windows/queue.c

   1 /*
   2  * Message queues related functions
   3  *
   4  * Copyright 1993, 1994 Alexandre Julliard
   5  */
   6
   7 #include <stdlib.h>
   8 #include <signal.h>
   9 #include "module.h"
  10 #include "queue.h"
  11 #include "task.h"
  12 #include "win.h"
  13 #include "hook.h"
  14 #include "thread.h"
  15 #include "process.h"
  16 #include "stddebug.h"
  17 #include "debug.h"
  18
  19 #define MAX_QUEUE_SIZE   120  /* Max. size of a message queue */
  20
  21 static HQUEUE16 hFirstQueue = 0;
  22 static HQUEUE16 hDoomedQueue = 0;
  23 static HQUEUE16 hmemSysMsgQueue = 0;
  24 static MESSAGEQUEUE *sysMsgQueue = NULL;
  25
  26 static MESSAGEQUEUE *pMouseQueue = NULL;  /* Queue for last mouse message */
  27 static MESSAGEQUEUE *pKbdQueue = NULL;    /* Queue for last kbd message */
  28
  29 extern void SIGNAL_MaskAsyncEvents(BOOL32);
  30
  31 MESSAGEQUEUE *pCursorQueue = NULL;
  32 MESSAGEQUEUE *pActiveQueue = NULL;
  33
  34 /***********************************************************************
  35  *           QUEUE_DumpQueue
  36  */
  37 void QUEUE_DumpQueue( HQUEUE16 hQueue )
  38 {
  39     MESSAGEQUEUE *pq;
  40
  41     if (!(pq = (MESSAGEQUEUE*) GlobalLock16( hQueue )) ||
  42         GlobalSize16(hQueue) < sizeof(MESSAGEQUEUE)+pq->queueSize*sizeof(QMSG))
  43     {
  44         fprintf( stderr, "%04x is not a queue handle\n", hQueue );
  45         return;
  46     }
  47
  48     fprintf( stderr,
  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"
  59              "wakeBits: %8.4x\n"
  60              "wakeMask: %8.4x\n"
  61              "hCurHook: %8.4x\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);
  68 }
  69
  70
  71 /***********************************************************************
  72  *           QUEUE_WalkQueues
  73  */
  74 void QUEUE_WalkQueues(void)
  75 {
  76     HQUEUE16 hQueue = hFirstQueue;
  77
  78     fprintf( stderr, "Queue Size Msgs Task\n" );
  79     while (hQueue)
  80     {
  81         MESSAGEQUEUE *queue = (MESSAGEQUEUE *)GlobalLock16( hQueue );
  82         if (!queue)
  83         {
  84             fprintf( stderr, "*** Bad queue handle %04x\n", hQueue );
  85             return;
  86         }
  87         fprintf( stderr, "%04x %5d %4d %04x %s\n",
  88                  hQueue, queue->msgSize, queue->msgCount, queue->hTask,
  89                  MODULE_GetModuleName( GetExePtr(queue->hTask) ) );
  90         hQueue = queue->next;
  91     }
  92     fprintf( stderr, "\n" );
  93 }
  94
  95
  96 /***********************************************************************
  97  *           QUEUE_IsDoomedQueue
  98  */
  99 BOOL32 QUEUE_IsDoomedQueue( HQUEUE16 hQueue )
 100 {
 101     return (hDoomedQueue && (hQueue == hDoomedQueue));
 102 }
 103
 104
 105 /***********************************************************************
 106  *           QUEUE_SetDoomedQueue
 107  */
 108 void QUEUE_SetDoomedQueue( HQUEUE16 hQueue )
 109 {
 110     hDoomedQueue = hQueue;
 111 }
 112
 113
 114 /***********************************************************************
 115  *           QUEUE_CreateMsgQueue
 116  *
 117  * Creates a message queue. Doesn't link it into queue list!
 118  */
 119 static HQUEUE16 QUEUE_CreateMsgQueue( int size )
 120 {
 121     HQUEUE16 hQueue;
 122     MESSAGEQUEUE * msgQueue;
 123     int queueSize;
 124     TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 125
 126     dprintf_msg(stddeb,"Creating message queue...\n");
 127
 128     queueSize = sizeof(MESSAGEQUEUE) + size * sizeof(QMSG);
 129     if (!(hQueue = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, queueSize )))
 130         return 0;
 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 );
 138     return hQueue;
 139 }
 140
 141
 142 /***********************************************************************
 143  *           QUEUE_DeleteMsgQueue
 144  *
 145  * Unlinks and deletes a message queue.
 146  *
 147  * Note: We need to mask asynchronous events to make sure PostMessage works
 148  * even in the signal handler.
 149  */
 150 BOOL32 QUEUE_DeleteMsgQueue( HQUEUE16 hQueue )
 151 {
 152     MESSAGEQUEUE * msgQueue = (MESSAGEQUEUE*)GlobalLock16(hQueue);
 153     HQUEUE16  senderQ;
 154     HQUEUE16 *pPrev;
 155
 156     dprintf_msg(stddeb,"Deleting message queue %04x\n", hQueue);
 157
 158     if (!hQueue || !msgQueue)
 159     {
 160         dprintf_msg(stddeb,"DeleteMsgQueue: invalid argument.\n");
 161         return 0;
 162     }
 163     if( pCursorQueue == msgQueue ) pCursorQueue = NULL;
 164     if( pActiveQueue == msgQueue ) pActiveQueue = NULL;
 165
 166     /* flush sent messages */
 167     senderQ = msgQueue->hSendingTask;
 168     while( senderQ )
 169     {
 170       MESSAGEQUEUE* sq = (MESSAGEQUEUE*)GlobalLock16(senderQ);
 171       if( !sq ) break;
 172       sq->SendMessageReturn = 0L;
 173       QUEUE_SetWakeBit( sq, QS_SMRESULT );
 174       senderQ = sq->hPrevSendingTask;
 175     }
 176
 177     SIGNAL_MaskAsyncEvents( TRUE );
 178
 179     pPrev = &hFirstQueue;
 180     while (*pPrev && (*pPrev != hQueue))
 181     {
 182         MESSAGEQUEUE *msgQ = (MESSAGEQUEUE*)GlobalLock16(*pPrev);
 183         pPrev = &msgQ->next;
 184     }
 185     if (*pPrev) *pPrev = msgQueue->next;
 186     msgQueue->self = 0;
 187
 188     SIGNAL_MaskAsyncEvents( FALSE );
 189
 190     GlobalFree16( hQueue );
 191     return 1;
 192 }
 193
 194
 195 /***********************************************************************
 196  *           QUEUE_CreateSysMsgQueue
 197  *
 198  * Create the system message queue, and set the double-click speed.
 199  * Must be called only once.
 200  */
 201 BOOL32 QUEUE_CreateSysMsgQueue( int size )
 202 {
 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 );
 207     return TRUE;
 208 }
 209
 210
 211 /***********************************************************************
 212  *           QUEUE_GetSysQueue
 213  */
 214 MESSAGEQUEUE *QUEUE_GetSysQueue(void)
 215 {
 216     return sysMsgQueue;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           QUEUE_SetWakeBit
 222  *
 223  * See "Windows Internals", p.449
 224  */
 225 void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit )
 226 {
 227     dprintf_msg(stddeb,"SetWakeBit: queue = %04x (wm=%04x), bit = %04x\n",
 228                         queue->self, queue->wakeMask, bit );
 229
 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)
 235     {
 236         queue->wakeMask = 0;
 237         PostEvent( queue->hTask );
 238     }
 239 }
 240
 241
 242 /***********************************************************************
 243  *           QUEUE_ClearWakeBit
 244  */
 245 void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit )
 246 {
 247     queue->changeBits &= ~bit;
 248     queue->wakeBits   &= ~bit;
 249 }
 250
 251
 252 /***********************************************************************
 253  *           QUEUE_WaitBits
 254  *
 255  * See "Windows Internals", p.447
 256  */
 257 void QUEUE_WaitBits( WORD bits )
 258 {
 259     MESSAGEQUEUE *queue;
 260
 261     dprintf_msg(stddeb,"WaitBits: q %04x waiting for %04x\n", GetTaskQueue(0), bits);
 262
 263     for (;;)
 264     {
 265         if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return;
 266
 267         if (queue->changeBits & bits)
 268         {
 269             /* One of the bits is set; we can return */
 270             queue->wakeMask = 0;
 271             return;
 272         }
 273         if (queue->wakeBits & QS_SENDMESSAGE)
 274         {
 275             /* Process the sent message immediately */
 276
 277             queue->wakeMask = 0;
 278             QUEUE_ReceiveMessage( queue );
 279             continue;                           /* nested sm crux */
 280         }
 281
 282         queue->wakeMask = bits | QS_SENDMESSAGE;
 283         if(queue->changeBits & bits) continue;
 284
 285         dprintf_msg(stddeb,"wb: (%04x) wakeMask is %04x, waiting\n", queue->self, queue->wakeMask);
 286
 287         WaitEvent( 0 );
 288     }
 289 }
 290
 291
 292 /***********************************************************************
 293  *           QUEUE_ReceiveMessage
 294  *
 295  * This routine is called when a sent message is waiting for the queue.
 296  */
 297 void QUEUE_ReceiveMessage( MESSAGEQUEUE *queue )
 298 {
 299     MESSAGEQUEUE *senderQ = NULL;
 300     HQUEUE16      prevSender = 0;
 301     QSMCTRL*      prevCtrlPtr = NULL;
 302     LRESULT       result = 0;
 303
 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; }
 308
 309     if( !senderQ->hPrevSendingTask )
 310     {
 311       queue->wakeBits &= ~QS_SENDMESSAGE;       /* no more sent messages */
 312       queue->changeBits &= ~QS_SENDMESSAGE;
 313     }
 314
 315     /* Save current state on stack */
 316     prevSender                 = queue->InSendMessageHandle;
 317     prevCtrlPtr                = queue->smResultCurrent;
 318
 319     /* Remove sending queue from the list */
 320     queue->InSendMessageHandle = queue->hSendingTask;
 321     queue->smResultCurrent     = senderQ->smResultInit;
 322     queue->hSendingTask        = senderQ->hPrevSendingTask;
 323
 324     dprintf_msg(stddeb, "\trcm: smResultCurrent = %08x, prevCtrl = %08x\n",
 325                                 (unsigned)queue->smResultCurrent, (unsigned)prevCtrlPtr );
 326     QUEUE_SetWakeBit( senderQ, QS_SMPARAMSFREE );
 327
 328     dprintf_msg(stddeb, "\trcm: calling wndproc - %04x %04x %04x %08x\n",
 329             senderQ->hWnd, senderQ->msg, senderQ->wParam, (unsigned)senderQ->lParam );
 330
 331     if (IsWindow32( senderQ->hWnd ))
 332     {
 333         DWORD extraInfo = queue->GetMessageExtraInfoVal;
 334         queue->GetMessageExtraInfoVal = senderQ->GetMessageExtraInfoVal;
 335
 336         result = CallWindowProc16( (WNDPROC16)GetWindowLong16(senderQ->hWnd, GWL_WNDPROC),
 337                                    senderQ->hWnd, senderQ->msg, senderQ->wParam, senderQ->lParam );
 338
 339         queue->GetMessageExtraInfoVal = extraInfo;  /* Restore extra info */
 340         dprintf_msg(stddeb,"\trcm: result =  %08x\n", (unsigned)result );
 341     }
 342     else dprintf_msg(stddeb,"\trcm: bad hWnd\n");
 343
 344     /* Return the result to the sender task */
 345     ReplyMessage16( result );
 346
 347     queue->InSendMessageHandle = prevSender;
 348     queue->smResultCurrent     = prevCtrlPtr;
 349
 350     dprintf_msg(stddeb,"ReceiveMessage: done!\n");
 351 }
 352
 353 /***********************************************************************
 354  *           QUEUE_FlushMessage
 355  *
 356  * Try to reply to all pending sent messages on exit.
 357  */
 358 void QUEUE_FlushMessages( HQUEUE16 hQueue )
 359 {
 360   MESSAGEQUEUE *queue = (MESSAGEQUEUE*)GlobalLock16( hQueue );
 361
 362   if( queue )
 363   {
 364     MESSAGEQUEUE *senderQ = (MESSAGEQUEUE*)GlobalLock16( queue->hSendingTask);
 365     QSMCTRL*      CtrlPtr = queue->smResultCurrent;
 366
 367     while( senderQ )
 368     {
 369       if( !(queue->hSendingTask = senderQ->hPrevSendingTask) )
 370             queue->wakeBits &= ~QS_SENDMESSAGE;
 371       QUEUE_SetWakeBit( senderQ, QS_SMPARAMSFREE );
 372
 373       queue->smResultCurrent = CtrlPtr;
 374       while( senderQ->wakeBits & QS_SMRESULT ) OldYield();
 375
 376       senderQ->SendMessageReturn = 0;
 377       senderQ->smResult = queue->smResultCurrent;
 378       QUEUE_SetWakeBit( senderQ, QS_SMRESULT);
 379
 380       if( (senderQ = (MESSAGEQUEUE*)GlobalLock16( queue->hSendingTask)) )
 381            CtrlPtr = senderQ->smResultInit;
 382     }
 383     queue->InSendMessageHandle = 0;
 384   }
 385 }
 386
 387 /***********************************************************************
 388  *           QUEUE_AddMsg
 389  *
 390  * Add a message to the queue. Return FALSE if queue is full.
 391  */
 392 BOOL32 QUEUE_AddMsg( HQUEUE16 hQueue, MSG16 * msg, DWORD extraInfo )
 393 {
 394     int pos;
 395     MESSAGEQUEUE *msgQueue;
 396
 397     SIGNAL_MaskAsyncEvents( TRUE );
 398
 399     if (!(msgQueue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return FALSE;
 400     pos = msgQueue->nextFreeMessage;
 401
 402       /* Check if queue is full */
 403     if ((pos == msgQueue->nextMessage) && (msgQueue->msgCount > 0))
 404     {
 405         SIGNAL_MaskAsyncEvents( FALSE );
 406         fprintf(stderr,"MSG_AddMsg // queue is full !\n");
 407         return FALSE;
 408     }
 409
 410       /* Store message */
 411     msgQueue->messages[pos].msg = *msg;
 412     msgQueue->messages[pos].extraInfo = extraInfo;
 413     if (pos < msgQueue->queueSize-1) pos++;
 414     else pos = 0;
 415     msgQueue->nextFreeMessage = pos;
 416     msgQueue->msgCount++;
 417
 418     SIGNAL_MaskAsyncEvents( FALSE );
 419
 420     QUEUE_SetWakeBit( msgQueue, QS_POSTMESSAGE );
 421     return TRUE;
 422 }
 423
 424
 425 /***********************************************************************
 426  *           QUEUE_FindMsg
 427  *
 428  * Find a message matching the given parameters. Return -1 if none available.
 429  */
 430 int QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND32 hwnd, int first, int last )
 431 {
 432     int i, pos = msgQueue->nextMessage;
 433
 434     dprintf_msg(stddeb,"QUEUE_FindMsg: hwnd=%04x pos=%d\n", hwnd, pos );
 435
 436     if (!msgQueue->msgCount) return -1;
 437     if (!hwnd && !first && !last) return pos;
 438
 439     for (i = 0; i < msgQueue->msgCount; i++)
 440     {
 441         MSG16 * msg = &msgQueue->messages[pos].msg;
 442
 443         if (!hwnd || (msg->hwnd == hwnd))
 444         {
 445             if (!first && !last) return pos;
 446             if ((msg->message >= first) && (msg->message <= last)) return pos;
 447         }
 448         if (pos < msgQueue->queueSize-1) pos++;
 449         else pos = 0;
 450     }
 451     return -1;
 452 }
 453
 454
 455 /***********************************************************************
 456  *           QUEUE_RemoveMsg
 457  *
 458  * Remove a message from the queue (pos must be a valid position).
 459  */
 460 void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, int pos )
 461 {
 462     SIGNAL_MaskAsyncEvents( TRUE );
 463
 464     if (pos >= msgQueue->nextMessage)
 465     {
 466         for ( ; pos > msgQueue->nextMessage; pos--)
 467             msgQueue->messages[pos] = msgQueue->messages[pos-1];
 468         msgQueue->nextMessage++;
 469         if (msgQueue->nextMessage >= msgQueue->queueSize)
 470             msgQueue->nextMessage = 0;
 471     }
 472     else
 473     {
 474         for ( ; pos < msgQueue->nextFreeMessage; pos++)
 475             msgQueue->messages[pos] = msgQueue->messages[pos+1];
 476         if (msgQueue->nextFreeMessage) msgQueue->nextFreeMessage--;
 477         else msgQueue->nextFreeMessage = msgQueue->queueSize-1;
 478     }
 479     msgQueue->msgCount--;
 480     if (!msgQueue->msgCount) msgQueue->wakeBits &= ~QS_POSTMESSAGE;
 481
 482     SIGNAL_MaskAsyncEvents( FALSE );
 483 }
 484
 485
 486 /***********************************************************************
 487  *           QUEUE_WakeSomeone
 488  *
 489  * Wake a queue upon reception of a hardware event.
 490  */
 491 static void QUEUE_WakeSomeone( UINT32 message )
 492 {
 493     WND*          wndPtr = NULL;
 494     WORD          wakeBit;
 495     HWND32 hwnd;
 496     MESSAGEQUEUE *queue = pCursorQueue;
 497
 498     if( (message >= WM_KEYFIRST) && (message <= WM_KEYLAST) )
 499     {
 500        wakeBit = QS_KEY;
 501        if( pActiveQueue ) queue = pActiveQueue;
 502     }
 503     else
 504     {
 505        wakeBit = (message == WM_MOUSEMOVE) ? QS_MOUSEMOVE : QS_MOUSEBUTTON;
 506        if( (hwnd = GetCapture32()) )
 507          if( (wndPtr = WIN_FindWndPtr( hwnd )) )
 508            queue = (MESSAGEQUEUE *)GlobalLock16( wndPtr->hmemTaskQ );
 509     }
 510
 511     if( (hwnd = GetSysModalWindow16()) )
 512       if( (wndPtr = WIN_FindWndPtr( hwnd )) )
 513         queue = (MESSAGEQUEUE *)GlobalLock16( wndPtr->hmemTaskQ );
 514
 515     if( !queue )
 516     {
 517       queue = GlobalLock16( hFirstQueue );
 518       while( queue )
 519       {
 520         if (queue->wakeMask & wakeBit) break;
 521         queue = GlobalLock16( queue->next );
 522       }
 523       if( !queue )
 524       {
 525         dprintf_msg(stddeb,"WakeSomeone: couldn't find queue\n");
 526         return;
 527       }
 528     }
 529
 530     QUEUE_SetWakeBit( queue, wakeBit );
 531 }
 532
 533
 534 /***********************************************************************
 535  *           hardware_event
 536  *
 537  * Add an event to the system message queue.
 538  * Note: the position is relative to the desktop window.
 539  */
 540 void hardware_event( WORD message, WORD wParam, LONG lParam,
 541                      int xPos, int yPos, DWORD time, DWORD extraInfo )
 542 {
 543     MSG16 *msg;
 544     int pos;
 545
 546     if (!sysMsgQueue) return;
 547     pos = sysMsgQueue->nextFreeMessage;
 548
 549       /* Merge with previous event if possible */
 550
 551     if ((message == WM_MOUSEMOVE) && sysMsgQueue->msgCount)
 552     {
 553         if (pos > 0) pos--;
 554         else pos = sysMsgQueue->queueSize - 1;
 555         msg = &sysMsgQueue->messages[pos].msg;
 556         if ((msg->message == message) && (msg->wParam == wParam))
 557             sysMsgQueue->msgCount--;  /* Merge events */
 558         else
 559             pos = sysMsgQueue->nextFreeMessage;  /* Don't merge */
 560     }
 561
 562       /* Check if queue is full */
 563
 564     if ((pos == sysMsgQueue->nextMessage) && sysMsgQueue->msgCount)
 565     {
 566         /* Queue is full, beep (but not on every mouse motion...) */
 567         if (message != WM_MOUSEMOVE) MessageBeep32(0);
 568         return;
 569     }
 570
 571       /* Store message */
 572
 573     msg = &sysMsgQueue->messages[pos].msg;
 574     msg->hwnd    = 0;
 575     msg->message = message;
 576     msg->wParam  = wParam;
 577     msg->lParam  = lParam;
 578     msg->time    = time;
 579     msg->pt.x    = xPos & 0xffff;
 580     msg->pt.y    = yPos & 0xffff;
 581     sysMsgQueue->messages[pos].extraInfo = extraInfo;
 582     if (pos < sysMsgQueue->queueSize - 1) pos++;
 583     else pos = 0;
 584     sysMsgQueue->nextFreeMessage = pos;
 585     sysMsgQueue->msgCount++;
 586     QUEUE_WakeSomeone( message );
 587 }
 588
 589
 590 /***********************************************************************
 591  *           QUEUE_GetQueueTask
 592  */
 593 HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue )
 594 {
 595     MESSAGEQUEUE *queue = GlobalLock16( hQueue );
 596     return (queue) ? queue->hTask : 0 ;
 597 }
 598
 599
 600 /***********************************************************************
 601  *           QUEUE_IncPaintCount
 602  */
 603 void QUEUE_IncPaintCount( HQUEUE16 hQueue )
 604 {
 605     MESSAGEQUEUE *queue;
 606
 607     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
 608     queue->wPaintCount++;
 609     QUEUE_SetWakeBit( queue, QS_PAINT );
 610 }
 611
 612
 613 /***********************************************************************
 614  *           QUEUE_DecPaintCount
 615  */
 616 void QUEUE_DecPaintCount( HQUEUE16 hQueue )
 617 {
 618     MESSAGEQUEUE *queue;
 619
 620     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
 621     queue->wPaintCount--;
 622     if (!queue->wPaintCount) queue->wakeBits &= ~QS_PAINT;
 623 }
 624
 625
 626 /***********************************************************************
 627  *           QUEUE_IncTimerCount
 628  */
 629 void QUEUE_IncTimerCount( HQUEUE16 hQueue )
 630 {
 631     MESSAGEQUEUE *queue;
 632
 633     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
 634     queue->wTimerCount++;
 635     QUEUE_SetWakeBit( queue, QS_TIMER );
 636 }
 637
 638
 639 /***********************************************************************
 640  *           QUEUE_DecTimerCount
 641  */
 642 void QUEUE_DecTimerCount( HQUEUE16 hQueue )
 643 {
 644     MESSAGEQUEUE *queue;
 645
 646     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
 647     queue->wTimerCount--;
 648     if (!queue->wTimerCount) queue->wakeBits &= ~QS_TIMER;
 649 }
 650
 651
 652 /***********************************************************************
 653  *           PostQuitMessage16   (USER.6)
 654  */
 655 void PostQuitMessage16( INT16 exitCode )
 656 {
 657     PostQuitMessage32( exitCode );
 658 }
 659
 660
 661 /***********************************************************************
 662  *           PostQuitMessage32   (USER32.420)
 663  */
 664 void PostQuitMessage32( INT32 exitCode )
 665 {
 666     MESSAGEQUEUE *queue;
 667
 668     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return;
 669     queue->wPostQMsg = TRUE;
 670     queue->wExitCode = (WORD)exitCode;
 671 }
 672
 673
 674 /***********************************************************************
 675  *           GetWindowTask16   (USER.224)
 676  */
 677 HTASK16 GetWindowTask16( HWND16 hwnd )
 678 {
 679     WND *wndPtr = WIN_FindWndPtr( hwnd );
 680
 681     if (!wndPtr) return 0;
 682     return QUEUE_GetQueueTask( wndPtr->hmemTaskQ );
 683 }
 684
 685 /***********************************************************************
 686  *           GetWindowThreadProcessId   (USER32.312)
 687  */
 688 DWORD GetWindowThreadProcessId( HWND32 hwnd, LPDWORD process )
 689 {
 690     HTASK16 htask;
 691     TDB *tdb;
 692
 693     WND *wndPtr = WIN_FindWndPtr( hwnd );
 694
 695     if (!wndPtr) return 0;
 696     htask=QUEUE_GetQueueTask( wndPtr->hmemTaskQ );
 697     tdb = (TDB*)GlobalLock16(htask);
 698     if (!tdb) return 0;
 699     if (tdb->thdb) {
 700         if (process)
 701                 *process = (DWORD)tdb->thdb->process;
 702         return (DWORD)tdb->thdb;
 703     }
 704     return 0;
 705
 706 }
 707
 708
 709 /***********************************************************************
 710  *           SetMessageQueue16   (USER.266)
 711  */
 712 BOOL16 SetMessageQueue16( INT16 size )
 713 {
 714     return SetMessageQueue32( size );
 715 }
 716
 717
 718 /***********************************************************************
 719  *           SetMessageQueue32   (USER32.493)
 720  */
 721 BOOL32 SetMessageQueue32( INT32 size )
 722 {
 723     HQUEUE16 hQueue, hNewQueue;
 724     MESSAGEQUEUE *queuePtr;
 725
 726     dprintf_msg(stddeb,"SetMessageQueue: task %04x size %i\n", GetCurrentTask(), size);
 727
 728     if ((size > MAX_QUEUE_SIZE) || (size <= 0)) return TRUE;
 729
 730     if( !(hNewQueue = QUEUE_CreateMsgQueue( size )))
 731     {
 732         dprintf_msg(stddeb,"SetMessageQueue: failed!\n");
 733         return FALSE;
 734     }
 735     queuePtr = (MESSAGEQUEUE *)GlobalLock16( hNewQueue );
 736
 737     SIGNAL_MaskAsyncEvents( TRUE );
 738
 739     /* Copy data and free the old message queue */
 740     if ((hQueue = GetTaskQueue(0)) != 0)
 741     {
 742        MESSAGEQUEUE *oldQ = (MESSAGEQUEUE *)GlobalLock16( hQueue );
 743        memcpy( &queuePtr->reserved2, &oldQ->reserved2,
 744                         (int)oldQ->messages - (int)(&oldQ->reserved2) );
 745        HOOK_ResetQueueHooks( hNewQueue );
 746        if( WIN_GetDesktop()->hmemTaskQ == hQueue )
 747            WIN_GetDesktop()->hmemTaskQ = hNewQueue;
 748        WIN_ResetQueueWindows( WIN_GetDesktop()->child, hQueue, hNewQueue );
 749        QUEUE_DeleteMsgQueue( hQueue );
 750     }
 751
 752     /* Link new queue into list */
 753     queuePtr->hTask = GetCurrentTask();
 754     queuePtr->next  = hFirstQueue;
 755     hFirstQueue = hNewQueue;
 756
 757     if( !queuePtr->next ) pCursorQueue = queuePtr;
 758     SetTaskQueue( 0, hNewQueue );
 759
 760     SIGNAL_MaskAsyncEvents( FALSE );
 761     return TRUE;
 762 }
 763
 764
 765 /***********************************************************************
 766  *           GetQueueStatus16   (USER.334)
 767  */
 768 DWORD GetQueueStatus16( UINT16 flags )
 769 {
 770     MESSAGEQUEUE *queue;
 771     DWORD ret;
 772
 773     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
 774     ret = MAKELONG( queue->changeBits, queue->wakeBits );
 775     queue->changeBits = 0;
 776     return ret & MAKELONG( flags, flags );
 777 }
 778
 779
 780 /***********************************************************************
 781  *           GetInputState16   (USER.335)
 782  */
 783 BOOL16 GetInputState16(void)
 784 {
 785     return GetInputState32();
 786 }
 787
 788
 789 /***********************************************************************
 790  *           GetInputState32   (USER32.243)
 791  */
 792 BOOL32 GetInputState32(void)
 793 {
 794     MESSAGEQUEUE *queue;
 795
 796     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) )))
 797         return FALSE;
 798     return queue->wakeBits & (QS_KEY | QS_MOUSEBUTTON);
 799 }
 800
 801
 802 /***********************************************************************
 803  *           GetMessagePos   (USER.119) (USER32.271)
 804  */
 805 DWORD GetMessagePos(void)
 806 {
 807     MESSAGEQUEUE *queue;
 808
 809     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
 810     return queue->GetMessagePosVal;
 811 }
 812
 813
 814 /***********************************************************************
 815  *           GetMessageTime   (USER.120) (USER32.272)
 816  */
 817 LONG GetMessageTime(void)
 818 {
 819     MESSAGEQUEUE *queue;
 820
 821     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
 822     return queue->GetMessageTimeVal;
 823 }
 824
 825
 826 /***********************************************************************
 827  *           GetMessageExtraInfo   (USER.288) (USER32.270)
 828  */
 829 LONG GetMessageExtraInfo(void)
 830 {
 831     MESSAGEQUEUE *queue;
 832
 833     if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
 834     return queue->GetMessageExtraInfoVal;
 835 }