windows/message.c

   1 /*
   2  * Message queues related functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 /*
   8  * This code assumes that there is only one Windows task (hence
   9  * one message queue).
  10  */
  11
  12 static char Copyright[] = "Copyright  Alexandre Julliard, 1993";
  13
  14 #include <stdlib.h>
  15 #include <sys/time.h>
  16 #include <sys/types.h>
  17
  18 #include "message.h"
  19 #include "win.h"
  20 #include "wineopts.h"
  21 #include "sysmetrics.h"
  22 #include "hook.h"
  23
  24 #define HWND_BROADCAST  ((HWND)0xffff)
  25
  26 #define MAX_QUEUE_SIZE   120  /* Max. size of a message queue */
  27
  28
  29 extern BOOL TIMER_CheckTimer( LONG *next, MSG *msg,
  30                               HWND hwnd, BOOL remove );  /* timer.c */
  31 extern void EVENT_ProcessEvent( XEvent *event );  /* event.c */
  32 extern void WINPOS_ChangeActiveWindow( HWND hwnd, BOOL mouseMsg ); /*winpos.c*/
  33 extern void WIN_SendParentNotify( HWND hwnd, WORD event,
  34                                   LONG lParam );  /* win.c */
  35
  36 extern Display * display;
  37
  38   /* System message queue (for hardware events) */
  39 static HANDLE hmemSysMsgQueue = 0;
  40 static MESSAGEQUEUE * sysMsgQueue = NULL;
  41
  42   /* Application message queue (should be a list, one queue per task) */
  43 static HANDLE hmemAppMsgQueue = 0;
  44 static MESSAGEQUEUE * appMsgQueue = NULL;
  45
  46   /* Double-click time */
  47 static int doubleClickSpeed = 452;
  48
  49
  50 /***********************************************************************
  51  *           MSG_CreateMsgQueue
  52  *
  53  * Create a message queue.
  54  */
  55 static HANDLE MSG_CreateMsgQueue( int size )
  56 {
  57     HANDLE hQueue;
  58     MESSAGEQUEUE * msgQueue;
  59     int queueSize;
  60
  61     queueSize = sizeof(MESSAGEQUEUE) + size * sizeof(QMSG);
  62     if (!(hQueue = GlobalAlloc( GMEM_FIXED, queueSize ))) return 0;
  63     msgQueue = (MESSAGEQUEUE *) GlobalLock( hQueue );
  64     msgQueue->next = 0;
  65     msgQueue->hTask = 0;
  66     msgQueue->msgSize = sizeof(QMSG);
  67     msgQueue->msgCount = 0;
  68     msgQueue->nextMessage = 0;
  69     msgQueue->nextFreeMessage = 0;
  70     msgQueue->queueSize = size;
  71     msgQueue->GetMessageTimeVal = 0;
  72     msgQueue->GetMessagePosVal = 0;
  73     msgQueue->GetMessageExtraInfoVal = 0;
  74     msgQueue->lParam = 0;
  75     msgQueue->wParam = 0;
  76     msgQueue->msg = 0;
  77     msgQueue->hWnd = 0;
  78     msgQueue->wPostQMsg = 0;
  79     msgQueue->wExitCode = 0;
  80     msgQueue->InSendMessageHandle = 0;
  81     msgQueue->wPaintCount = 0;
  82     msgQueue->wTimerCount = 0;
  83     msgQueue->tempStatus = 0;
  84     msgQueue->status = 0;
  85     GlobalUnlock( hQueue );
  86     return hQueue;
  87 }
  88
  89
  90 /***********************************************************************
  91  *           MSG_CreateSysMsgQueue
  92  *
  93  * Create the system message queue, and set the double-click speed.
  94  * Must be called only once.
  95  */
  96 BOOL MSG_CreateSysMsgQueue( int size )
  97 {
  98     if (size > MAX_QUEUE_SIZE) size = MAX_QUEUE_SIZE;
  99     else if (size <= 0) size = 1;
 100     if (!(hmemSysMsgQueue = MSG_CreateMsgQueue( size ))) return FALSE;
 101     sysMsgQueue = (MESSAGEQUEUE *) GlobalLock( hmemSysMsgQueue );
 102     doubleClickSpeed = GetProfileInt( "windows", "DoubleClickSpeed", 452 );
 103     return TRUE;
 104 }
 105
 106
 107 /***********************************************************************
 108  *           MSG_AddMsg
 109  *
 110  * Add a message to the queue. Return FALSE if queue is full.
 111  */
 112 static int MSG_AddMsg( MESSAGEQUEUE * msgQueue, MSG * msg, DWORD extraInfo )
 113 {
 114     int pos;
 115
 116     if (!msgQueue) return FALSE;
 117     pos = msgQueue->nextFreeMessage;
 118
 119       /* Check if queue is full */
 120     if ((pos == msgQueue->nextMessage) && (msgQueue->msgCount > 0)) {
 121                 printf("MSG_AddMsg // queue is full !\n");
 122                 return FALSE;
 123                 }
 124
 125       /* Store message */
 126     msgQueue->messages[pos].msg = *msg;
 127     msgQueue->messages[pos].extraInfo = extraInfo;
 128     if (pos < msgQueue->queueSize-1) pos++;
 129     else pos = 0;
 130     msgQueue->nextFreeMessage = pos;
 131     msgQueue->msgCount++;
 132     msgQueue->status |= QS_POSTMESSAGE;
 133     msgQueue->tempStatus |= QS_POSTMESSAGE;
 134     return TRUE;
 135 }
 136
 137
 138 /***********************************************************************
 139  *           MSG_FindMsg
 140  *
 141  * Find a message matching the given parameters. Return -1 if none available.
 142  */
 143 static int MSG_FindMsg(MESSAGEQUEUE * msgQueue, HWND hwnd, int first, int last)
 144 {
 145     int i, pos = msgQueue->nextMessage;
 146
 147     if (!msgQueue->msgCount) return -1;
 148     if (!hwnd && !first && !last) return pos;
 149
 150     for (i = 0; i < msgQueue->msgCount; i++)
 151     {
 152         MSG * msg = &msgQueue->messages[pos].msg;
 153
 154         if (!hwnd || (msg->hwnd == hwnd))
 155         {
 156             if (!first && !last) return pos;
 157             if ((msg->message >= first) && (msg->message <= last)) return pos;
 158         }
 159         if (pos < msgQueue->queueSize-1) pos++;
 160         else pos = 0;
 161     }
 162     return -1;
 163 }
 164
 165
 166 /***********************************************************************
 167  *           MSG_RemoveMsg
 168  *
 169  * Remove a message from the queue (pos must be a valid position).
 170  */
 171 static void MSG_RemoveMsg( MESSAGEQUEUE * msgQueue, int pos )
 172 {
 173     if (pos >= msgQueue->nextMessage)
 174     {
 175         for ( ; pos > msgQueue->nextMessage; pos--)
 176             msgQueue->messages[pos] = msgQueue->messages[pos-1];
 177         msgQueue->nextMessage++;
 178         if (msgQueue->nextMessage >= msgQueue->queueSize)
 179             msgQueue->nextMessage = 0;
 180     }
 181     else
 182     {
 183         for ( ; pos < msgQueue->nextFreeMessage; pos++)
 184             msgQueue->messages[pos] = msgQueue->messages[pos+1];
 185         if (msgQueue->nextFreeMessage) msgQueue->nextFreeMessage--;
 186         else msgQueue->nextFreeMessage = msgQueue->queueSize-1;
 187     }
 188     msgQueue->msgCount--;
 189     if (!msgQueue->msgCount) msgQueue->status &= ~QS_POSTMESSAGE;
 190     msgQueue->tempStatus = 0;
 191 }
 192
 193
 194 /***********************************************************************
 195  *           MSG_TranslateMouseMsg
 196  *
 197  * Translate an mouse hardware event into a real mouse message.
 198  * Return value indicates whether the translated message must be passed
 199  * to the user.
 200  * Actions performed:
 201  * - Translate button-down messages in double-clicks.
 202  * - Send the WM_NCHITTEST message to find where the cursor is.
 203  * - Activate the window if needed.
 204  * - Translate the message into a non-client message, or translate
 205  *   the coordinates to client coordinates.
 206  * - Send the WM_SETCURSOR message.
 207  */
 208 static BOOL MSG_TranslateMouseMsg( MSG *msg, BOOL remove )
 209 {
 210     BOOL eatMsg = FALSE;
 211     static DWORD lastClickTime = 0;
 212     static WORD  lastClickMsg = 0;
 213     static POINT lastClickPos = { 0, 0 };
 214
 215     BOOL mouseClick = ((msg->message == WM_LBUTTONDOWN) ||
 216                        (msg->message == WM_RBUTTONDOWN) ||
 217                        (msg->message == WM_MBUTTONDOWN));
 218
 219       /* Send the WM_NCHITTEST message */
 220
 221     LONG hittest_result = SendMessage( msg->hwnd, WM_NCHITTEST, 0,
 222                                        MAKELONG( msg->pt.x, msg->pt.y ) );
 223
 224       /* Send the WM_PARENTNOTIFY message */
 225
 226     if (mouseClick) WIN_SendParentNotify( msg->hwnd, msg->message,
 227                                           MAKELONG( msg->pt.x, msg->pt.y ) );
 228
 229       /* Activate the window if needed */
 230
 231     if (mouseClick)
 232     {
 233         HWND parent, hwndTop = msg->hwnd;
 234         while ((parent = GetParent(hwndTop)) != 0) hwndTop = parent;
 235         if (hwndTop != GetActiveWindow())
 236         {
 237             LONG ret = SendMessage( msg->hwnd, WM_MOUSEACTIVATE, hwndTop,
 238                                     MAKELONG( hittest_result, msg->message ) );
 239             if ((ret == MA_ACTIVATEANDEAT) || (ret == MA_NOACTIVATEANDEAT))
 240                 eatMsg = TRUE;
 241             if ((ret == MA_ACTIVATE) || (ret == MA_ACTIVATEANDEAT))
 242             {
 243                 SetWindowPos( hwndTop, HWND_TOP, 0, 0, 0, 0,
 244                               SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE );
 245                 WINPOS_ChangeActiveWindow( hwndTop, TRUE );
 246             }
 247         }
 248     }
 249
 250       /* Send the WM_SETCURSOR message */
 251
 252     SendMessage( msg->hwnd, WM_SETCURSOR, msg->hwnd,
 253                  MAKELONG( hittest_result, msg->message ));
 254     if (eatMsg) return FALSE;
 255
 256       /* Check for double-click */
 257
 258     if (mouseClick)
 259     {
 260         BOOL dbl_click = FALSE;
 261
 262         if ((msg->message == lastClickMsg) &&
 263             (msg->time - lastClickTime < doubleClickSpeed) &&
 264             (abs(msg->pt.x - lastClickPos.x) < SYSMETRICS_CXDOUBLECLK/2) &&
 265             (abs(msg->pt.y - lastClickPos.y) < SYSMETRICS_CYDOUBLECLK/2))
 266             dbl_click = TRUE;
 267
 268         if (dbl_click && (hittest_result == HTCLIENT))
 269         {
 270             /* Check whether window wants the double click message. */
 271             WND * wndPtr = WIN_FindWndPtr( msg->hwnd );
 272             if (!wndPtr || !(wndPtr->flags & WIN_DOUBLE_CLICKS))
 273                 dbl_click = FALSE;
 274         }
 275
 276         if (dbl_click) switch(msg->message)
 277         {
 278             case WM_LBUTTONDOWN: msg->message = WM_LBUTTONDBLCLK; break;
 279             case WM_RBUTTONDOWN: msg->message = WM_RBUTTONDBLCLK; break;
 280             case WM_MBUTTONDOWN: msg->message = WM_MBUTTONDBLCLK; break;
 281         }
 282
 283         if (remove)
 284         {
 285             lastClickTime = msg->time;
 286             lastClickMsg  = msg->message;
 287             lastClickPos  = msg->pt;
 288         }
 289     }
 290
 291       /* Build the translated message */
 292
 293     msg->lParam = MAKELONG( msg->pt.x, msg->pt.y );
 294     if (hittest_result == HTCLIENT)
 295     {
 296         ScreenToClient( msg->hwnd, (LPPOINT)&msg->lParam );
 297     }
 298     else
 299     {
 300         msg->wParam = hittest_result;
 301         msg->message += WM_NCLBUTTONDOWN - WM_LBUTTONDOWN;
 302     }
 303
 304     return TRUE;
 305 }
 306
 307
 308 /**********************************************************************
 309  *              SetDoubleClickTime  (USER.20)
 310  */
 311 void SetDoubleClickTime( WORD interval )
 312 {
 313     if (interval == 0)
 314         doubleClickSpeed = 500;
 315     else
 316         doubleClickSpeed = interval;
 317 }
 318
 319
 320 /**********************************************************************
 321  *              GetDoubleClickTime  (USER.21)
 322  */
 323 WORD GetDoubleClickTime()
 324 {
 325         return (WORD)doubleClickSpeed;
 326 }
 327
 328
 329 /***********************************************************************
 330  *           MSG_IncPaintCount
 331  */
 332 void MSG_IncPaintCount( HANDLE hQueue )
 333 {
 334     if (hQueue != hmemAppMsgQueue) return;
 335     appMsgQueue->wPaintCount++;
 336     appMsgQueue->status |= QS_PAINT;
 337     appMsgQueue->tempStatus |= QS_PAINT;
 338 }
 339
 340
 341 /***********************************************************************
 342  *           MSG_DecPaintCount
 343  */
 344 void MSG_DecPaintCount( HANDLE hQueue )
 345 {
 346     if (hQueue != hmemAppMsgQueue) return;
 347     appMsgQueue->wPaintCount--;
 348     if (!appMsgQueue->wPaintCount) appMsgQueue->status &= ~QS_PAINT;
 349 }
 350
 351
 352 /***********************************************************************
 353  *           MSG_IncTimerCount
 354  */
 355 void MSG_IncTimerCount( HANDLE hQueue )
 356 {
 357     if (hQueue != hmemAppMsgQueue) return;
 358     appMsgQueue->wTimerCount++;
 359     appMsgQueue->status |= QS_TIMER;
 360     appMsgQueue->tempStatus |= QS_TIMER;
 361 }
 362
 363
 364 /***********************************************************************
 365  *           MSG_DecTimerCount
 366  */
 367 void MSG_DecTimerCount( HANDLE hQueue )
 368 {
 369     if (hQueue != hmemAppMsgQueue) return;
 370     appMsgQueue->wTimerCount--;
 371     if (!appMsgQueue->wTimerCount) appMsgQueue->status &= ~QS_TIMER;
 372 }
 373
 374
 375 /***********************************************************************
 376  *           hardware_event
 377  *
 378  * Add an event to the system message queue.
 379  * Note: the position is relative to the desktop window.
 380  */
 381 void hardware_event( WORD message, WORD wParam, LONG lParam,
 382                      int xPos, int yPos, DWORD time, DWORD extraInfo )
 383 {
 384     MSG msg;
 385
 386     msg.hwnd    = 0;
 387     msg.message = message;
 388     msg.wParam  = wParam;
 389     msg.lParam  = lParam;
 390     msg.time    = time;
 391     msg.pt.x    = xPos & 0xffff;
 392     msg.pt.y    = yPos & 0xffff;
 393
 394       /* Determine the hwnd for this message */
 395       /* Maybe this should be done in GetMessage() */
 396
 397     if (msg.hwnd = ICON_findIconFromPoint(msg.pt)) {
 398        SendMessage( msg.hwnd, WM_SYSCOMMAND, SC_RESTORE, *(LONG*)&msg.pt );
 399        return;
 400     }
 401
 402
 403     if ((message >= WM_MOUSEFIRST) && (message <= WM_MOUSELAST))
 404     {
 405           /* Mouse event */
 406         if (GetCapture()) msg.hwnd = GetCapture();
 407         else msg.hwnd = WindowFromPoint( msg.pt );
 408     }
 409     else if ((message >= WM_KEYFIRST) && (message <= WM_KEYLAST))
 410     {
 411           /* Keyboard event */
 412         msg.hwnd = GetFocus();
 413         if (!msg.hwnd && ((message==WM_KEYDOWN) || (message==WM_SYSKEYDOWN)))
 414             MessageBeep(0);  /* Beep on key press if no focus */
 415     }
 416     if (!msg.hwnd) return;  /* No window for this message */
 417
 418       /* Merge with previous event if possible */
 419
 420     if (sysMsgQueue->msgCount && (message == WM_MOUSEMOVE))
 421     {
 422         MSG *prevMsg = &sysMsgQueue->messages[sysMsgQueue->nextMessage].msg;
 423         if ((prevMsg->message == message) && (prevMsg->wParam == wParam))
 424         {
 425             *prevMsg = msg;  /* Overwrite previous message */
 426             return;
 427         }
 428     }
 429
 430     if (!MSG_AddMsg( sysMsgQueue, &msg, extraInfo ))
 431         printf( "hardware_event: Queue is full\n" );
 432 }
 433
 434
 435 /***********************************************************************
 436  *           MSG_GetHardwareMessage
 437  *
 438  * Like GetMessage(), but only return mouse and keyboard events.
 439  * Used internally for window moving and resizing. Mouse messages
 440  * are not translated.
 441  */
 442 BOOL MSG_GetHardwareMessage( LPMSG msg )
 443 {
 444     int pos;
 445     XEvent event;
 446
 447     while(1)
 448     {
 449         if ((pos = MSG_FindMsg( sysMsgQueue, 0, 0, 0 )) != -1)
 450         {
 451             *msg = sysMsgQueue->messages[pos].msg;
 452             MSG_RemoveMsg( sysMsgQueue, pos );
 453             break;
 454         }
 455         XNextEvent( display, &event );
 456         EVENT_ProcessEvent( &event );
 457     }
 458     return TRUE;
 459 }
 460
 461
 462 /***********************************************************************
 463  *           SetTaskQueue  (KERNEL.34)
 464  */
 465 WORD SetTaskQueue( HANDLE hTask, HANDLE hQueue )
 466 {
 467     HANDLE prev = hmemAppMsgQueue;
 468     hmemAppMsgQueue = hQueue;
 469     return prev;
 470 }
 471
 472
 473 /***********************************************************************
 474  *           GetTaskQueue  (KERNEL.35)
 475  */
 476 WORD GetTaskQueue( HANDLE hTask )
 477 {
 478     return hmemAppMsgQueue;
 479 }
 480
 481
 482 /***********************************************************************
 483  *           SetMessageQueue  (USER.266)
 484  */
 485 BOOL SetMessageQueue( int size )
 486 {
 487     HANDLE hQueue;
 488
 489     if ((size > MAX_QUEUE_SIZE) || (size <= 0)) return TRUE;
 490
 491       /* Free the old message queue */
 492     if ((hQueue = GetTaskQueue(0)) != 0)
 493     {
 494         GlobalUnlock( hQueue );
 495         GlobalFree( hQueue );
 496     }
 497
 498     if (!(hQueue = MSG_CreateMsgQueue( size ))) return FALSE;
 499     SetTaskQueue( 0, hQueue );
 500     appMsgQueue = (MESSAGEQUEUE *)GlobalLock( hQueue );
 501     return TRUE;
 502 }
 503
 504
 505 /***********************************************************************
 506  *           PostQuitMessage   (USER.6)
 507  */
 508 void PostQuitMessage( int exitCode )
 509 {
 510     if (!appMsgQueue) return;
 511     appMsgQueue->wPostQMsg = TRUE;
 512     appMsgQueue->wExitCode = exitCode;
 513 }
 514
 515
 516 /***********************************************************************
 517  *           GetQueueStatus   (USER.334)
 518  */
 519 DWORD GetQueueStatus( int flags )
 520 {
 521     unsigned long ret = (appMsgQueue->status << 16) | appMsgQueue->tempStatus;
 522     appMsgQueue->tempStatus = 0;
 523     return ret & ((flags << 16) | flags);
 524 }
 525
 526
 527 /***********************************************************************
 528  *           GetInputState   (USER.335)
 529  */
 530 BOOL GetInputState()
 531 {
 532     return appMsgQueue->status & (QS_KEY | QS_MOUSEBUTTON);
 533 }
 534
 535
 536 /***********************************************************************
 537  *           MSG_Synchronize
 538  *
 539  * Synchronize with the X server. Should not be used too often.
 540  */
 541 void MSG_Synchronize()
 542 {
 543     XEvent event;
 544
 545     XSync( display, False );
 546     while (XPending( display ))
 547     {
 548         XNextEvent( display, &event );
 549         EVENT_ProcessEvent( &event );
 550     }
 551 }
 552
 553
 554 /***********************************************************************
 555  *           MSG_PeekMessage
 556  */
 557 static BOOL MSG_PeekMessage( MESSAGEQUEUE * msgQueue, LPMSG msg, HWND hwnd,
 558                              WORD first, WORD last, WORD flags, BOOL peek )
 559 {
 560     int pos, mask;
 561     LONG nextExp;  /* Next timer expiration time */
 562     XEvent event;
 563
 564     if (first || last)
 565     {
 566         mask = QS_POSTMESSAGE;  /* Always selectioned */
 567         if ((first <= WM_KEYLAST) && (last >= WM_KEYFIRST)) mask |= QS_KEY;
 568         if ((first <= WM_MOUSELAST) && (last >= WM_MOUSEFIRST)) mask |= QS_MOUSE;
 569         if ((first <= WM_TIMER) && (last >= WM_TIMER)) mask |= QS_TIMER;
 570         if ((first <= WM_SYSTIMER) && (last >= WM_SYSTIMER)) mask |= QS_TIMER;
 571         if ((first <= WM_PAINT) && (last >= WM_PAINT)) mask |= QS_PAINT;
 572     }
 573     else mask = QS_MOUSE | QS_KEY | QS_POSTMESSAGE | QS_TIMER | QS_PAINT;
 574
 575     while (XPending( display ))
 576     {
 577         XNextEvent( display, &event );
 578         EVENT_ProcessEvent( &event );
 579     }
 580
 581     while(1)
 582     {
 583           /* First handle a WM_QUIT message */
 584         if (msgQueue->wPostQMsg)
 585         {
 586             msg->hwnd    = hwnd;
 587             msg->message = WM_QUIT;
 588             msg->wParam  = msgQueue->wExitCode;
 589             msg->lParam  = 0;
 590             break;
 591         }
 592
 593           /* Then handle a message put by SendMessage() */
 594         if (msgQueue->status & QS_SENDMESSAGE)
 595         {
 596             if (!hwnd || (msgQueue->hWnd == hwnd))
 597             {
 598                 if ((!first && !last) ||
 599                     ((msgQueue->msg >= first) && (msgQueue->msg <= last)))
 600                 {
 601                     msg->hwnd    = msgQueue->hWnd;
 602                     msg->message = msgQueue->msg;
 603                     msg->wParam  = msgQueue->wParam;
 604                     msg->lParam  = msgQueue->lParam;
 605                     if (flags & PM_REMOVE) msgQueue->status &= ~QS_SENDMESSAGE;
 606                     break;
 607                 }
 608             }
 609         }
 610
 611           /* Now find a normal message */
 612         pos = MSG_FindMsg( msgQueue, hwnd, first, last );
 613         if (pos != -1)
 614         {
 615             QMSG *qmsg = &msgQueue->messages[pos];
 616             *msg = qmsg->msg;
 617             msgQueue->GetMessageTimeVal      = msg->time;
 618             msgQueue->GetMessagePosVal       = *(DWORD *)&msg->pt;
 619             msgQueue->GetMessageExtraInfoVal = qmsg->extraInfo;
 620
 621             if (flags & PM_REMOVE) MSG_RemoveMsg( msgQueue, pos );
 622             break;
 623         }
 624
 625           /* Now find a hardware event */
 626         pos = MSG_FindMsg( sysMsgQueue, hwnd, first, last );
 627         if (pos != -1)
 628         {
 629             QMSG *qmsg = &sysMsgQueue->messages[pos];
 630             *msg = qmsg->msg;
 631             msgQueue->GetMessageTimeVal      = msg->time;
 632             msgQueue->GetMessagePosVal       = *(DWORD *)&msg->pt;
 633             msgQueue->GetMessageExtraInfoVal = qmsg->extraInfo;
 634
 635             if ((msg->message >= WM_MOUSEFIRST) &&
 636                 (msg->message <= WM_MOUSELAST))
 637                 if (!MSG_TranslateMouseMsg( msg, flags & PM_REMOVE ))
 638                 {
 639                     MSG_RemoveMsg( sysMsgQueue, pos );
 640                     continue;
 641                 }
 642             if (flags & PM_REMOVE) MSG_RemoveMsg( sysMsgQueue, pos );
 643             break;
 644         }
 645
 646           /* Now find a WM_PAINT message */
 647         if ((msgQueue->status & QS_PAINT) && (mask & QS_PAINT))
 648         {
 649             msg->hwnd = WIN_FindWinToRepaint( hwnd );
 650             msg->message = WM_PAINT;
 651             msg->wParam = 0;
 652             msg->lParam = 0;
 653             if (msg->hwnd != 0) break;
 654         }
 655
 656           /* Finally handle WM_TIMER messages */
 657         if ((msgQueue->status & QS_TIMER) && (mask & QS_TIMER))
 658         {
 659             if (TIMER_CheckTimer( &nextExp, msg, hwnd, flags & PM_REMOVE ))
 660                 break;  /* Got a timer msg */
 661         }
 662         else nextExp = -1;  /* No timeout needed */
 663
 664           /* Wait until something happens */
 665         if (peek) return FALSE;
 666         if (!XPending( display ) && (nextExp != -1))
 667         {
 668             fd_set read_set;
 669             struct timeval timeout;
 670             int fd = ConnectionNumber(display);
 671             FD_ZERO( &read_set );
 672             FD_SET( fd, &read_set );
 673             timeout.tv_sec = nextExp / 1000;
 674             timeout.tv_usec = (nextExp % 1000) * 1000;
 675             if (select( fd+1, &read_set, NULL, NULL, &timeout ) != 1)
 676                 continue;  /* On timeout or error, restart from the start */
 677         }
 678         XNextEvent( display, &event );
 679         EVENT_ProcessEvent( &event );
 680     }
 681
 682       /* We got a message */
 683     if (peek) return TRUE;
 684     else return (msg->message != WM_QUIT);
 685 }
 686
 687
 688 /***********************************************************************
 689  *           MSG_InternalGetMessage
 690  *
 691  * GetMessage() function for internal use. Behave like GetMessage(),
 692  * but also call message filters and optionally send WM_ENTERIDLE messages.
 693  * 'hwnd' must be the handle of the dialog or menu window.
 694  * 'code' is the message filter value (MSGF_??? codes).
 695  */
 696 BOOL MSG_InternalGetMessage( LPMSG msg, HWND hwnd, HWND hwndOwner, short code,
 697                              WORD flags, BOOL sendIdle )
 698 {
 699     for (;;)
 700     {
 701         if (sendIdle)
 702         {
 703             if (!MSG_PeekMessage( appMsgQueue, msg, 0, 0, 0, flags, TRUE ))
 704             {
 705                   /* No message present -> send ENTERIDLE and wait */
 706                 SendMessage( hwndOwner, WM_ENTERIDLE, code, (LPARAM)hwnd );
 707                 MSG_PeekMessage( appMsgQueue, msg, 0, 0, 0, flags, FALSE );
 708             }
 709         }
 710         else  /* Always wait for a message */
 711             MSG_PeekMessage( appMsgQueue, msg, 0, 0, 0, flags, FALSE );
 712
 713         if (!CallMsgFilter( msg, code )) return (msg->message != WM_QUIT);
 714
 715           /* Message filtered -> remove it from the queue */
 716           /* if it's still there. */
 717         if (!(flags & PM_REMOVE))
 718             MSG_PeekMessage( appMsgQueue, msg, 0, 0, 0, PM_REMOVE, TRUE );
 719     }
 720 }
 721
 722
 723 /***********************************************************************
 724  *           PeekMessage   (USER.109)
 725  */
 726 BOOL PeekMessage( LPMSG msg, HWND hwnd, WORD first, WORD last, WORD flags )
 727 {
 728     return MSG_PeekMessage( appMsgQueue, msg, hwnd, first, last, flags, TRUE );
 729 }
 730
 731
 732 /***********************************************************************
 733  *           GetMessage   (USER.108)
 734  */
 735 BOOL GetMessage( LPMSG msg, HWND hwnd, WORD first, WORD last )
 736 {
 737     MSG_PeekMessage( appMsgQueue, msg, hwnd, first, last, PM_REMOVE, FALSE );
 738     CALL_SYSTEM_HOOK( WH_GETMESSAGE, 0, 0, (LPARAM)msg );
 739     CALL_TASK_HOOK( WH_GETMESSAGE, 0, 0, (LPARAM)msg );
 740     return (msg->message != WM_QUIT);
 741 }
 742
 743
 744
 745 /***********************************************************************
 746  *           PostMessage   (USER.110)
 747  */
 748 BOOL PostMessage( HWND hwnd, WORD message, WORD wParam, LONG lParam )
 749 {
 750     MSG         msg;
 751     WND         *wndPtr;
 752
 753         if (hwnd == HWND_BROADCAST) {
 754 #ifdef DEBUG_MSG
 755                 printf("PostMessage // HWND_BROADCAST !\n");
 756 #endif
 757             hwnd = GetTopWindow(GetDesktopWindow());
 758             while (hwnd) {
 759                 if (!(wndPtr = WIN_FindWndPtr(hwnd))) break;
 760                         if (wndPtr->dwStyle & WS_POPUP || wndPtr->dwStyle & WS_CAPTION) {
 761 #ifdef DEBUG_MSG
 762                                 printf("BROADCAST Message to hWnd=%04X m=%04X w=%04X l=%08X !\n",
 763                                                         hwnd, message, wParam, lParam);
 764 #endif
 765                                 PostMessage(hwnd, message, wParam, lParam);
 766                                 }
 767 /*                              {
 768                                 char    str[128];
 769                                 GetWindowText(hwnd, str, sizeof(str));
 770                                 printf("BROADCAST GetWindowText()='%s' !\n", str);
 771                                 }*/
 772                         hwnd = wndPtr->hwndNext;
 773                         }
 774 #ifdef DEBUG_MSG
 775                 printf("PostMessage // End of HWND_BROADCAST !\n");
 776 #endif
 777                 return TRUE;
 778                 }
 779
 780         wndPtr = WIN_FindWndPtr( hwnd );
 781     if (!wndPtr || !wndPtr->hmemTaskQ) return FALSE;
 782     msg.hwnd    = hwnd;
 783     msg.message = message;
 784     msg.wParam  = wParam;
 785     msg.lParam  = lParam;
 786     msg.time    = GetTickCount();
 787     msg.pt.x    = 0;
 788     msg.pt.y    = 0;
 789
 790     return MSG_AddMsg( appMsgQueue, &msg, 0 );
 791 }
 792
 793
 794 /***********************************************************************
 795  *           SendMessage   (USER.111)
 796  */
 797 LONG SendMessage( HWND hwnd, WORD msg, WORD wParam, LONG lParam )
 798 {
 799     WND * wndPtr;
 800
 801     wndPtr = WIN_FindWndPtr( hwnd );
 802     if (!wndPtr) return 0;
 803     return CallWindowProc( wndPtr->lpfnWndProc, hwnd, msg, wParam, lParam );
 804 }
 805
 806
 807 /***********************************************************************
 808  *           WaitMessage    (USER.112)
 809  */
 810 void WaitMessage( void )
 811 {
 812     MSG msg;
 813     LONG nextExp;  /* Next timer expiration time */
 814     XEvent event;
 815
 816     while (XPending( display ))
 817     {
 818         XNextEvent( display, &event );
 819         EVENT_ProcessEvent( &event );
 820     }
 821
 822     while(1)
 823     {
 824         if ((appMsgQueue->wPostQMsg) ||
 825             (appMsgQueue->status & (QS_SENDMESSAGE | QS_PAINT)) ||
 826             (appMsgQueue->msgCount) || (sysMsgQueue->msgCount) )
 827             break;
 828         if ((appMsgQueue->status & QS_TIMER) &&
 829             TIMER_CheckTimer( &nextExp, &msg, 0, FALSE))
 830             break;
 831         else
 832             nextExp=-1;
 833
 834         if (!XPending( display ) && (nextExp != -1))
 835         {
 836             fd_set read_set;
 837             struct timeval timeout;
 838             int fd = ConnectionNumber(display);
 839             FD_ZERO( &read_set );
 840             FD_SET( fd, &read_set );
 841             timeout.tv_sec = nextExp / 1000;
 842             timeout.tv_usec = (nextExp % 1000) * 1000;
 843             if (select( fd+1, &read_set, NULL, NULL, &timeout ) != 1)
 844                 continue;  /* On timeout or error, restart from the start */
 845         }
 846         XNextEvent( display, &event );
 847         EVENT_ProcessEvent( &event );
 848     }
 849 }
 850
 851
 852 /***********************************************************************
 853  *           TranslateMessage   (USER.113)
 854  */
 855 BOOL TranslateMessage( LPMSG msg )
 856 {
 857     int message = msg->message;
 858
 859     if ((message == WM_KEYDOWN) || (message == WM_KEYUP) ||
 860         (message == WM_SYSKEYDOWN) || (message == WM_SYSKEYUP))
 861     {
 862 #ifdef DEBUG_MSG
 863         printf( "Translating key message\n" );
 864 #endif
 865         return TRUE;
 866     }
 867     return FALSE;
 868 }
 869
 870
 871 /***********************************************************************
 872  *           DispatchMessage   (USER.114)
 873  */
 874 LONG DispatchMessage( LPMSG msg )
 875 {
 876     WND * wndPtr;
 877     LONG retval;
 878     int painting;
 879
 880 #ifdef DEBUG_MSG
 881     printf( "Dispatch message hwnd=%08x msg=0x%x w=%d l=%d time=%u pt=%d,%d\n",
 882             msg->hwnd, msg->message, msg->wParam, msg->lParam,
 883             msg->time, msg->pt.x, msg->pt.y );
 884 #endif
 885
 886       /* Process timer messages */
 887     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
 888     {
 889         if (msg->lParam)
 890             return CallWindowProc( (FARPROC)msg->lParam, msg->hwnd,
 891                                    msg->message, msg->wParam, GetTickCount() );
 892     }
 893
 894     if (!msg->hwnd) return 0;
 895     if (!(wndPtr = WIN_FindWndPtr( msg->hwnd ))) return 0;
 896     if (!wndPtr->lpfnWndProc) return 0;
 897     painting = (msg->message == WM_PAINT);
 898     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
 899     retval = CallWindowProc( wndPtr->lpfnWndProc, msg->hwnd, msg->message,
 900                              msg->wParam, msg->lParam );
 901     if (painting && (wndPtr->flags & WIN_NEEDS_BEGINPAINT))
 902     {
 903 #ifdef DEBUG_WIN
 904         printf( "BeginPaint not called on WM_PAINT for hwnd %d!\n", msg->hwnd);
 905 #endif
 906         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 907     }
 908     return retval;
 909 }
 910
 911
 912 /***********************************************************************
 913  *           GetMessagePos   (USER.119)
 914  */
 915 DWORD GetMessagePos(void)
 916 {
 917     return appMsgQueue->GetMessagePosVal;
 918 }
 919
 920
 921 /***********************************************************************
 922  *           GetMessageTime   (USER.120)
 923  */
 924 LONG GetMessageTime(void)
 925 {
 926     return appMsgQueue->GetMessageTimeVal;
 927 }
 928
 929
 930 /***********************************************************************
 931  *           GetMessageExtraInfo   (USER.288)
 932  */
 933 LONG GetMessageExtraInfo(void)
 934 {
 935     return appMsgQueue->GetMessageExtraInfoVal;
 936 }
 937
 938
 939 /***********************************************************************
 940  *           RegisterWindowMessage   (USER.118)
 941  */
 942 WORD RegisterWindowMessage( LPCSTR str )
 943 {
 944         WORD    wRet;
 945 #ifdef DEBUG_MSG
 946     printf( "RegisterWindowMessage: '%s'\n", str );
 947 #endif
 948         wRet = GlobalAddAtom( str );
 949     return wRet;
 950 }
 951
 952
 953 /***********************************************************************
 954  *           GetTickCount    (USER.13)
 955  */
 956 DWORD GetTickCount()
 957 {
 958     struct timeval t;
 959     gettimeofday( &t, NULL );
 960     return (t.tv_sec * 1000) + (t.tv_usec / 1000);
 961 }