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 "input.h"
  40 #include "spy.h"
  41 #include "winpos.h"
  42 #include "dde.h"
  43 #include "queue.h"
  44 #include "winproc.h"
  45 #include "user.h"
  46 #include "thread.h"
  47 #include "controls.h"
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(msg);
  51 WINE_DECLARE_DEBUG_CHANNEL(key);
  52
  53 #define WM_NCMOUSEFIRST         WM_NCMOUSEMOVE
  54 #define WM_NCMOUSELAST          WM_NCMBUTTONDBLCLK
  55
  56 static BYTE QueueKeyStateTable[256];
  57
  58
  59 /***********************************************************************
  60  *           is_keyboard_message
  61  */
  62 inline static BOOL is_keyboard_message( UINT message )
  63 {
  64     return (message >= WM_KEYFIRST && message <= WM_KEYLAST);
  65 }
  66
  67
  68 /***********************************************************************
  69  *           is_mouse_message
  70  */
  71 inline static BOOL is_mouse_message( UINT message )
  72 {
  73     return ((message >= WM_NCMOUSEFIRST && message <= WM_NCMOUSELAST) ||
  74             (message >= WM_MOUSEFIRST && message <= WM_MOUSELAST));
  75 }
  76
  77
  78 /***********************************************************************
  79  *           check_message_filter
  80  */
  81 inline static BOOL check_message_filter( const MSG *msg, HWND hwnd, UINT first, UINT last )
  82 {
  83     if (hwnd)
  84     {
  85         if (msg->hwnd != hwnd && !IsChild( hwnd, msg->hwnd )) return FALSE;
  86     }
  87     if (first || last)
  88     {
  89        return (msg->message >= first && msg->message <= last);
  90     }
  91     return TRUE;
  92 }
  93
  94
  95 /***********************************************************************
  96  *           process_sent_messages
  97  *
  98  * Process all pending sent messages.
  99  */
 100 inline static void process_sent_messages(void)
 101 {
 102     MSG msg;
 103     MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY );
 104 }
 105
 106
 107 /***********************************************************************
 108  *           queue_hardware_message
 109  *
 110  * store a hardware message in the thread queue
 111  */
 112 static void queue_hardware_message( MSG *msg, ULONG_PTR extra_info, enum message_type type )
 113 {
 114     SERVER_START_REQ( send_message )
 115     {
 116         req->type   = type;
 117         req->id     = GetWindowThreadProcessId( msg->hwnd, NULL );
 118         req->win    = msg->hwnd;
 119         req->msg    = msg->message;
 120         req->wparam = msg->wParam;
 121         req->lparam = msg->lParam;
 122         req->x      = msg->pt.x;
 123         req->y      = msg->pt.y;
 124         req->time   = msg->time;
 125         req->info   = extra_info;
 126         req->timeout = 0;
 127         wine_server_call( req );
 128     }
 129     SERVER_END_REQ;
 130 }
 131
 132
 133 /***********************************************************************
 134  *           update_queue_key_state
 135  */
 136 static void update_queue_key_state( UINT msg, WPARAM wp, LPARAM lp )
 137 {
 138     BOOL down = FALSE, iskey = FALSE;
 139     WPARAM dualkey = 0;
 140
 141     switch (msg)
 142     {
 143     case WM_LBUTTONDOWN:
 144         down = TRUE;
 145         /* fall through */
 146     case WM_LBUTTONUP:
 147         wp = VK_LBUTTON;
 148         break;
 149     case WM_MBUTTONDOWN:
 150         down = TRUE;
 151         /* fall through */
 152     case WM_MBUTTONUP:
 153         wp = VK_MBUTTON;
 154         break;
 155     case WM_RBUTTONDOWN:
 156         down = TRUE;
 157         /* fall through */
 158     case WM_RBUTTONUP:
 159         wp = VK_RBUTTON;
 160         break;
 161     case WM_KEYDOWN:
 162     case WM_SYSKEYDOWN:
 163         down = TRUE;
 164         /* fall through */
 165     case WM_KEYUP:
 166     case WM_SYSKEYUP:
 167         wp = wp & 0xff;
 168         iskey = TRUE;
 169         break;
 170     }
 171     if (iskey)
 172     {
 173         switch(wp)
 174         {
 175             case VK_SHIFT:
 176                 dualkey = (HIWORD(lp) & KF_EXTENDED) ? VK_RSHIFT : VK_LSHIFT;
 177                 break;
 178             case VK_CONTROL:
 179                 dualkey = (HIWORD(lp) & KF_EXTENDED) ? VK_RCONTROL : VK_LCONTROL;
 180                 break;
 181             case VK_MENU:
 182                 dualkey = (HIWORD(lp) & KF_EXTENDED) ? VK_RMENU : VK_LMENU;
 183                 break;
 184
 185         }
 186     }
 187     if (down)
 188     {
 189         BYTE *p = &QueueKeyStateTable[wp];
 190         if (!(*p & 0x80)) *p ^= 0x01;
 191         *p |= 0x80;
 192     }
 193     else QueueKeyStateTable[wp] &= ~0x80;
 194     if (dualkey)
 195     { /* also update the "dual" keys properly */
 196         if (down)
 197         {
 198             BYTE *p = &QueueKeyStateTable[dualkey];
 199             if (!(*p & 0x80)) *p ^= 0x01;
 200             *p |= 0x80;
 201         }
 202         else QueueKeyStateTable[dualkey] &= ~0x80;
 203     }
 204 }
 205
 206
 207 /***********************************************************************
 208  *           MSG_SendParentNotify
 209  *
 210  * Send a WM_PARENTNOTIFY to all ancestors of the given window, unless
 211  * the window has the WS_EX_NOPARENTNOTIFY style.
 212  */
 213 static void MSG_SendParentNotify( HWND hwnd, WORD event, WORD idChild, POINT pt )
 214 {
 215     /* pt has to be in the client coordinates of the parent window */
 216     MapWindowPoints( 0, hwnd, &pt, 1 );
 217     for (;;)
 218     {
 219         HWND parent;
 220
 221         if (!(GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD)) break;
 222         if (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) break;
 223         if (!(parent = GetParent(hwnd))) break;
 224         MapWindowPoints( hwnd, parent, &pt, 1 );
 225         hwnd = parent;
 226         SendMessageA( hwnd, WM_PARENTNOTIFY,
 227                       MAKEWPARAM( event, idChild ), MAKELPARAM( pt.x, pt.y ) );
 228     }
 229 }
 230
 231
 232 #if 0  /* this is broken for now, will require proper support in the server */
 233
 234 /***********************************************************************
 235  *          MSG_JournalPlayBackMsg
 236  *
 237  * Get an EVENTMSG struct via call JOURNALPLAYBACK hook function
 238  */
 239 void MSG_JournalPlayBackMsg(void)
 240 {
 241     EVENTMSG tmpMsg;
 242     MSG msg;
 243     LRESULT wtime;
 244     int keyDown,i;
 245
 246     wtime=HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_GETNEXT, 0, (LPARAM)&tmpMsg, TRUE );
 247     /*  TRACE(msg,"Playback wait time =%ld\n",wtime); */
 248     if (wtime<=0)
 249     {
 250         wtime=0;
 251         msg.message = tmpMsg.message;
 252         msg.hwnd    = tmpMsg.hwnd;
 253         msg.time    = tmpMsg.time;
 254         if ((tmpMsg.message >= WM_KEYFIRST) && (tmpMsg.message <= WM_KEYLAST))
 255         {
 256             msg.wParam  = tmpMsg.paramL & 0xFF;
 257             msg.lParam  = MAKELONG(tmpMsg.paramH&0x7ffff,tmpMsg.paramL>>8);
 258             if (tmpMsg.message == WM_KEYDOWN || tmpMsg.message == WM_SYSKEYDOWN)
 259             {
 260                 for (keyDown=i=0; i<256 && !keyDown; i++)
 261                     if (InputKeyStateTable[i] & 0x80)
 262                         keyDown++;
 263                 if (!keyDown)
 264                     msg.lParam |= 0x40000000;
 265                 InputKeyStateTable[msg.wParam] |= 0x80;
 266                 AsyncKeyStateTable[msg.wParam] |= 0x80;
 267             }
 268             else                                       /* WM_KEYUP, WM_SYSKEYUP */
 269             {
 270                 msg.lParam |= 0xC0000000;
 271                 InputKeyStateTable[msg.wParam] &= ~0x80;
 272             }
 273             if (InputKeyStateTable[VK_MENU] & 0x80)
 274                 msg.lParam |= 0x20000000;
 275             if (tmpMsg.paramH & 0x8000)              /*special_key bit*/
 276                 msg.lParam |= 0x01000000;
 277
 278             msg.pt.x = msg.pt.y = 0;
 279             queue_hardware_message( &msg, 0, MSG_HARDWARE_RAW );
 280         }
 281         else if ((tmpMsg.message>= WM_MOUSEFIRST) && (tmpMsg.message <= WM_MOUSELAST))
 282         {
 283             switch (tmpMsg.message)
 284             {
 285             case WM_LBUTTONDOWN:
 286                 InputKeyStateTable[VK_LBUTTON] |= 0x80;
 287                 AsyncKeyStateTable[VK_LBUTTON] |= 0x80;
 288                 break;
 289             case WM_LBUTTONUP:
 290                 InputKeyStateTable[VK_LBUTTON] &= ~0x80;
 291                 break;
 292             case WM_MBUTTONDOWN:
 293                 InputKeyStateTable[VK_MBUTTON] |= 0x80;
 294                 AsyncKeyStateTable[VK_MBUTTON] |= 0x80;
 295                 break;
 296             case WM_MBUTTONUP:
 297                 InputKeyStateTable[VK_MBUTTON] &= ~0x80;
 298                 break;
 299             case WM_RBUTTONDOWN:
 300                 InputKeyStateTable[VK_RBUTTON] |= 0x80;
 301                 AsyncKeyStateTable[VK_RBUTTON] |= 0x80;
 302                 break;
 303             case WM_RBUTTONUP:
 304                 InputKeyStateTable[VK_RBUTTON] &= ~0x80;
 305                 break;
 306             }
 307             SetCursorPos(tmpMsg.paramL,tmpMsg.paramH);
 308             msg.lParam=MAKELONG(tmpMsg.paramL,tmpMsg.paramH);
 309             msg.wParam=0;
 310             if (InputKeyStateTable[VK_LBUTTON] & 0x80) msg.wParam |= MK_LBUTTON;
 311             if (InputKeyStateTable[VK_MBUTTON] & 0x80) msg.wParam |= MK_MBUTTON;
 312             if (InputKeyStateTable[VK_RBUTTON] & 0x80) msg.wParam |= MK_RBUTTON;
 313
 314             msg.pt.x = tmpMsg.paramL;
 315             msg.pt.y = tmpMsg.paramH;
 316             queue_hardware_message( &msg, 0, MSG_HARDWARE_RAW );
 317         }
 318         HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_SKIP, 0, (LPARAM)&tmpMsg, TRUE );
 319     }
 320     else
 321     {
 322         if( tmpMsg.message == WM_QUEUESYNC ) HOOK_CallHooks( WH_CBT, HCBT_QS, 0, 0, TRUE );
 323     }
 324 }
 325 #endif
 326
 327
 328 /***********************************************************************
 329  *          process_raw_keyboard_message
 330  *
 331  * returns TRUE if the contents of 'msg' should be passed to the application
 332  */
 333 static BOOL process_raw_keyboard_message( MSG *msg, ULONG_PTR extra_info )
 334 {
 335     EVENTMSG event;
 336
 337     if (!(msg->hwnd = GetFocus()))
 338     {
 339         /* Send the message to the active window instead,  */
 340         /* translating messages to their WM_SYS equivalent */
 341         msg->hwnd = GetActiveWindow();
 342         if (msg->message < WM_SYSKEYDOWN) msg->message += WM_SYSKEYDOWN - WM_KEYDOWN;
 343     }
 344
 345     event.message = msg->message;
 346     event.hwnd    = msg->hwnd;
 347     event.time    = msg->time;
 348     event.paramL  = (msg->wParam & 0xFF) | (HIWORD(msg->lParam) << 8);
 349     event.paramH  = msg->lParam & 0x7FFF;
 350     if (HIWORD(msg->lParam) & 0x0100) event.paramH |= 0x8000; /* special_key - bit */
 351     HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
 352
 353     /* if we are going to throw away the message, update the queue state now */
 354     if (!msg->hwnd) update_queue_key_state( msg->message, msg->wParam, msg->lParam );
 355
 356     return (msg->hwnd != 0);
 357 }
 358
 359
 360 /***********************************************************************
 361  *          process_cooked_keyboard_message
 362  *
 363  * returns TRUE if the contents of 'msg' should be passed to the application
 364  */
 365 static BOOL process_cooked_keyboard_message( MSG *msg, BOOL remove )
 366 {
 367     if (remove)
 368     {
 369         update_queue_key_state( msg->message, msg->wParam, msg->lParam );
 370
 371         /* Handle F1 key by sending out WM_HELP message */
 372         if ((msg->message == WM_KEYUP) &&
 373             (msg->wParam == VK_F1) &&
 374             (msg->hwnd != GetDesktopWindow()) &&
 375             !MENU_IsMenuActive())
 376         {
 377             HELPINFO hi;
 378             hi.cbSize = sizeof(HELPINFO);
 379             hi.iContextType = HELPINFO_WINDOW;
 380             hi.iCtrlId = GetWindowLongA( msg->hwnd, GWL_ID );
 381             hi.hItemHandle = msg->hwnd;
 382             hi.dwContextId = GetWindowContextHelpId( msg->hwnd );
 383             hi.MousePos = msg->pt;
 384             SendMessageA(msg->hwnd, WM_HELP, 0, (LPARAM)&hi);
 385         }
 386     }
 387
 388     if (HOOK_CallHooks( WH_KEYBOARD, remove ? HC_ACTION : HC_NOREMOVE,
 389                         LOWORD(msg->wParam), msg->lParam, TRUE ))
 390     {
 391         /* skip this message */
 392         HOOK_CallHooks( WH_CBT, HCBT_KEYSKIPPED, LOWORD(msg->wParam), msg->lParam, TRUE );
 393         return FALSE;
 394     }
 395     return TRUE;
 396 }
 397
 398
 399 /***********************************************************************
 400  *          process_raw_mouse_message
 401  *
 402  * returns TRUE if the contents of 'msg' should be passed to the application
 403  */
 404 static BOOL process_raw_mouse_message( MSG *msg, ULONG_PTR extra_info )
 405 {
 406     static MSG clk_msg;
 407
 408     POINT pt;
 409     INT hittest;
 410     EVENTMSG event;
 411     GUITHREADINFO info;
 412
 413     /* find the window to dispatch this mouse message to */
 414
 415     hittest = HTCLIENT;
 416     GetGUIThreadInfo( GetCurrentThreadId(), &info );
 417     if (!(msg->hwnd = info.hwndCapture))
 418     {
 419         /* If no capture HWND, find window which contains the mouse position.
 420          * Also find the position of the cursor hot spot (hittest) */
 421         HWND hWndScope = (HWND)extra_info;
 422
 423         if (!IsWindow(hWndScope)) hWndScope = 0;
 424         if (!(msg->hwnd = WINPOS_WindowFromPoint( hWndScope, msg->pt, &hittest )))
 425             msg->hwnd = GetDesktopWindow();
 426     }
 427
 428     event.message = msg->message;
 429     event.time    = msg->time;
 430     event.hwnd    = msg->hwnd;
 431     event.paramL  = msg->pt.x;
 432     event.paramH  = msg->pt.y;
 433     HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
 434
 435     /* translate double clicks */
 436
 437     if ((msg->message == WM_LBUTTONDOWN) ||
 438         (msg->message == WM_RBUTTONDOWN) ||
 439         (msg->message == WM_MBUTTONDOWN))
 440     {
 441         BOOL update = TRUE;
 442         /* translate double clicks -
 443          * note that ...MOUSEMOVEs can slip in between
 444          * ...BUTTONDOWN and ...BUTTONDBLCLK messages */
 445
 446         if ((info.flags & (GUI_INMENUMODE|GUI_INMOVESIZE)) ||
 447             hittest != HTCLIENT ||
 448             (GetClassLongA( msg->hwnd, GCL_STYLE ) & CS_DBLCLKS))
 449         {
 450            if ((msg->message == clk_msg.message) &&
 451                (msg->hwnd == clk_msg.hwnd) &&
 452                (msg->time - clk_msg.time < GetDoubleClickTime()) &&
 453                (abs(msg->pt.x - clk_msg.pt.x) < GetSystemMetrics(SM_CXDOUBLECLK)/2) &&
 454                (abs(msg->pt.y - clk_msg.pt.y) < GetSystemMetrics(SM_CYDOUBLECLK)/2))
 455            {
 456                msg->message += (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN);
 457                clk_msg.message = 0;
 458                update = FALSE;
 459            }
 460         }
 461         /* update static double click conditions */
 462         if (update) clk_msg = *msg;
 463     }
 464
 465     pt = msg->pt;
 466     /* Note: windows has no concept of a non-client wheel message */
 467     if (hittest != HTCLIENT && msg->message != WM_MOUSEWHEEL)
 468     {
 469         msg->message += WM_NCMOUSEMOVE - WM_MOUSEMOVE;
 470         msg->wParam = hittest;
 471     }
 472     else
 473     {
 474         /* coordinates don't get translated while tracking a menu */
 475         /* FIXME: should differentiate popups and top-level menus */
 476         if (!(info.flags & GUI_INMENUMODE)) ScreenToClient( msg->hwnd, &pt );
 477     }
 478     msg->lParam = MAKELONG( pt.x, pt.y );
 479     return TRUE;
 480 }
 481
 482
 483 /***********************************************************************
 484  *          process_cooked_mouse_message
 485  *
 486  * returns TRUE if the contents of 'msg' should be passed to the application
 487  */
 488 static BOOL process_cooked_mouse_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 489 {
 490     MOUSEHOOKSTRUCT hook;
 491     INT hittest = HTCLIENT;
 492     UINT raw_message = msg->message;
 493     BOOL eatMsg;
 494
 495     if (msg->message >= WM_NCMOUSEFIRST && msg->message <= WM_NCMOUSELAST)
 496     {
 497         raw_message += WM_MOUSEFIRST - WM_NCMOUSEFIRST;
 498         hittest = msg->wParam;
 499     }
 500     if (raw_message == WM_LBUTTONDBLCLK ||
 501         raw_message == WM_RBUTTONDBLCLK ||
 502         raw_message == WM_MBUTTONDBLCLK)
 503     {
 504         raw_message += WM_LBUTTONDOWN - WM_LBUTTONDBLCLK;
 505     }
 506
 507     if (remove) update_queue_key_state( raw_message, 0, 0 );
 508
 509     hook.pt           = msg->pt;
 510     hook.hwnd         = msg->hwnd;
 511     hook.wHitTestCode = hittest;
 512     hook.dwExtraInfo  = extra_info;
 513     if (HOOK_CallHooks( WH_MOUSE, remove ? HC_ACTION : HC_NOREMOVE,
 514                         msg->message, (LPARAM)&hook, TRUE ))
 515     {
 516         hook.pt           = msg->pt;
 517         hook.hwnd         = msg->hwnd;
 518         hook.wHitTestCode = hittest;
 519         hook.dwExtraInfo  = extra_info;
 520         HOOK_CallHooks( WH_CBT, HCBT_CLICKSKIPPED, msg->message, (LPARAM)&hook, TRUE );
 521         return FALSE;
 522     }
 523
 524     if ((hittest == HTERROR) || (hittest == HTNOWHERE))
 525     {
 526         SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
 527                       MAKELONG( hittest, raw_message ));
 528         return FALSE;
 529     }
 530
 531     if (!remove || GetCapture()) return TRUE;
 532
 533     eatMsg = FALSE;
 534
 535     if ((raw_message == WM_LBUTTONDOWN) ||
 536         (raw_message == WM_RBUTTONDOWN) ||
 537         (raw_message == WM_MBUTTONDOWN))
 538     {
 539         /* Send the WM_PARENTNOTIFY,
 540          * note that even for double/nonclient clicks
 541          * notification message is still WM_L/M/RBUTTONDOWN.
 542          */
 543         MSG_SendParentNotify( msg->hwnd, raw_message, 0, msg->pt );
 544
 545         /* Activate the window if needed */
 546
 547         if (msg->hwnd != GetActiveWindow())
 548         {
 549             HWND hwndTop = msg->hwnd;
 550             while (hwndTop)
 551             {
 552                 if ((GetWindowLongW( hwndTop, GWL_STYLE ) & (WS_POPUP|WS_CHILD)) != WS_CHILD) break;
 553                 hwndTop = GetParent( hwndTop );
 554             }
 555
 556             if (hwndTop && hwndTop != GetDesktopWindow())
 557             {
 558                 LONG ret = SendMessageA( msg->hwnd, WM_MOUSEACTIVATE, (WPARAM)hwndTop,
 559                                          MAKELONG( hittest, raw_message ) );
 560                 switch(ret)
 561                 {
 562                 case MA_NOACTIVATEANDEAT:
 563                     eatMsg = TRUE;
 564                     /* fall through */
 565                 case MA_NOACTIVATE:
 566                     break;
 567                 case MA_ACTIVATEANDEAT:
 568                     eatMsg = TRUE;
 569                     /* fall through */
 570                 case MA_ACTIVATE:
 571                 case 0:
 572                     if (!FOCUS_MouseActivate( hwndTop )) eatMsg = TRUE;
 573                     break;
 574                 default:
 575                     WARN( "unknown WM_MOUSEACTIVATE code %ld\n", ret );
 576                     break;
 577                 }
 578             }
 579         }
 580     }
 581
 582     /* send the WM_SETCURSOR message */
 583
 584     /* Windows sends the normal mouse message as the message parameter
 585        in the WM_SETCURSOR message even if it's non-client mouse message */
 586     SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
 587                   MAKELONG( hittest, raw_message ));
 588
 589     return !eatMsg;
 590 }
 591
 592
 593 /***********************************************************************
 594  *          process_hardware_message
 595  *
 596  * returns TRUE if the contents of 'msg' should be passed to the application
 597  */
 598 BOOL MSG_process_raw_hardware_message( MSG *msg, ULONG_PTR extra_info, HWND hwnd_filter,
 599                                        UINT first, UINT last, BOOL remove )
 600 {
 601     if (is_keyboard_message( msg->message ))
 602     {
 603         if (!process_raw_keyboard_message( msg, extra_info )) return FALSE;
 604     }
 605     else if (is_mouse_message( msg->message ))
 606     {
 607         if (!process_raw_mouse_message( msg, extra_info )) return FALSE;
 608     }
 609     else
 610     {
 611         ERR( "unknown message type %x\n", msg->message );
 612         return FALSE;
 613     }
 614
 615     /* check destination thread and filters */
 616     if (!check_message_filter( msg, hwnd_filter, first, last ) ||
 617         !WIN_IsCurrentThread( msg->hwnd ))
 618     {
 619         /* queue it for later, or for another thread */
 620         queue_hardware_message( msg, extra_info, MSG_HARDWARE_COOKED );
 621         return FALSE;
 622     }
 623
 624     /* save the message in the cooked queue if we didn't want to remove it */
 625     if (!remove) queue_hardware_message( msg, extra_info, MSG_HARDWARE_COOKED );
 626     return TRUE;
 627 }
 628
 629
 630 /***********************************************************************
 631  *          MSG_process_cooked_hardware_message
 632  *
 633  * returns TRUE if the contents of 'msg' should be passed to the application
 634  */
 635 BOOL MSG_process_cooked_hardware_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
 636 {
 637     if (is_keyboard_message( msg->message ))
 638         return process_cooked_keyboard_message( msg, remove );
 639
 640     if (is_mouse_message( msg->message ))
 641         return process_cooked_mouse_message( msg, extra_info, remove );
 642
 643     ERR( "unknown message type %x\n", msg->message );
 644     return FALSE;
 645 }
 646
 647
 648 /**********************************************************************
 649  *              GetKeyState (USER.106)
 650  */
 651 INT16 WINAPI GetKeyState16(INT16 vkey)
 652 {
 653     return GetKeyState(vkey);
 654 }
 655
 656
 657 /**********************************************************************
 658  *              GetKeyState (USER32.@)
 659  *
 660  * An application calls the GetKeyState function in response to a
 661  * keyboard-input message.  This function retrieves the state of the key
 662  * at the time the input message was generated.  (SDK 3.1 Vol 2. p 390)
 663  */
 664 SHORT WINAPI GetKeyState(INT vkey)
 665 {
 666     INT retval;
 667
 668     if (vkey >= 'a' && vkey <= 'z') vkey += 'A' - 'a';
 669     retval = ((WORD)(QueueKeyStateTable[vkey] & 0x80) << 8 ) |
 670               (QueueKeyStateTable[vkey] & 0x80) |
 671               (QueueKeyStateTable[vkey] & 0x01);
 672     TRACE("key (0x%x) -> %x\n", vkey, retval);
 673     return retval;
 674 }
 675
 676
 677 /**********************************************************************
 678  *              GetKeyboardState (USER.222)
 679  *              GetKeyboardState (USER32.@)
 680  *
 681  * An application calls the GetKeyboardState function in response to a
 682  * keyboard input message.  This function retrieves the state of the keyboard
 683  * at the time the input message was generated.  (SDK 3.1 Vol 2. p 387)
 684  */
 685 BOOL WINAPI GetKeyboardState(LPBYTE lpKeyState)
 686 {
 687     TRACE_(key)("(%p)\n", lpKeyState);
 688     if (lpKeyState) memcpy(lpKeyState, QueueKeyStateTable, 256);
 689     return TRUE;
 690 }
 691
 692
 693 /**********************************************************************
 694  *              SetKeyboardState (USER.223)
 695  *              SetKeyboardState (USER32.@)
 696  */
 697 BOOL WINAPI SetKeyboardState(LPBYTE lpKeyState)
 698 {
 699     TRACE_(key)("(%p)\n", lpKeyState);
 700     if (lpKeyState) memcpy(QueueKeyStateTable, lpKeyState, 256);
 701     return TRUE;
 702 }
 703
 704
 705 /***********************************************************************
 706  *              WaitMessage (USER.112) Suspend thread pending messages
 707  *              WaitMessage (USER32.@) Suspend thread pending messages
 708  *
 709  * WaitMessage() suspends a thread until events appear in the thread's
 710  * queue.
 711  */
 712 BOOL WINAPI WaitMessage(void)
 713 {
 714     return (MsgWaitForMultipleObjectsEx( 0, NULL, INFINITE, QS_ALLINPUT, 0 ) != WAIT_FAILED);
 715 }
 716
 717
 718 /***********************************************************************
 719  *              MsgWaitForMultipleObjectsEx   (USER32.@)
 720  */
 721 DWORD WINAPI MsgWaitForMultipleObjectsEx( DWORD count, CONST HANDLE *pHandles,
 722                                           DWORD timeout, DWORD mask, DWORD flags )
 723 {
 724     HANDLE handles[MAXIMUM_WAIT_OBJECTS];
 725     DWORD i, ret, lock;
 726     MESSAGEQUEUE *msgQueue;
 727
 728     if (count > MAXIMUM_WAIT_OBJECTS-1)
 729     {
 730         SetLastError( ERROR_INVALID_PARAMETER );
 731         return WAIT_FAILED;
 732     }
 733
 734     if (!(msgQueue = QUEUE_Current())) return WAIT_FAILED;
 735
 736     /* set the queue mask */
 737     SERVER_START_REQ( set_queue_mask )
 738     {
 739         req->wake_mask    = (flags & MWMO_INPUTAVAILABLE) ? mask : 0;
 740         req->changed_mask = mask;
 741         req->skip_wait    = 0;
 742         wine_server_call( req );
 743     }
 744     SERVER_END_REQ;
 745
 746     /* Add the thread event to the handle list */
 747     for (i = 0; i < count; i++) handles[i] = pHandles[i];
 748     handles[count] = msgQueue->server_queue;
 749
 750     ReleaseThunkLock( &lock );
 751     if (USER_Driver.pMsgWaitForMultipleObjectsEx)
 752     {
 753         ret = USER_Driver.pMsgWaitForMultipleObjectsEx( count+1, handles, timeout, mask, flags );
 754         if (ret == count+1) ret = count; /* pretend the msg queue is ready */
 755     }
 756     else
 757         ret = WaitForMultipleObjectsEx( count+1, handles, flags & MWMO_WAITALL,
 758                                         timeout, flags & MWMO_ALERTABLE );
 759     if (lock) RestoreThunkLock( lock );
 760     return ret;
 761 }
 762
 763
 764 /***********************************************************************
 765  *              MsgWaitForMultipleObjects (USER32.@)
 766  */
 767 DWORD WINAPI MsgWaitForMultipleObjects( DWORD count, CONST HANDLE *handles,
 768                                         BOOL wait_all, DWORD timeout, DWORD mask )
 769 {
 770     return MsgWaitForMultipleObjectsEx( count, handles, timeout, mask,
 771                                         wait_all ? MWMO_WAITALL : 0 );
 772 }
 773
 774
 775 /***********************************************************************
 776  *              WaitForInputIdle (USER32.@)
 777  */
 778 DWORD WINAPI WaitForInputIdle( HANDLE hProcess, DWORD dwTimeOut )
 779 {
 780     DWORD start_time, elapsed, ret;
 781     HANDLE idle_event = (HANDLE)-1;
 782
 783     SERVER_START_REQ( wait_input_idle )
 784     {
 785         req->handle = hProcess;
 786         req->timeout = dwTimeOut;
 787         if (!(ret = wine_server_call_err( req ))) idle_event = reply->event;
 788     }
 789     SERVER_END_REQ;
 790     if (ret) return WAIT_FAILED;  /* error */
 791     if (!idle_event) return 0;  /* no event to wait on */
 792
 793     start_time = GetTickCount();
 794     elapsed = 0;
 795
 796     TRACE("waiting for %x\n", idle_event );
 797     do
 798     {
 799         ret = MsgWaitForMultipleObjects ( 1, &idle_event, FALSE, dwTimeOut - elapsed, QS_SENDMESSAGE );
 800         switch (ret)
 801         {
 802         case WAIT_OBJECT_0+1:
 803             process_sent_messages();
 804             break;
 805         case WAIT_TIMEOUT:
 806         case WAIT_FAILED:
 807             TRACE("timeout or error\n");
 808             return ret;
 809         default:
 810             TRACE("finished\n");
 811             return 0;
 812         }
 813         if (dwTimeOut != INFINITE)
 814         {
 815             elapsed = GetTickCount() - start_time;
 816             if (elapsed > dwTimeOut)
 817                 break;
 818         }
 819     }
 820     while (1);
 821
 822     return WAIT_TIMEOUT;
 823 }
 824
 825
 826 /***********************************************************************
 827  *              UserYield (USER.332)
 828  */
 829 void WINAPI UserYield16(void)
 830 {
 831    DWORD count;
 832
 833     /* Handle sent messages */
 834     process_sent_messages();
 835
 836     /* Yield */
 837     ReleaseThunkLock(&count);
 838     if (count)
 839     {
 840         RestoreThunkLock(count);
 841         /* Handle sent messages again */
 842         process_sent_messages();
 843     }
 844 }
 845
 846
 847 struct accent_char
 848 {
 849     BYTE ac_accent;
 850     BYTE ac_char;
 851     BYTE ac_result;
 852 };
 853
 854 static const struct accent_char accent_chars[] =
 855 {
 856 /* A good idea should be to read /usr/X11/lib/X11/locale/iso8859-x/Compose */
 857     {'`', 'A', '\300'},  {'`', 'a', '\340'},
 858     {'\'', 'A', '\301'}, {'\'', 'a', '\341'},
 859     {'^', 'A', '\302'},  {'^', 'a', '\342'},
 860     {'~', 'A', '\303'},  {'~', 'a', '\343'},
 861     {'"', 'A', '\304'},  {'"', 'a', '\344'},
 862     {'O', 'A', '\305'},  {'o', 'a', '\345'},
 863     {'0', 'A', '\305'},  {'0', 'a', '\345'},
 864     {'A', 'A', '\305'},  {'a', 'a', '\345'},
 865     {'A', 'E', '\306'},  {'a', 'e', '\346'},
 866     {',', 'C', '\307'},  {',', 'c', '\347'},
 867     {'`', 'E', '\310'},  {'`', 'e', '\350'},
 868     {'\'', 'E', '\311'}, {'\'', 'e', '\351'},
 869     {'^', 'E', '\312'},  {'^', 'e', '\352'},
 870     {'"', 'E', '\313'},  {'"', 'e', '\353'},
 871     {'`', 'I', '\314'},  {'`', 'i', '\354'},
 872     {'\'', 'I', '\315'}, {'\'', 'i', '\355'},
 873     {'^', 'I', '\316'},  {'^', 'i', '\356'},
 874     {'"', 'I', '\317'},  {'"', 'i', '\357'},
 875     {'-', 'D', '\320'},  {'-', 'd', '\360'},
 876     {'~', 'N', '\321'},  {'~', 'n', '\361'},
 877     {'`', 'O', '\322'},  {'`', 'o', '\362'},
 878     {'\'', 'O', '\323'}, {'\'', 'o', '\363'},
 879     {'^', 'O', '\324'},  {'^', 'o', '\364'},
 880     {'~', 'O', '\325'},  {'~', 'o', '\365'},
 881     {'"', 'O', '\326'},  {'"', 'o', '\366'},
 882     {'/', 'O', '\330'},  {'/', 'o', '\370'},
 883     {'`', 'U', '\331'},  {'`', 'u', '\371'},
 884     {'\'', 'U', '\332'}, {'\'', 'u', '\372'},
 885     {'^', 'U', '\333'},  {'^', 'u', '\373'},
 886     {'"', 'U', '\334'},  {'"', 'u', '\374'},
 887     {'\'', 'Y', '\335'}, {'\'', 'y', '\375'},
 888     {'T', 'H', '\336'},  {'t', 'h', '\376'},
 889     {'s', 's', '\337'},  {'"', 'y', '\377'},
 890     {'s', 'z', '\337'},  {'i', 'j', '\377'},
 891         /* iso-8859-2 uses this */
 892     {'<', 'L', '\245'},  {'<', 'l', '\265'},    /* caron */
 893     {'<', 'S', '\251'},  {'<', 's', '\271'},
 894     {'<', 'T', '\253'},  {'<', 't', '\273'},
 895     {'<', 'Z', '\256'},  {'<', 'z', '\276'},
 896     {'<', 'C', '\310'},  {'<', 'c', '\350'},
 897     {'<', 'E', '\314'},  {'<', 'e', '\354'},
 898     {'<', 'D', '\317'},  {'<', 'd', '\357'},
 899     {'<', 'N', '\322'},  {'<', 'n', '\362'},
 900     {'<', 'R', '\330'},  {'<', 'r', '\370'},
 901     {';', 'A', '\241'},  {';', 'a', '\261'},    /* ogonek */
 902     {';', 'E', '\312'},  {';', 'e', '\332'},
 903     {'\'', 'Z', '\254'}, {'\'', 'z', '\274'},   /* acute */
 904     {'\'', 'R', '\300'}, {'\'', 'r', '\340'},
 905     {'\'', 'L', '\305'}, {'\'', 'l', '\345'},
 906     {'\'', 'C', '\306'}, {'\'', 'c', '\346'},
 907     {'\'', 'N', '\321'}, {'\'', 'n', '\361'},
 908 /*  collision whith S, from iso-8859-9 !!! */
 909     {',', 'S', '\252'},  {',', 's', '\272'},    /* cedilla */
 910     {',', 'T', '\336'},  {',', 't', '\376'},
 911     {'.', 'Z', '\257'},  {'.', 'z', '\277'},    /* dot above */
 912     {'/', 'L', '\243'},  {'/', 'l', '\263'},    /* slash */
 913     {'/', 'D', '\320'},  {'/', 'd', '\360'},
 914     {'(', 'A', '\303'},  {'(', 'a', '\343'},    /* breve */
 915     {'\275', 'O', '\325'}, {'\275', 'o', '\365'},       /* double acute */
 916     {'\275', 'U', '\334'}, {'\275', 'u', '\374'},
 917     {'0', 'U', '\332'},  {'0', 'u', '\372'},    /* ring above */
 918         /* iso-8859-3 uses this */
 919     {'/', 'H', '\241'},  {'/', 'h', '\261'},    /* slash */
 920     {'>', 'H', '\246'},  {'>', 'h', '\266'},    /* circumflex */
 921     {'>', 'J', '\254'},  {'>', 'j', '\274'},
 922     {'>', 'C', '\306'},  {'>', 'c', '\346'},
 923     {'>', 'G', '\330'},  {'>', 'g', '\370'},
 924     {'>', 'S', '\336'},  {'>', 's', '\376'},
 925 /*  collision whith G( from iso-8859-9 !!!   */
 926     {'(', 'G', '\253'},  {'(', 'g', '\273'},    /* breve */
 927     {'(', 'U', '\335'},  {'(', 'u', '\375'},
 928 /*  collision whith I. from iso-8859-3 !!!   */
 929     {'.', 'I', '\251'},  {'.', 'i', '\271'},    /* dot above */
 930     {'.', 'C', '\305'},  {'.', 'c', '\345'},
 931     {'.', 'G', '\325'},  {'.', 'g', '\365'},
 932         /* iso-8859-4 uses this */
 933     {',', 'R', '\243'},  {',', 'r', '\263'},    /* cedilla */
 934     {',', 'L', '\246'},  {',', 'l', '\266'},
 935     {',', 'G', '\253'},  {',', 'g', '\273'},
 936     {',', 'N', '\321'},  {',', 'n', '\361'},
 937     {',', 'K', '\323'},  {',', 'k', '\363'},
 938     {'~', 'I', '\245'},  {'~', 'i', '\265'},    /* tilde */
 939     {'-', 'E', '\252'},  {'-', 'e', '\272'},    /* macron */
 940     {'-', 'A', '\300'},  {'-', 'a', '\340'},
 941     {'-', 'I', '\317'},  {'-', 'i', '\357'},
 942     {'-', 'O', '\322'},  {'-', 'o', '\362'},
 943     {'-', 'U', '\336'},  {'-', 'u', '\376'},
 944     {'/', 'T', '\254'},  {'/', 't', '\274'},    /* slash */
 945     {'.', 'E', '\314'},  {'.', 'e', '\344'},    /* dot above */
 946     {';', 'I', '\307'},  {';', 'i', '\347'},    /* ogonek */
 947     {';', 'U', '\331'},  {';', 'u', '\371'},
 948         /* iso-8859-9 uses this */
 949         /* iso-8859-9 has really bad choosen G( S, and I. as they collide
 950          * whith the same letters on other iso-8859-x (that is they are on
 951          * different places :-( ), if you use turkish uncomment these and
 952          * comment out the lines in iso-8859-2 and iso-8859-3 sections
 953          * FIXME: should be dynamic according to chosen language
 954          *        if/when Wine has turkish support.
 955          */
 956 /*  collision whith G( from iso-8859-3 !!!   */
 957 /*  {'(', 'G', '\320'},  {'(', 'g', '\360'}, */ /* breve */
 958 /*  collision whith S, from iso-8859-2 !!! */
 959 /*  {',', 'S', '\336'},  {',', 's', '\376'}, */ /* cedilla */
 960 /*  collision whith I. from iso-8859-3 !!!   */
 961 /*  {'.', 'I', '\335'},  {'.', 'i', '\375'}, */ /* dot above */
 962 };
 963
 964
 965 /***********************************************************************
 966  *              TranslateMessage (USER32.@)
 967  *
 968  * Implementation of TranslateMessage.
 969  *
 970  * TranslateMessage translates virtual-key messages into character-messages,
 971  * as follows :
 972  * WM_KEYDOWN/WM_KEYUP combinations produce a WM_CHAR or WM_DEADCHAR message.
 973  * ditto replacing WM_* with WM_SYS*
 974  * This produces WM_CHAR messages only for keys mapped to ASCII characters
 975  * by the keyboard driver.
 976  *
 977  * If the message is WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP, the
 978  * return value is nonzero, regardless of the translation.
 979  *
 980  */
 981 BOOL WINAPI TranslateMessage( const MSG *msg )
 982 {
 983     static int dead_char;
 984     UINT message;
 985     WCHAR wp[2];
 986     BOOL rc = FALSE;
 987
 988     if (msg->message >= WM_KEYFIRST && msg->message <= WM_KEYLAST)
 989     {
 990         TRACE_(key)("(%s, %04X, %08lX)\n",
 991                     SPY_GetMsgName(msg->message, msg->hwnd), msg->wParam, msg->lParam );
 992
 993         /* Return code must be TRUE no matter what! */
 994         rc = TRUE;
 995     }
 996
 997     if ((msg->message != WM_KEYDOWN) && (msg->message != WM_SYSKEYDOWN)) return rc;
 998
 999     TRACE_(key)("Translating key %s (%04x), scancode %02x\n",
1000                  SPY_GetVKeyName(msg->wParam), msg->wParam, LOBYTE(HIWORD(msg->lParam)));
1001
1002     /* FIXME : should handle ToUnicode yielding 2 */
1003     switch (ToUnicode(msg->wParam, HIWORD(msg->lParam), QueueKeyStateTable, wp, 2, 0))
1004     {
1005     case 1:
1006         message = (msg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
1007         /* Should dead chars handling go in ToAscii ? */
1008         if (dead_char)
1009         {
1010             int i;
1011
1012             if (wp[0] == ' ') wp[0] =  dead_char;
1013             if (dead_char == 0xa2) dead_char = '(';
1014             else if (dead_char == 0xa8) dead_char = '"';
1015             else if (dead_char == 0xb2) dead_char = ';';
1016             else if (dead_char == 0xb4) dead_char = '\'';
1017             else if (dead_char == 0xb7) dead_char = '<';
1018             else if (dead_char == 0xb8) dead_char = ',';
1019             else if (dead_char == 0xff) dead_char = '.';
1020             for (i = 0; i < sizeof(accent_chars)/sizeof(accent_chars[0]); i++)
1021                 if ((accent_chars[i].ac_accent == dead_char) &&
1022                     (accent_chars[i].ac_char == wp[0]))
1023                 {
1024                     wp[0] = accent_chars[i].ac_result;
1025                     break;
1026                 }
1027             dead_char = 0;
1028         }
1029         TRACE_(key)("1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
1030         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
1031         break;
1032
1033     case -1:
1034         message = (msg->message == WM_KEYDOWN) ? WM_DEADCHAR : WM_SYSDEADCHAR;
1035         dead_char = wp[0];
1036         TRACE_(key)("-1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
1037         PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
1038         return TRUE;
1039     }
1040     return rc;
1041 }
1042
1043
1044 /***********************************************************************
1045  *              DispatchMessageA (USER32.@)
1046  */
1047 LONG WINAPI DispatchMessageA( const MSG* msg )
1048 {
1049     WND * wndPtr;
1050     LONG retval;
1051     int painting;
1052     WNDPROC winproc;
1053
1054       /* Process timer messages */
1055     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
1056     {
1057         if (msg->lParam)
1058         {
1059 /*            HOOK_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1060
1061             /* before calling window proc, verify whether timer is still valid;
1062                there's a slim chance that the application kills the timer
1063                between GetMessage and DispatchMessage API calls */
1064             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
1065                 return 0; /* invalid winproc */
1066
1067             return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
1068                                    msg->message, msg->wParam, GetTickCount() );
1069         }
1070     }
1071
1072     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
1073     {
1074         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1075         return 0;
1076     }
1077     if (wndPtr == WND_OTHER_PROCESS)
1078     {
1079         if (IsWindow( msg->hwnd ))
1080             ERR( "cannot dispatch msg to other process window %x\n", msg->hwnd );
1081         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1082         return 0;
1083     }
1084     if (!(winproc = wndPtr->winproc))
1085     {
1086         WIN_ReleasePtr( wndPtr );
1087         return 0;
1088     }
1089     painting = (msg->message == WM_PAINT);
1090     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
1091     WIN_ReleasePtr( wndPtr );
1092 /*    hook_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1093
1094     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
1095                       msg->wParam, msg->lParam );
1096     retval = CallWindowProcA( winproc, msg->hwnd, msg->message,
1097                               msg->wParam, msg->lParam );
1098     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
1099                      msg->wParam, msg->lParam );
1100
1101     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
1102     {
1103         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
1104         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
1105         WIN_ReleasePtr( wndPtr );
1106         if (validate)
1107         {
1108             ERR( "BeginPaint not called on WM_PAINT for hwnd %04x!\n", msg->hwnd );
1109             /* Validate the update region to avoid infinite WM_PAINT loop */
1110             RedrawWindow( msg->hwnd, NULL, 0,
1111                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
1112         }
1113     }
1114     return retval;
1115 }
1116
1117
1118 /***********************************************************************
1119  *              DispatchMessageW (USER32.@) Process Message
1120  *
1121  * Process the message specified in the structure *_msg_.
1122  *
1123  * If the lpMsg parameter points to a WM_TIMER message and the
1124  * parameter of the WM_TIMER message is not NULL, the lParam parameter
1125  * points to the function that is called instead of the window
1126  * procedure.
1127  *
1128  * The message must be valid.
1129  *
1130  * RETURNS
1131  *
1132  *   DispatchMessage() returns the result of the window procedure invoked.
1133  *
1134  * CONFORMANCE
1135  *
1136  *   ECMA-234, Win32
1137  *
1138  */
1139 LONG WINAPI DispatchMessageW( const MSG* msg )
1140 {
1141     WND * wndPtr;
1142     LONG retval;
1143     int painting;
1144     WNDPROC winproc;
1145
1146       /* Process timer messages */
1147     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
1148     {
1149         if (msg->lParam)
1150         {
1151 /*            HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1152
1153             /* before calling window proc, verify whether timer is still valid;
1154                there's a slim chance that the application kills the timer
1155                between GetMessage and DispatchMessage API calls */
1156             if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
1157                 return 0; /* invalid winproc */
1158
1159             return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
1160                                    msg->message, msg->wParam, GetTickCount() );
1161         }
1162     }
1163
1164     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
1165     {
1166         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1167         return 0;
1168     }
1169     if (wndPtr == WND_OTHER_PROCESS)
1170     {
1171         if (IsWindow( msg->hwnd ))
1172             ERR( "cannot dispatch msg to other process window %x\n", msg->hwnd );
1173         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
1174         return 0;
1175     }
1176     if (!(winproc = wndPtr->winproc))
1177     {
1178         WIN_ReleasePtr( wndPtr );
1179         return 0;
1180     }
1181     painting = (msg->message == WM_PAINT);
1182     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
1183     WIN_ReleasePtr( wndPtr );
1184 /*    HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
1185
1186     SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
1187                       msg->wParam, msg->lParam );
1188     retval = CallWindowProcW( winproc, msg->hwnd, msg->message,
1189                               msg->wParam, msg->lParam );
1190     SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
1191                      msg->wParam, msg->lParam );
1192
1193     if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
1194     {
1195         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
1196         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
1197         WIN_ReleasePtr( wndPtr );
1198         if (validate)
1199         {
1200             ERR( "BeginPaint not called on WM_PAINT for hwnd %04x!\n", msg->hwnd );
1201             /* Validate the update region to avoid infinite WM_PAINT loop */
1202             RedrawWindow( msg->hwnd, NULL, 0,
1203                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
1204         }
1205     }
1206     return retval;
1207 }
1208
1209
1210 /***********************************************************************
1211  *              RegisterWindowMessage (USER.118)
1212  *              RegisterWindowMessageA (USER32.@)
1213  */
1214 WORD WINAPI RegisterWindowMessageA( LPCSTR str )
1215 {
1216     TRACE("%s\n", str );
1217     return GlobalAddAtomA( str );
1218 }
1219
1220
1221 /***********************************************************************
1222  *              RegisterWindowMessageW (USER32.@)
1223  */
1224 WORD WINAPI RegisterWindowMessageW( LPCWSTR str )
1225 {
1226     TRACE("%p\n", str );
1227     return GlobalAddAtomW( str );
1228 }
1229
1230
1231 /***********************************************************************
1232  *              BroadcastSystemMessage  (USER32.@)
1233  *              BroadcastSystemMessageA (USER32.@)
1234  */
1235 LONG WINAPI BroadcastSystemMessage(
1236         DWORD dwFlags,LPDWORD recipients,UINT uMessage,WPARAM wParam,
1237         LPARAM lParam )
1238 {
1239     if ((*recipients & BSM_APPLICATIONS)||
1240         (*recipients == BSM_ALLCOMPONENTS))
1241     {
1242         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): semi-stub!\n",
1243               dwFlags,*recipients,uMessage,wParam,lParam);
1244         PostMessageA(HWND_BROADCAST,uMessage,wParam,lParam);
1245         return 1;
1246     }
1247     else
1248     {
1249         FIXME("(%08lx,%08lx,%08x,%08x,%08lx): stub!\n",
1250               dwFlags,*recipients,uMessage,wParam,lParam);
1251         return -1;
1252     }
1253 }