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 <stdlib.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26 #ifdef HAVE_SYS_TIME_H
  27 # include <sys/time.h>
  28 #endif
  29 #include <sys/types.h>
  30
  31 #include "winbase.h"
  32 #include "wingdi.h"
  33 #include "winuser.h"
  34 #include "message.h"
  35 #include "winerror.h"
  36 #include "wine/server.h"
  37 #include "win.h"
  38 #include "heap.h"
  39 #include "hook.h"
  40 #include "input.h"
  41 #include "spy.h"
  42 #include "winpos.h"
  43 #include "dde.h"
  44 #include "queue.h"
  45 #include "winproc.h"
  46 #include "user.h"
  47 #include "thread.h"
  48 #include "task.h"
  49 #include "controls.h"
  50 #include "wine/debug.h"
  51
  52 WINE_DEFAULT_DEBUG_CHANNEL(msg);
  53 WINE_DECLARE_DEBUG_CHANNEL(key);
  54
  55 #define WM_NCMOUSEFIRST         WM_NCMOUSEMOVE
  56 #define WM_NCMOUSELAST          WM_NCMBUTTONDBLCLK
  57
  58 static BYTE QueueKeyStateTable[256];
  59
  60
  61 /***********************************************************************
  62  *           is_keyboard_message
  63  */
  64 inline static BOOL is_keyboard_message( UINT message )
  65 {
  66     return (message >= WM_KEYFIRST && message <= WM_KEYLAST);
  67 }
  68
  69
  70 /***********************************************************************
  71  *           is_mouse_message
  72  */
  73 inline static BOOL is_mouse_message( UINT message )
  74 {
  75     return ((message >= WM_NCMOUSEFIRST && message <= WM_NCMOUSELAST) ||
  76             (message >= WM_MOUSEFIRST && message <= WM_MOUSELAST));
  77 }
  78
  79
  80 /***********************************************************************
  81  *           check_message_filter
  82  */
  83 inline static BOOL check_message_filter( const MSG *msg, HWND hwnd, UINT first, UINT last )
  84 {
  85     if (hwnd)
  86     {
  87         if (msg->hwnd != hwnd && !IsChild( hwnd, msg->hwnd )) return FALSE;
  88     }
  89     if (first || last)
  90     {
  91        return (msg->message >= first && msg->message <= last);
  92     }
  93     return TRUE;
  94 }
  95
  96
  97 /***********************************************************************
  98  *           process_sent_messages
  99  *
 100  * Process all pending sent messages.
 101  */
 102 inline static void process_sent_messages(void)
 103 {
 104     MSG msg;
 105     MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY );
 106 }
 107
 108
 109 /***********************************************************************
 110  *           queue_hardware_message
 111  *
 112  * store a hardware message in the thread queue
 113  */
 114 static void queue_hardware_message( MSG *msg, ULONG_PTR extra_info, enum message_type type )
 115 {
 116     SERVER_START_REQ( send_message )
 117     {
 118         req->type   = type;
 119         req->id     = (void *)GetWindowThreadProcessId( msg->hwnd, NULL );
 120         req->win    = msg->hwnd;
 121         req->msg    = msg->message;
 122         req->wparam = msg->wParam;
 123         req->lparam = msg->lParam;
 124         req->x      = msg->pt.x;
 125         req->y      = msg->pt.y;
 126         req->time   = msg->time;
 127         req->info   = extra_info;
 128         req->timeout = 0;
 129         wine_server_call( req );
 130     }
 131     SERVER_END_REQ;
 132 }
 133
 134
 135 /***********************************************************************
 136  *           update_queue_key_state
 137  */
 138 static void update_queue_key_state( UINT msg, WPARAM wp )
 139 {
 140     BOOL down = FALSE;
 141
 142     switch (msg)
 143     {
 144     case WM_LBUTTONDOWN:
 145         down = TRUE;
 146         /* fall through */
 147     case WM_LBUTTONUP:
 148         wp = VK_LBUTTON;
 149         break;
 150     case WM_MBUTTONDOWN:
 151         down = TRUE;
 152         /* fall through */
 153     case WM_MBUTTONUP:
 154         wp = VK_MBUTTON;
 155         break;
 156     case WM_RBUTTONDOWN:
 157         down = TRUE;
 158         /* fall through */
 159     case WM_RBUTTONUP:
 160         wp = VK_RBUTTON;
 161         break;
 162     case WM_KEYDOWN:
 163     case WM_SYSKEYDOWN:
 164         down = TRUE;
 165         /* fall through */
 166     case WM_KEYUP:
 167     case WM_SYSKEYUP:
 168         wp = wp & 0xff;
 169         break;
 170     }
 171     if (down)
 172     {
 173         BYTE *p = &QueueKeyStateTable[wp];
 174         if (!(*p & 0x80)) *p ^= 0x01;
 175         *p |= 0x80;
 176     }
 177     else QueueKeyStateTable[wp] &= ~0x80;
 178 }
 179
 180
 181 /***********************************************************************
 182  *           MSG_SendParentNotify
 183  *
 184  * Send a WM_PARENTNOTIFY to all ancestors of the given window, unless
 185  * the window has the WS_EX_NOPARENTNOTIFY style.
 186  */
 187 static void MSG_SendParentNotify( HWND hwnd, WORD event, WORD idChild, POINT pt )
 188 {
 189     /* pt has to be in the client coordinates of the parent window */
 190     MapWindowPoints( 0, hwnd, &pt, 1 );
 191     for (;;)
 192     {
 193         HWND parent;
 194
 195         if (!(GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD)) break;
 196         if (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) break;
 197         if (!(parent = GetParent(hwnd))) break;
 198         MapWindowPoints( hwnd, parent, &pt, 1 );
 199         hwnd = parent;
 200         SendMessageA( hwnd, WM_PARENTNOTIFY,
 201                       MAKEWPARAM( event, idChild ), MAKELPARAM( pt.x, pt.y ) );
 202     }
 203 }
 204
 205
 206 /***********************************************************************
 207  *          MSG_JournalPlayBackMsg
 208  *
 209  * Get an EVENTMSG struct via call JOURNALPLAYBACK hook function
 210  */
 211 void MSG_JournalPlayBackMsg(void)
 212 {
 213     EVENTMSG tmpMsg;
 214     MSG msg;
 215     LRESULT wtime;
 216     int keyDown,i;
 217
 218     if (!HOOK_IsHooked( WH_JOURNALPLAYBACK )) return;
 219
 220     wtime=HOOK_CallHooksA( WH_JOURNALPLAYBACK, HC_GETNEXT, 0, (LPARAM)&tmpMsg );
 221     /*  TRACE(msg,"Playback wait time =%ld\n",wtime); */
 222     if (wtime<=0)
 223     {
 224         wtime=0;
 225         msg.message = tmpMsg.message;
 226         msg.hwnd    = tmpMsg.hwnd;
 227         msg.time    = tmpMsg.time;
 228         if ((tmpMsg.message >= WM_KEYFIRST) && (tmpMsg.message <= WM_KEYLAST))
 229         {
 230             msg.wParam  = tmpMsg.paramL & 0xFF;
 231             msg.lParam  = MAKELONG(tmpMsg.paramH&0x7ffff,tmpMsg.paramL>>8);
 232             if (tmpMsg.message == WM_KEYDOWN || tmpMsg.message == WM_SYSKEYDOWN)
 233             {
 234                 for (keyDown=i=0; i<256 && !keyDown; i++)
 235                     if (InputKeyStateTable[i] & 0x80)
 236                         keyDown++;
 237                 if (!keyDown)
 238                     msg.lParam |= 0x40000000;
 239                 InputKeyStateTable[msg.wParam] |= 0x80;
 240                 AsyncKeyStateTable[msg.wParam] |= 0x80;
 241             }
 242             else                                       /* WM_KEYUP, WM_SYSKEYUP */
 243             {
 244                 msg.lParam |= 0xC0000000;
 245                 InputKeyStateTable[msg.wParam] &= ~0x80;
 246             }
 247             if (InputKeyStateTable[VK_MENU] & 0x80)
 248                 msg.lParam |= 0x20000000;
 249             if (tmpMsg.paramH & 0x8000)              /*special_key bit*/
 250                 msg.lParam |= 0x01000000;
 251
 252             msg.pt.x = msg.pt.y = 0;
 253             queue_hardware_message( &msg, 0, MSG_HARDWARE_RAW );
 254         }
 255         else if ((tmpMsg.message>= WM_MOUSEFIRST) && (tmpMsg.message <= WM_MOUSELAST))
 256         {
 257             switch (tmpMsg.message)
 258             {
 259             case WM_LBUTTONDOWN:
 260                 InputKeyStateTable[VK_LBUTTON] |= 0x80;
 261                 AsyncKeyStateTable[VK_LBUTTON] |= 0x80;
 262                 break;
 263             case WM_LBUTTONUP:
 264                 InputKeyStateTable[VK_LBUTTON] &= ~0x80;
 265                 break;
 266             case WM_MBUTTONDOWN:
 267                 InputKeyStateTable[VK_MBUTTON] |= 0x80;
 268                 AsyncKeyStateTable[VK_MBUTTON] |= 0x80;
 269                 break;
 270             case WM_MBUTTONUP:
 271                 InputKeyStateTable[VK_MBUTTON] &= ~0x80;
 272                 break;
 273             case WM_RBUTTONDOWN:
 274                 InputKeyStateTable[VK_RBUTTON] |= 0x80;
 275                 AsyncKeyStateTable[VK_RBUTTON] |= 0x80;
 276                 break;
 277             case WM_RBUTTONUP:
 278                 InputKeyStateTable[VK_RBUTTON] &= ~0x80;
 279                 break;
 280             }
 281             SetCursorPos(tmpMsg.paramL,tmpMsg.paramH);
 282             msg.lParam=MAKELONG(tmpMsg.paramL,tmpMsg.paramH);
 283             msg.wParam=0;
 284             if (InputKeyStateTable[VK_LBUTTON] & 0x80) msg.wParam |= MK_LBUTTON;
 285             if (InputKeyStateTable[VK_MBUTTON] & 0x80) msg.wParam |= MK_MBUTTON;
 286             if (InputKeyStateTable[VK_RBUTTON] & 0x80) msg.wParam |= MK_RBUTTON;
 287
 288             msg.pt.x = tmpMsg.paramL;
 289             msg.pt.y = tmpMsg.paramH;
 290             queue_hardware_message( &msg, 0, MSG_HARDWARE_RAW );
 291         }
 292         HOOK_CallHooksA( WH_JOURNALPLAYBACK, HC_SKIP, 0, (LPARAM)&tmpMsg);
 293     }
 294     else
 295     {
 296         if( tmpMsg.message == WM_QUEUESYNC )
 297             if (HOOK_IsHooked( WH_CBT ))
 298                 HOOK_CallHooksA( WH_CBT, HCBT_QS, 0, 0L);
 299     }
 300 }
 301
 302
 303 /***********************************************************************
 304  *          process_raw_keyboard_message
 305  *
 306  * returns TRUE if the contents of 'msg' should be passed to the application
 307  */
 308 static BOOL process_raw_keyboard_message( MSG *msg, ULONG_PTR extra_info )
 309 {
 310     if (!(msg->hwnd = GetFocus()))
 311     {
 312         /* Send the message to the active window instead,  */
 313         /* translating messages to their WM_SYS equivalent */
 314         msg->hwnd = GetActiveWindow();
 315         if (msg->message < WM_SYSKEYDOWN) msg->message += WM_SYSKEYDOWN - WM_KEYDOWN;
 316     }
 317
 318     if (HOOK_IsHooked( WH_JOURNALRECORD ))
 319     {
 320         EVENTMSG event;
 321
 322         event.message = msg->message;
 323         event.hwnd    = msg->hwnd;
 324         event.time    = msg->time;
 325         event.paramL  = (msg->wParam & 0xFF) | (HIWORD(msg->lParam) << 8);
 326         event.paramH  = msg->lParam & 0x7FFF;
 327         if (HIWORD(msg->lParam) & 0x0100) event.paramH |= 0x8000; /* special_key - bit */
 328         HOOK_CallHooksA( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event );
 329     }
 330
 331     /* if we are going to throw away the message, update the queue state now */
 332     if (!msg->hwnd) update_queue_key_state( msg->message, msg->wParam );
 333
 334     return (msg->hwnd != 0);
 335 }
 336
 337
 338 /***********************************************************************
 339  *          process_cooked_keyboard_message
 340  *
 341  * returns TRUE if the contents of 'msg' should be passed to the application
 342  */
 343 static BOOL process_cooked_keyboard_message( MSG *msg, BOOL remove )
 344 {
 345     if (remove)
 346     {
 347         update_queue_key_state( msg->message, msg->wParam );
 348
 349         /* Handle F1 key by sending out WM_HELP message */
 350         if ((msg->message == WM_KEYUP) &&
 351             (msg->wParam == VK_F1) &&
 352             (msg->hwnd != GetDesktopWindow()) &&
 353             !MENU_IsMenuActive())
 354         {
 355             HELPINFO hi;
 356             hi.cbSize = sizeof(HELPINFO);
 357             hi.iContextType = HELPINFO_WINDOW;
 358             hi.iCtrlId = GetWindowLongA( msg->hwnd, GWL_ID );
 359             hi.hItemHandle = msg->hwnd;
 360             hi.dwContextId = GetWindowContextHelpId( msg->hwnd );
 361             hi.MousePos = msg->pt;
 362             SendMessageA(msg->hwnd, WM_HELP, 0, (LPARAM)&hi);
 363         }
 364     }
 365
 366     if (HOOK_CallHooksA( WH_KEYBOARD, remove ? HC_ACTION : HC_NOREMOVE,
 367                          LOWORD(msg->wParam), msg->lParam ))
 368     {
 369         /* skip this message */
 370         HOOK_CallHooksA( WH_CBT, HCBT_KEYSKIPPED, LOWORD(msg->wParam), msg->lParam );
 371         return FALSE;
 372     }
 373     return TRUE;
 374 }
 375
 376
 377 /***********************************************************************
 378  *          process_raw_mouse_message
 379  *
 380  * returns TRUE if the contents of 'msg' should be passed to the application
 381  */
 382 static BOOL process_raw_mouse_message( MSG *msg, ULONG_PTR extra_info )
 383 {
 384     static MSG clk_msg;
 385
 386     POINT pt;
 387     INT ht, hittest;
 388
 389     /* find the window to dispatch this mouse message to */
 390
 391     hittest = HTCLIENT;
 392     if (!(msg->hwnd = PERQDATA_GetCaptureWnd( &ht )))
 393     {
 394         /* If no capture HWND, find window which contains the mouse position.
 395          * Also find the position of the cursor hot spot (hittest) */
 396         HWND hWndScope = (HWND)extra_info;
 397
 398         if (!IsWindow(hWndScope)) hWndScope = 0;
 399         if (!(msg->hwnd = WINPOS_WindowFromPoint( hWndScope, msg->pt, &hittest )))
 400             msg->hwnd = GetDesktopWindow();
 401         ht = hittest;
 402     }
 403
 404     if (HOOK_IsHooked( WH_JOURNALRECORD ))
 405     {
 406         EVENTMSG event;
 407         event.message = msg->message;
 408         event.time    = msg->time;
 409         event.hwnd    = msg->hwnd;
 410         event.paramL  = msg->pt.x;
 411         event.paramH  = msg->pt.y;
 412         HOOK_CallHooksA( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event );
 413     }
 414
 415     /* translate double clicks */
 416
 417     if ((msg->message == WM_LBUTTONDOWN) ||
 418         (msg->message == WM_RBUTTONDOWN) ||
 419         (msg->message == WM_MBUTTONDOWN))
 420     {
 421         BOOL update = TRUE;
 422         /* translate double clicks -
 423          * note that ...MOUSEMOVEs can slip in between
 424          * ...BUTTONDOWN and ...BUTTONDBLCLK messages */
 425
 426         if (GetClassLongA( msg->hwnd, GCL_STYLE ) & CS_DBLCLKS || ht != HTCLIENT )
 427         {
 428            if ((msg->message == clk_msg.message) &&
 429                (msg->hwnd == clk_msg.hwnd) &&
 430                (msg->time - clk_msg.time < GetDoubleClickTime()) &&
 431                (abs(msg->pt.x - clk_msg.pt.x) < GetSystemMetrics(SM_CXDOUBLECLK)/2) &&
 432                (abs(msg->pt.y - clk_msg.pt.y) < GetSystemMetrics(SM_CYDOUBLECLK)/2))
 433            {
 434                msg->message += (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN);
 435                clk_msg.message = 0;
 436                update = FALSE;
 437            }
 438         }
 439         /* update static double click conditions */
 440         if (update) clk_msg = *msg;
 441     }
 442
 443     pt = msg->pt;
 444     /* Note: windows has no concept of a non-client wheel message */
 445     if (hittest != HTCLIENT && msg->message != WM_MOUSEWHEEL)
 446     {
 447         msg->message += WM_NCMOUSEMOVE - WM_MOUSEMOVE;
 448         msg->wParam = hittest;
 449     }
 450     else ScreenToClient( msg->hwnd, &pt );
 451     msg->lParam = MAKELONG( pt.x, pt.y );
 452     return TRUE;
 453 }
 454
 455
 456 /***********************************************************************
 457  *          process_cooked_mouse_message
 458  *
 459  * returns TRUE if the contents of 'msg' should be passed to the application
 460  */
 461 static BOOL process_cooked_mouse_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 462 {
 463     INT hittest = HTCLIENT;
 464     UINT raw_message = msg->message;
 465     BOOL eatMsg;
 466
 467     if (msg->message >= WM_NCMOUSEFIRST && msg->message <= WM_NCMOUSELAST)
 468     {
 469         raw_message += WM_MOUSEFIRST - WM_NCMOUSEFIRST;
 470         hittest = msg->wParam;
 471     }
 472     if (raw_message == WM_LBUTTONDBLCLK ||
 473         raw_message == WM_RBUTTONDBLCLK ||
 474         raw_message == WM_MBUTTONDBLCLK)
 475     {
 476         raw_message += WM_LBUTTONDOWN - WM_LBUTTONDBLCLK;
 477     }
 478
 479     if (remove) update_queue_key_state( raw_message, 0 );
 480
 481     if (HOOK_IsHooked( WH_MOUSE ))
 482     {
 483         MOUSEHOOKSTRUCT hook;
 484         hook.pt           = msg->pt;
 485         hook.hwnd         = msg->hwnd;
 486         hook.wHitTestCode = hittest;
 487         hook.dwExtraInfo  = extra_info;
 488         if (HOOK_CallHooksA( WH_MOUSE, remove ? HC_ACTION : HC_NOREMOVE,
 489                              msg->message, (LPARAM)&hook ))
 490         {
 491             hook.pt           = msg->pt;
 492             hook.hwnd         = msg->hwnd;
 493             hook.wHitTestCode = hittest;
 494             hook.dwExtraInfo  = extra_info;
 495             HOOK_CallHooksA( WH_CBT, HCBT_CLICKSKIPPED, msg->message, (LPARAM)&hook );
 496             return FALSE;
 497         }
 498     }
 499
 500     if ((hittest == HTERROR) || (hittest == HTNOWHERE))
 501     {
 502         SendMessageA( msg->hwnd, WM_SETCURSOR, msg->hwnd, MAKELONG( hittest, raw_message ));
 503         return FALSE;
 504     }
 505
 506     if (!remove || GetCapture()) return TRUE;
 507
 508     eatMsg = FALSE;
 509
 510     if ((raw_message == WM_LBUTTONDOWN) ||
 511         (raw_message == WM_RBUTTONDOWN) ||
 512         (raw_message == WM_MBUTTONDOWN))
 513     {
 514         HWND hwndTop = GetAncestor( msg->hwnd, GA_ROOT );
 515
 516         /* Send the WM_PARENTNOTIFY,
 517          * note that even for double/nonclient clicks
 518          * notification message is still WM_L/M/RBUTTONDOWN.
 519          */
 520         MSG_SendParentNotify( msg->hwnd, raw_message, 0, msg->pt );
 521
 522         /* Activate the window if needed */
 523
 524         if (msg->hwnd != GetActiveWindow() && hwndTop != GetDesktopWindow())
 525         {
 526             LONG ret = SendMessageA( msg->hwnd, WM_MOUSEACTIVATE, hwndTop,
 527                                      MAKELONG( hittest, raw_message ) );
 528
 529             switch(ret)
 530             {
 531             case MA_NOACTIVATEANDEAT:
 532                 eatMsg = TRUE;
 533                 /* fall through */
 534             case MA_NOACTIVATE:
 535                 break;
 536             case MA_ACTIVATEANDEAT:
 537                 eatMsg = TRUE;
 538                 /* fall through */
 539             case MA_ACTIVATE:
 540             case 0:
 541                 if (hwndTop != GetForegroundWindow() )
 542                 {
 543                     if (!WINPOS_SetActiveWindow( hwndTop, TRUE , TRUE ))
 544                         eatMsg = TRUE;
 545                 }
 546                 break;
 547             default:
 548                 WARN( "unknown WM_MOUSEACTIVATE code %ld\n", ret );
 549                 break;
 550             }
 551         }
 552     }
 553
 554     /* send the WM_SETCURSOR message */
 555
 556     /* Windows sends the normal mouse message as the message parameter
 557        in the WM_SETCURSOR message even if it's non-client mouse message */
 558     SendMessageA( msg->hwnd, WM_SETCURSOR, msg->hwnd, MAKELONG( hittest, raw_message ));
 559
 560     return !eatMsg;
 561 }
 562
 563
 564 /***********************************************************************
 565  *          process_hardware_message
 566  *
 567  * returns TRUE if the contents of 'msg' should be passed to the application
 568  */
 569 BOOL MSG_process_raw_hardware_message( MSG *msg, ULONG_PTR extra_info, HWND hwnd_filter,
 570                                        UINT first, UINT last, BOOL remove )
 571 {
 572     if (is_keyboard_message( msg->message ))
 573     {
 574         if (!process_raw_keyboard_message( msg, extra_info )) return FALSE;
 575     }
 576     else if (is_mouse_message( msg->message ))
 577     {
 578         if (!process_raw_mouse_message( msg, extra_info )) return FALSE;
 579     }
 580     else
 581     {
 582         ERR( "unknown message type %x\n", msg->message );
 583         return FALSE;
 584     }
 585
 586     /* check destination thread and filters */
 587     if (!check_message_filter( msg, hwnd_filter, first, last ) ||
 588         !WIN_IsCurrentThread( msg->hwnd ))
 589     {
 590         /* queue it for later, or for another thread */
 591         queue_hardware_message( msg, extra_info, MSG_HARDWARE_COOKED );
 592         return FALSE;
 593     }
 594
 595     /* save the message in the cooked queue if we didn't want to remove it */
 596     if (!remove) queue_hardware_message( msg, extra_info, MSG_HARDWARE_COOKED );
 597     return TRUE;
 598 }
 599
 600
 601 /***********************************************************************
 602  *          MSG_process_cooked_hardware_message
 603  *
 604  * returns TRUE if the contents of 'msg' should be passed to the application
 605  */
 606 BOOL MSG_process_cooked_hardware_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 607 {
 608     if (is_keyboard_message( msg->message ))
 609         return process_cooked_keyboard_message( msg, remove );
 610
 611     if (is_mouse_message( msg->message ))
 612         return process_cooked_mouse_message( msg, extra_info, remove );
 613
 614     ERR( "unknown message type %x\n", msg->message );
 615     return FALSE;
 616 }
 617
 618
 619 /**********************************************************************
 620  *              GetKeyState (USER.106)
 621  */
 622 INT16 WINAPI GetKeyState16(INT16 vkey)
 623 {
 624     return GetKeyState(vkey);
 625 }
 626
 627
 628 /**********************************************************************
 629  *              GetKeyState (USER32.@)
 630  *
 631  * An application calls the GetKeyState function in response to a
 632  * keyboard-input message.  This function retrieves the state of the key
 633  * at the time the input message was generated.  (SDK 3.1 Vol 2. p 390)
 634  */
 635 SHORT WINAPI GetKeyState(INT vkey)
 636 {
 637     INT retval;
 638
 639     if (vkey >= 'a' && vkey <= 'z') vkey += 'A' - 'a';
 640     retval = ((WORD)(QueueKeyStateTable[vkey] & 0x80) << 8 ) |
 641               (QueueKeyStateTable[vkey] & 0x80) |
 642               (QueueKeyStateTable[vkey] & 0x01);
 643     TRACE("key (0x%x) -> %x\n", vkey, retval);
 644     return retval;
 645 }
 646
 647
 648 /**********************************************************************
 649  *              GetKeyboardState (USER.222)
 650  *              GetKeyboardState (USER32.@)
 651  *
 652  * An application calls the GetKeyboardState function in response to a
 653  * keyboard-input message.  This function retrieves the state of the keyboard
 654  * at the time the input message was generated.  (SDK 3.1 Vol 2. p 387)
 655  */
 656 BOOL WINAPI GetKeyboardState(LPBYTE lpKeyState)
 657 {
 658     TRACE_(key)("(%p)\n", lpKeyState);
 659     if (lpKeyState) memcpy(lpKeyState, QueueKeyStateTable, 256);
 660     return TRUE;
 661 }
 662
 663
 664 /**********************************************************************
 665  *              SetKeyboardState (USER.223)
 666  *              SetKeyboardState (USER32.@)
 667  */
 668 BOOL WINAPI SetKeyboardState(LPBYTE lpKeyState)
 669 {
 670     TRACE_(key)("(%p)\n", lpKeyState);
 671     if (lpKeyState) memcpy(QueueKeyStateTable, lpKeyState, 256);
 672     return TRUE;
 673 }
 674
 675
 676 /***********************************************************************
 677  *              WaitMessage (USER.112) Suspend thread pending messages
 678  *              WaitMessage (USER32.@) Suspend thread pending messages
 679  *
 680  * WaitMessage() suspends a thread until events appear in the thread's
 681  * queue.
 682  */
 683 BOOL WINAPI WaitMessage(void)
 684 {
 685     return (MsgWaitForMultipleObjectsEx( 0, NULL, INFINITE, QS_ALLINPUT, 0 ) != WAIT_FAILED);
 686 }
 687
 688
 689 /***********************************************************************
 690  *              MsgWaitForMultipleObjectsEx   (USER32.@)
 691  */
 692 DWORD WINAPI MsgWaitForMultipleObjectsEx( DWORD count, CONST HANDLE *pHandles,
 693                                           DWORD timeout, DWORD mask, DWORD flags )
 694 {
 695     HANDLE handles[MAXIMUM_WAIT_OBJECTS];
 696     DWORD i, ret, lock;
 697     MESSAGEQUEUE *msgQueue;
 698
 699     if (count > MAXIMUM_WAIT_OBJECTS-1)
 700     {
 701         SetLastError( ERROR_INVALID_PARAMETER );
 702         return WAIT_FAILED;
 703     }
 704
 705     if (!(msgQueue = QUEUE_Current())) return WAIT_FAILED;
 706
 707     /* set the queue mask */
 708     SERVER_START_REQ( set_queue_mask )
 709     {
 710         req->wake_mask    = (flags & MWMO_INPUTAVAILABLE) ? mask : 0;
 711         req->changed_mask = mask;
 712         req->skip_wait    = 0;
 713         wine_server_call( req );
 714     }
 715     SERVER_END_REQ;
 716
 717     /* Add the thread event to the handle list */
 718     for (i = 0; i < count; i++) handles[i] = pHandles[i];
 719     handles[count] = msgQueue->server_queue;
 720
 721     ReleaseThunkLock( &lock );
 722     if (USER_Driver.pMsgWaitForMultipleObjectsEx)
 723     {
 724         ret = USER_Driver.pMsgWaitForMultipleObjectsEx( count+1, handles, timeout, mask, flags );
 725         if (ret == count+1) ret = count; /* pretend the msg queue is ready */
 726     }
 727     else
 728         ret = WaitForMultipleObjectsEx( count+1, handles, flags & MWMO_WAITALL,
 729                                         timeout, flags & MWMO_ALERTABLE );
 730     if (lock) RestoreThunkLock( lock );
 731     return ret;
 732 }
 733
 734
 735 /***********************************************************************
 736  *              MsgWaitForMultipleObjects (USER32.@)
 737  */
 738 DWORD WINAPI MsgWaitForMultipleObjects( DWORD count, CONST HANDLE *handles,
 739                                         BOOL wait_all, DWORD timeout, DWORD mask )
 740 {
 741     return MsgWaitForMultipleObjectsEx( count, handles, timeout, mask,
 742                                         wait_all ? MWMO_WAITALL : 0 );
 743 }
 744
 745
 746 /***********************************************************************
 747  *              WaitForInputIdle (USER32.@)
 748  */
 749 DWORD WINAPI WaitForInputIdle( HANDLE hProcess, DWORD dwTimeOut )
 750 {
 751     DWORD start_time, elapsed, ret;
 752     HANDLE idle_event = -1;
 753
 754     SERVER_START_REQ( wait_input_idle )
 755     {
 756         req->handle = hProcess;
 757         req->timeout = dwTimeOut;
 758         if (!(ret = wine_server_call_err( req ))) idle_event = reply->event;
 759     }
 760     SERVER_END_REQ;
 761     if (ret) return WAIT_FAILED;  /* error */
 762     if (!idle_event) return 0;  /* no event to wait on */
 763
 764     start_time = GetTickCount();
 765     elapsed = 0;
 766
 767     TRACE("waiting for %x\n", idle_event );
 768     do
 769     {
 770         ret = MsgWaitForMultipleObjects ( 1, &idle_event, FALSE, dwTimeOut - elapsed, QS_SENDMESSAGE );
 771         switch (ret)
 772         {
 773         case WAIT_OBJECT_0+1:
 774             process_sent_messages();
 775             break;
 776         case WAIT_TIMEOUT:
 777         case WAIT_FAILED:
 778             TRACE("timeout or error\n");
 779             return ret;
 780         default:
 781             TRACE("finished\n");
 782             return 0;
 783         }
 784         if (dwTimeOut != INFINITE)
 785         {
 786             elapsed = GetTickCount() - start_time;
 787             if (elapsed > dwTimeOut)
 788                 break;
 789         }
 790     }
 791     while (1);
 792
 793     return WAIT_TIMEOUT;
 794 }
 795
 796
 797 /***********************************************************************
 798  *              UserYield (USER.332)
 799  *              UserYield16 (USER32.@)
 800  */
 801 void WINAPI UserYield16(void)
 802 {
 803    DWORD count;
 804
 805     /* Handle sent messages */
 806     process_sent_messages();
 807
 808     /* Yield */
 809     ReleaseThunkLock(&count);
 810     if (count)
 811     {
 812         RestoreThunkLock(count);
 813         /* Handle sent messages again */
 814         process_sent_messages();
 815     }
 816 }
 817
 818
 819 struct accent_char
 820 {
 821     BYTE ac_accent;
 822     BYTE ac_char;
 823     BYTE ac_result;
 824 };
 825
 826 static const struct accent_char accent_chars[] =
 827 {
 828 /* A good idea should be to read /usr/X11/lib/X11/locale/iso8859-x/Compose */
 829     {'`', 'A', '\300'},  {'`', 'a', '\340'},
 830     {'\'', 'A', '\301'}, {'\'', 'a', '\341'},
 831     {'^', 'A', '\302'},  {'^', 'a', '\342'},
 832     {'~', 'A', '\303'},  {'~', 'a', '\343'},
 833     {'"', 'A', '\304'},  {'"', 'a', '\344'},
 834     {'O', 'A', '\305'},  {'o', 'a', '\345'},
 835     {'0', 'A', '\305'},  {'0', 'a', '\345'},
 836     {'A', 'A', '\305'},  {'a', 'a', '\345'},
 837     {'A', 'E', '\306'},  {'a', 'e', '\346'},
 838     {',', 'C', '\307'},  {',', 'c', '\347'},
 839     {'`', 'E', '\310'},  {'`', 'e', '\350'},
 840     {'\'', 'E', '\311'}, {'\'', 'e', '\351'},
 841     {'^', 'E', '\312'},  {'^', 'e', '\352'},
 842     {'"', 'E', '\313'},  {'"', 'e', '\353'},
 843     {'`', 'I', '\314'},  {'`', 'i', '\354'},
 844     {'\'', 'I', '\315'}, {'\'', 'i', '\355'},
 845     {'^', 'I', '\316'},  {'^', 'i', '\356'},
 846     {'"', 'I', '\317'},  {'"', 'i', '\357'},
 847     {'-', 'D', '\320'},  {'-', 'd', '\360'},
 848     {'~', 'N', '\321'},  {'~', 'n', '\361'},
 849     {'`', 'O', '\322'},  {'`', 'o', '\362'},
 850     {'\'', 'O', '\323'}, {'\'', 'o', '\363'},
 851     {'^', 'O', '\324'},  {'^', 'o', '\364'},
 852     {'~', 'O', '\325'},  {'~', 'o', '\365'},
 853     {'"', 'O', '\326'},  {'"', 'o', '\366'},
 854     {'/', 'O', '\330'},  {'/', 'o', '\370'},
 855     {'`', 'U', '\331'},  {'`', 'u', '\371'},
 856     {'\'', 'U', '\332'}, {'\'', 'u', '\372'},
 857     {'^', 'U', '\333'},  {'^', 'u', '\373'},
 858     {'"', 'U', '\334'},  {'"', 'u', '\374'},
 859     {'\'', 'Y', '\335'}, {'\'', 'y', '\375'},
 860     {'T', 'H', '\336'},  {'t', 'h', '\376'},
 861     {'s', 's', '\337'},  {'"', 'y', '\377'},
 862     {'s', 'z', '\337'},  {'i', 'j', '\377'},
 863         /* iso-8859-2 uses this */
 864     {'<', 'L', '\245'},  {'<', 'l', '\265'},    /* caron */
 865     {'<', 'S', '\251'},  {'<', 's', '\271'},
 866     {'<', 'T', '\253'},  {'<', 't', '\273'},
 867     {'<', 'Z', '\256'},  {'<', 'z', '\276'},
 868     {'<', 'C', '\310'},  {'<', 'c', '\350'},
 869     {'<', 'E', '\314'},  {'<', 'e', '\354'},
 870     {'<', 'D', '\317'},  {'<', 'd', '\357'},
 871     {'<', 'N', '\322'},  {'<', 'n', '\362'},
 872     {'<', 'R', '\330'},  {'<', 'r', '\370'},
 873     {';', 'A', '\241'},  {';', 'a', '\261'},    /* ogonek */
 874     {';', 'E', '\312'},  {';', 'e', '\332'},
 875     {'\'', 'Z', '\254'}, {'\'', 'z', '\274'},   /* acute */
 876     {'\'', 'R', '\300'}, {'\'', 'r', '\340'},
 877     {'\'', 'L', '\305'}, {'\'', 'l', '\345'},
 878     {'\'', 'C', '\306'}, {'\'', 'c', '\346'},
 879     {'\'', 'N', '\321'}, {'\'', 'n', '\361'},
 880 /*  collision whith S, from iso-8859-9 !!! */
 881     {',', 'S', '\252'},  {',', 's', '\272'},    /* cedilla */
 882     {',', 'T', '\336'},  {',', 't', '\376'},
 883     {'.', 'Z', '\257'},  {'.', 'z', '\277'},    /* dot above */
 884     {'/', 'L', '\243'},  {'/', 'l', '\263'},    /* slash */
 885     {'/', 'D', '\320'},  {'/', 'd', '\360'},
 886     {'(', 'A', '\303'},  {'(', 'a', '\343'},    /* breve */
 887     {'\275', 'O', '\325'}, {'\275', 'o', '\365'},       /* double acute */
 888     {'\275', 'U', '\334'}, {'\275', 'u', '\374'},
 889     {'0', 'U', '\332'},  {'0', 'u', '\372'},    /* ring above */
 890         /* iso-8859-3 uses this */
 891     {'/', 'H', '\241'},  {'/', 'h', '\261'},    /* slash */
 892     {'>', 'H', '\246'},  {'>', 'h', '\266'},    /* circumflex */
 893     {'>', 'J', '\254'},  {'>', 'j', '\274'},
 894     {'>', 'C', '\306'},  {'>', 'c', '\346'},
 895     {'>', 'G', '\330'},  {'>', 'g', '\370'},
 896     {'>', 'S', '\336'},  {'>', 's', '\376'},
 897 /*  collision whith G( from iso-8859-9 !!!   */
 898     {'(', 'G', '\253'},  {'(', 'g', '\273'},    /* breve */
 899     {'(', 'U', '\335'},  {'(', 'u', '\375'},
 900 /*  collision whith I. from iso-8859-3 !!!   */
 901     {'.', 'I', '\251'},  {'.', 'i', '\271'},    /* dot above */
 902     {'.', 'C', '\305'},  {'.', 'c', '\345'},
 903     {'.', 'G', '\325'},  {'.', 'g', '\365'},
 904         /* iso-8859-4 uses this */
 905     {',', 'R', '\243'},  {',', 'r', '\263'},    /* cedilla */
 906     {',', 'L', '\246'},  {',', 'l', '\266'},
 907     {',', 'G', '\253'},  {',', 'g', '\273'},
 908     {',', 'N', '\321'},  {',', 'n', '\361'},
 909     {',', 'K', '\323'},  {',', 'k', '\363'},
 910     {'~', 'I', '\245'},  {'~', 'i', '\265'},    /* tilde */
 911     {'-', 'E', '\252'},  {'-', 'e', '\272'},    /* macron */
 912     {'-', 'A', '\300'},  {'-', 'a', '\340'},
 913     {'-', 'I', '\317'},  {'-', 'i', '\357'},
 914     {'-', 'O', '\322'},  {'-', 'o', '\362'},
 915     {'-', 'U', '\336'},  {'-', 'u', '\376'},
 916     {'/', 'T', '\254'},  {'/', 't', '\274'},    /* slash */
 917     {'.', 'E', '\314'},  {'.', 'e', '\344'},    /* dot above */
 918     {';', 'I', '\307'},  {';', 'i', '\347'},    /* ogonek */
 919     {';', 'U', '\331'},  {';', 'u', '\371'},
 920         /* iso-8859-9 uses this */
 921         /* iso-8859-9 has really bad choosen G( S, and I. as they collide
 922          * whith the same letters on other iso-8859-x (that is they are on
 923          * different places :-( ), if you use turkish uncomment these and
 924          * comment out the lines in iso-8859-2 and iso-8859-3 sections
 925          * FIXME: should be dynamic according to chosen language
 926          *        if/when Wine has turkish support.
 927          */
 928 /*  collision whith G( from iso-8859-3 !!!   */
 929 /*  {'(', 'G', '\320'},  {'(', 'g', '\360'}, */ /* breve */
 930 /*  collision whith S, from iso-8859-2 !!! */
 931 /*  {',', 'S', '\336'},  {',', 's', '\376'}, */ /* cedilla */
 932 /*  collision whith I. from iso-8859-3 !!!   */
 933 /*  {'.', 'I', '\335'},  {'.', 'i', '\375'}, */ /* dot above */
 934 };
 935
 936
 937 /***********************************************************************
 938  *              TranslateMessage (USER32.@)
 939  *
 940  * Implementation of TranslateMessage.
 941  *
 942  * TranslateMessage translates virtual-key messages into character-messages,
 943  * as follows :
 944  * WM_KEYDOWN/WM_KEYUP combinations produce a WM_CHAR or WM_DEADCHAR message.
 945  * ditto replacing WM_* with WM_SYS*
 946  * This produces WM_CHAR messages only for keys mapped to ASCII characters
 947  * by the keyboard driver.
 948  *
 949  * If the message is WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP, the
 950  * return value is nonzero, regardless of the translation.
 951  *
 952  */
 953 BOOL WINAPI TranslateMessage( const MSG *msg )
 954 {
 955     static int dead_char;
 956     UINT message;
 957     WCHAR wp[2];
 958     BOOL rc = FALSE;
 959
 960     if (msg->message >= WM_KEYFIRST && msg->message <= WM_KEYLAST)
 961     {
 962         TRACE_(key)("(%s, %04X, %08lX)\n",
 963                     SPY_GetMsgName(msg->message, msg->hwnd), msg->wParam, msg->lParam );
 964
 965         /* Return code must be TRUE no matter what! */
 966         rc = TRUE;
 967     }
 968
 969     if ((msg->message != WM_KEYDOWN) && (msg->message != WM_SYSKEYDOWN)) return rc;
 970
 971     TRACE_(key)("Translating key %s (%04x), scancode %02x\n",
 972                  SPY_GetVKeyName(msg->wParam), msg->wParam, LOBYTE(HIWORD(msg->lParam)));
 973
 974     /* FIXME : should handle ToUnicode yielding 2 */
 975     switch (ToUnicode(msg->wParam, HIWORD(msg->lParam), QueueKeyStateTable, wp, 2, 0))
 976     {
 977     case 1:
 978         message = (msg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
 979         /* Should dead chars handling go in ToAscii ? */
 980         if (dead_char)
 981         {
 982             int i;
 983
 984             if (wp[0] == ' ') wp[0] =  dead_char;
 985             if (dead_char == 0xa2) dead_char = '(';
 986             else if (dead_char == 0xa8) dead_char = '"';
 987             else if (dead_char == 0xb2) dead_char = ';';
 988             else if (dead_char == 0xb4) dead_char = '\'';
 989             else if (dead_char == 0xb7) dead_char = '<';
 990             else if (dead_char == 0xb8) dead_char = ',';
 991             else if (dead_char == 0xff) dead_char = '.';
 992             for (i = 0; i < sizeof(accent_chars)/sizeof(accent_chars[0]); i++)
 993                 if ((accent_chars[i].ac_accent == dead_char) &&
 994                     (accent_chars[i].ac_char == wp[0]))
 995                 {
 996                     wp[0] = accent_chars[i].ac_result;
 997                     break;
 998                 }
 999             dead_char = 0;
1000         }
1001         TRACE_(key)("1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
1002         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
1003         break;
1004
1005     case -1:
1006         message = (msg->message == WM_KEYDOWN) ? WM_DEADCHAR : WM_SYSDEADCHAR;
1007         dead_char = wp[0];
1008         TRACE_(key)("-1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
1009         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
1010         return TRUE;
1011     }
1012     return rc;
1013 }
1014
1015
1016 /***********************************************************************
1017  *              DispatchMessageA (USER32.@)
1018  */
1019 LONG WINAPI DispatchMessageA( const MSG* msg )
1020 {
1021     WND * wndPtr;
1022     LONG retval;
1023     int painting;
1024     WNDPROC winproc;
1025
1026       /* Process timer messages */
1027     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
1028     {
1029         if (msg->lParam)
1030         {
1031 /*            HOOK_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1032
1033             /* before calling window proc, verify whether timer is still valid;
1034                there's a slim chance that the application kills the timer
1035                between GetMessage and DispatchMessage API calls */
1036             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
1037                 return 0; /* invalid winproc */
1038
1039             return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
1040                                    msg->message, msg->wParam, GetTickCount() );
1041         }
1042     }
1043
1044     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
1045     {
1046         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1047         return 0;
1048     }
1049     if (wndPtr == WND_OTHER_PROCESS)
1050     {
1051         if (IsWindow( msg->hwnd ))
1052             ERR( "cannot dispatch msg to other process window %x\n", msg->hwnd );
1053         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1054         return 0;
1055     }
1056     if (!(winproc = wndPtr->winproc))
1057     {
1058         WIN_ReleasePtr( wndPtr );
1059         return 0;
1060     }
1061     painting = (msg->message == WM_PAINT);
1062     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
1063     WIN_ReleasePtr( wndPtr );
1064 /*    hook_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1065
1066     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
1067                       msg->wParam, msg->lParam );
1068     retval = CallWindowProcA( winproc, msg->hwnd, msg->message,
1069                               msg->wParam, msg->lParam );
1070     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
1071                      msg->wParam, msg->lParam );
1072
1073     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
1074     {
1075         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
1076         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
1077         WIN_ReleasePtr( wndPtr );
1078         if (validate)
1079         {
1080             ERR( "BeginPaint not called on WM_PAINT for hwnd %04x!\n", msg->hwnd );
1081             /* Validate the update region to avoid infinite WM_PAINT loop */
1082             RedrawWindow( msg->hwnd, NULL, 0,
1083                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
1084         }
1085     }
1086     return retval;
1087 }
1088
1089
1090 /***********************************************************************
1091  *              DispatchMessageW (USER32.@) Process Message
1092  *
1093  * Process the message specified in the structure *_msg_.
1094  *
1095  * If the lpMsg parameter points to a WM_TIMER message and the
1096  * parameter of the WM_TIMER message is not NULL, the lParam parameter
1097  * points to the function that is called instead of the window
1098  * procedure.
1099  *
1100  * The message must be valid.
1101  *
1102  * RETURNS
1103  *
1104  *   DispatchMessage() returns the result of the window procedure invoked.
1105  *
1106  * CONFORMANCE
1107  *
1108  *   ECMA-234, Win32
1109  *
1110  */
1111 LONG WINAPI DispatchMessageW( const MSG* msg )
1112 {
1113     WND * wndPtr;
1114     LONG retval;
1115     int painting;
1116     WNDPROC winproc;
1117
1118       /* Process timer messages */
1119     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
1120     {
1121         if (msg->lParam)
1122         {
1123 /*            HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1124
1125             /* before calling window proc, verify whether timer is still valid;
1126                there's a slim chance that the application kills the timer
1127                between GetMessage and DispatchMessage API calls */
1128             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
1129                 return 0; /* invalid winproc */
1130
1131             return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
1132                                    msg->message, msg->wParam, GetTickCount() );
1133         }
1134     }
1135
1136     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
1137     {
1138         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1139         return 0;
1140     }
1141     if (wndPtr == WND_OTHER_PROCESS)
1142     {
1143         if (IsWindow( msg->hwnd ))
1144             ERR( "cannot dispatch msg to other process window %x\n", msg->hwnd );
1145         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1146         return 0;
1147     }
1148     if (!(winproc = wndPtr->winproc))
1149     {
1150         WIN_ReleasePtr( wndPtr );
1151         return 0;
1152     }
1153     painting = (msg->message == WM_PAINT);
1154     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
1155     WIN_ReleasePtr( wndPtr );
1156 /*    HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1157
1158     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
1159                       msg->wParam, msg->lParam );
1160     retval = CallWindowProcW( winproc, msg->hwnd, msg->message,
1161                               msg->wParam, msg->lParam );
1162     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
1163                      msg->wParam, msg->lParam );
1164
1165     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
1166     {
1167         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
1168         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
1169         WIN_ReleasePtr( wndPtr );
1170         if (validate)
1171         {
1172             ERR( "BeginPaint not called on WM_PAINT for hwnd %04x!\n", msg->hwnd );
1173             /* Validate the update region to avoid infinite WM_PAINT loop */
1174             RedrawWindow( msg->hwnd, NULL, 0,
1175                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
1176         }
1177     }
1178     return retval;
1179 }
1180
1181
1182 /***********************************************************************
1183  *              RegisterWindowMessage (USER.118)
1184  *              RegisterWindowMessageA (USER32.@)
1185  */
1186 WORD WINAPI RegisterWindowMessageA( LPCSTR str )
1187 {
1188     TRACE("%s\n", str );
1189     return GlobalAddAtomA( str );
1190 }
1191
1192
1193 /***********************************************************************
1194  *              RegisterWindowMessageW (USER32.@)
1195  */
1196 WORD WINAPI RegisterWindowMessageW( LPCWSTR str )
1197 {
1198     TRACE("%p\n", str );
1199     return GlobalAddAtomW( str );
1200 }
1201
1202
1203 /***********************************************************************
1204  *              BroadcastSystemMessage  (USER32.@)
1205  *              BroadcastSystemMessageA (USER32.@)
1206  */
1207 LONG WINAPI BroadcastSystemMessage(
1208         DWORD dwFlags,LPDWORD recipients,UINT uMessage,WPARAM wParam,
1209         LPARAM lParam )
1210 {
1211     if ((*recipients & BSM_APPLICATIONS)||
1212         (*recipients == BSM_ALLCOMPONENTS))
1213     {
1214         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): semi-stub!\n",
1215               dwFlags,*recipients,uMessage,wParam,lParam);
1216         PostMessageA(HWND_BROADCAST,uMessage,wParam,lParam);
1217         return 1;
1218     }
1219     else
1220     {
1221         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): stub!\n",
1222               dwFlags,*recipients,uMessage,wParam,lParam);
1223         return -1;
1224     }
1225 }