windows/message.c

   1 /*
   2  * Message queues related functions
   3  *
   4  * Copyright 1993, 1994 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27 #ifdef HAVE_SYS_TIME_H
  28 # include <sys/time.h>
  29 #endif
  30 #include <sys/types.h>
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "wingdi.h"
  35 #include "winuser.h"
  36 #include "message.h"
  37 #include "winerror.h"
  38 #include "ntstatus.h"
  39 #include "wine/server.h"
  40 #include "controls.h"
  41 #include "dde.h"
  42 #include "message.h"
  43 #include "user.h"
  44 #include "win.h"
  45 #include "winpos.h"
  46 #include "winproc.h"
  47 #include "wine/debug.h"
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(msg);
  50 WINE_DECLARE_DEBUG_CHANNEL(key);
  51
  52 #define WM_NCMOUSEFIRST         WM_NCMOUSEMOVE
  53 #define WM_NCMOUSELAST          WM_NCMBUTTONDBLCLK
  54
  55
  56 /***********************************************************************
  57  *           is_keyboard_message
  58  */
  59 inline static BOOL is_keyboard_message( UINT message )
  60 {
  61     return (message >= WM_KEYFIRST && message <= WM_KEYLAST);
  62 }
  63
  64
  65 /***********************************************************************
  66  *           is_mouse_message
  67  */
  68 inline static BOOL is_mouse_message( UINT message )
  69 {
  70     return ((message >= WM_NCMOUSEFIRST && message <= WM_NCMOUSELAST) ||
  71             (message >= WM_MOUSEFIRST && message <= WM_MOUSELAST));
  72 }
  73
  74
  75 /***********************************************************************
  76  *           check_message_filter
  77  */
  78 inline static BOOL check_message_filter( const MSG *msg, HWND hwnd, UINT first, UINT last )
  79 {
  80     if (hwnd)
  81     {
  82         if (msg->hwnd != hwnd && !IsChild( hwnd, msg->hwnd )) return FALSE;
  83     }
  84     if (first || last)
  85     {
  86        return (msg->message >= first && msg->message <= last);
  87     }
  88     return TRUE;
  89 }
  90
  91
  92 /***********************************************************************
  93  *           process_sent_messages
  94  *
  95  * Process all pending sent messages.
  96  */
  97 inline static void process_sent_messages(void)
  98 {
  99     MSG msg;
 100     MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY );
 101 }
 102
 103
 104 /***********************************************************************
 105  *           queue_hardware_message
 106  *
 107  * store a hardware message in the thread queue
 108  */
 109 #if 0
 110 static void queue_hardware_message( MSG *msg, ULONG_PTR extra_info )
 111 {
 112     SERVER_START_REQ( send_message )
 113     {
 114         req->type   = MSG_HARDWARE;
 115         req->id     = GetWindowThreadProcessId( msg->hwnd, NULL );
 116         req->win    = msg->hwnd;
 117         req->msg    = msg->message;
 118         req->wparam = msg->wParam;
 119         req->lparam = msg->lParam;
 120         req->x      = msg->pt.x;
 121         req->y      = msg->pt.y;
 122         req->time   = msg->time;
 123         req->info   = extra_info;
 124         req->timeout = 0;
 125         wine_server_call( req );
 126     }
 127     SERVER_END_REQ;
 128 }
 129 #endif
 130
 131
 132 /***********************************************************************
 133  *           MSG_SendParentNotify
 134  *
 135  * Send a WM_PARENTNOTIFY to all ancestors of the given window, unless
 136  * the window has the WS_EX_NOPARENTNOTIFY style.
 137  */
 138 static void MSG_SendParentNotify( HWND hwnd, WORD event, WORD idChild, POINT pt )
 139 {
 140     /* pt has to be in the client coordinates of the parent window */
 141     MapWindowPoints( 0, hwnd, &pt, 1 );
 142     for (;;)
 143     {
 144         HWND parent;
 145
 146         if (!(GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD)) break;
 147         if (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) break;
 148         if (!(parent = GetParent(hwnd))) break;
 149         MapWindowPoints( hwnd, parent, &pt, 1 );
 150         hwnd = parent;
 151         SendMessageA( hwnd, WM_PARENTNOTIFY,
 152                       MAKEWPARAM( event, idChild ), MAKELPARAM( pt.x, pt.y ) );
 153     }
 154 }
 155
 156
 157 #if 0  /* this is broken for now, will require proper support in the server */
 158
 159 /***********************************************************************
 160  *          MSG_JournalPlayBackMsg
 161  *
 162  * Get an EVENTMSG struct via call JOURNALPLAYBACK hook function
 163  */
 164 void MSG_JournalPlayBackMsg(void)
 165 {
 166     EVENTMSG tmpMsg;
 167     MSG msg;
 168     LRESULT wtime;
 169     int keyDown,i;
 170
 171     wtime=HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_GETNEXT, 0, (LPARAM)&tmpMsg, TRUE );
 172     /*  TRACE(msg,"Playback wait time =%ld\n",wtime); */
 173     if (wtime<=0)
 174     {
 175         wtime=0;
 176         msg.message = tmpMsg.message;
 177         msg.hwnd    = tmpMsg.hwnd;
 178         msg.time    = tmpMsg.time;
 179         if ((tmpMsg.message >= WM_KEYFIRST) && (tmpMsg.message <= WM_KEYLAST))
 180         {
 181             msg.wParam  = tmpMsg.paramL & 0xFF;
 182             msg.lParam  = MAKELONG(tmpMsg.paramH&0x7ffff,tmpMsg.paramL>>8);
 183             if (tmpMsg.message == WM_KEYDOWN || tmpMsg.message == WM_SYSKEYDOWN)
 184             {
 185                 for (keyDown=i=0; i<256 && !keyDown; i++)
 186                     if (InputKeyStateTable[i] & 0x80)
 187                         keyDown++;
 188                 if (!keyDown)
 189                     msg.lParam |= 0x40000000;
 190                 InputKeyStateTable[msg.wParam] |= 0x80;
 191                 AsyncKeyStateTable[msg.wParam] |= 0x80;
 192             }
 193             else                                       /* WM_KEYUP, WM_SYSKEYUP */
 194             {
 195                 msg.lParam |= 0xC0000000;
 196                 InputKeyStateTable[msg.wParam] &= ~0x80;
 197             }
 198             if (InputKeyStateTable[VK_MENU] & 0x80)
 199                 msg.lParam |= 0x20000000;
 200             if (tmpMsg.paramH & 0x8000)              /*special_key bit*/
 201                 msg.lParam |= 0x01000000;
 202
 203             msg.pt.x = msg.pt.y = 0;
 204             queue_hardware_message( &msg, 0 );
 205         }
 206         else if ((tmpMsg.message>= WM_MOUSEFIRST) && (tmpMsg.message <= WM_MOUSELAST))
 207         {
 208             switch (tmpMsg.message)
 209             {
 210             case WM_LBUTTONDOWN:
 211                 InputKeyStateTable[VK_LBUTTON] |= 0x80;
 212                 AsyncKeyStateTable[VK_LBUTTON] |= 0x80;
 213                 break;
 214             case WM_LBUTTONUP:
 215                 InputKeyStateTable[VK_LBUTTON] &= ~0x80;
 216                 break;
 217             case WM_MBUTTONDOWN:
 218                 InputKeyStateTable[VK_MBUTTON] |= 0x80;
 219                 AsyncKeyStateTable[VK_MBUTTON] |= 0x80;
 220                 break;
 221             case WM_MBUTTONUP:
 222                 InputKeyStateTable[VK_MBUTTON] &= ~0x80;
 223                 break;
 224             case WM_RBUTTONDOWN:
 225                 InputKeyStateTable[VK_RBUTTON] |= 0x80;
 226                 AsyncKeyStateTable[VK_RBUTTON] |= 0x80;
 227                 break;
 228             case WM_RBUTTONUP:
 229                 InputKeyStateTable[VK_RBUTTON] &= ~0x80;
 230                 break;
 231             }
 232             SetCursorPos(tmpMsg.paramL,tmpMsg.paramH);
 233             msg.lParam=MAKELONG(tmpMsg.paramL,tmpMsg.paramH);
 234             msg.wParam=0;
 235             if (InputKeyStateTable[VK_LBUTTON] & 0x80) msg.wParam |= MK_LBUTTON;
 236             if (InputKeyStateTable[VK_MBUTTON] & 0x80) msg.wParam |= MK_MBUTTON;
 237             if (InputKeyStateTable[VK_RBUTTON] & 0x80) msg.wParam |= MK_RBUTTON;
 238
 239             msg.pt.x = tmpMsg.paramL;
 240             msg.pt.y = tmpMsg.paramH;
 241             queue_hardware_message( &msg, 0 );
 242         }
 243         HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_SKIP, 0, (LPARAM)&tmpMsg, TRUE );
 244     }
 245     else
 246     {
 247         if( tmpMsg.message == WM_QUEUESYNC ) HOOK_CallHooks( WH_CBT, HCBT_QS, 0, 0, TRUE );
 248     }
 249 }
 250 #endif
 251
 252
 253 /***********************************************************************
 254  *          process_raw_keyboard_message
 255  *
 256  * returns TRUE if the contents of 'msg' should be passed to the application
 257  */
 258 static void process_raw_keyboard_message( MSG *msg )
 259 {
 260     EVENTMSG event;
 261
 262     event.message = msg->message;
 263     event.hwnd    = msg->hwnd;
 264     event.time    = msg->time;
 265     event.paramL  = (msg->wParam & 0xFF) | (HIWORD(msg->lParam) << 8);
 266     event.paramH  = msg->lParam & 0x7FFF;
 267     if (HIWORD(msg->lParam) & 0x0100) event.paramH |= 0x8000; /* special_key - bit */
 268     HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
 269 }
 270
 271
 272 /***********************************************************************
 273  *          process_cooked_keyboard_message
 274  *
 275  * returns TRUE if the contents of 'msg' should be passed to the application
 276  */
 277 static BOOL process_cooked_keyboard_message( MSG *msg, BOOL remove )
 278 {
 279     if (remove)
 280     {
 281         /* Handle F1 key by sending out WM_HELP message */
 282         if ((msg->message == WM_KEYUP) &&
 283             (msg->wParam == VK_F1) &&
 284             (msg->hwnd != GetDesktopWindow()) &&
 285             !MENU_IsMenuActive())
 286         {
 287             HELPINFO hi;
 288             hi.cbSize = sizeof(HELPINFO);
 289             hi.iContextType = HELPINFO_WINDOW;
 290             hi.iCtrlId = GetWindowLongA( msg->hwnd, GWL_ID );
 291             hi.hItemHandle = msg->hwnd;
 292             hi.dwContextId = GetWindowContextHelpId( msg->hwnd );
 293             hi.MousePos = msg->pt;
 294             SendMessageA(msg->hwnd, WM_HELP, 0, (LPARAM)&hi);
 295         }
 296     }
 297
 298     if (HOOK_CallHooks( WH_KEYBOARD, remove ? HC_ACTION : HC_NOREMOVE,
 299                         LOWORD(msg->wParam), msg->lParam, TRUE ))
 300     {
 301         /* skip this message */
 302         HOOK_CallHooks( WH_CBT, HCBT_KEYSKIPPED, LOWORD(msg->wParam), msg->lParam, TRUE );
 303         return FALSE;
 304     }
 305     return TRUE;
 306 }
 307
 308
 309 /***********************************************************************
 310  *          process_raw_mouse_message
 311  */
 312 static void process_raw_mouse_message( MSG *msg, BOOL remove )
 313 {
 314     static MSG clk_msg;
 315
 316     POINT pt;
 317     INT hittest;
 318     EVENTMSG event;
 319     GUITHREADINFO info;
 320     HWND hWndScope = msg->hwnd;
 321
 322     /* find the window to dispatch this mouse message to */
 323
 324     hittest = HTCLIENT;
 325     GetGUIThreadInfo( GetCurrentThreadId(), &info );
 326     if (!(msg->hwnd = info.hwndCapture))
 327     {
 328         /* If no capture HWND, find window which contains the mouse position.
 329          * Also find the position of the cursor hot spot (hittest) */
 330         if (!IsWindow(hWndScope)) hWndScope = 0;
 331         if (!(msg->hwnd = WINPOS_WindowFromPoint( hWndScope, msg->pt, &hittest )))
 332             msg->hwnd = GetDesktopWindow();
 333     }
 334
 335     event.message = msg->message;
 336     event.time    = msg->time;
 337     event.hwnd    = msg->hwnd;
 338     event.paramL  = msg->pt.x;
 339     event.paramH  = msg->pt.y;
 340     HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
 341
 342     /* translate double clicks */
 343
 344     if ((msg->message == WM_LBUTTONDOWN) ||
 345         (msg->message == WM_RBUTTONDOWN) ||
 346         (msg->message == WM_MBUTTONDOWN))
 347     {
 348         BOOL update = remove;
 349         /* translate double clicks -
 350          * note that ...MOUSEMOVEs can slip in between
 351          * ...BUTTONDOWN and ...BUTTONDBLCLK messages */
 352
 353         if ((info.flags & (GUI_INMENUMODE|GUI_INMOVESIZE)) ||
 354             hittest != HTCLIENT ||
 355             (GetClassLongA( msg->hwnd, GCL_STYLE ) & CS_DBLCLKS))
 356         {
 357            if ((msg->message == clk_msg.message) &&
 358                (msg->hwnd == clk_msg.hwnd) &&
 359                (msg->time - clk_msg.time < GetDoubleClickTime()) &&
 360                (abs(msg->pt.x - clk_msg.pt.x) < GetSystemMetrics(SM_CXDOUBLECLK)/2) &&
 361                (abs(msg->pt.y - clk_msg.pt.y) < GetSystemMetrics(SM_CYDOUBLECLK)/2))
 362            {
 363                msg->message += (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN);
 364                if (remove)
 365                {
 366                    clk_msg.message = 0;
 367                    update = FALSE;
 368                }
 369            }
 370         }
 371         /* update static double click conditions */
 372         if (update) clk_msg = *msg;
 373     }
 374
 375     pt = msg->pt;
 376     /* Note: windows has no concept of a non-client wheel message */
 377     if (hittest != HTCLIENT && msg->message != WM_MOUSEWHEEL)
 378     {
 379         msg->message += WM_NCMOUSEMOVE - WM_MOUSEMOVE;
 380         msg->wParam = hittest;
 381     }
 382     else
 383     {
 384         /* coordinates don't get translated while tracking a menu */
 385         /* FIXME: should differentiate popups and top-level menus */
 386         if (!(info.flags & GUI_INMENUMODE)) ScreenToClient( msg->hwnd, &pt );
 387     }
 388     msg->lParam = MAKELONG( pt.x, pt.y );
 389 }
 390
 391
 392 /***********************************************************************
 393  *          process_cooked_mouse_message
 394  *
 395  * returns TRUE if the contents of 'msg' should be passed to the application
 396  */
 397 static BOOL process_cooked_mouse_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 398 {
 399     MOUSEHOOKSTRUCT hook;
 400     INT hittest = HTCLIENT;
 401     UINT raw_message = msg->message;
 402     BOOL eatMsg;
 403
 404     if (msg->message >= WM_NCMOUSEFIRST && msg->message <= WM_NCMOUSELAST)
 405     {
 406         raw_message += WM_MOUSEFIRST - WM_NCMOUSEFIRST;
 407         hittest = msg->wParam;
 408     }
 409     if (raw_message == WM_LBUTTONDBLCLK ||
 410         raw_message == WM_RBUTTONDBLCLK ||
 411         raw_message == WM_MBUTTONDBLCLK)
 412     {
 413         raw_message += WM_LBUTTONDOWN - WM_LBUTTONDBLCLK;
 414     }
 415
 416     hook.pt           = msg->pt;
 417     hook.hwnd         = msg->hwnd;
 418     hook.wHitTestCode = hittest;
 419     hook.dwExtraInfo  = extra_info;
 420     if (HOOK_CallHooks( WH_MOUSE, remove ? HC_ACTION : HC_NOREMOVE,
 421                         msg->message, (LPARAM)&hook, TRUE ))
 422     {
 423         hook.pt           = msg->pt;
 424         hook.hwnd         = msg->hwnd;
 425         hook.wHitTestCode = hittest;
 426         hook.dwExtraInfo  = extra_info;
 427         HOOK_CallHooks( WH_CBT, HCBT_CLICKSKIPPED, msg->message, (LPARAM)&hook, TRUE );
 428         return FALSE;
 429     }
 430
 431     if ((hittest == HTERROR) || (hittest == HTNOWHERE))
 432     {
 433         SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
 434                       MAKELONG( hittest, raw_message ));
 435         return FALSE;
 436     }
 437
 438     if (!remove || GetCapture()) return TRUE;
 439
 440     eatMsg = FALSE;
 441
 442     if ((raw_message == WM_LBUTTONDOWN) ||
 443         (raw_message == WM_RBUTTONDOWN) ||
 444         (raw_message == WM_MBUTTONDOWN))
 445     {
 446         /* Send the WM_PARENTNOTIFY,
 447          * note that even for double/nonclient clicks
 448          * notification message is still WM_L/M/RBUTTONDOWN.
 449          */
 450         MSG_SendParentNotify( msg->hwnd, raw_message, 0, msg->pt );
 451
 452         /* Activate the window if needed */
 453
 454         if (msg->hwnd != GetActiveWindow())
 455         {
 456             HWND hwndTop = msg->hwnd;
 457             while (hwndTop)
 458             {
 459                 if ((GetWindowLongW( hwndTop, GWL_STYLE ) & (WS_POPUP|WS_CHILD)) != WS_CHILD) break;
 460                 hwndTop = GetParent( hwndTop );
 461             }
 462
 463             if (hwndTop && hwndTop != GetDesktopWindow())
 464             {
 465                 LONG ret = SendMessageA( msg->hwnd, WM_MOUSEACTIVATE, (WPARAM)hwndTop,
 466                                          MAKELONG( hittest, raw_message ) );
 467                 switch(ret)
 468                 {
 469                 case MA_NOACTIVATEANDEAT:
 470                     eatMsg = TRUE;
 471                     /* fall through */
 472                 case MA_NOACTIVATE:
 473                     break;
 474                 case MA_ACTIVATEANDEAT:
 475                     eatMsg = TRUE;
 476                     /* fall through */
 477                 case MA_ACTIVATE:
 478                 case 0:
 479                     if (!FOCUS_MouseActivate( hwndTop )) eatMsg = TRUE;
 480                     break;
 481                 default:
 482                     WARN( "unknown WM_MOUSEACTIVATE code %ld\n", ret );
 483                     break;
 484                 }
 485             }
 486         }
 487     }
 488
 489     /* send the WM_SETCURSOR message */
 490
 491     /* Windows sends the normal mouse message as the message parameter
 492        in the WM_SETCURSOR message even if it's non-client mouse message */
 493     SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
 494                   MAKELONG( hittest, raw_message ));
 495
 496     return !eatMsg;
 497 }
 498
 499
 500 /***********************************************************************
 501  *          process_hardware_message
 502  *
 503  * returns TRUE if the contents of 'msg' should be passed to the application
 504  */
 505 BOOL MSG_process_raw_hardware_message( MSG *msg, ULONG_PTR extra_info, HWND hwnd_filter,
 506                                        UINT first, UINT last, BOOL remove )
 507 {
 508     if (is_keyboard_message( msg->message ))
 509     {
 510         process_raw_keyboard_message( msg );
 511     }
 512     else if (is_mouse_message( msg->message ))
 513     {
 514         process_raw_mouse_message( msg, remove );
 515     }
 516     else
 517     {
 518         ERR( "unknown message type %x\n", msg->message );
 519         return FALSE;
 520     }
 521     return check_message_filter( msg, hwnd_filter, first, last );
 522 }
 523
 524
 525 /***********************************************************************
 526  *          MSG_process_cooked_hardware_message
 527  *
 528  * returns TRUE if the contents of 'msg' should be passed to the application
 529  */
 530 BOOL MSG_process_cooked_hardware_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 531 {
 532     if (is_keyboard_message( msg->message ))
 533         return process_cooked_keyboard_message( msg, remove );
 534
 535     if (is_mouse_message( msg->message ))
 536         return process_cooked_mouse_message( msg, extra_info, remove );
 537
 538     ERR( "unknown message type %x\n", msg->message );
 539     return FALSE;
 540 }
 541
 542
 543 /***********************************************************************
 544  *              WaitMessage (USER.112) Suspend thread pending messages
 545  *              WaitMessage (USER32.@) Suspend thread pending messages
 546  *
 547  * WaitMessage() suspends a thread until events appear in the thread's
 548  * queue.
 549  */
 550 BOOL WINAPI WaitMessage(void)
 551 {
 552     return (MsgWaitForMultipleObjectsEx( 0, NULL, INFINITE, QS_ALLINPUT, 0 ) != WAIT_FAILED);
 553 }
 554
 555
 556 /***********************************************************************
 557  *              MsgWaitForMultipleObjectsEx   (USER32.@)
 558  */
 559 DWORD WINAPI MsgWaitForMultipleObjectsEx( DWORD count, CONST HANDLE *pHandles,
 560                                           DWORD timeout, DWORD mask, DWORD flags )
 561 {
 562     HANDLE handles[MAXIMUM_WAIT_OBJECTS];
 563     DWORD i, ret, lock;
 564     MESSAGEQUEUE *msgQueue;
 565
 566     if (count > MAXIMUM_WAIT_OBJECTS-1)
 567     {
 568         SetLastError( ERROR_INVALID_PARAMETER );
 569         return WAIT_FAILED;
 570     }
 571
 572     if (!(msgQueue = QUEUE_Current())) return WAIT_FAILED;
 573
 574     /* set the queue mask */
 575     SERVER_START_REQ( set_queue_mask )
 576     {
 577         req->wake_mask    = (flags & MWMO_INPUTAVAILABLE) ? mask : 0;
 578         req->changed_mask = mask;
 579         req->skip_wait    = 0;
 580         wine_server_call( req );
 581     }
 582     SERVER_END_REQ;
 583
 584     /* Add the thread event to the handle list */
 585     for (i = 0; i < count; i++) handles[i] = pHandles[i];
 586     handles[count] = msgQueue->server_queue;
 587
 588     ReleaseThunkLock( &lock );
 589     if (USER_Driver.pMsgWaitForMultipleObjectsEx)
 590     {
 591         ret = USER_Driver.pMsgWaitForMultipleObjectsEx( count+1, handles, timeout, mask, flags );
 592         if (ret == count+1) ret = count; /* pretend the msg queue is ready */
 593     }
 594     else
 595         ret = WaitForMultipleObjectsEx( count+1, handles, flags & MWMO_WAITALL,
 596                                         timeout, flags & MWMO_ALERTABLE );
 597     if (lock) RestoreThunkLock( lock );
 598     return ret;
 599 }
 600
 601
 602 /***********************************************************************
 603  *              MsgWaitForMultipleObjects (USER32.@)
 604  */
 605 DWORD WINAPI MsgWaitForMultipleObjects( DWORD count, CONST HANDLE *handles,
 606                                         BOOL wait_all, DWORD timeout, DWORD mask )
 607 {
 608     return MsgWaitForMultipleObjectsEx( count, handles, timeout, mask,
 609                                         wait_all ? MWMO_WAITALL : 0 );
 610 }
 611
 612
 613 /***********************************************************************
 614  *              WaitForInputIdle (USER32.@)
 615  */
 616 DWORD WINAPI WaitForInputIdle( HANDLE hProcess, DWORD dwTimeOut )
 617 {
 618     DWORD start_time, elapsed, ret;
 619     HANDLE idle_event = (HANDLE)-1;
 620
 621     SERVER_START_REQ( wait_input_idle )
 622     {
 623         req->handle = hProcess;
 624         req->timeout = dwTimeOut;
 625         if (!(ret = wine_server_call_err( req ))) idle_event = reply->event;
 626     }
 627     SERVER_END_REQ;
 628     if (ret) return WAIT_FAILED;  /* error */
 629     if (!idle_event) return 0;  /* no event to wait on */
 630
 631     start_time = GetTickCount();
 632     elapsed = 0;
 633
 634     TRACE("waiting for %p\n", idle_event );
 635     do
 636     {
 637         ret = MsgWaitForMultipleObjects ( 1, &idle_event, FALSE, dwTimeOut - elapsed, QS_SENDMESSAGE );
 638         switch (ret)
 639         {
 640         case WAIT_OBJECT_0+1:
 641             process_sent_messages();
 642             break;
 643         case WAIT_TIMEOUT:
 644         case WAIT_FAILED:
 645             TRACE("timeout or error\n");
 646             return ret;
 647         default:
 648             TRACE("finished\n");
 649             return 0;
 650         }
 651         if (dwTimeOut != INFINITE)
 652         {
 653             elapsed = GetTickCount() - start_time;
 654             if (elapsed > dwTimeOut)
 655                 break;
 656         }
 657     }
 658     while (1);
 659
 660     return WAIT_TIMEOUT;
 661 }
 662
 663
 664 /***********************************************************************
 665  *              UserYield (USER.332)
 666  */
 667 void WINAPI UserYield16(void)
 668 {
 669    DWORD count;
 670
 671     /* Handle sent messages */
 672     process_sent_messages();
 673
 674     /* Yield */
 675     ReleaseThunkLock(&count);
 676     if (count)
 677     {
 678         RestoreThunkLock(count);
 679         /* Handle sent messages again */
 680         process_sent_messages();
 681     }
 682 }
 683
 684
 685 /***********************************************************************
 686  *              TranslateMessage (USER32.@)
 687  *
 688  * Implementation of TranslateMessage.
 689  *
 690  * TranslateMessage translates virtual-key messages into character-messages,
 691  * as follows :
 692  * WM_KEYDOWN/WM_KEYUP combinations produce a WM_CHAR or WM_DEADCHAR message.
 693  * ditto replacing WM_* with WM_SYS*
 694  * This produces WM_CHAR messages only for keys mapped to ASCII characters
 695  * by the keyboard driver.
 696  *
 697  * If the message is WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP, the
 698  * return value is nonzero, regardless of the translation.
 699  *
 700  */
 701 BOOL WINAPI TranslateMessage( const MSG *msg )
 702 {
 703     UINT message;
 704     WCHAR wp[2];
 705     BOOL rc = FALSE;
 706     BYTE state[256];
 707
 708     if (msg->message >= WM_KEYFIRST && msg->message <= WM_KEYLAST)
 709     {
 710         TRACE_(key)("(%s, %04X, %08lX)\n",
 711                     SPY_GetMsgName(msg->message, msg->hwnd), msg->wParam, msg->lParam );
 712
 713         /* Return code must be TRUE no matter what! */
 714         rc = TRUE;
 715     }
 716
 717     if ((msg->message != WM_KEYDOWN) && (msg->message != WM_SYSKEYDOWN)) return rc;
 718
 719     TRACE_(key)("Translating key %s (%04x), scancode %02x\n",
 720                  SPY_GetVKeyName(msg->wParam), msg->wParam, LOBYTE(HIWORD(msg->lParam)));
 721
 722     GetKeyboardState( state );
 723     /* FIXME : should handle ToUnicode yielding 2 */
 724     switch (ToUnicode(msg->wParam, HIWORD(msg->lParam), state, wp, 2, 0))
 725     {
 726     case 1:
 727         message = (msg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
 728         TRACE_(key)("1 -> PostMessageW(%p,%s,%04x,%08lx)\n",
 729             msg->hwnd, SPY_GetMsgName(message, msg->hwnd), wp[0], msg->lParam);
 730         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
 731         break;
 732
 733     case -1:
 734         message = (msg->message == WM_KEYDOWN) ? WM_DEADCHAR : WM_SYSDEADCHAR;
 735         TRACE_(key)("-1 -> PostMessageW(%p,%s,%04x,%08lx)\n",
 736             msg->hwnd, SPY_GetMsgName(message, msg->hwnd), wp[0], msg->lParam);
 737         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
 738         return TRUE;
 739     }
 740     return rc;
 741 }
 742
 743
 744 /***********************************************************************
 745  *              DispatchMessageA (USER32.@)
 746  */
 747 LONG WINAPI DispatchMessageA( const MSG* msg )
 748 {
 749     WND * wndPtr;
 750     LONG retval;
 751     int painting;
 752     WNDPROC winproc;
 753
 754       /* Process timer messages */
 755     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
 756     {
 757         if (msg->lParam)
 758         {
 759 /*            HOOK_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
 760
 761             /* before calling window proc, verify whether timer is still valid;
 762                there's a slim chance that the application kills the timer
 763                between GetMessage and DispatchMessage API calls */
 764             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (WNDPROC)msg->lParam))
 765                 return 0; /* invalid winproc */
 766
 767             return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
 768                                    msg->message, msg->wParam, GetTickCount() );
 769         }
 770     }
 771
 772     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
 773     {
 774         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 775         return 0;
 776     }
 777     if (wndPtr == WND_OTHER_PROCESS)
 778     {
 779         if (IsWindow( msg->hwnd ))
 780             ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd );
 781         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 782         return 0;
 783     }
 784     if (!(winproc = wndPtr->winproc))
 785     {
 786         WIN_ReleasePtr( wndPtr );
 787         return 0;
 788     }
 789     painting = (msg->message == WM_PAINT);
 790     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
 791     WIN_ReleasePtr( wndPtr );
 792 /*    hook_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
 793
 794     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
 795                       msg->wParam, msg->lParam );
 796     retval = CallWindowProcA( winproc, msg->hwnd, msg->message,
 797                               msg->wParam, msg->lParam );
 798     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
 799                      msg->wParam, msg->lParam );
 800
 801     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
 802     {
 803         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
 804         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 805         WIN_ReleasePtr( wndPtr );
 806         if (validate)
 807         {
 808             ERR( "BeginPaint not called on WM_PAINT for hwnd %p!\n", msg->hwnd );
 809             /* Validate the update region to avoid infinite WM_PAINT loop */
 810             RedrawWindow( msg->hwnd, NULL, 0,
 811                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
 812         }
 813     }
 814     return retval;
 815 }
 816
 817
 818 /***********************************************************************
 819  *              DispatchMessageW (USER32.@) Process Message
 820  *
 821  * Process the message specified in the structure *_msg_.
 822  *
 823  * If the lpMsg parameter points to a WM_TIMER message and the
 824  * parameter of the WM_TIMER message is not NULL, the lParam parameter
 825  * points to the function that is called instead of the window
 826  * procedure.
 827  *
 828  * The message must be valid.
 829  *
 830  * RETURNS
 831  *
 832  *   DispatchMessage() returns the result of the window procedure invoked.
 833  *
 834  * CONFORMANCE
 835  *
 836  *   ECMA-234, Win32
 837  *
 838  */
 839 LONG WINAPI DispatchMessageW( const MSG* msg )
 840 {
 841     WND * wndPtr;
 842     LONG retval;
 843     int painting;
 844     WNDPROC winproc;
 845
 846       /* Process timer messages */
 847     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
 848     {
 849         if (msg->lParam)
 850         {
 851 /*            HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
 852
 853             /* before calling window proc, verify whether timer is still valid;
 854                there's a slim chance that the application kills the timer
 855                between GetMessage and DispatchMessage API calls */
 856             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (WNDPROC)msg->lParam))
 857                 return 0; /* invalid winproc */
 858
 859             return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
 860                                    msg->message, msg->wParam, GetTickCount() );
 861         }
 862     }
 863
 864     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
 865     {
 866         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 867         return 0;
 868     }
 869     if (wndPtr == WND_OTHER_PROCESS)
 870     {
 871         if (IsWindow( msg->hwnd ))
 872             ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd );
 873         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 874         return 0;
 875     }
 876     if (!(winproc = wndPtr->winproc))
 877     {
 878         WIN_ReleasePtr( wndPtr );
 879         return 0;
 880     }
 881     painting = (msg->message == WM_PAINT);
 882     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
 883     WIN_ReleasePtr( wndPtr );
 884 /*    HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
 885
 886     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
 887                       msg->wParam, msg->lParam );
 888     retval = CallWindowProcW( winproc, msg->hwnd, msg->message,
 889                               msg->wParam, msg->lParam );
 890     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
 891                      msg->wParam, msg->lParam );
 892
 893     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
 894     {
 895         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
 896         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 897         WIN_ReleasePtr( wndPtr );
 898         if (validate)
 899         {
 900             ERR( "BeginPaint not called on WM_PAINT for hwnd %p!\n", msg->hwnd );
 901             /* Validate the update region to avoid infinite WM_PAINT loop */
 902             RedrawWindow( msg->hwnd, NULL, 0,
 903                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
 904         }
 905     }
 906     return retval;
 907 }
 908
 909
 910 /***********************************************************************
 911  *              RegisterWindowMessage (USER.118)
 912  *              RegisterWindowMessageA (USER32.@)
 913  */
 914 WORD WINAPI RegisterWindowMessageA( LPCSTR str )
 915 {
 916     TRACE("%s\n", str );
 917     return GlobalAddAtomA( str );
 918 }
 919
 920
 921 /***********************************************************************
 922  *              RegisterWindowMessageW (USER32.@)
 923  */
 924 WORD WINAPI RegisterWindowMessageW( LPCWSTR str )
 925 {
 926     TRACE("%p\n", str );
 927     return GlobalAddAtomW( str );
 928 }
 929
 930
 931 /***********************************************************************
 932  *              BroadcastSystemMessage  (USER32.@)
 933  *              BroadcastSystemMessageA (USER32.@)
 934  */
 935 LONG WINAPI BroadcastSystemMessage(
 936         DWORD dwFlags,LPDWORD recipients,UINT uMessage,WPARAM wParam,
 937         LPARAM lParam )
 938 {
 939     if ((*recipients & BSM_APPLICATIONS)||
 940         (*recipients == BSM_ALLCOMPONENTS))
 941     {
 942         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): semi-stub!\n",
 943               dwFlags,*recipients,uMessage,wParam,lParam);
 944         PostMessageA(HWND_BROADCAST,uMessage,wParam,lParam);
 945         return 1;
 946     }
 947     else
 948     {
 949         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): stub!\n",
 950               dwFlags,*recipients,uMessage,wParam,lParam);
 951         return -1;
 952     }
 953 }
 954
 955 /***********************************************************************
 956  *              BroadcastSystemMessageW (USER32.@)
 957  */
 958 LONG WINAPI BroadcastSystemMessageW(
 959         DWORD dwFlags,LPDWORD recipients,UINT uMessage,WPARAM wParam,
 960         LPARAM lParam )
 961 {
 962     if ((*recipients & BSM_APPLICATIONS)||
 963         (*recipients == BSM_ALLCOMPONENTS))
 964     {
 965         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): semi-stub!\n",
 966               dwFlags,*recipients,uMessage,wParam,lParam);
 967         PostMessageW(HWND_BROADCAST,uMessage,wParam,lParam);
 968         return 1;
 969     }
 970     else
 971     {
 972         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): stub!\n",
 973               dwFlags,*recipients,uMessage,wParam,lParam);
 974         return -1;
 975     }
 976 }