
].msg
;
573 if ((msg
->message
== message
) && (msg
->wParam
== wParam
))
574 sysMsgQueue
->msgCount
--; /* Merge events */
576 pos
= sysMsgQueue
->nextFreeMessage
; /* Don't merge */
579 /* Check if queue is full */
581 if ((pos
== sysMsgQueue
->nextMessage
) && sysMsgQueue
->msgCount
)
583 /* Queue is full, beep (but not on every mouse motion...) */
584 if (message
!= WM_MOUSEMOVE
) MessageBeep32(0);
590 msg
= &sysMsgQueue
->messages
[pos
].msg
;
592 msg
->message
= message
;
593 msg
->wParam
= wParam
;
594 msg
->lParam
= lParam
;
596 msg
->pt
.x
= xPos
& 0xffff;
597 msg
->pt
.y
= yPos
& 0xffff;
598 sysMsgQueue
->messages
[pos
].extraInfo
= extraInfo
;
599 if (pos
< sysMsgQueue
->queueSize
- 1) pos
++;
601 sysMsgQueue
->nextFreeMessage
= pos
;
602 sysMsgQueue
->msgCount
++;
603 QUEUE_WakeSomeone( message
);
607 /***********************************************************************
610 HTASK16
QUEUE_GetQueueTask( HQUEUE16 hQueue
)
612 MESSAGEQUEUE
*queue
= GlobalLock16( hQueue
);
613 return (queue
) ? queue
->hTask
: 0 ;
617 /***********************************************************************
618 * QUEUE_IncPaintCount
620 void QUEUE_IncPaintCount( HQUEUE16 hQueue
)
624 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
))) return;
625 queue
->wPaintCount
++;
626 QUEUE_SetWakeBit( queue
, QS_PAINT
);
630 /***********************************************************************
631 * QUEUE_DecPaintCount
633 void QUEUE_DecPaintCount( HQUEUE16 hQueue
)
637 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
))) return;
638 queue
->wPaintCount
--;
639 if (!queue
->wPaintCount
) queue
->wakeBits
&= ~QS_PAINT
;
643 /***********************************************************************
644 * QUEUE_IncTimerCount
646 void QUEUE_IncTimerCount( HQUEUE16 hQueue
)
650 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
))) return;
651 queue
->wTimerCount
++;
652 QUEUE_SetWakeBit( queue
, QS_TIMER
);
656 /***********************************************************************
657 * QUEUE_DecTimerCount
659 void QUEUE_DecTimerCount( HQUEUE16 hQueue
)
663 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
))) return;
664 queue
->wTimerCount
--;
665 if (!queue
->wTimerCount
) queue
->wakeBits
&= ~QS_TIMER
;
669 /***********************************************************************
670 * PostQuitMessage16 (USER.6)
672 void WINAPI
PostQuitMessage16( INT16 exitCode
)
674 PostQuitMessage32( exitCode
);
678 /***********************************************************************
679 * PostQuitMessage32 (USER32.420)
681 void WINAPI
PostQuitMessage32( INT32 exitCode
)
685 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return;
686 queue
->wPostQMsg
= TRUE
;
687 queue
->wExitCode
= (WORD
)exitCode
;
691 /***********************************************************************
692 * GetWindowTask16 (USER.224)
694 HTASK16 WINAPI
GetWindowTask16( HWND16 hwnd
)
696 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
698 if (!wndPtr
) return 0;
699 return QUEUE_GetQueueTask( wndPtr
->hmemTaskQ
);
702 /***********************************************************************
703 * GetWindowThreadProcessId (USER32.312)
705 DWORD WINAPI
GetWindowThreadProcessId( HWND32 hwnd
, LPDWORD process
)
710 WND
*wndPtr
= WIN_FindWndPtr( hwnd
);
712 if (!wndPtr
) return 0;
713 htask
=QUEUE_GetQueueTask( wndPtr
->hmemTaskQ
);
714 tdb
= (TDB
*)GlobalLock16(htask
);
715 if (!tdb
|| !tdb
->thdb
) return 0;
716 if (process
) *process
= PDB_TO_PROCESS_ID( tdb
->thdb
->process
);
717 return THDB_TO_THREAD_ID( tdb
->thdb
);
721 /***********************************************************************
722 * SetMessageQueue16 (USER.266)
724 BOOL16 WINAPI
SetMessageQueue16( INT16 size
)
726 return SetMessageQueue32( size
);
730 /***********************************************************************
731 * SetMessageQueue32 (USER32.493)
733 BOOL32 WINAPI
SetMessageQueue32( INT32 size
)
735 HQUEUE16 hQueue
, hNewQueue
;
736 MESSAGEQUEUE
*queuePtr
;
738 dprintf_msg(stddeb
,"SetMessageQueue: task %04x size %i\n", GetCurrentTask(), size
);
740 if ((size
> MAX_QUEUE_SIZE
) || (size
<= 0)) return TRUE
;
742 if( !(hNewQueue
= QUEUE_CreateMsgQueue( size
)))
744 dprintf_msg(stddeb
,"SetMessageQueue: failed!\n");
747 queuePtr
= (MESSAGEQUEUE
*)GlobalLock16( hNewQueue
);
749 SIGNAL_MaskAsyncEvents( TRUE
);
751 /* Copy data and free the old message queue */
752 if ((hQueue
= GetTaskQueue(0)) != 0)
754 MESSAGEQUEUE
*oldQ
= (MESSAGEQUEUE
*)GlobalLock16( hQueue
);
755 memcpy( &queuePtr
->wParamHigh
, &oldQ
->wParamHigh
,
756 (int)oldQ
->messages
- (int)(&oldQ
->wParamHigh
) );
757 HOOK_ResetQueueHooks( hNewQueue
);
758 if( WIN_GetDesktop()->hmemTaskQ
== hQueue
)
759 WIN_GetDesktop()->hmemTaskQ
= hNewQueue
;
760 WIN_ResetQueueWindows( WIN_GetDesktop(), hQueue
, hNewQueue
);
761 CLIPBOARD_ResetLock( hQueue
, hNewQueue
);
762 QUEUE_DeleteMsgQueue( hQueue
);
765 /* Link new queue into list */
766 queuePtr
->hTask
= GetCurrentTask();
767 queuePtr
->next
= hFirstQueue
;
768 hFirstQueue
= hNewQueue
;
770 if( !queuePtr
->next
) pCursorQueue
= queuePtr
;
771 SetTaskQueue( 0, hNewQueue
);
773 SIGNAL_MaskAsyncEvents( FALSE
);
778 /***********************************************************************
779 * GetQueueStatus16 (USER.334)
781 DWORD WINAPI
GetQueueStatus16( UINT16 flags
)
786 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return 0;
787 ret
= MAKELONG( queue
->changeBits
, queue
->wakeBits
);
788 queue
->changeBits
= 0;
789 return ret
& MAKELONG( flags
, flags
);
792 /***********************************************************************
793 * GetQueueStatus32 (USER32.283)
795 DWORD WINAPI
GetQueueStatus32( UINT32 flags
)
800 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return 0;
801 ret
= MAKELONG( queue
->changeBits
, queue
->wakeBits
);
802 queue
->changeBits
= 0;
803 return ret
& MAKELONG( flags
, flags
);
807 /***********************************************************************
808 * GetInputState16 (USER.335)
810 BOOL16 WINAPI
GetInputState16(void)
812 return GetInputState32();
816 /***********************************************************************
817 * GetInputState32 (USER32.243)
819 BOOL32 WINAPI
GetInputState32(void)
823 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) )))
825 return queue
->wakeBits
& (QS_KEY
| QS_MOUSEBUTTON
);
829 /***********************************************************************
830 * GetMessagePos (USER.119) (USER32.271)
832 DWORD WINAPI
GetMessagePos(void)
836 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return 0;
837 return queue
->GetMessagePosVal
;
841 /***********************************************************************
842 * GetMessageTime (USER.120) (USER32.272)
844 LONG WINAPI
GetMessageTime(void)
848 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return 0;
849 return queue
->GetMessageTimeVal
;
853 /***********************************************************************
854 * GetMessageExtraInfo (USER.288) (USER32.270)
856 LONG WINAPI
GetMessageExtraInfo(void)
860 if (!(queue
= (MESSAGEQUEUE
*)GlobalLock16( GetTaskQueue(0) ))) return 0;
861 return queue
->GetMessageExtraInfoVal
;