subsystems/win32/win32k/ntuser/window.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * PURPOSE:          Windows
   5  * FILE:             subsystems/win32/win32k/ntuser/window.c
   6  * PROGRAMER:        Casper S. Hornstrup (chorns@users.sourceforge.net)
   7  * REVISION HISTORY:
   8  *       06-06-2001  CSH  Created
   9  */
  10
  11 /* INCLUDES ******************************************************************/
  12
  13 #include <win32k.h>
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 #define POINT_IN_RECT(p, r) (((r.bottom >= p.y) && (r.top <= p.y))&&((r.left <= p.x )&&( r.right >= p.x )))
  19
  20 /* PRIVATE FUNCTIONS **********************************************************/
  21
  22 /*
  23  * InitWindowImpl
  24  *
  25  * Initialize windowing implementation.
  26  */
  27
  28 INIT_FUNCTION
  29 NTSTATUS
  30 NTAPI
  31 InitWindowImpl(VOID)
  32 {
  33    return STATUS_SUCCESS;
  34 }
  35
  36 /*
  37  * CleanupWindowImpl
  38  *
  39  * Cleanup windowing implementation.
  40  */
  41
  42 NTSTATUS FASTCALL
  43 CleanupWindowImpl(VOID)
  44 {
  45    return STATUS_SUCCESS;
  46 }
  47
  48 /* HELPER FUNCTIONS ***********************************************************/
  49
  50 BOOL FASTCALL UserUpdateUiState(PWND Wnd, WPARAM wParam)
  51 {
  52     WORD Action = LOWORD(wParam);
  53     WORD Flags = HIWORD(wParam);
  54
  55     if (Flags & ~(UISF_HIDEFOCUS | UISF_HIDEACCEL | UISF_ACTIVE))
  56     {
  57         EngSetLastError(ERROR_INVALID_PARAMETER);
  58         return FALSE;
  59     }
  60
  61     switch (Action)
  62     {
  63         case UIS_INITIALIZE:
  64             EngSetLastError(ERROR_INVALID_PARAMETER);
  65             return FALSE;
  66
  67         case UIS_SET:
  68             if (Flags & UISF_HIDEFOCUS)
  69                 Wnd->HideFocus = TRUE;
  70             if (Flags & UISF_HIDEACCEL)
  71                 Wnd->HideAccel = TRUE;
  72             break;
  73
  74         case UIS_CLEAR:
  75             if (Flags & UISF_HIDEFOCUS)
  76                 Wnd->HideFocus = FALSE;
  77             if (Flags & UISF_HIDEACCEL)
  78                 Wnd->HideAccel = FALSE;
  79             break;
  80     }
  81
  82     return TRUE;
  83 }
  84
  85 PWND FASTCALL IntGetWindowObject(HWND hWnd)
  86 {
  87    PWND Window;
  88
  89    if (!hWnd) return NULL;
  90
  91    Window = UserGetWindowObject(hWnd);
  92    if (Window)
  93    {
  94       ASSERT(Window->head.cLockObj >= 0);
  95
  96       Window->head.cLockObj++;
  97    }
  98    return Window;
  99 }
 100
 101 /* temp hack */
 102 PWND FASTCALL UserGetWindowObject(HWND hWnd)
 103 {
 104    PTHREADINFO ti;
 105    PWND Window;
 106
 107    if (PsGetCurrentProcess() != PsInitialSystemProcess)
 108    {
 109        ti = GetW32ThreadInfo();
 110        if (ti == NULL)
 111        {
 112           EngSetLastError(ERROR_ACCESS_DENIED);
 113           return NULL;
 114        }
 115    }
 116
 117    if (!hWnd)
 118    {
 119       EngSetLastError(ERROR_INVALID_WINDOW_HANDLE);
 120       return NULL;
 121    }
 122
 123    Window = (PWND)UserGetObject(gHandleTable, hWnd, otWindow);
 124    if (!Window || 0 != (Window->state & WNDS_DESTROYED))
 125    {
 126       EngSetLastError(ERROR_INVALID_WINDOW_HANDLE);
 127       return NULL;
 128    }
 129
 130    ASSERT(Window->head.cLockObj >= 0);
 131
 132    return Window;
 133 }
 134
 135
 136 /*
 137  * IntIsWindow
 138  *
 139  * The function determines whether the specified window handle identifies
 140  * an existing window.
 141  *
 142  * Parameters
 143  *    hWnd
 144  *       Handle to the window to test.
 145  *
 146  * Return Value
 147  *    If the window handle identifies an existing window, the return value
 148  *    is TRUE. If the window handle does not identify an existing window,
 149  *    the return value is FALSE.
 150  */
 151
 152 BOOL FASTCALL
 153 IntIsWindow(HWND hWnd)
 154 {
 155    PWND Window;
 156
 157    if (!(Window = UserGetWindowObject(hWnd)))
 158       return FALSE;
 159
 160    return TRUE;
 161 }
 162
 163
 164 PWND FASTCALL
 165 IntGetParent(PWND Wnd)
 166 {
 167    if (Wnd->style & WS_POPUP)
 168    {
 169        return Wnd->spwndOwner;
 170    }
 171    else if (Wnd->style & WS_CHILD)
 172    {
 173       return Wnd->spwndParent;
 174    }
 175
 176    return NULL;
 177 }
 178
 179 /*
 180  * IntWinListChildren
 181  *
 182  * Compile a list of all child window handles from given window.
 183  *
 184  * Remarks
 185  *    This function is similar to Wine WIN_ListChildren. The caller
 186  *    must free the returned list with ExFreePool.
 187  */
 188
 189 HWND* FASTCALL
 190 IntWinListChildren(PWND Window)
 191 {
 192    PWND Child;
 193    HWND *List;
 194    UINT Index, NumChildren = 0;
 195
 196    if (!Window) return NULL;
 197
 198    for (Child = Window->spwndChild; Child; Child = Child->spwndNext)
 199       ++NumChildren;
 200
 201    List = ExAllocatePoolWithTag(PagedPool, (NumChildren + 1) * sizeof(HWND), USERTAG_WINDOWLIST);
 202    if(!List)
 203    {
 204       DPRINT1("Failed to allocate memory for children array\n");
 205       EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
 206       return NULL;
 207    }
 208    for (Child = Window->spwndChild, Index = 0;
 209          Child != NULL;
 210          Child = Child->spwndNext, ++Index)
 211       List[Index] = Child->head.h;
 212    List[Index] = NULL;
 213
 214    return List;
 215 }
 216
 217 /***********************************************************************
 218  *           IntSendDestroyMsg
 219  */
 220 static void IntSendDestroyMsg(HWND hWnd)
 221 {
 222
 223    PWND Window;
 224 #if 0 /* FIXME */
 225
 226    GUITHREADINFO info;
 227
 228    if (GetGUIThreadInfo(GetCurrentThreadId(), &info))
 229    {
 230       if (hWnd == info.hwndCaret)
 231       {
 232          DestroyCaret();
 233       }
 234    }
 235 #endif
 236
 237    Window = UserGetWindowObject(hWnd);
 238    if (Window)
 239    {
 240 //      USER_REFERENCE_ENTRY Ref;
 241 //      UserRefObjectCo(Window, &Ref);
 242
 243       if (!Window->spwndOwner && !IntGetParent(Window))
 244       {
 245          co_IntShellHookNotify(HSHELL_WINDOWDESTROYED, (LPARAM) hWnd);
 246       }
 247
 248 //      UserDerefObjectCo(Window);
 249    }
 250
 251    /* The window could already be destroyed here */
 252
 253    /*
 254     * Send the WM_DESTROY to the window.
 255     */
 256
 257    co_IntSendMessage(hWnd, WM_DESTROY, 0, 0);
 258
 259    /*
 260     * This WM_DESTROY message can trigger re-entrant calls to DestroyWindow
 261     * make sure that the window still exists when we come back.
 262     */
 263 #if 0 /* FIXME */
 264
 265    if (IsWindow(Wnd))
 266    {
 267       HWND* pWndArray;
 268       int i;
 269
 270       if (!(pWndArray = WIN_ListChildren( hwnd )))
 271          return;
 272
 273       /* start from the end (FIXME: is this needed?) */
 274       for (i = 0; pWndArray[i]; i++)
 275          ;
 276
 277       while (--i >= 0)
 278       {
 279          if (IsWindow( pWndArray[i] ))
 280             WIN_SendDestroyMsg( pWndArray[i] );
 281       }
 282       HeapFree(GetProcessHeap(), 0, pWndArray);
 283    }
 284    else
 285    {
 286       DPRINT("destroyed itself while in WM_DESTROY!\n");
 287    }
 288 #endif
 289 }
 290
 291 static VOID
 292 UserFreeWindowInfo(PTHREADINFO ti, PWND Wnd)
 293 {
 294     PCLIENTINFO ClientInfo = GetWin32ClientInfo();
 295
 296     if (!Wnd) return;
 297
 298     if (ClientInfo->CallbackWnd.pWnd == DesktopHeapAddressToUser(Wnd))
 299     {
 300         ClientInfo->CallbackWnd.hWnd = NULL;
 301         ClientInfo->CallbackWnd.pWnd = NULL;
 302     }
 303
 304    if (Wnd->strName.Buffer != NULL)
 305    {
 306        Wnd->strName.Length = 0;
 307        Wnd->strName.MaximumLength = 0;
 308        DesktopHeapFree(Wnd->head.rpdesk,
 309                        Wnd->strName.Buffer);
 310        Wnd->strName.Buffer = NULL;
 311    }
 312
 313 //    DesktopHeapFree(Wnd->head.rpdesk, Wnd);
 314 //    WindowObject->Wnd = NULL;
 315 }
 316
 317 /***********************************************************************
 318  *           IntDestroyWindow
 319  *
 320  * Destroy storage associated to a window. "Internals" p.358
 321  *
 322  * This is the "functional" DestroyWindows function ei. all stuff
 323  * done in CreateWindow is undone here and not in DestroyWindow:-P
 324
 325  */
 326 static LRESULT co_UserFreeWindow(PWND Window,
 327                                    PPROCESSINFO ProcessData,
 328                                    PTHREADINFO ThreadData,
 329                                    BOOLEAN SendMessages)
 330 {
 331    HWND *Children;
 332    HWND *ChildHandle;
 333    PWND Child;
 334    PMENU_OBJECT Menu;
 335    BOOLEAN BelongsToThreadData;
 336
 337    ASSERT(Window);
 338
 339    if(Window->state2 & WNDS2_INDESTROY)
 340    {
 341       DPRINT("Tried to call IntDestroyWindow() twice\n");
 342       return 0;
 343    }
 344    Window->state2 |= WNDS2_INDESTROY;
 345    Window->style &= ~WS_VISIBLE;
 346
 347    IntNotifyWinEvent(EVENT_OBJECT_DESTROY, Window, OBJID_WINDOW, CHILDID_SELF, 0);
 348
 349    /* remove the window already at this point from the thread window list so we
 350       don't get into trouble when destroying the thread windows while we're still
 351       in IntDestroyWindow() */
 352    RemoveEntryList(&Window->ThreadListEntry);
 353
 354    BelongsToThreadData = IntWndBelongsToThread(Window, ThreadData);
 355
 356    IntDeRegisterShellHookWindow(Window->head.h);
 357
 358    if(SendMessages)
 359    {
 360       /* Send destroy messages */
 361       IntSendDestroyMsg(Window->head.h);
 362    }
 363
 364    /* free child windows */
 365    Children = IntWinListChildren(Window);
 366    if (Children)
 367    {
 368       for (ChildHandle = Children; *ChildHandle; ++ChildHandle)
 369       {
 370          if ((Child = IntGetWindowObject(*ChildHandle)))
 371          {
 372             if(!IntWndBelongsToThread(Child, ThreadData))
 373             {
 374                /* send WM_DESTROY messages to windows not belonging to the same thread */
 375                IntSendDestroyMsg(Child->head.h);
 376             }
 377             else
 378                co_UserFreeWindow(Child, ProcessData, ThreadData, SendMessages);
 379
 380             UserDereferenceObject(Child);
 381          }
 382       }
 383       ExFreePool(Children);
 384    }
 385
 386    if(SendMessages)
 387    {
 388       /*
 389        * Clear the update region to make sure no WM_PAINT messages will be
 390        * generated for this window while processing the WM_NCDESTROY.
 391        */
 392       co_UserRedrawWindow(Window, NULL, 0,
 393                           RDW_VALIDATE | RDW_NOFRAME | RDW_NOERASE |
 394                           RDW_NOINTERNALPAINT | RDW_NOCHILDREN);
 395       if(BelongsToThreadData)
 396          co_IntSendMessage(Window->head.h, WM_NCDESTROY, 0, 0);
 397    }
 398
 399    DestroyTimersForWindow(ThreadData, Window);
 400
 401    /* Unregister hot keys */
 402    UnregisterWindowHotKeys (Window);
 403
 404    /* flush the message queue */
 405    MsqRemoveWindowMessagesFromQueue(Window);
 406
 407    /* from now on no messages can be sent to this window anymore */
 408    Window->state |= WNDS_DESTROYED;
 409    Window->fnid |= FNID_FREED;
 410
 411    /* don't remove the WINDOWSTATUS_DESTROYING bit */
 412
 413    /* reset shell window handles */
 414    if(ThreadData->rpdesk)
 415    {
 416       if (Window->head.h == ThreadData->rpdesk->rpwinstaParent->ShellWindow)
 417          ThreadData->rpdesk->rpwinstaParent->ShellWindow = NULL;
 418
 419       if (Window->head.h == ThreadData->rpdesk->rpwinstaParent->ShellListView)
 420          ThreadData->rpdesk->rpwinstaParent->ShellListView = NULL;
 421    }
 422
 423    /* FIXME: do we need to fake QS_MOUSEMOVE wakebit? */
 424
 425 #if 0 /* FIXME */
 426
 427    WinPosCheckInternalPos(Window->head.h);
 428    if (Window->head.h == GetCapture())
 429    {
 430       ReleaseCapture();
 431    }
 432
 433    /* free resources associated with the window */
 434    TIMER_RemoveWindowTimers(Window->head.h);
 435 #endif
 436
 437    if ( ((Window->style & (WS_CHILD|WS_POPUP)) != WS_CHILD) &&
 438         Window->IDMenu &&
 439         (Menu = UserGetMenuObject((HMENU)Window->IDMenu)))
 440    {
 441       IntDestroyMenuObject(Menu, TRUE, TRUE);
 442       Window->IDMenu = 0;
 443    }
 444
 445    if(Window->SystemMenu
 446          && (Menu = UserGetMenuObject(Window->SystemMenu)))
 447    {
 448       IntDestroyMenuObject(Menu, TRUE, TRUE);
 449       Window->SystemMenu = (HMENU)0;
 450    }
 451
 452    DceFreeWindowDCE(Window);    /* Always do this to catch orphaned DCs */
 453 #if 0 /* FIXME */
 454
 455    WINPROC_FreeProc(Window->winproc, WIN_PROC_WINDOW);
 456    CLASS_RemoveWindow(Window->Class);
 457 #endif
 458
 459    IntUnlinkWindow(Window);
 460
 461    UserReferenceObject(Window);
 462    UserDeleteObject(Window->head.h, otWindow);
 463
 464    IntDestroyScrollBars(Window);
 465
 466    /* dereference the class */
 467    IntDereferenceClass(Window->pcls,
 468                        Window->head.pti->pDeskInfo,
 469                        Window->head.pti->ppi);
 470    Window->pcls = NULL;
 471
 472    if(Window->hrgnClip)
 473    {
 474       GreDeleteObject(Window->hrgnClip);
 475       Window->hrgnClip = NULL;
 476    }
 477
 478 //   ASSERT(Window != NULL);
 479    UserFreeWindowInfo(Window->head.pti, Window);
 480
 481    UserDereferenceObject(Window);
 482
 483    IntClipboardFreeWindow(Window);
 484
 485    return 0;
 486 }
 487
 488 VOID FASTCALL
 489 IntGetWindowBorderMeasures(PWND Wnd, UINT *cx, UINT *cy)
 490 {
 491    if(HAS_DLGFRAME(Wnd->style, Wnd->ExStyle) && !(Wnd->style & WS_MINIMIZE))
 492    {
 493       *cx = UserGetSystemMetrics(SM_CXDLGFRAME);
 494       *cy = UserGetSystemMetrics(SM_CYDLGFRAME);
 495    }
 496    else
 497    {
 498       if(HAS_THICKFRAME(Wnd->style, Wnd->ExStyle)&& !(Wnd->style & WS_MINIMIZE))
 499       {
 500          *cx = UserGetSystemMetrics(SM_CXFRAME);
 501          *cy = UserGetSystemMetrics(SM_CYFRAME);
 502       }
 503       else if(HAS_THINFRAME(Wnd->style, Wnd->ExStyle))
 504       {
 505          *cx = UserGetSystemMetrics(SM_CXBORDER);
 506          *cy = UserGetSystemMetrics(SM_CYBORDER);
 507       }
 508       else
 509       {
 510          *cx = *cy = 0;
 511       }
 512    }
 513 }
 514
 515 //
 516 // Same as User32:IntGetWndProc.
 517 //
 518 WNDPROC FASTCALL
 519 IntGetWindowProc(PWND pWnd,
 520                  BOOL Ansi)
 521 {
 522    INT i;
 523    PCLS Class;
 524    WNDPROC gcpd, Ret = 0;
 525
 526    ASSERT(UserIsEnteredExclusive() == TRUE);
 527
 528    Class = pWnd->pcls;
 529
 530    if (pWnd->state & WNDS_SERVERSIDEWINDOWPROC)
 531    {
 532       for ( i = FNID_FIRST; i <= FNID_SWITCH; i++)
 533       {
 534          if (GETPFNSERVER(i) == pWnd->lpfnWndProc)
 535          {
 536             if (Ansi)
 537                Ret = GETPFNCLIENTA(i);
 538             else
 539                Ret = GETPFNCLIENTW(i);
 540          }
 541       }
 542       return Ret;
 543    }
 544
 545    if (Class->fnid == FNID_EDIT)
 546       Ret = pWnd->lpfnWndProc;
 547    else
 548    {
 549       Ret = pWnd->lpfnWndProc;
 550
 551       if (Class->fnid <= FNID_GHOST && Class->fnid >= FNID_BUTTON)
 552       {
 553          if (Ansi)
 554          {
 555             if (GETPFNCLIENTW(Class->fnid) == pWnd->lpfnWndProc)
 556                Ret = GETPFNCLIENTA(Class->fnid);
 557          }
 558          else
 559          {
 560             if (GETPFNCLIENTA(Class->fnid) == pWnd->lpfnWndProc)
 561                Ret = GETPFNCLIENTW(Class->fnid);
 562          }
 563       }
 564       if ( Ret != pWnd->lpfnWndProc)
 565          return Ret;
 566    }
 567    if ( Ansi == !!(pWnd->state & WNDS_ANSIWINDOWPROC) )
 568       return Ret;
 569
 570    gcpd = (WNDPROC)UserGetCPD(
 571                        pWnd,
 572                       (Ansi ? UserGetCPDA2U : UserGetCPDU2A )|UserGetCPDWindow,
 573                       (ULONG_PTR)Ret);
 574
 575    return (gcpd ? gcpd : Ret);
 576 }
 577
 578 static WNDPROC
 579 IntSetWindowProc(PWND pWnd,
 580                  WNDPROC NewWndProc,
 581                  BOOL Ansi)
 582 {
 583    INT i;
 584    PCALLPROCDATA CallProc;
 585    PCLS Class;
 586    WNDPROC Ret, chWndProc = NULL;
 587
 588    // Retrieve previous window proc.
 589    Ret = IntGetWindowProc(pWnd, Ansi);
 590
 591    Class = pWnd->pcls;
 592
 593    if (IsCallProcHandle(NewWndProc))
 594    {
 595       CallProc = UserGetObject(gHandleTable, NewWndProc, otCallProc);
 596       if (CallProc)
 597       {  // Reset new WndProc.
 598          NewWndProc = CallProc->pfnClientPrevious;
 599          // Reset Ansi from CallProc handle. This is expected with wine "deftest".
 600          Ansi = !!(CallProc->wType & UserGetCPDU2A);
 601       }
 602    }
 603    // Switch from Client Side call to Server Side call if match. Ref: "deftest".
 604    for ( i = FNID_FIRST; i <= FNID_SWITCH; i++)
 605    {
 606        if (GETPFNCLIENTW(i) == NewWndProc)
 607        {
 608           chWndProc = GETPFNSERVER(i);
 609           break;
 610        }
 611        if (GETPFNCLIENTA(i) == NewWndProc)
 612        {
 613           chWndProc = GETPFNSERVER(i);
 614           break;
 615        }
 616    }
 617    // If match, set/reset to Server Side and clear ansi.
 618    if (chWndProc)
 619    {
 620       pWnd->lpfnWndProc = chWndProc;
 621       pWnd->Unicode = TRUE;
 622       pWnd->state &= ~WNDS_ANSIWINDOWPROC;
 623       pWnd->state |= WNDS_SERVERSIDEWINDOWPROC;
 624    }
 625    else
 626    {
 627       pWnd->Unicode = !Ansi;
 628       // Handle the state change in here.
 629       if (Ansi)
 630          pWnd->state |= WNDS_ANSIWINDOWPROC;
 631       else
 632          pWnd->state &= ~WNDS_ANSIWINDOWPROC;
 633
 634       if (pWnd->state & WNDS_SERVERSIDEWINDOWPROC)
 635          pWnd->state &= ~WNDS_SERVERSIDEWINDOWPROC;
 636
 637       if (!NewWndProc) NewWndProc = pWnd->lpfnWndProc;
 638
 639       if (Class->fnid <= FNID_GHOST && Class->fnid >= FNID_BUTTON)
 640       {
 641          if (Ansi)
 642          {
 643             if (GETPFNCLIENTW(Class->fnid) == NewWndProc)
 644                chWndProc = GETPFNCLIENTA(Class->fnid);
 645          }
 646          else
 647          {
 648             if (GETPFNCLIENTA(Class->fnid) == NewWndProc)
 649                chWndProc = GETPFNCLIENTW(Class->fnid);
 650          }
 651       }
 652       // Now set the new window proc.
 653       pWnd->lpfnWndProc = (chWndProc ? chWndProc : NewWndProc);
 654    }
 655    return Ret;
 656 }
 657
 658 static BOOL FASTCALL
 659 IntSetMenu(
 660    PWND Wnd,
 661    HMENU Menu,
 662    BOOL *Changed)
 663 {
 664    PMENU_OBJECT OldMenu, NewMenu = NULL;
 665
 666    if ((Wnd->style & (WS_CHILD | WS_POPUP)) == WS_CHILD)
 667    {
 668       EngSetLastError(ERROR_INVALID_WINDOW_HANDLE);
 669       return FALSE;
 670    }
 671
 672    *Changed = (Wnd->IDMenu != (UINT) Menu);
 673    if (! *Changed)
 674    {
 675       return TRUE;
 676    }
 677
 678    if (Wnd->IDMenu)
 679    {
 680       OldMenu = IntGetMenuObject((HMENU) Wnd->IDMenu);
 681       ASSERT(NULL == OldMenu || OldMenu->MenuInfo.Wnd == Wnd->head.h);
 682    }
 683    else
 684    {
 685       OldMenu = NULL;
 686    }
 687
 688    if (NULL != Menu)
 689    {
 690       NewMenu = IntGetMenuObject(Menu);
 691       if (NULL == NewMenu)
 692       {
 693          if (NULL != OldMenu)
 694          {
 695             IntReleaseMenuObject(OldMenu);
 696          }
 697          EngSetLastError(ERROR_INVALID_MENU_HANDLE);
 698          return FALSE;
 699       }
 700       if (NULL != NewMenu->MenuInfo.Wnd)
 701       {
 702          /* Can't use the same menu for two windows */
 703          if (NULL != OldMenu)
 704          {
 705             IntReleaseMenuObject(OldMenu);
 706          }
 707          EngSetLastError(ERROR_INVALID_MENU_HANDLE);
 708          return FALSE;
 709       }
 710
 711    }
 712
 713    Wnd->IDMenu = (UINT) Menu;
 714    if (NULL != NewMenu)
 715    {
 716       NewMenu->MenuInfo.Wnd = Wnd->head.h;
 717       IntReleaseMenuObject(NewMenu);
 718    }
 719    if (NULL != OldMenu)
 720    {
 721       OldMenu->MenuInfo.Wnd = NULL;
 722       IntReleaseMenuObject(OldMenu);
 723    }
 724
 725    return TRUE;
 726 }
 727
 728
 729 /* INTERNAL ******************************************************************/
 730
 731
 732 VOID FASTCALL
 733 co_DestroyThreadWindows(struct _ETHREAD *Thread)
 734 {
 735    PTHREADINFO WThread;
 736    PLIST_ENTRY Current;
 737    PWND Wnd;
 738    USER_REFERENCE_ENTRY Ref;
 739    WThread = (PTHREADINFO)Thread->Tcb.Win32Thread;
 740
 741    while (!IsListEmpty(&WThread->WindowListHead))
 742    {
 743       Current = WThread->WindowListHead.Flink;
 744       Wnd = CONTAINING_RECORD(Current, WND, ThreadListEntry);
 745
 746       DPRINT("thread cleanup: while destroy wnds, wnd=0x%x\n",Wnd);
 747
 748       /* window removes itself from the list */
 749
 750       /*
 751       fixme: it is critical that the window removes itself! if now, we will loop
 752       here forever...
 753       */
 754
 755       //ASSERT(co_UserDestroyWindow(Wnd));
 756
 757       UserRefObjectCo(Wnd, &Ref);//faxme: temp hack??
 758       if (!co_UserDestroyWindow(Wnd))
 759       {
 760          DPRINT1("Unable to destroy window 0x%x at thread cleanup... This is _VERY_ bad!\n", Wnd);
 761       }
 762       UserDerefObjectCo(Wnd);//faxme: temp hack??
 763    }
 764 }
 765
 766
 767
 768 /*!
 769  * Internal function.
 770  * Returns client window rectangle relative to the upper-left corner of client area.
 771  *
 772  * \note Does not check the validity of the parameters
 773 */
 774 VOID FASTCALL
 775 IntGetClientRect(PWND Window, RECTL *Rect)
 776 {
 777    ASSERT( Window );
 778    ASSERT( Rect );
 779
 780    Rect->left = Rect->top = 0;
 781    Rect->right = Window->rcClient.right - Window->rcClient.left;
 782    Rect->bottom = Window->rcClient.bottom - Window->rcClient.top;
 783 }
 784
 785
 786 PMENU_OBJECT FASTCALL
 787 IntGetSystemMenu(PWND Window, BOOL bRevert, BOOL RetMenu)
 788 {
 789    PMENU_OBJECT Menu, NewMenu = NULL, SysMenu = NULL, ret = NULL;
 790    PTHREADINFO W32Thread;
 791    HMENU hNewMenu, hSysMenu;
 792    ROSMENUITEMINFO ItemInfo;
 793
 794    if(bRevert)
 795    {
 796       W32Thread = PsGetCurrentThreadWin32Thread();
 797
 798       if(!W32Thread->rpdesk)
 799          return NULL;
 800
 801       if(Window->SystemMenu)
 802       {
 803          Menu = UserGetMenuObject(Window->SystemMenu);
 804          if(Menu)
 805          {
 806             IntDestroyMenuObject(Menu, TRUE, TRUE);
 807             Window->SystemMenu = (HMENU)0;
 808          }
 809       }
 810
 811       if(W32Thread->rpdesk->rpwinstaParent->SystemMenuTemplate)
 812       {
 813          /* clone system menu */
 814          Menu = UserGetMenuObject(W32Thread->rpdesk->rpwinstaParent->SystemMenuTemplate);
 815          if(!Menu)
 816             return NULL;
 817
 818          NewMenu = IntCloneMenu(Menu);
 819          if(NewMenu)
 820          {
 821             Window->SystemMenu = NewMenu->MenuInfo.Self;
 822             NewMenu->MenuInfo.Flags |= MF_SYSMENU;
 823             NewMenu->MenuInfo.Wnd = Window->head.h;
 824             ret = NewMenu;
 825             //IntReleaseMenuObject(NewMenu);
 826          }
 827       }
 828       else
 829       {
 830          hSysMenu = UserCreateMenu(FALSE);
 831          if (NULL == hSysMenu)
 832          {
 833             return NULL;
 834          }
 835          SysMenu = IntGetMenuObject(hSysMenu);
 836          if (NULL == SysMenu)
 837          {
 838             UserDestroyMenu(hSysMenu);
 839             return NULL;
 840          }
 841          SysMenu->MenuInfo.Flags |= MF_SYSMENU;
 842          SysMenu->MenuInfo.Wnd = Window->head.h;
 843          hNewMenu = co_IntLoadSysMenuTemplate();
 844          if(!hNewMenu)
 845          {
 846             IntReleaseMenuObject(SysMenu);
 847             UserDestroyMenu(hSysMenu);
 848             return NULL;
 849          }
 850          Menu = IntGetMenuObject(hNewMenu);
 851          if(!Menu)
 852          {
 853             IntReleaseMenuObject(SysMenu);
 854             UserDestroyMenu(hSysMenu);
 855             return NULL;
 856          }
 857
 858          NewMenu = IntCloneMenu(Menu);
 859          if(NewMenu)
 860          {
 861             NewMenu->MenuInfo.Flags |= MF_SYSMENU | MF_POPUP;
 862             IntReleaseMenuObject(NewMenu);
 863             UserSetMenuDefaultItem(NewMenu, SC_CLOSE, FALSE);
 864
 865             ItemInfo.cbSize = sizeof(MENUITEMINFOW);
 866             ItemInfo.fMask = MIIM_FTYPE | MIIM_STRING | MIIM_STATE | MIIM_SUBMENU;
 867             ItemInfo.fType = MF_POPUP;
 868             ItemInfo.fState = MFS_ENABLED;
 869             ItemInfo.dwTypeData = NULL;
 870             ItemInfo.cch = 0;
 871             ItemInfo.hSubMenu = NewMenu->MenuInfo.Self;
 872             IntInsertMenuItem(SysMenu, (UINT) -1, TRUE, &ItemInfo);
 873
 874             Window->SystemMenu = SysMenu->MenuInfo.Self;
 875
 876             ret = SysMenu;
 877          }
 878          IntDestroyMenuObject(Menu, FALSE, TRUE);
 879       }
 880       if(RetMenu)
 881          return ret;
 882       else
 883          return NULL;
 884    }
 885    else
 886    {
 887       if(Window->SystemMenu)
 888          return IntGetMenuObject((HMENU)Window->SystemMenu);
 889       else
 890          return NULL;
 891    }
 892 }
 893
 894
 895 BOOL FASTCALL
 896 IntIsChildWindow(PWND Parent, PWND BaseWindow)
 897 {
 898    PWND Window;
 899
 900    Window = BaseWindow;
 901    while (Window && ((Window->style & (WS_POPUP|WS_CHILD)) == WS_CHILD))
 902    {
 903       if (Window == Parent)
 904       {
 905          return(TRUE);
 906       }
 907
 908       Window = Window->spwndParent;
 909    }
 910
 911    return(FALSE);
 912 }
 913
 914 BOOL FASTCALL
 915 IntIsWindowVisible(PWND BaseWindow)
 916 {
 917    PWND Window;
 918
 919    Window = BaseWindow;
 920    while(Window)
 921    {
 922       if(!(Window->style & WS_CHILD))
 923       {
 924          break;
 925       }
 926       if(!(Window->style & WS_VISIBLE))
 927       {
 928          return FALSE;
 929       }
 930
 931       Window = Window->spwndParent;
 932    }
 933
 934    if(Window && Window->style & WS_VISIBLE)
 935    {
 936       return TRUE;
 937    }
 938
 939    return FALSE;
 940 }
 941
 942
 943 /*
 944    link the window into siblings list
 945    children and parent are kept in place.
 946 */
 947 VOID FASTCALL
 948 IntLinkWindow(
 949    PWND Wnd,
 950    PWND WndInsertAfter /* set to NULL if top sibling */
 951 )
 952 {
 953   if ((Wnd->spwndPrev = WndInsertAfter))
 954    {
 955       /* link after WndInsertAfter */
 956       if ((Wnd->spwndNext = WndInsertAfter->spwndNext))
 957          Wnd->spwndNext->spwndPrev = Wnd;
 958
 959       Wnd->spwndPrev->spwndNext = Wnd;
 960    }
 961    else
 962    {
 963       /* link at top */
 964      if ((Wnd->spwndNext = Wnd->spwndParent->spwndChild))
 965          Wnd->spwndNext->spwndPrev = Wnd;
 966
 967      Wnd->spwndParent->spwndChild = Wnd;
 968    }
 969 }
 970
 971
 972 VOID FASTCALL IntLinkHwnd(PWND Wnd, HWND hWndPrev)
 973 {
 974     if (hWndPrev == HWND_NOTOPMOST)
 975     {
 976         if (!(Wnd->ExStyle & WS_EX_TOPMOST) &&
 977             (Wnd->ExStyle2 & WS_EX2_LINKED)) return;  /* nothing to do */
 978         Wnd->ExStyle &= ~WS_EX_TOPMOST;
 979         hWndPrev = HWND_TOP;  /* fallback to the HWND_TOP case */
 980     }
 981
 982     IntUnlinkWindow(Wnd);  /* unlink it from the previous location */
 983
 984     if (hWndPrev == HWND_BOTTOM)
 985     {
 986         /* Link in the bottom of the list */
 987         PWND WndInsertAfter;
 988
 989         WndInsertAfter = Wnd->spwndParent->spwndChild;
 990         while( WndInsertAfter && WndInsertAfter->spwndNext)
 991             WndInsertAfter = WndInsertAfter->spwndNext;
 992
 993         IntLinkWindow(Wnd, WndInsertAfter);
 994         Wnd->ExStyle &= ~WS_EX_TOPMOST;
 995     }
 996     else if (hWndPrev == HWND_TOPMOST)
 997     {
 998         /* Link in the top of the list */
 999         IntLinkWindow(Wnd, NULL);
1000
1001         Wnd->ExStyle |= WS_EX_TOPMOST;
1002     }
1003     else if (hWndPrev == HWND_TOP)
1004     {
1005         /* Link it after the last topmost window */
1006         PWND WndInsertBefore;
1007
1008         WndInsertBefore = Wnd->spwndParent->spwndChild;
1009
1010         if (!(Wnd->ExStyle & WS_EX_TOPMOST))  /* put it above the first non-topmost window */
1011         {
1012             while (WndInsertBefore != NULL && WndInsertBefore->spwndNext != NULL)
1013             {
1014                 if (!(WndInsertBefore->ExStyle & WS_EX_TOPMOST)) break;
1015                 if (WndInsertBefore == Wnd->spwndOwner)  /* keep it above owner */
1016                 {
1017                     Wnd->ExStyle |= WS_EX_TOPMOST;
1018                     break;
1019                 }
1020                 WndInsertBefore = WndInsertBefore->spwndNext;
1021             }
1022         }
1023
1024         IntLinkWindow(Wnd, WndInsertBefore ? WndInsertBefore->spwndPrev : NULL);
1025     }
1026     else
1027     {
1028         /* Link it after hWndPrev */
1029         PWND WndInsertAfter;
1030
1031         WndInsertAfter = UserGetWindowObject(hWndPrev);
1032         /* Are we called with an erroneous handle */
1033         if(WndInsertAfter == NULL)
1034         {
1035             /* Link in a default position */
1036             IntLinkHwnd(Wnd, HWND_TOP);
1037             return;
1038         }
1039
1040         IntLinkWindow(Wnd, WndInsertAfter);
1041
1042         /* Fix the WS_EX_TOPMOST flag */
1043         if (!(WndInsertAfter->ExStyle & WS_EX_TOPMOST))
1044         {
1045             Wnd->ExStyle &= ~WS_EX_TOPMOST;
1046         }
1047         else
1048         {
1049             if(WndInsertAfter->spwndNext &&
1050                WndInsertAfter->spwndNext->ExStyle & WS_EX_TOPMOST)
1051             {
1052                 Wnd->ExStyle |= WS_EX_TOPMOST;
1053             }
1054         }
1055     }
1056 }
1057
1058 HWND FASTCALL
1059 IntSetOwner(HWND hWnd, HWND hWndNewOwner)
1060 {
1061    PWND Wnd, WndOldOwner, WndNewOwner;
1062    HWND ret;
1063
1064    Wnd = IntGetWindowObject(hWnd);
1065    if(!Wnd)
1066       return NULL;
1067
1068    WndOldOwner = Wnd->spwndOwner;
1069
1070    ret = WndOldOwner ? WndOldOwner->head.h : 0;
1071
1072    if((WndNewOwner = UserGetWindowObject(hWndNewOwner)))
1073    {
1074        Wnd->spwndOwner= WndNewOwner;
1075    }
1076    else
1077    {
1078        Wnd->spwndOwner = NULL;
1079    }
1080
1081    UserDereferenceObject(Wnd);
1082    return ret;
1083 }
1084
1085 PWND FASTCALL
1086 co_IntSetParent(PWND Wnd, PWND WndNewParent)
1087 {
1088    PWND WndOldParent, pWndExam;
1089    BOOL WasVisible;
1090
1091    ASSERT(Wnd);
1092    ASSERT(WndNewParent);
1093    ASSERT_REFS_CO(Wnd);
1094    ASSERT_REFS_CO(WndNewParent);
1095
1096    if (Wnd == Wnd->head.rpdesk->spwndMessage)
1097    {
1098       EngSetLastError(ERROR_ACCESS_DENIED);
1099       return( NULL);
1100    }
1101
1102    /* Some applications try to set a child as a parent */
1103    if (IntIsChildWindow(Wnd, WndNewParent))
1104    {
1105       EngSetLastError( ERROR_INVALID_PARAMETER );
1106       return NULL;
1107    }
1108
1109    pWndExam = WndNewParent; // Load parent Window to examine.
1110    // Now test for set parent to parent hit.
1111    while (pWndExam)
1112    {
1113       if (Wnd == pWndExam)
1114       {
1115          EngSetLastError(ERROR_INVALID_PARAMETER);
1116          return NULL;
1117       }
1118       pWndExam = pWndExam->spwndParent;
1119    }
1120
1121    /*
1122     * Windows hides the window first, then shows it again
1123     * including the WM_SHOWWINDOW messages and all
1124     */
1125    WasVisible = co_WinPosShowWindow(Wnd, SW_HIDE);
1126
1127    /* Window must belong to current process */
1128    if (Wnd->head.pti->pEThread->ThreadsProcess != PsGetCurrentProcess())
1129       return NULL;
1130
1131    WndOldParent = Wnd->spwndParent;
1132
1133    if (WndOldParent) UserReferenceObject(WndOldParent); /* caller must deref */
1134
1135    if (WndNewParent != WndOldParent)
1136    {
1137       /* Unlink the window from the siblings list */
1138       IntUnlinkWindow(Wnd);
1139
1140       /* Set the new parent */
1141       Wnd->spwndParent = WndNewParent;
1142
1143       /* Link the window with its new siblings*/
1144       IntLinkHwnd(Wnd, HWND_TOP);
1145
1146    }
1147
1148    IntNotifyWinEvent(EVENT_OBJECT_PARENTCHANGE, Wnd ,OBJID_WINDOW, CHILDID_SELF, WEF_SETBYWNDPTI);
1149    /*
1150     * SetParent additionally needs to make hwnd the top window
1151     * in the z-order and send the expected WM_WINDOWPOSCHANGING and
1152     * WM_WINDOWPOSCHANGED notification messages.
1153     */
1154    co_WinPosSetWindowPos(Wnd, (0 == (Wnd->ExStyle & WS_EX_TOPMOST) ? HWND_TOP : HWND_TOPMOST),
1155                          0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE
1156                          | (WasVisible ? SWP_SHOWWINDOW : 0));
1157
1158    /*
1159     * FIXME: a WM_MOVE is also generated (in the DefWindowProc handler
1160     * for WM_WINDOWPOSCHANGED) in Windows, should probably remove SWP_NOMOVE
1161     */
1162
1163    return WndOldParent;
1164 }
1165
1166 HWND FASTCALL
1167 co_UserSetParent(HWND hWndChild, HWND hWndNewParent)
1168 {
1169    PWND Wnd = NULL, WndParent = NULL, WndOldParent;
1170    HWND hWndOldParent = NULL;
1171    USER_REFERENCE_ENTRY Ref, ParentRef;
1172
1173    if (IntIsBroadcastHwnd(hWndChild) || IntIsBroadcastHwnd(hWndNewParent))
1174    {
1175       EngSetLastError(ERROR_INVALID_PARAMETER);
1176       return( NULL);
1177    }
1178
1179    if (hWndChild == IntGetDesktopWindow())
1180    {
1181       EngSetLastError(ERROR_ACCESS_DENIED);
1182       return( NULL);
1183    }
1184
1185    if (hWndNewParent)
1186    {
1187       if (!(WndParent = UserGetWindowObject(hWndNewParent)))
1188       {
1189          return( NULL);
1190       }
1191    }
1192    else
1193    {
1194       if (!(WndParent = UserGetWindowObject(IntGetDesktopWindow())))
1195       {
1196          return( NULL);
1197       }
1198    }
1199
1200    if (!(Wnd = UserGetWindowObject(hWndChild)))
1201    {
1202       return( NULL);
1203    }
1204
1205    UserRefObjectCo(Wnd, &Ref);
1206    UserRefObjectCo(WndParent, &ParentRef);
1207
1208    WndOldParent = co_IntSetParent(Wnd, WndParent);
1209
1210    UserDerefObjectCo(WndParent);
1211    UserDerefObjectCo(Wnd);
1212
1213    if (WndOldParent)
1214    {
1215       hWndOldParent = WndOldParent->head.h;
1216       UserDereferenceObject(WndOldParent);
1217    }
1218
1219    return( hWndOldParent);
1220 }
1221
1222 BOOL FASTCALL
1223 IntSetSystemMenu(PWND Window, PMENU_OBJECT Menu)
1224 {
1225    PMENU_OBJECT OldMenu;
1226    if(Window->SystemMenu)
1227    {
1228       OldMenu = IntGetMenuObject(Window->SystemMenu);
1229       if(OldMenu)
1230       {
1231          OldMenu->MenuInfo.Flags &= ~ MF_SYSMENU;
1232          IntReleaseMenuObject(OldMenu);
1233       }
1234    }
1235
1236    if(Menu)
1237    {
1238       /* FIXME check window style, propably return FALSE ? */
1239       Window->SystemMenu = Menu->MenuInfo.Self;
1240       Menu->MenuInfo.Flags |= MF_SYSMENU;
1241    }
1242    else
1243       Window->SystemMenu = (HMENU)0;
1244
1245    return TRUE;
1246 }
1247
1248 /* unlink the window from siblings. children and parent are kept in place. */
1249 VOID FASTCALL
1250 IntUnlinkWindow(PWND Wnd)
1251 {
1252    if (Wnd->spwndNext)
1253        Wnd->spwndNext->spwndPrev = Wnd->spwndPrev;
1254
1255    if (Wnd->spwndPrev)
1256        Wnd->spwndPrev->spwndNext = Wnd->spwndNext;
1257
1258    if (Wnd->spwndParent && Wnd->spwndParent->spwndChild == Wnd)
1259        Wnd->spwndParent->spwndChild = Wnd->spwndNext;
1260
1261    Wnd->spwndPrev = Wnd->spwndNext = NULL;
1262 }
1263
1264 BOOL
1265 FASTCALL
1266 IntGetWindowPlacement(PWND Wnd, WINDOWPLACEMENT *lpwndpl)
1267 {
1268    POINT Size;
1269
1270    if (!Wnd) return FALSE;
1271
1272    if(lpwndpl->length != sizeof(WINDOWPLACEMENT))
1273    {
1274       return FALSE;
1275    }
1276
1277    lpwndpl->flags = 0;
1278    if (0 == (Wnd->style & WS_VISIBLE))
1279    {
1280       lpwndpl->showCmd = SW_HIDE;
1281    }
1282    else if (0 != (Wnd->state2 & WNDS2_MAXIMIZEBUTTONDOWN) ||
1283             0 != (Wnd->style & WS_MAXIMIZE))
1284    {
1285       lpwndpl->showCmd = SW_MAXIMIZE;
1286    }
1287    else if (0 != (Wnd->style & WS_MINIMIZE))
1288    {
1289       lpwndpl->showCmd = SW_MINIMIZE;
1290    }
1291    else if (0 != (Wnd->style & WS_VISIBLE))
1292    {
1293       lpwndpl->showCmd = SW_SHOWNORMAL;
1294    }
1295
1296    Size.x = Wnd->rcWindow.left;
1297    Size.y = Wnd->rcWindow.top;
1298    WinPosInitInternalPos(Wnd, &Size,
1299                          &Wnd->rcWindow);
1300
1301    lpwndpl->rcNormalPosition = Wnd->InternalPos.NormalRect;
1302    lpwndpl->ptMinPosition = Wnd->InternalPos.IconPos;
1303    lpwndpl->ptMaxPosition = Wnd->InternalPos.MaxPos;
1304
1305    return TRUE;
1306 }
1307
1308
1309 /* FUNCTIONS *****************************************************************/
1310
1311 /*
1312  * As best as I can figure, this function is used by EnumWindows,
1313  * EnumChildWindows, EnumDesktopWindows, & EnumThreadWindows.
1314  *
1315  * It's supposed to build a list of HWNDs to return to the caller.
1316  * We can figure out what kind of list by what parameters are
1317  * passed to us.
1318  */
1319 /*
1320  * @implemented
1321  */
1322 NTSTATUS
1323 APIENTRY
1324 NtUserBuildHwndList(
1325    HDESK hDesktop,
1326    HWND hwndParent,
1327    BOOLEAN bChildren,
1328    ULONG dwThreadId,
1329    ULONG lParam,
1330    HWND* pWnd,
1331    ULONG* pBufSize)
1332 {
1333    NTSTATUS Status;
1334    ULONG dwCount = 0;
1335
1336    if (pBufSize == 0)
1337        return ERROR_INVALID_PARAMETER;
1338
1339    if (hwndParent || !dwThreadId)
1340    {
1341       PDESKTOP Desktop;
1342       PWND Parent, Window;
1343
1344       if(!hwndParent)
1345       {
1346          if(hDesktop == NULL && !(Desktop = IntGetActiveDesktop()))
1347          {
1348             return ERROR_INVALID_HANDLE;
1349          }
1350
1351          if(hDesktop)
1352          {
1353             Status = IntValidateDesktopHandle(hDesktop,
1354                                               UserMode,
1355                                               0,
1356                                               &Desktop);
1357             if(!NT_SUCCESS(Status))
1358             {
1359                return ERROR_INVALID_HANDLE;
1360             }
1361          }
1362          hwndParent = Desktop->DesktopWindow;
1363       }
1364       else
1365       {
1366          hDesktop = 0;
1367       }
1368
1369       if((Parent = UserGetWindowObject(hwndParent)) &&
1370          (Window = Parent->spwndChild))
1371       {
1372          BOOL bGoDown = TRUE;
1373
1374          Status = STATUS_SUCCESS;
1375          while(TRUE)
1376          {
1377             if (bGoDown)
1378             {
1379                if(dwCount++ < *pBufSize && pWnd)
1380                {
1381                   _SEH2_TRY
1382                   {
1383                      ProbeForWrite(pWnd, sizeof(HWND), 1);
1384                      *pWnd = Window->head.h;
1385                      pWnd++;
1386                   }
1387                   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1388                   {
1389                      Status = _SEH2_GetExceptionCode();
1390                   }
1391                   _SEH2_END
1392                   if(!NT_SUCCESS(Status))
1393                   {
1394                      SetLastNtError(Status);
1395                      break;
1396                   }
1397                }
1398                if (Window->spwndChild && bChildren)
1399                {
1400                   Window = Window->spwndChild;
1401                   continue;
1402                }
1403                bGoDown = FALSE;
1404             }
1405             if (Window->spwndNext)
1406             {
1407                Window = Window->spwndNext;
1408                bGoDown = TRUE;
1409                continue;
1410             }
1411             Window = Window->spwndParent;
1412             if (Window == Parent)
1413             {
1414                break;
1415             }
1416          }
1417       }
1418
1419       if(hDesktop)
1420       {
1421          ObDereferenceObject(Desktop);
1422       }
1423    }
1424    else // Build EnumThreadWindows list!
1425    {
1426       PETHREAD Thread;
1427       PTHREADINFO W32Thread;
1428       PLIST_ENTRY Current;
1429       PWND Window;
1430
1431       Status = PsLookupThreadByThreadId((HANDLE)dwThreadId, &Thread);
1432       if (!NT_SUCCESS(Status))
1433       {
1434          DPRINT1("Thread Id is not valid!\n");
1435          return ERROR_INVALID_PARAMETER;
1436       }
1437       if (!(W32Thread = (PTHREADINFO)Thread->Tcb.Win32Thread))
1438       {
1439          ObDereferenceObject(Thread);
1440          DPRINT1("Thread is not initialized!\n");
1441          return ERROR_INVALID_PARAMETER;
1442       }
1443
1444       Current = W32Thread->WindowListHead.Flink;
1445       while (Current != &(W32Thread->WindowListHead))
1446       {
1447          Window = CONTAINING_RECORD(Current, WND, ThreadListEntry);
1448          ASSERT(Window);
1449
1450          if (dwCount < *pBufSize && pWnd)
1451          {
1452             _SEH2_TRY
1453             {
1454                ProbeForWrite(pWnd, sizeof(HWND), 1);
1455                *pWnd = Window->head.h;
1456                pWnd++;
1457             }
1458             _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1459             {
1460                Status = _SEH2_GetExceptionCode();
1461             }
1462             _SEH2_END
1463             if (!NT_SUCCESS(Status))
1464             {
1465                DPRINT1("Failure to build window list!\n");
1466                SetLastNtError(Status);
1467                break;
1468             }
1469          }
1470          dwCount++;
1471          Current = Window->ThreadListEntry.Flink;
1472       }
1473
1474       ObDereferenceObject(Thread);
1475    }
1476
1477    *pBufSize = dwCount;
1478    return STATUS_SUCCESS;
1479 }
1480
1481
1482 /*
1483  * @implemented
1484  */
1485 HWND APIENTRY
1486 NtUserChildWindowFromPointEx(HWND hwndParent,
1487                              LONG x,
1488                              LONG y,
1489                              UINT uiFlags)
1490 {
1491    PWND Parent;
1492    POINTL Pt;
1493    HWND Ret;
1494    HWND *List, *phWnd;
1495
1496    if(!(Parent = UserGetWindowObject(hwndParent)))
1497    {
1498       return NULL;
1499    }
1500
1501    Pt.x = x;
1502    Pt.y = y;
1503
1504    if(Parent->head.h != IntGetDesktopWindow())
1505    {
1506       Pt.x += Parent->rcClient.left;
1507       Pt.y += Parent->rcClient.top;
1508    }
1509
1510    if(!IntPtInWindow(Parent, Pt.x, Pt.y))
1511    {
1512       return NULL;
1513    }
1514
1515    Ret = Parent->head.h;
1516    if((List = IntWinListChildren(Parent)))
1517    {
1518       for(phWnd = List; *phWnd; phWnd++)
1519       {
1520          PWND Child;
1521          if((Child = UserGetWindowObject(*phWnd)))
1522          {
1523             if(!(Child->style & WS_VISIBLE) && (uiFlags & CWP_SKIPINVISIBLE))
1524             {
1525                continue;
1526             }
1527             if((Child->style & WS_DISABLED) && (uiFlags & CWP_SKIPDISABLED))
1528             {
1529                continue;
1530             }
1531             if((Child->ExStyle & WS_EX_TRANSPARENT) && (uiFlags & CWP_SKIPTRANSPARENT))
1532             {
1533                continue;
1534             }
1535             if(IntPtInWindow(Child, Pt.x, Pt.y))
1536             {
1537                Ret = Child->head.h;
1538                break;
1539             }
1540          }
1541       }
1542       ExFreePool(List);
1543    }
1544
1545    return Ret;
1546 }
1547
1548 static void IntSendParentNotify( PWND pWindow, UINT msg )
1549 {
1550     if ( (pWindow->style & (WS_CHILD | WS_POPUP)) == WS_CHILD &&
1551          !(pWindow->style & WS_EX_NOPARENTNOTIFY))
1552     {
1553         if (pWindow->spwndParent && pWindow->spwndParent != UserGetDesktopWindow())
1554         {
1555             co_IntSendMessage( pWindow->spwndParent->head.h,
1556                                WM_PARENTNOTIFY,
1557                                MAKEWPARAM( msg, pWindow->IDMenu),
1558                                (LPARAM)pWindow->head.h );
1559         }
1560     }
1561 }
1562
1563 void FASTCALL
1564 IntFixWindowCoordinates(CREATESTRUCTW* Cs, PWND ParentWindow, DWORD* dwShowMode)
1565 {
1566 #define IS_DEFAULT(x)  ((x) == CW_USEDEFAULT || (x) == (SHORT)0x8000)
1567
1568    /* default positioning for overlapped windows */
1569     if(!(Cs->style & (WS_POPUP | WS_CHILD)))
1570    {
1571       PMONITOR pMonitor;
1572       PRTL_USER_PROCESS_PARAMETERS ProcessParams;
1573
1574       pMonitor = IntGetPrimaryMonitor();
1575       ASSERT(pMonitor);
1576
1577       ProcessParams = PsGetCurrentProcess()->Peb->ProcessParameters;
1578
1579       if (IS_DEFAULT(Cs->x))
1580       {
1581           if (!IS_DEFAULT(Cs->y)) *dwShowMode = Cs->y;
1582
1583           if(ProcessParams->WindowFlags & STARTF_USEPOSITION)
1584           {
1585               Cs->x = ProcessParams->StartingX;
1586               Cs->y = ProcessParams->StartingY;
1587           }
1588           else
1589           {
1590                Cs->x = pMonitor->cWndStack * (UserGetSystemMetrics(SM_CXSIZE) + UserGetSystemMetrics(SM_CXFRAME));
1591                Cs->y = pMonitor->cWndStack * (UserGetSystemMetrics(SM_CYSIZE) + UserGetSystemMetrics(SM_CYFRAME));
1592                if (Cs->x > ((pMonitor->rcWork.right - pMonitor->rcWork.left) / 4) ||
1593                    Cs->y > ((pMonitor->rcWork.bottom - pMonitor->rcWork.top) / 4))
1594                {
1595                   /* reset counter and position */
1596                   Cs->x = 0;
1597                   Cs->y = 0;
1598                   pMonitor->cWndStack = 0;
1599                }
1600                pMonitor->cWndStack++;
1601           }
1602       }
1603
1604       if (IS_DEFAULT(Cs->cx))
1605       {
1606           if (ProcessParams->WindowFlags & STARTF_USEPOSITION)
1607           {
1608               Cs->cx = ProcessParams->CountX;
1609               Cs->cy = ProcessParams->CountY;
1610           }
1611           else
1612           {
1613               Cs->cx = (pMonitor->rcWork.right - pMonitor->rcWork.left) * 3 / 4;
1614               Cs->cy = (pMonitor->rcWork.bottom - pMonitor->rcWork.top) * 3 / 4;
1615           }
1616       }
1617       /* neither x nor cx are default. Check the y values .
1618        * In the trace we see Outlook and Outlook Express using
1619        * cy set to CW_USEDEFAULT when opening the address book.
1620        */
1621       else if (IS_DEFAULT(Cs->cy))
1622       {
1623           DPRINT("Strange use of CW_USEDEFAULT in nHeight\n");
1624           Cs->cy = (pMonitor->rcWork.bottom - pMonitor->rcWork.top) * 3 / 4;
1625       }
1626    }
1627    else
1628    {
1629       /* if CW_USEDEFAULT is set for non-overlapped windows, both values are set to zero */
1630       if(IS_DEFAULT(Cs->x))
1631       {
1632          Cs->x = 0;
1633          Cs->y = 0;
1634       }
1635       if(IS_DEFAULT(Cs->cx))
1636       {
1637          Cs->cx = 0;
1638          Cs->cy = 0;
1639       }
1640    }
1641
1642 #undef IS_DEFAULT
1643 }
1644
1645 /* Allocates and initializes a window*/
1646 PWND FASTCALL IntCreateWindow(CREATESTRUCTW* Cs,
1647                                         PLARGE_STRING WindowName,
1648                                         PCLS Class,
1649                                         PWND ParentWindow,
1650                                         PWND OwnerWindow)
1651 {
1652    PWND pWnd = NULL;
1653    HWND hWnd;
1654    PTHREADINFO pti = NULL;
1655    PMENU_OBJECT SystemMenu;
1656    BOOL MenuChanged;
1657    BOOL bUnicodeWindow;
1658
1659    pti = PsGetCurrentThreadWin32Thread();
1660
1661    if (!(Cs->dwExStyle & WS_EX_LAYOUTRTL))
1662    {
1663       if (ParentWindow)
1664       {
1665          if ( (Cs->style & (WS_CHILD|WS_POPUP)) == WS_CHILD &&
1666               ParentWindow->ExStyle & WS_EX_LAYOUTRTL &&
1667              !(ParentWindow->ExStyle & WS_EX_NOINHERITLAYOUT) )
1668             Cs->dwExStyle |= WS_EX_LAYOUTRTL;
1669       }
1670       else
1671       {/*
1672         Note from MSDN http://msdn.microsoft.com/en-us/library/aa913269.aspx :
1673
1674         Dialog boxes and message boxes do not inherit layout, so you must
1675         set the layout explicitly.
1676        */
1677          if ( Class && Class->fnid != FNID_DIALOG)
1678          {
1679             PPROCESSINFO ppi = PsGetCurrentProcessWin32Process();
1680             if (ppi->dwLayout & LAYOUT_RTL)
1681             {
1682                Cs->dwExStyle |= WS_EX_LAYOUTRTL;
1683             }
1684          }
1685       }
1686    }
1687
1688    /* Automatically add WS_EX_WINDOWEDGE */
1689    if ((Cs->dwExStyle & WS_EX_DLGMODALFRAME) ||
1690          ((!(Cs->dwExStyle & WS_EX_STATICEDGE)) &&
1691          (Cs->style & (WS_DLGFRAME | WS_THICKFRAME))))
1692       Cs->dwExStyle |= WS_EX_WINDOWEDGE;
1693    else
1694       Cs->dwExStyle &= ~WS_EX_WINDOWEDGE;
1695
1696    /* Is it a unicode window? */
1697    bUnicodeWindow =!(Cs->dwExStyle & WS_EX_SETANSICREATOR);
1698    Cs->dwExStyle &= ~WS_EX_SETANSICREATOR;
1699
1700    /* Allocate the new window */
1701    pWnd = (PWND) UserCreateObject( gHandleTable,
1702                                    pti->rpdesk,
1703                                   (PHANDLE)&hWnd,
1704                                    otWindow,
1705                                    sizeof(WND) + Class->cbwndExtra);
1706
1707    if (!pWnd)
1708    {
1709       goto AllocError;
1710    }
1711
1712    DPRINT("Created object with handle %X\n", hWnd);
1713
1714    if (NULL == pti->rpdesk->DesktopWindow)
1715    {
1716       /* If there is no desktop window yet, we must be creating it */
1717       pti->rpdesk->DesktopWindow = hWnd;
1718       pti->rpdesk->pDeskInfo->spwnd = pWnd;
1719    }
1720
1721    /*
1722     * Fill out the structure describing it.
1723     */
1724    /* Remember, pWnd->head is setup in object.c ...*/
1725    pWnd->spwndParent = ParentWindow;
1726    pWnd->spwndOwner = OwnerWindow;
1727    pWnd->fnid = 0;
1728    pWnd->hWndLastActive = hWnd;
1729    pWnd->state2 |= WNDS2_WIN40COMPAT;
1730    pWnd->pcls = Class;
1731    pWnd->hModule = Cs->hInstance;
1732    pWnd->style = Cs->style & ~WS_VISIBLE;
1733    pWnd->ExStyle = Cs->dwExStyle;
1734    pWnd->cbwndExtra = pWnd->pcls->cbwndExtra;
1735
1736    IntReferenceMessageQueue(pWnd->head.pti->MessageQueue);
1737    if (pWnd->spwndParent != NULL && Cs->hwndParent != 0)
1738    {
1739        pWnd->HideFocus = pWnd->spwndParent->HideFocus;
1740        pWnd->HideAccel = pWnd->spwndParent->HideAccel;
1741    }
1742
1743    if (pWnd->pcls->CSF_flags & CSF_SERVERSIDEPROC)
1744       pWnd->state |= WNDS_SERVERSIDEWINDOWPROC;
1745
1746  /* BugBoy Comments: Comment below say that System classes are always created
1747     as UNICODE. In windows, creating a window with the ANSI version of CreateWindow
1748     sets the window to ansi as verified by testing with IsUnicodeWindow API.
1749
1750     No where can I see in code or through testing does the window change back
1751     to ANSI after being created as UNICODE in ROS. I didnt do more testing to
1752     see what problems this would cause.*/
1753
1754    // Set WndProc from Class.
1755    pWnd->lpfnWndProc  = pWnd->pcls->lpfnWndProc;
1756
1757    // GetWindowProc, test for non server side default classes and set WndProc.
1758     if ( pWnd->pcls->fnid <= FNID_GHOST && pWnd->pcls->fnid >= FNID_BUTTON )
1759     {
1760       if (bUnicodeWindow)
1761       {
1762          if (GETPFNCLIENTA(pWnd->pcls->fnid) == pWnd->lpfnWndProc)
1763             pWnd->lpfnWndProc = GETPFNCLIENTW(pWnd->pcls->fnid);
1764       }
1765       else
1766       {
1767          if (GETPFNCLIENTW(pWnd->pcls->fnid) == pWnd->lpfnWndProc)
1768             pWnd->lpfnWndProc = GETPFNCLIENTA(pWnd->pcls->fnid);
1769       }
1770     }
1771
1772    // If not an Unicode caller, set Ansi creator bit.
1773    if (!bUnicodeWindow) pWnd->state |= WNDS_ANSICREATOR;
1774
1775    // Clone Class Ansi/Unicode proc type.
1776    if (pWnd->pcls->CSF_flags & CSF_ANSIPROC)
1777    {
1778       pWnd->state |= WNDS_ANSIWINDOWPROC;
1779       pWnd->Unicode = FALSE;
1780    }
1781    else
1782    { /*
1783        It seems there can be both an Ansi creator and Unicode Class Window
1784        WndProc, unless the following overriding conditions occur:
1785      */
1786       if ( !bUnicodeWindow &&
1787           ( Class->atomClassName == gpsi->atomSysClass[ICLS_BUTTON]    ||
1788             Class->atomClassName == gpsi->atomSysClass[ICLS_COMBOBOX]  ||
1789             Class->atomClassName == gpsi->atomSysClass[ICLS_COMBOLBOX] ||
1790             Class->atomClassName == gpsi->atomSysClass[ICLS_DIALOG]    ||
1791             Class->atomClassName == gpsi->atomSysClass[ICLS_EDIT]      ||
1792             Class->atomClassName == gpsi->atomSysClass[ICLS_IME]       ||
1793             Class->atomClassName == gpsi->atomSysClass[ICLS_LISTBOX]   ||
1794             Class->atomClassName == gpsi->atomSysClass[ICLS_MDICLIENT] ||
1795             Class->atomClassName == gpsi->atomSysClass[ICLS_STATIC] ) )
1796       { // Override Class and set the window Ansi WndProc.
1797          pWnd->state |= WNDS_ANSIWINDOWPROC;
1798          pWnd->Unicode = FALSE;
1799       }
1800       else
1801       { // Set the window Unicode WndProc.
1802          pWnd->state &= ~WNDS_ANSIWINDOWPROC;
1803          pWnd->Unicode = TRUE;
1804       }
1805    }
1806
1807    /* BugBoy Comments: if the window being created is a edit control, ATOM 0xCxxx,
1808       then my testing shows that windows (2k and XP) creates a CallProc for it immediately
1809       Dont understand why it does this. */
1810    if (Class->atomClassName == gpsi->atomSysClass[ICLS_EDIT])
1811    {
1812       PCALLPROCDATA CallProc;
1813       CallProc = CreateCallProc(NULL, pWnd->lpfnWndProc, pWnd->Unicode , pWnd->head.pti->ppi);
1814
1815       if (!CallProc)
1816       {
1817          EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
1818          DPRINT1("Warning: Unable to create CallProc for edit control. Control may not operate correctly! hwnd %x\n",hWnd);
1819       }
1820       else
1821       {
1822          UserAddCallProcToClass(pWnd->pcls, CallProc);
1823       }
1824    }
1825
1826    InitializeListHead(&pWnd->PropListHead);
1827
1828    if ( WindowName->Buffer != NULL && WindowName->Length > 0 )
1829    {
1830       pWnd->strName.Buffer = DesktopHeapAlloc(pWnd->head.rpdesk,
1831                                              WindowName->Length + sizeof(UNICODE_NULL));
1832       if (pWnd->strName.Buffer == NULL)
1833       {
1834           goto AllocError;
1835       }
1836
1837       RtlCopyMemory(pWnd->strName.Buffer, WindowName->Buffer, WindowName->Length);
1838       pWnd->strName.Buffer[WindowName->Length / sizeof(WCHAR)] = L'\0';
1839       pWnd->strName.Length = WindowName->Length;
1840       pWnd->strName.MaximumLength = WindowName->Length + sizeof(UNICODE_NULL);
1841    }
1842
1843    /* Correct the window style. */
1844    if ((pWnd->style & (WS_CHILD | WS_POPUP)) != WS_CHILD)
1845    {
1846       pWnd->style |= WS_CLIPSIBLINGS;
1847       if (!(pWnd->style & WS_POPUP))
1848       {
1849          pWnd->style |= WS_CAPTION;
1850          pWnd->state |= WNDS_SENDSIZEMOVEMSGS;
1851       }
1852    }
1853
1854    if ((pWnd->ExStyle & WS_EX_DLGMODALFRAME) ||
1855           (pWnd->style & (WS_DLGFRAME | WS_THICKFRAME)))
1856         pWnd->ExStyle |= WS_EX_WINDOWEDGE;
1857     else
1858         pWnd->ExStyle &= ~WS_EX_WINDOWEDGE;
1859
1860    /* create system menu */
1861    if((Cs->style & WS_SYSMENU) )//&& (dwStyle & WS_CAPTION) == WS_CAPTION)
1862    {
1863       SystemMenu = IntGetSystemMenu(pWnd, TRUE, TRUE);
1864       if(SystemMenu)
1865       {
1866          pWnd->SystemMenu = SystemMenu->MenuInfo.Self;
1867          IntReleaseMenuObject(SystemMenu);
1868       }
1869    }
1870
1871    /* Set the window menu */
1872    if ((Cs->style & (WS_CHILD | WS_POPUP)) != WS_CHILD)
1873    {
1874        if (Cs->hMenu)
1875          IntSetMenu(pWnd, Cs->hMenu, &MenuChanged);
1876       else if (pWnd->pcls->lpszMenuName) // Take it from the parent.
1877       {
1878           UNICODE_STRING MenuName;
1879           HMENU hMenu;
1880
1881           if (IS_INTRESOURCE(pWnd->pcls->lpszMenuName))
1882           {
1883              MenuName.Length = 0;
1884              MenuName.MaximumLength = 0;
1885              MenuName.Buffer = pWnd->pcls->lpszMenuName;
1886           }
1887           else
1888           {
1889              RtlInitUnicodeString( &MenuName, pWnd->pcls->lpszMenuName);
1890           }
1891           hMenu = co_IntCallLoadMenu( pWnd->pcls->hModule, &MenuName);
1892           if (hMenu) IntSetMenu(pWnd, hMenu, &MenuChanged);
1893       }
1894    }
1895    else // Not a child
1896       pWnd->IDMenu = (UINT) Cs->hMenu;
1897
1898    /* Insert the window into the thread's window list. */
1899    InsertTailList (&pti->WindowListHead, &pWnd->ThreadListEntry);
1900
1901    /*  Handle "CS_CLASSDC", it is tested first. */
1902    if ( (pWnd->pcls->style & CS_CLASSDC) && !(pWnd->pcls->pdce) )
1903    {  /* One DCE per class to have CLASS. */
1904       pWnd->pcls->pdce = DceAllocDCE( pWnd, DCE_CLASS_DC );
1905    }
1906    else if ( pWnd->pcls->style & CS_OWNDC)
1907    {  /* Allocate a DCE for this window. */
1908       DceAllocDCE(pWnd, DCE_WINDOW_DC);
1909    }
1910
1911    return pWnd;
1912
1913 AllocError:
1914
1915    if(pWnd)
1916       UserDereferenceObject(pWnd);
1917
1918    SetLastNtError(STATUS_INSUFFICIENT_RESOURCES);
1919    return NULL;
1920 }
1921
1922 /*
1923  * @implemented
1924  */
1925 PWND FASTCALL
1926 co_UserCreateWindowEx(CREATESTRUCTW* Cs,
1927                      PUNICODE_STRING ClassName,
1928                      PLARGE_STRING WindowName)
1929 {
1930    PWND Window = NULL, ParentWindow = NULL, OwnerWindow;
1931    HWND hWnd, hWndParent, hWndOwner, hwndInsertAfter;
1932    PWINSTATION_OBJECT WinSta;
1933    PCLS Class = NULL;
1934    SIZE Size;
1935    POINT MaxPos;
1936    CBT_CREATEWNDW * pCbtCreate;
1937    LRESULT Result;
1938    USER_REFERENCE_ENTRY ParentRef, Ref;
1939    PTHREADINFO pti;
1940    DWORD dwShowMode = SW_SHOW;
1941    CREATESTRUCTW *pCsw = NULL;
1942    PVOID pszClass = NULL, pszName = NULL;
1943    DECLARE_RETURN(PWND);
1944
1945    /* Get the current window station and reference it */
1946    pti = GetW32ThreadInfo();
1947    if (pti == NULL || pti->rpdesk == NULL)
1948    {
1949       DPRINT1("Thread is not attached to a desktop! Cannot create window!\n");
1950       return NULL; //There is nothing to cleanup
1951    }
1952    WinSta = pti->rpdesk->rpwinstaParent;
1953    ObReferenceObjectByPointer(WinSta, KernelMode, ExWindowStationObjectType, 0);
1954
1955    pCsw = NULL;
1956    pCbtCreate = NULL;
1957
1958    /* Get the class and reference it*/
1959    Class = IntGetAndReferenceClass(ClassName, Cs->hInstance);
1960    if(!Class)
1961    {
1962        DPRINT1("Failed to find class %wZ\n", ClassName);
1963        RETURN(NULL);
1964    }
1965
1966    /* Now find the parent and the owner window */
1967    hWndParent = IntGetDesktopWindow();
1968    hWndOwner = NULL;
1969
1970     if (Cs->hwndParent == HWND_MESSAGE)
1971     {
1972         Cs->hwndParent = hWndParent = IntGetMessageWindow();
1973     }
1974     else if (Cs->hwndParent)
1975     {
1976         if ((Cs->style & (WS_CHILD|WS_POPUP)) != WS_CHILD)
1977             hWndOwner = Cs->hwndParent;
1978         else
1979             hWndParent = Cs->hwndParent;
1980     }
1981     else if ((Cs->style & (WS_CHILD|WS_POPUP)) == WS_CHILD)
1982     {
1983          DPRINT1("Cannot create a child window without a parrent!\n");
1984          EngSetLastError(ERROR_TLW_WITH_WSCHILD);
1985          RETURN(NULL);  /* WS_CHILD needs a parent, but WS_POPUP doesn't */
1986     }
1987
1988     ParentWindow = hWndParent ? UserGetWindowObject(hWndParent): NULL;
1989     OwnerWindow = hWndOwner ? UserGetWindowObject(hWndOwner): NULL;
1990
1991     /* FIXME: is this correct?*/
1992     if(OwnerWindow)
1993         OwnerWindow = UserGetAncestor(OwnerWindow, GA_ROOT);
1994
1995    /* Fix the position and the size of the window */
1996    if (ParentWindow)
1997    {
1998        UserRefObjectCo(ParentWindow, &ParentRef);
1999        IntFixWindowCoordinates(Cs, ParentWindow, &dwShowMode);
2000    }
2001
2002    /* Allocate and initialize the new window */
2003    Window = IntCreateWindow(Cs,
2004                             WindowName,
2005                             Class,
2006                             ParentWindow,
2007                             OwnerWindow);
2008    if(!Window)
2009    {
2010        DPRINT1("IntCreateWindow failed!\n");
2011        RETURN(0);
2012    }
2013
2014    hWnd = UserHMGetHandle(Window);
2015    hwndInsertAfter = HWND_TOP;
2016
2017    UserRefObjectCo(Window, &Ref);
2018    ObDereferenceObject(WinSta);
2019
2020    //// Check for a hook to eliminate overhead. ////
2021    if ( ISITHOOKED(WH_CBT) ||  (pti->rpdesk->pDeskInfo->fsHooks & HOOKID_TO_FLAG(WH_CBT)) )
2022    {
2023       // Allocate the calling structures Justin Case this goes Global.
2024       pCsw = ExAllocatePoolWithTag(NonPagedPool, sizeof(CREATESTRUCTW), TAG_HOOK);
2025       pCbtCreate = ExAllocatePoolWithTag(NonPagedPool, sizeof(CBT_CREATEWNDW), TAG_HOOK);
2026
2027       /* Fill the new CREATESTRUCTW */
2028       RtlCopyMemory(pCsw, Cs, sizeof(CREATESTRUCTW));
2029       pCsw->style = Window->style; /* HCBT_CREATEWND needs the real window style */
2030
2031       // Based on the assumption this is from "unicode source" user32, ReactOS, answer is yes.
2032       if (!IS_ATOM(ClassName->Buffer))
2033       {
2034          if (Window->state & WNDS_ANSICREATOR)
2035          {
2036             ANSI_STRING AnsiString;
2037             AnsiString.MaximumLength = RtlUnicodeStringToAnsiSize(ClassName)+sizeof(CHAR);
2038             pszClass = UserHeapAlloc(AnsiString.MaximumLength);
2039             RtlZeroMemory(pszClass, AnsiString.MaximumLength);
2040             AnsiString.Buffer = (PCHAR)pszClass;
2041             RtlUnicodeStringToAnsiString(&AnsiString, ClassName, FALSE);
2042          }
2043          else
2044          {
2045             UNICODE_STRING UnicodeString;
2046             UnicodeString.MaximumLength = ClassName->Length + sizeof(UNICODE_NULL);
2047             pszClass = UserHeapAlloc(UnicodeString.MaximumLength);
2048             RtlZeroMemory(pszClass, UnicodeString.MaximumLength);
2049             UnicodeString.Buffer = (PWSTR)pszClass;
2050             RtlCopyUnicodeString(&UnicodeString, ClassName);
2051          }
2052          if (pszClass) pCsw->lpszClass = UserHeapAddressToUser(pszClass);
2053       }
2054       if (WindowName->Length)
2055       {
2056          UNICODE_STRING Name;
2057          Name.Buffer = WindowName->Buffer;
2058          Name.Length = WindowName->Length;
2059          Name.MaximumLength = WindowName->MaximumLength;
2060
2061          if (Window->state & WNDS_ANSICREATOR)
2062          {
2063             ANSI_STRING AnsiString;
2064             AnsiString.MaximumLength = RtlUnicodeStringToAnsiSize(&Name)+sizeof(CHAR);
2065             pszName = UserHeapAlloc(AnsiString.MaximumLength);
2066             RtlZeroMemory(pszName, AnsiString.MaximumLength);
2067             AnsiString.Buffer = (PCHAR)pszName;
2068             RtlUnicodeStringToAnsiString(&AnsiString, &Name, FALSE);
2069          }
2070          else
2071          {
2072             UNICODE_STRING UnicodeString;
2073             UnicodeString.MaximumLength = Name.Length + sizeof(UNICODE_NULL);
2074             pszName = UserHeapAlloc(UnicodeString.MaximumLength);
2075             RtlZeroMemory(pszName, UnicodeString.MaximumLength);
2076             UnicodeString.Buffer = (PWSTR)pszName;
2077             RtlCopyUnicodeString(&UnicodeString, &Name);
2078          }
2079          if (pszName) pCsw->lpszName = UserHeapAddressToUser(pszName);
2080       }
2081
2082       pCbtCreate->lpcs = pCsw;
2083       pCbtCreate->hwndInsertAfter = hwndInsertAfter;
2084
2085       //// Call the WH_CBT hook ////
2086       Result = co_HOOK_CallHooks(WH_CBT, HCBT_CREATEWND, (WPARAM) hWnd, (LPARAM) pCbtCreate);
2087       if (Result != 0)
2088       {
2089          DPRINT1("WH_CBT HCBT_CREATEWND hook failed! 0x%x\n", Result);
2090          RETURN( (PWND) NULL);
2091       }
2092       // Write back changes.
2093       Cs->cx = pCsw->cx;
2094       Cs->cy = pCsw->cy;
2095       Cs->x = pCsw->x;
2096       Cs->y = pCsw->y;
2097       hwndInsertAfter = pCbtCreate->hwndInsertAfter;
2098    }
2099
2100    /* NCCREATE and WM_NCCALCSIZE need the original values */
2101    Cs->lpszName = (LPCWSTR) WindowName;
2102    Cs->lpszClass = (LPCWSTR) ClassName;
2103
2104    /* Send the WM_GETMINMAXINFO message*/
2105    Size.cx = Cs->cx;
2106    Size.cy = Cs->cy;
2107
2108    if ((Cs->style & WS_THICKFRAME) || !(Cs->style & (WS_POPUP | WS_CHILD)))
2109    {
2110       POINT MaxSize, MaxPos, MinTrack, MaxTrack;
2111
2112       co_WinPosGetMinMaxInfo(Window, &MaxSize, &MaxPos, &MinTrack, &MaxTrack);
2113       if (Size.cx > MaxTrack.x) Size.cx = MaxTrack.x;
2114       if (Size.cy > MaxTrack.y) Size.cy = MaxTrack.y;
2115       if (Size.cx < MinTrack.x) Size.cx = MinTrack.x;
2116       if (Size.cy < MinTrack.y) Size.cy = MinTrack.y;
2117    }
2118
2119    Window->rcWindow.left = Cs->x;
2120    Window->rcWindow.top = Cs->y;
2121    Window->rcWindow.right = Cs->x + Size.cx;
2122    Window->rcWindow.bottom = Cs->y + Size.cy;
2123    if (0 != (Window->style & WS_CHILD) && ParentWindow)
2124    {
2125       RECTL_vOffsetRect(&Window->rcWindow,
2126                         ParentWindow->rcClient.left,
2127                         ParentWindow->rcClient.top);
2128    }
2129    Window->rcClient = Window->rcWindow;
2130
2131    /* Link the window*/
2132    if (NULL != ParentWindow)
2133    {
2134       /* link the window into the siblings list */
2135       if ((Cs->style & (WS_CHILD|WS_MAXIMIZE)) == WS_CHILD)
2136           IntLinkHwnd(Window, HWND_BOTTOM);
2137       else
2138           IntLinkHwnd(Window, hwndInsertAfter);
2139    }
2140
2141    /* Send the NCCREATE message */
2142    Result = co_IntSendMessage(UserHMGetHandle(Window), WM_NCCREATE, 0, (LPARAM) Cs);
2143    if (!Result)
2144    {
2145       DPRINT1("co_UserCreateWindowEx(): NCCREATE message failed\n");
2146       RETURN((PWND)0);
2147    }
2148
2149    /* Send the WM_NCCALCSIZE message */
2150    MaxPos.x = Window->rcWindow.left;
2151    MaxPos.y = Window->rcWindow.top;
2152
2153    Result = co_WinPosGetNonClientSize(Window, &Window->rcWindow, &Window->rcClient);
2154
2155    RECTL_vOffsetRect(&Window->rcWindow, MaxPos.x - Window->rcWindow.left,
2156                                      MaxPos.y - Window->rcWindow.top);
2157
2158
2159    /* Send the WM_CREATE message. */
2160    Result = co_IntSendMessage(UserHMGetHandle(Window), WM_CREATE, 0, (LPARAM) Cs);
2161    if (Result == (LRESULT)-1)
2162    {
2163       DPRINT1("co_UserCreateWindowEx(): WM_CREATE message failed\n");
2164       RETURN((PWND)0);
2165    }
2166
2167    /* Send the EVENT_OBJECT_CREATE event*/
2168    IntNotifyWinEvent(EVENT_OBJECT_CREATE, Window, OBJID_WINDOW, CHILDID_SELF, 0);
2169
2170    /* By setting the flag below it can be examined to determine if the window
2171       was created successfully and a valid pwnd was passed back to caller since
2172       from here the function has to succeed. */
2173    Window->state2 |= WNDS2_WMCREATEMSGPROCESSED;
2174
2175    /* Send the WM_SIZE and WM_MOVE messages. */
2176    if (!(Window->state & WNDS_SENDSIZEMOVEMSGS))
2177    {
2178         co_WinPosSendSizeMove(Window);
2179    }
2180
2181    /* Show or maybe minimize or maximize the window. */
2182    if (Window->style & (WS_MINIMIZE | WS_MAXIMIZE))
2183    {
2184       RECTL NewPos;
2185       UINT16 SwFlag;
2186
2187       SwFlag = (Window->style & WS_MINIMIZE) ? SW_MINIMIZE : SW_MAXIMIZE;
2188
2189       co_WinPosMinMaximize(Window, SwFlag, &NewPos);
2190
2191       SwFlag = ((Window->style & WS_CHILD) || UserGetActiveWindow()) ?
2192                 SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED :
2193                 SWP_NOZORDER | SWP_FRAMECHANGED;
2194
2195       co_WinPosSetWindowPos(Window, 0, NewPos.left, NewPos.top,
2196                             NewPos.right, NewPos.bottom, SwFlag);
2197    }
2198
2199    /* Send the WM_PARENTNOTIFY message */
2200    IntSendParentNotify(Window, WM_CREATE);
2201
2202    /* Notify the shell that a new window was created */
2203    if ((!hWndParent) && (!hWndOwner))
2204    {
2205       co_IntShellHookNotify(HSHELL_WINDOWCREATED, (LPARAM)hWnd);
2206    }
2207
2208    /* Initialize and show the window's scrollbars */
2209    if (Window->style & WS_VSCROLL)
2210    {
2211       co_UserShowScrollBar(Window, SB_VERT, TRUE);
2212    }
2213    if (Window->style & WS_HSCROLL)
2214    {
2215       co_UserShowScrollBar(Window, SB_HORZ, TRUE);
2216    }
2217
2218    /* Show the new window */
2219    if (Cs->style & WS_VISIBLE)
2220    {
2221       if (Window->style & WS_MAXIMIZE)
2222          dwShowMode = SW_SHOW;
2223       else if (Window->style & WS_MINIMIZE)
2224          dwShowMode = SW_SHOWMINIMIZED;
2225
2226       co_WinPosShowWindow(Window, dwShowMode);
2227
2228       if (Window->ExStyle & WS_EX_MDICHILD)
2229       {
2230         co_IntSendMessage(UserHMGetHandle(ParentWindow), WM_MDIREFRESHMENU, 0, 0);
2231         /* ShowWindow won't activate child windows */
2232         co_WinPosSetWindowPos(Window, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOMOVE | SWP_NOSIZE);
2233       }
2234    }
2235
2236    DPRINT("co_UserCreateWindowEx(): Created window %X\n", hWnd);
2237    RETURN( Window);
2238
2239 CLEANUP:
2240    if (!_ret_)
2241    {
2242        DPRINT("co_UserCreateWindowEx(): Error Created window!\n");
2243        /* If the window was created, the class will be dereferenced by co_UserDestroyWindow */
2244        if (Window)
2245             co_UserDestroyWindow(Window);
2246        else if (Class)
2247            IntDereferenceClass(Class, pti->pDeskInfo, pti->ppi);
2248    }
2249
2250    if (pCsw) ExFreePoolWithTag(pCsw, TAG_HOOK);
2251    if (pCbtCreate) ExFreePoolWithTag(pCbtCreate, TAG_HOOK);
2252    if (pszName) UserHeapFree(pszName);
2253    if (pszClass) UserHeapFree(pszClass);
2254
2255    if (Window)
2256    {
2257       UserDerefObjectCo(Window);
2258       UserDereferenceObject(Window);
2259    }
2260    if (ParentWindow) UserDerefObjectCo(ParentWindow);
2261
2262    END_CLEANUP;
2263 }
2264
2265 NTSTATUS
2266 NTAPI
2267 ProbeAndCaptureLargeString(
2268     OUT PLARGE_STRING plstrSafe,
2269     IN PLARGE_STRING plstrUnsafe)
2270 {
2271     LARGE_STRING lstrTemp;
2272     PVOID pvBuffer = NULL;
2273
2274     _SEH2_TRY
2275     {
2276         /* Probe and copy the string */
2277         ProbeForRead(plstrUnsafe, sizeof(LARGE_STRING), sizeof(ULONG));
2278         lstrTemp = *plstrUnsafe;
2279     }
2280     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
2281     {
2282         /* Fail */
2283         _SEH2_YIELD(return _SEH2_GetExceptionCode();)
2284     }
2285     _SEH2_END
2286
2287     if (lstrTemp.Length != 0)
2288     {
2289         /* Allocate a buffer from paged pool */
2290         pvBuffer = ExAllocatePoolWithTag(PagedPool, lstrTemp.Length, TAG_STRING);
2291         if (!pvBuffer)
2292         {
2293             return STATUS_NO_MEMORY;
2294         }
2295
2296         _SEH2_TRY
2297         {
2298             /* Probe and copy the buffer */
2299             ProbeForRead(lstrTemp.Buffer, lstrTemp.Length, sizeof(WCHAR));
2300             RtlCopyMemory(pvBuffer, lstrTemp.Buffer, lstrTemp.Length);
2301         }
2302         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
2303         {
2304             /* Cleanup and fail */
2305             ExFreePool(pvBuffer);
2306             _SEH2_YIELD(return _SEH2_GetExceptionCode();)
2307         }
2308         _SEH2_END
2309     }
2310
2311     /* Set the output string */
2312     plstrSafe->Buffer = pvBuffer;
2313     plstrSafe->Length = lstrTemp.Length;
2314     plstrSafe->MaximumLength = lstrTemp.Length;
2315
2316     return STATUS_SUCCESS;
2317 }
2318
2319 /**
2320  * \todo Allow passing plstrClassName as ANSI.
2321  */
2322 HWND
2323 NTAPI
2324 NtUserCreateWindowEx(
2325     DWORD dwExStyle,
2326     PLARGE_STRING plstrClassName,
2327     PLARGE_STRING plstrClsVersion,
2328     PLARGE_STRING plstrWindowName,
2329     DWORD dwStyle,
2330     int x,
2331     int y,
2332     int nWidth,
2333     int nHeight,
2334     HWND hWndParent,
2335     HMENU hMenu,
2336     HINSTANCE hInstance,
2337     LPVOID lpParam,
2338     DWORD dwFlags,
2339     PVOID acbiBuffer)
2340 {
2341     NTSTATUS Status;
2342     LARGE_STRING lstrWindowName;
2343     LARGE_STRING lstrClassName;
2344     UNICODE_STRING ustrClassName;
2345     CREATESTRUCTW Cs;
2346     HWND hwnd = NULL;
2347     PWND pwnd;
2348
2349     lstrWindowName.Buffer = NULL;
2350     lstrClassName.Buffer = NULL;
2351
2352     /* Check if we got a Window name */
2353     if (plstrWindowName)
2354     {
2355         /* Copy the string to kernel mode */
2356         Status = ProbeAndCaptureLargeString(&lstrWindowName, plstrWindowName);
2357         if (!NT_SUCCESS(Status))
2358         {
2359             DPRINT1("NtUserCreateWindowEx: failed to capture plstrWindowName\n");
2360             SetLastNtError(Status);
2361             return NULL;
2362         }
2363         plstrWindowName = &lstrWindowName;
2364     }
2365
2366     /* Check if the class is an atom */
2367     if (IS_ATOM(plstrClassName))
2368     {
2369         /* It is, pass the atom in the UNICODE_STRING */
2370         ustrClassName.Buffer = (PVOID)plstrClassName;
2371         ustrClassName.Length = 0;
2372         ustrClassName.MaximumLength = 0;
2373     }
2374     else
2375     {
2376         /* It's not, capture the class name */
2377         Status = ProbeAndCaptureLargeString(&lstrClassName, plstrClassName);
2378         if (!NT_SUCCESS(Status))
2379         {
2380             DPRINT1("NtUserCreateWindowEx: failed to capture plstrClassName\n");
2381             /* Set last error, cleanup and return */
2382             SetLastNtError(Status);
2383             goto cleanup;
2384         }
2385
2386         /* We pass it on as a UNICODE_STRING */
2387         ustrClassName.Buffer = lstrClassName.Buffer;
2388         ustrClassName.Length = lstrClassName.Length;
2389         ustrClassName.MaximumLength = lstrClassName.MaximumLength;
2390     }
2391
2392     /* Fill the CREATESTRUCTW */
2393     /* we will keep here the original parameters */
2394     Cs.style = dwStyle;
2395     Cs.lpCreateParams = lpParam;
2396     Cs.hInstance = hInstance;
2397     Cs.hMenu = hMenu;
2398     Cs.hwndParent = hWndParent;
2399     Cs.cx = nWidth;
2400     Cs.cy = nHeight;
2401     Cs.x = x;
2402     Cs.y = y;
2403     Cs.lpszName = (LPCWSTR) plstrWindowName->Buffer;
2404     if (IS_ATOM(plstrClassName))
2405        Cs.lpszClass = (LPCWSTR) plstrClassName;
2406     else
2407        Cs.lpszClass = (LPCWSTR) plstrClassName->Buffer;
2408     Cs.dwExStyle = dwExStyle;
2409
2410     UserEnterExclusive();
2411
2412     /* Call the internal function */
2413     pwnd = co_UserCreateWindowEx(&Cs, &ustrClassName, plstrWindowName);
2414
2415     if(!pwnd)
2416     {
2417         DPRINT1("co_UserCreateWindowEx failed!\n");
2418     }
2419     hwnd = pwnd ? UserHMGetHandle(pwnd) : NULL;
2420
2421     UserLeave();
2422
2423 cleanup:
2424     if (lstrWindowName.Buffer)
2425     {
2426         ExFreePoolWithTag(lstrWindowName.Buffer, TAG_STRING);
2427     }
2428     if (lstrClassName.Buffer)
2429     {
2430         ExFreePoolWithTag(lstrClassName.Buffer, TAG_STRING);
2431     }
2432
2433    return hwnd;
2434 }
2435
2436
2437 BOOLEAN FASTCALL co_UserDestroyWindow(PWND Window)
2438 {
2439    HWND hWnd;
2440    PTHREADINFO ti;
2441    MSG msg;
2442
2443    ASSERT_REFS_CO(Window); // FIXME: temp hack?
2444
2445    hWnd = Window->head.h;
2446
2447    DPRINT("co_UserDestroyWindow \n");
2448
2449    /* Check for owner thread */
2450    if ( (Window->head.pti->pEThread != PsGetCurrentThread()) ||
2451         Window->head.pti != PsGetCurrentThreadWin32Thread() )
2452    {
2453       EngSetLastError(ERROR_ACCESS_DENIED);
2454       return FALSE;
2455    }
2456
2457    /* If window was created successfully and it is hooked */
2458    if ((Window->state2 & WNDS2_WMCREATEMSGPROCESSED))
2459    {
2460       if (co_HOOK_CallHooks(WH_CBT, HCBT_DESTROYWND, (WPARAM) hWnd, 0))
2461       {
2462          DPRINT1("Destroy Window WH_CBT Call Hook return!\n");
2463          return FALSE;
2464       }
2465    }
2466
2467    /* Inform the parent */
2468    if (Window->style & WS_CHILD)
2469    {
2470       IntSendParentNotify(Window, WM_DESTROY);
2471    }
2472
2473    /* Look whether the focus is within the tree of windows we will
2474     * be destroying.
2475     */
2476    if (!co_WinPosShowWindow(Window, SW_HIDE))
2477    {
2478       if (UserGetActiveWindow() == Window->head.h)
2479       {
2480          co_WinPosActivateOtherWindow(Window);
2481       }
2482    }
2483
2484    if (Window->head.pti->MessageQueue->ActiveWindow == Window->head.h)
2485       Window->head.pti->MessageQueue->ActiveWindow = NULL;
2486    if (Window->head.pti->MessageQueue->FocusWindow == Window->head.h)
2487       Window->head.pti->MessageQueue->FocusWindow = NULL;
2488    if (Window->head.pti->MessageQueue->CaptureWindow == Window->head.h)
2489       Window->head.pti->MessageQueue->CaptureWindow = NULL;
2490
2491    /*
2492     * Check if this window is the Shell's Desktop Window. If so set hShellWindow to NULL
2493     */
2494
2495    ti = PsGetCurrentThreadWin32Thread();
2496
2497    if ((ti != NULL) & (ti->pDeskInfo != NULL))
2498    {
2499       if (ti->pDeskInfo->hShellWindow == hWnd)
2500       {
2501          DPRINT1("Destroying the ShellWindow!\n");
2502          ti->pDeskInfo->hShellWindow = NULL;
2503       }
2504    }
2505
2506    IntDereferenceMessageQueue(Window->head.pti->MessageQueue);
2507
2508    IntEngWindowChanged(Window, WOC_DELETE);
2509
2510    if (!IntIsWindow(Window->head.h))
2511    {
2512       return TRUE;
2513    }
2514
2515    /* Recursively destroy owned windows */
2516
2517    if (! (Window->style & WS_CHILD))
2518    {
2519       for (;;)
2520       {
2521          BOOL GotOne = FALSE;
2522          HWND *Children;
2523          HWND *ChildHandle;
2524          PWND Child, Desktop;
2525
2526          Desktop = IntIsDesktopWindow(Window) ? Window :
2527                    UserGetWindowObject(IntGetDesktopWindow());
2528          Children = IntWinListChildren(Desktop);
2529
2530          if (Children)
2531          {
2532             for (ChildHandle = Children; *ChildHandle; ++ChildHandle)
2533             {
2534                Child = UserGetWindowObject(*ChildHandle);
2535                if (Child == NULL)
2536                   continue;
2537                if (Child->spwndOwner != Window)
2538                {
2539                   continue;
2540                }
2541
2542                if (IntWndBelongsToThread(Child, PsGetCurrentThreadWin32Thread()))
2543                {
2544                   USER_REFERENCE_ENTRY ChildRef;
2545                   UserRefObjectCo(Child, &ChildRef);//temp hack?
2546                   co_UserDestroyWindow(Child);
2547                   UserDerefObjectCo(Child);//temp hack?
2548
2549                   GotOne = TRUE;
2550                   continue;
2551                }
2552
2553                if (Child->spwndOwner != NULL)
2554                {
2555                   Child->spwndOwner = NULL;
2556                }
2557
2558             }
2559             ExFreePool(Children);
2560          }
2561          if (! GotOne)
2562          {
2563             break;
2564          }
2565       }
2566    }
2567
2568     /* Generate mouse move message for the next window */
2569     msg.message = WM_MOUSEMOVE;
2570     msg.wParam = IntGetSysCursorInfo()->ButtonsDown;
2571     msg.lParam = MAKELPARAM(gpsi->ptCursor.x, gpsi->ptCursor.y);
2572     msg.pt = gpsi->ptCursor;
2573     co_MsqInsertMouseMessage(&msg);
2574
2575    if (!IntIsWindow(Window->head.h))
2576    {
2577       return TRUE;
2578    }
2579
2580    /* Destroy the window storage */
2581    co_UserFreeWindow(Window, PsGetCurrentProcessWin32Process(), PsGetCurrentThreadWin32Thread(), TRUE);
2582
2583    return TRUE;
2584 }
2585
2586
2587 /*
2588  * @implemented
2589  */
2590 BOOLEAN APIENTRY
2591 NtUserDestroyWindow(HWND Wnd)
2592 {
2593    PWND Window;
2594    DECLARE_RETURN(BOOLEAN);
2595    BOOLEAN ret;
2596    USER_REFERENCE_ENTRY Ref;
2597
2598    DPRINT("Enter NtUserDestroyWindow\n");
2599    UserEnterExclusive();
2600
2601    if (!(Window = UserGetWindowObject(Wnd)))
2602    {
2603       RETURN(FALSE);
2604    }
2605
2606    UserRefObjectCo(Window, &Ref);//faxme: dunno if win should be reffed during destroy..
2607    ret = co_UserDestroyWindow(Window);
2608    UserDerefObjectCo(Window);//faxme: dunno if win should be reffed during destroy..
2609
2610    RETURN(ret);
2611
2612 CLEANUP:
2613    DPRINT("Leave NtUserDestroyWindow, ret=%i\n",_ret_);
2614    UserLeave();
2615    END_CLEANUP;
2616 }
2617
2618
2619 static HWND FASTCALL
2620 IntFindWindow(PWND Parent,
2621               PWND ChildAfter,
2622               RTL_ATOM ClassAtom,
2623               PUNICODE_STRING WindowName)
2624 {
2625    BOOL CheckWindowName;
2626    HWND *List, *phWnd;
2627    HWND Ret = NULL;
2628    UNICODE_STRING CurrentWindowName;
2629
2630    ASSERT(Parent);
2631
2632    CheckWindowName = WindowName->Length != 0;
2633
2634    if((List = IntWinListChildren(Parent)))
2635    {
2636       phWnd = List;
2637       if(ChildAfter)
2638       {
2639          /* skip handles before and including ChildAfter */
2640          while(*phWnd && (*(phWnd++) != ChildAfter->head.h))
2641             ;
2642       }
2643
2644       /* search children */
2645       while(*phWnd)
2646       {
2647          PWND Child;
2648          if(!(Child = UserGetWindowObject(*(phWnd++))))
2649          {
2650             continue;
2651          }
2652
2653          /* Do not send WM_GETTEXT messages in the kernel mode version!
2654             The user mode version however calls GetWindowText() which will
2655             send WM_GETTEXT messages to windows belonging to its processes */
2656          if (!ClassAtom || Child->pcls->atomClassName == ClassAtom)
2657          {
2658              // HACK: use UNICODE_STRING instead of LARGE_STRING
2659              CurrentWindowName.Buffer = Child->strName.Buffer;
2660              CurrentWindowName.Length = Child->strName.Length;
2661              CurrentWindowName.MaximumLength = Child->strName.MaximumLength;
2662              if(!CheckWindowName ||
2663                 (Child->strName.Length < 0xFFFF &&
2664                  !RtlCompareUnicodeString(WindowName, &CurrentWindowName, TRUE)))
2665              {
2666             Ret = Child->head.h;
2667             break;
2668          }
2669       }
2670       }
2671       ExFreePool(List);
2672    }
2673
2674    return Ret;
2675 }
2676
2677 /*
2678  * FUNCTION:
2679  *   Searches a window's children for a window with the specified
2680  *   class and name
2681  * ARGUMENTS:
2682  *   hwndParent     = The window whose childs are to be searched.
2683  *       NULL = desktop
2684  *       HWND_MESSAGE = message-only windows
2685  *
2686  *   hwndChildAfter = Search starts after this child window.
2687  *       NULL = start from beginning
2688  *
2689  *   ucClassName    = Class name to search for
2690  *       Reguired parameter.
2691  *
2692  *   ucWindowName   = Window name
2693  *       ->Buffer == NULL = don't care
2694  *
2695  * RETURNS:
2696  *   The HWND of the window if it was found, otherwise NULL
2697  */
2698 /*
2699  * @implemented
2700  */
2701 HWND APIENTRY
2702 NtUserFindWindowEx(HWND hwndParent,
2703                    HWND hwndChildAfter,
2704                    PUNICODE_STRING ucClassName,
2705                    PUNICODE_STRING ucWindowName,
2706                    DWORD dwUnknown)
2707 {
2708    PWND Parent, ChildAfter;
2709    UNICODE_STRING ClassName = {0}, WindowName = {0};
2710    HWND Desktop, Ret = NULL;
2711    RTL_ATOM ClassAtom = (RTL_ATOM)0;
2712    DECLARE_RETURN(HWND);
2713
2714    DPRINT("Enter NtUserFindWindowEx\n");
2715    UserEnterShared();
2716
2717    if (ucClassName != NULL || ucWindowName != NULL)
2718    {
2719        _SEH2_TRY
2720        {
2721            if (ucClassName != NULL)
2722            {
2723                ClassName = ProbeForReadUnicodeString(ucClassName);
2724                if (ClassName.Length != 0)
2725                {
2726                    ProbeForRead(ClassName.Buffer,
2727                                 ClassName.Length,
2728                                 sizeof(WCHAR));
2729                }
2730                else if (!IS_ATOM(ClassName.Buffer))
2731                {
2732                    EngSetLastError(ERROR_INVALID_PARAMETER);
2733                    _SEH2_LEAVE;
2734                }
2735
2736                if (!IntGetAtomFromStringOrAtom(&ClassName,
2737                                                &ClassAtom))
2738                {
2739                    _SEH2_LEAVE;
2740                }
2741            }
2742
2743            if (ucWindowName != NULL)
2744            {
2745                WindowName = ProbeForReadUnicodeString(ucWindowName);
2746                if (WindowName.Length != 0)
2747                {
2748                    ProbeForRead(WindowName.Buffer,
2749                                 WindowName.Length,
2750                                 sizeof(WCHAR));
2751                }
2752            }
2753        }
2754        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
2755        {
2756            SetLastNtError(_SEH2_GetExceptionCode());
2757            _SEH2_YIELD(RETURN(NULL));
2758        }
2759        _SEH2_END;
2760
2761        if (ucClassName != NULL)
2762        {
2763            if (ClassName.Length == 0 && ClassName.Buffer != NULL &&
2764                !IS_ATOM(ClassName.Buffer))
2765            {
2766                EngSetLastError(ERROR_INVALID_PARAMETER);
2767                RETURN(NULL);
2768            }
2769            else if (ClassAtom == (RTL_ATOM)0)
2770            {
2771                /* LastError code was set by IntGetAtomFromStringOrAtom */
2772                RETURN(NULL);
2773            }
2774        }
2775    }
2776
2777    Desktop = IntGetCurrentThreadDesktopWindow();
2778
2779    if(hwndParent == NULL)
2780       hwndParent = Desktop;
2781    else if(hwndParent == HWND_MESSAGE)
2782    {
2783      hwndParent = IntGetMessageWindow();
2784    }
2785
2786    if(!(Parent = UserGetWindowObject(hwndParent)))
2787    {
2788       RETURN( NULL);
2789    }
2790
2791    ChildAfter = NULL;
2792    if(hwndChildAfter && !(ChildAfter = UserGetWindowObject(hwndChildAfter)))
2793    {
2794       RETURN( NULL);
2795    }
2796
2797    _SEH2_TRY
2798    {
2799        if(Parent->head.h == Desktop)
2800        {
2801           HWND *List, *phWnd;
2802           PWND TopLevelWindow;
2803           BOOLEAN CheckWindowName;
2804           BOOLEAN WindowMatches;
2805           BOOLEAN ClassMatches;
2806
2807           /* windows searches through all top-level windows if the parent is the desktop
2808              window */
2809
2810           if((List = IntWinListChildren(Parent)))
2811           {
2812              phWnd = List;
2813
2814              if(ChildAfter)
2815              {
2816                 /* skip handles before and including ChildAfter */
2817                 while(*phWnd && (*(phWnd++) != ChildAfter->head.h))
2818                    ;
2819              }
2820
2821              CheckWindowName = WindowName.Length != 0;
2822
2823              /* search children */
2824              while(*phWnd)
2825              {
2826                  UNICODE_STRING ustr;
2827
2828                 if(!(TopLevelWindow = UserGetWindowObject(*(phWnd++))))
2829                 {
2830                    continue;
2831                 }
2832
2833                 /* Do not send WM_GETTEXT messages in the kernel mode version!
2834                    The user mode version however calls GetWindowText() which will
2835                    send WM_GETTEXT messages to windows belonging to its processes */
2836                 ustr.Buffer = TopLevelWindow->strName.Buffer;
2837                 ustr.Length = TopLevelWindow->strName.Length;
2838                 ustr.MaximumLength = TopLevelWindow->strName.MaximumLength;
2839                 WindowMatches = !CheckWindowName ||
2840                                 (TopLevelWindow->strName.Length < 0xFFFF &&
2841                                  !RtlCompareUnicodeString(&WindowName, &ustr, TRUE));
2842                 ClassMatches = (ClassAtom == (RTL_ATOM)0) ||
2843                                ClassAtom == TopLevelWindow->pcls->atomClassName;
2844
2845                 if (WindowMatches && ClassMatches)
2846                 {
2847                    Ret = TopLevelWindow->head.h;
2848                    break;
2849                 }
2850
2851                 if (IntFindWindow(TopLevelWindow, NULL, ClassAtom, &WindowName))
2852                 {
2853                    /* window returns the handle of the top-level window, in case it found
2854                       the child window */
2855                    Ret = TopLevelWindow->head.h;
2856                    break;
2857                 }
2858
2859              }
2860              ExFreePool(List);
2861           }
2862        }
2863        else
2864           Ret = IntFindWindow(Parent, ChildAfter, ClassAtom, &WindowName);
2865
2866 #if 0
2867
2868        if(Ret == NULL && hwndParent == NULL && hwndChildAfter == NULL)
2869        {
2870           /* FIXME - if both hwndParent and hwndChildAfter are NULL, we also should
2871                      search the message-only windows. Should this also be done if
2872                      Parent is the desktop window??? */
2873           PWND MsgWindows;
2874
2875           if((MsgWindows = UserGetWindowObject(IntGetMessageWindow())))
2876           {
2877              Ret = IntFindWindow(MsgWindows, ChildAfter, ClassAtom, &WindowName);
2878           }
2879        }
2880 #endif
2881    }
2882    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
2883    {
2884        SetLastNtError(_SEH2_GetExceptionCode());
2885        Ret = NULL;
2886    }
2887    _SEH2_END;
2888
2889    RETURN( Ret);
2890
2891 CLEANUP:
2892    DPRINT("Leave NtUserFindWindowEx, ret %i\n",_ret_);
2893    UserLeave();
2894    END_CLEANUP;
2895 }
2896
2897
2898 /*
2899  * @implemented
2900  */
2901 PWND FASTCALL UserGetAncestor(PWND Wnd, UINT Type)
2902 {
2903    PWND WndAncestor, Parent;
2904
2905    if (Wnd->head.h == IntGetDesktopWindow())
2906    {
2907       return NULL;
2908    }
2909
2910    switch (Type)
2911    {
2912       case GA_PARENT:
2913          {
2914             WndAncestor = Wnd->spwndParent;
2915             break;
2916          }
2917
2918       case GA_ROOT:
2919          {
2920             WndAncestor = Wnd;
2921             Parent = NULL;
2922
2923             for(;;)
2924             {
2925                if(!(Parent = WndAncestor->spwndParent))
2926                {
2927                   break;
2928                }
2929                if(IntIsDesktopWindow(Parent))
2930                {
2931                   break;
2932                }
2933
2934                WndAncestor = Parent;
2935             }
2936             break;
2937          }
2938
2939       case GA_ROOTOWNER:
2940          {
2941             WndAncestor = Wnd;
2942
2943             for (;;)
2944             {
2945                PWND Parent;
2946
2947                Parent = IntGetParent(WndAncestor);
2948
2949                if (!Parent)
2950                {
2951                   break;
2952                }
2953
2954                WndAncestor = Parent;
2955             }
2956             break;
2957          }
2958
2959       default:
2960          {
2961             return NULL;
2962          }
2963    }
2964
2965    return WndAncestor;
2966 }
2967
2968 /*
2969  * @implemented
2970  */
2971 HWND APIENTRY
2972 NtUserGetAncestor(HWND hWnd, UINT Type)
2973 {
2974    PWND Window, Ancestor;
2975    DECLARE_RETURN(HWND);
2976
2977    DPRINT("Enter NtUserGetAncestor\n");
2978    UserEnterExclusive();
2979
2980    if (!(Window = UserGetWindowObject(hWnd)))
2981    {
2982       RETURN(NULL);
2983    }
2984
2985    Ancestor = UserGetAncestor(Window, Type);
2986    /* faxme: can UserGetAncestor ever return NULL for a valid window? */
2987
2988    RETURN(Ancestor ? Ancestor->head.h : NULL);
2989
2990 CLEANUP:
2991    DPRINT("Leave NtUserGetAncestor, ret=%i\n",_ret_);
2992    UserLeave();
2993    END_CLEANUP;
2994 }
2995
2996
2997 BOOL
2998 APIENTRY
2999 NtUserGetComboBoxInfo(
3000    HWND hWnd,
3001    PCOMBOBOXINFO pcbi)
3002 {
3003    PWND Wnd;
3004    DECLARE_RETURN(BOOL);
3005
3006    DPRINT("Enter NtUserGetComboBoxInfo\n");
3007    UserEnterShared();
3008
3009    if (!(Wnd = UserGetWindowObject(hWnd)))
3010    {
3011       RETURN( FALSE );
3012    }
3013    _SEH2_TRY
3014    {
3015        if(pcbi)
3016        {
3017           ProbeForWrite(pcbi,
3018                         sizeof(COMBOBOXINFO),
3019                         1);
3020        }
3021    }
3022    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
3023    {
3024        SetLastNtError(_SEH2_GetExceptionCode());
3025        _SEH2_YIELD(RETURN(FALSE));
3026    }
3027    _SEH2_END;
3028
3029    // Pass the user pointer, it was already probed.
3030    RETURN( (BOOL) co_IntSendMessage( Wnd->head.h, CB_GETCOMBOBOXINFO, 0, (LPARAM)pcbi));
3031
3032 CLEANUP:
3033    DPRINT("Leave NtUserGetComboBoxInfo, ret=%i\n",_ret_);
3034    UserLeave();
3035    END_CLEANUP;
3036 }
3037
3038
3039 /*
3040  * @implemented
3041  */
3042 DWORD APIENTRY
3043 NtUserGetInternalWindowPos( HWND hWnd,
3044                             LPRECT rectWnd,
3045                             LPPOINT ptIcon)
3046 {
3047    PWND Window;
3048    DWORD Ret = 0;
3049    BOOL Hit = FALSE;
3050    WINDOWPLACEMENT wndpl;
3051
3052    UserEnterShared();
3053
3054    if (!(Window = UserGetWindowObject(hWnd)))
3055    {
3056       Hit = FALSE;
3057       goto Exit;
3058    }
3059
3060    _SEH2_TRY
3061    {
3062        if(rectWnd)
3063        {
3064           ProbeForWrite(rectWnd,
3065                         sizeof(RECT),
3066                         1);
3067        }
3068        if(ptIcon)
3069        {
3070           ProbeForWrite(ptIcon,
3071                         sizeof(POINT),
3072                         1);
3073        }
3074
3075    }
3076    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
3077    {
3078        SetLastNtError(_SEH2_GetExceptionCode());
3079        Hit = TRUE;
3080    }
3081    _SEH2_END;
3082
3083    wndpl.length = sizeof(WINDOWPLACEMENT);
3084
3085    if (IntGetWindowPlacement(Window, &wndpl) && !Hit)
3086    {
3087       _SEH2_TRY
3088       {
3089           if (rectWnd)
3090           {
3091              RtlCopyMemory(rectWnd, &wndpl.rcNormalPosition , sizeof(RECT));
3092           }
3093           if (ptIcon)
3094           {
3095              RtlCopyMemory(ptIcon, &wndpl.ptMinPosition, sizeof(POINT));
3096           }
3097
3098       }
3099       _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
3100       {
3101           SetLastNtError(_SEH2_GetExceptionCode());
3102           Hit = TRUE;
3103       }
3104       _SEH2_END;
3105
3106       if (!Hit) Ret = wndpl.showCmd;
3107    }
3108 Exit:
3109    UserLeave();
3110    return Ret;
3111 }
3112
3113 DWORD
3114 APIENTRY
3115 NtUserGetListBoxInfo(
3116    HWND hWnd)
3117 {
3118    PWND Wnd;
3119    DECLARE_RETURN(DWORD);
3120
3121    DPRINT("Enter NtUserGetListBoxInfo\n");
3122    UserEnterShared();
3123
3124    if (!(Wnd = UserGetWindowObject(hWnd)))
3125    {
3126       RETURN( 0 );
3127    }
3128
3129    RETURN( (DWORD) co_IntSendMessage( Wnd->head.h, LB_GETLISTBOXINFO, 0, 0 ));
3130
3131 CLEANUP:
3132    DPRINT("Leave NtUserGetListBoxInfo, ret=%i\n",_ret_);
3133    UserLeave();
3134    END_CLEANUP;
3135 }
3136
3137 /*
3138  * NtUserSetParent
3139  *
3140  * The NtUserSetParent function changes the parent window of the specified
3141  * child window.
3142  *
3143  * Remarks
3144  *    The new parent window and the child window must belong to the same
3145  *    application. If the window identified by the hWndChild parameter is
3146  *    visible, the system performs the appropriate redrawing and repainting.
3147  *    For compatibility reasons, NtUserSetParent does not modify the WS_CHILD
3148  *    or WS_POPUP window styles of the window whose parent is being changed.
3149  *
3150  * Status
3151  *    @implemented
3152  */
3153
3154 HWND APIENTRY
3155 NtUserSetParent(HWND hWndChild, HWND hWndNewParent)
3156 {
3157    DECLARE_RETURN(HWND);
3158
3159    DPRINT("Enter NtUserSetParent\n");
3160    UserEnterExclusive();
3161
3162    /*
3163       Check Parent first from user space, set it here.
3164     */
3165    if (!hWndNewParent)
3166    {
3167       hWndNewParent = IntGetDesktopWindow();
3168    }
3169    else if (hWndNewParent == HWND_MESSAGE)
3170    {
3171       hWndNewParent = IntGetMessageWindow();
3172    }
3173
3174    RETURN( co_UserSetParent(hWndChild, hWndNewParent));
3175
3176 CLEANUP:
3177    DPRINT("Leave NtUserSetParent, ret=%i\n",_ret_);
3178    UserLeave();
3179    END_CLEANUP;
3180 }
3181
3182 /*
3183  * UserGetShellWindow
3184  *
3185  * Returns a handle to shell window that was set by NtUserSetShellWindowEx.
3186  *
3187  * Status
3188  *    @implemented
3189  */
3190 HWND FASTCALL UserGetShellWindow(VOID)
3191 {
3192    PWINSTATION_OBJECT WinStaObject;
3193    HWND Ret;
3194
3195    NTSTATUS Status = IntValidateWindowStationHandle(PsGetCurrentProcess()->Win32WindowStation,
3196                      KernelMode,
3197                      0,
3198                      &WinStaObject);
3199
3200    if (!NT_SUCCESS(Status))
3201    {
3202       SetLastNtError(Status);
3203       return( (HWND)0);
3204    }
3205
3206    Ret = (HWND)WinStaObject->ShellWindow;
3207
3208    ObDereferenceObject(WinStaObject);
3209    return( Ret);
3210 }
3211
3212 /*
3213  * NtUserSetShellWindowEx
3214  *
3215  * This is undocumented function to set global shell window. The global
3216  * shell window has special handling of window position.
3217  *
3218  * Status
3219  *    @implemented
3220  */
3221 BOOL APIENTRY
3222 NtUserSetShellWindowEx(HWND hwndShell, HWND hwndListView)
3223 {
3224    PWINSTATION_OBJECT WinStaObject;
3225    PWND WndShell, WndListView;
3226    DECLARE_RETURN(BOOL);
3227    USER_REFERENCE_ENTRY Ref;
3228    NTSTATUS Status;
3229    PTHREADINFO ti;
3230
3231    DPRINT("Enter NtUserSetShellWindowEx\n");
3232    UserEnterExclusive();
3233
3234    if (!(WndShell = UserGetWindowObject(hwndShell)))
3235    {
3236       RETURN(FALSE);
3237    }
3238
3239    if(!(WndListView = UserGetWindowObject(hwndListView)))
3240    {
3241       RETURN(FALSE);
3242    }
3243
3244    Status = IntValidateWindowStationHandle(PsGetCurrentProcess()->Win32WindowStation,
3245                      KernelMode,
3246                      0,
3247                      &WinStaObject);
3248
3249    if (!NT_SUCCESS(Status))
3250    {
3251       SetLastNtError(Status);
3252       RETURN( FALSE);
3253    }
3254
3255    /*
3256     * Test if we are permitted to change the shell window.
3257     */
3258    if (WinStaObject->ShellWindow)
3259    {
3260       ObDereferenceObject(WinStaObject);
3261       RETURN( FALSE);
3262    }
3263
3264    /*
3265     * Move shell window into background.
3266     */
3267    if (hwndListView && hwndListView != hwndShell)
3268    {
3269       /*
3270        * Disabled for now to get Explorer working.
3271        * -- Filip, 01/nov/2003
3272        */
3273 #if 0
3274       co_WinPosSetWindowPos(hwndListView, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
3275 #endif
3276
3277       if (WndListView->ExStyle & WS_EX_TOPMOST)
3278       {
3279          ObDereferenceObject(WinStaObject);
3280          RETURN( FALSE);
3281       }
3282    }
3283
3284    if (WndShell->ExStyle & WS_EX_TOPMOST)
3285    {
3286       ObDereferenceObject(WinStaObject);
3287       RETURN( FALSE);
3288    }
3289
3290    UserRefObjectCo(WndShell, &Ref);
3291    co_WinPosSetWindowPos(WndShell, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
3292
3293    WinStaObject->ShellWindow = hwndShell;
3294    WinStaObject->ShellListView = hwndListView;
3295
3296    ti = GetW32ThreadInfo();
3297    if (ti->pDeskInfo) ti->pDeskInfo->hShellWindow = hwndShell;
3298
3299    UserDerefObjectCo(WndShell);
3300
3301    ObDereferenceObject(WinStaObject);
3302    RETURN( TRUE);
3303
3304 CLEANUP:
3305    DPRINT("Leave NtUserSetShellWindowEx, ret=%i\n",_ret_);
3306    UserLeave();
3307    END_CLEANUP;
3308 }
3309
3310 /*
3311  * NtUserGetSystemMenu
3312  *
3313  * The NtUserGetSystemMenu function allows the application to access the
3314  * window menu (also known as the system menu or the control menu) for
3315  * copying and modifying.
3316  *
3317  * Parameters
3318  *    hWnd
3319  *       Handle to the window that will own a copy of the window menu.
3320  *    bRevert
3321  *       Specifies the action to be taken. If this parameter is FALSE,
3322  *       NtUserGetSystemMenu returns a handle to the copy of the window menu
3323  *       currently in use. The copy is initially identical to the window menu
3324  *       but it can be modified.
3325  *       If this parameter is TRUE, GetSystemMenu resets the window menu back
3326  *       to the default state. The previous window menu, if any, is destroyed.
3327  *
3328  * Return Value
3329  *    If the bRevert parameter is FALSE, the return value is a handle to a
3330  *    copy of the window menu. If the bRevert parameter is TRUE, the return
3331  *    value is NULL.
3332  *
3333  * Status
3334  *    @implemented
3335  */
3336
3337 HMENU APIENTRY
3338 NtUserGetSystemMenu(HWND hWnd, BOOL bRevert)
3339 {
3340    PWND Window;
3341    PMENU_OBJECT Menu;
3342    DECLARE_RETURN(HMENU);
3343
3344    DPRINT("Enter NtUserGetSystemMenu\n");
3345    UserEnterShared();
3346
3347    if (!(Window = UserGetWindowObject(hWnd)))
3348    {
3349       RETURN(NULL);
3350    }
3351
3352    if (!(Menu = IntGetSystemMenu(Window, bRevert, FALSE)))
3353    {
3354       RETURN(NULL);
3355    }
3356
3357    RETURN(Menu->MenuInfo.Self);
3358
3359 CLEANUP:
3360    DPRINT("Leave NtUserGetSystemMenu, ret=%i\n",_ret_);
3361    UserLeave();
3362    END_CLEANUP;
3363 }
3364
3365 /*
3366  * NtUserSetSystemMenu
3367  *
3368  * Status
3369  *    @implemented
3370  */
3371
3372 BOOL APIENTRY
3373 NtUserSetSystemMenu(HWND hWnd, HMENU hMenu)
3374 {
3375    BOOL Result = FALSE;
3376    PWND Window;
3377    PMENU_OBJECT Menu;
3378    DECLARE_RETURN(BOOL);
3379
3380    DPRINT("Enter NtUserSetSystemMenu\n");
3381    UserEnterExclusive();
3382
3383    if (!(Window = UserGetWindowObject(hWnd)))
3384    {
3385       RETURN( FALSE);
3386    }
3387
3388    if (hMenu)
3389    {
3390       /*
3391        * Assign new menu handle.
3392        */
3393       if (!(Menu = UserGetMenuObject(hMenu)))
3394       {
3395          RETURN( FALSE);
3396       }
3397
3398       Result = IntSetSystemMenu(Window, Menu);
3399    }
3400
3401    RETURN( Result);
3402
3403 CLEANUP:
3404    DPRINT("Leave NtUserSetSystemMenu, ret=%i\n",_ret_);
3405    UserLeave();
3406    END_CLEANUP;
3407 }
3408
3409 LONG FASTCALL
3410 co_UserSetWindowLong(HWND hWnd, DWORD Index, LONG NewValue, BOOL Ansi)
3411 {
3412    PWND Window, Parent;
3413    PWINSTATION_OBJECT WindowStation;
3414    LONG OldValue;
3415    STYLESTRUCT Style;
3416
3417    if (hWnd == IntGetDesktopWindow())
3418    {
3419       EngSetLastError(STATUS_ACCESS_DENIED);
3420       return( 0);
3421    }
3422
3423    if (!(Window = UserGetWindowObject(hWnd)))
3424    {
3425       return( 0);
3426    }
3427
3428    if ((INT)Index >= 0)
3429    {
3430       if ((Index + sizeof(LONG)) > Window->cbwndExtra)
3431       {
3432          EngSetLastError(ERROR_INVALID_INDEX);
3433          return( 0);
3434       }
3435
3436       OldValue = *((LONG *)((PCHAR)(Window + 1) + Index));
3437 /*
3438       if ( Index == DWLP_DLGPROC && Wnd->state & WNDS_DIALOGWINDOW)
3439       {
3440          OldValue = (LONG)IntSetWindowProc( Wnd,
3441                                            (WNDPROC)NewValue,
3442                                             Ansi);
3443          if (!OldValue) return 0;
3444       }
3445 */
3446       *((LONG *)((PCHAR)(Window + 1) + Index)) = NewValue;
3447    }
3448    else
3449    {
3450       switch (Index)
3451       {
3452          case GWL_EXSTYLE:
3453             OldValue = (LONG) Window->ExStyle;
3454             Style.styleOld = OldValue;
3455             Style.styleNew = NewValue;
3456
3457             /*
3458              * Remove extended window style bit WS_EX_TOPMOST for shell windows.
3459              */
3460             WindowStation = Window->head.pti->rpdesk->rpwinstaParent;
3461             if(WindowStation)
3462             {
3463                if (hWnd == WindowStation->ShellWindow || hWnd == WindowStation->ShellListView)
3464                   Style.styleNew &= ~WS_EX_TOPMOST;
3465             }
3466
3467             co_IntSendMessage(hWnd, WM_STYLECHANGING, GWL_EXSTYLE, (LPARAM) &Style);
3468             Window->ExStyle = (DWORD)Style.styleNew;
3469             co_IntSendMessage(hWnd, WM_STYLECHANGED, GWL_EXSTYLE, (LPARAM) &Style);
3470             break;
3471
3472          case GWL_STYLE:
3473             OldValue = (LONG) Window->style;
3474             Style.styleOld = OldValue;
3475             Style.styleNew = NewValue;
3476             co_IntSendMessage(hWnd, WM_STYLECHANGING, GWL_STYLE, (LPARAM) &Style);
3477             Window->style = (DWORD)Style.styleNew;
3478             co_IntSendMessage(hWnd, WM_STYLECHANGED, GWL_STYLE, (LPARAM) &Style);
3479             break;
3480
3481          case GWL_WNDPROC:
3482          {
3483             if ( Window->head.pti->ppi != PsGetCurrentProcessWin32Process() ||
3484                  Window->fnid & FNID_FREED)
3485             {
3486                EngSetLastError(ERROR_ACCESS_DENIED);
3487                return( 0);
3488             }
3489             OldValue = (LONG)IntSetWindowProc(Window,
3490                                               (WNDPROC)NewValue,
3491                                               Ansi);
3492             break;
3493          }
3494
3495          case GWL_HINSTANCE:
3496             OldValue = (LONG) Window->hModule;
3497             Window->hModule = (HINSTANCE) NewValue;
3498             break;
3499
3500          case GWL_HWNDPARENT:
3501             Parent = Window->spwndParent;
3502             if (Parent && (Parent->head.h == IntGetDesktopWindow()))
3503                OldValue = (LONG) IntSetOwner(Window->head.h, (HWND) NewValue);
3504             else
3505                OldValue = (LONG) co_UserSetParent(Window->head.h, (HWND) NewValue);
3506             break;
3507
3508          case GWL_ID:
3509             OldValue = (LONG) Window->IDMenu;
3510             Window->IDMenu = (UINT) NewValue;
3511             break;
3512
3513          case GWL_USERDATA:
3514             OldValue = Window->dwUserData;
3515             Window->dwUserData = NewValue;
3516             break;
3517
3518          default:
3519             DPRINT1("NtUserSetWindowLong(): Unsupported index %d\n", Index);
3520             EngSetLastError(ERROR_INVALID_INDEX);
3521             OldValue = 0;
3522             break;
3523       }
3524    }
3525
3526    return( OldValue);
3527 }
3528
3529 /*
3530  * NtUserSetWindowLong
3531  *
3532  * The NtUserSetWindowLong function changes an attribute of the specified
3533  * window. The function also sets the 32-bit (long) value at the specified
3534  * offset into the extra window memory.
3535  *
3536  * Status
3537  *    @implemented
3538  */
3539
3540 LONG APIENTRY
3541 NtUserSetWindowLong(HWND hWnd, DWORD Index, LONG NewValue, BOOL Ansi)
3542 {
3543    DECLARE_RETURN(LONG);
3544
3545    DPRINT("Enter NtUserSetWindowLong\n");
3546    UserEnterExclusive();
3547
3548    RETURN( co_UserSetWindowLong(hWnd, Index, NewValue, Ansi));
3549
3550 CLEANUP:
3551    DPRINT("Leave NtUserSetWindowLong, ret=%i\n",_ret_);
3552    UserLeave();
3553    END_CLEANUP;
3554 }
3555
3556 /*
3557  * NtUserSetWindowWord
3558  *
3559  * Legacy function similar to NtUserSetWindowLong.
3560  *
3561  * Status
3562  *    @implemented
3563  */
3564
3565 WORD APIENTRY
3566 NtUserSetWindowWord(HWND hWnd, INT Index, WORD NewValue)
3567 {
3568    PWND Window;
3569    WORD OldValue;
3570    DECLARE_RETURN(WORD);
3571
3572    DPRINT("Enter NtUserSetWindowWord\n");
3573    UserEnterExclusive();
3574
3575    if (!(Window = UserGetWindowObject(hWnd)))
3576    {
3577       RETURN( 0);
3578    }
3579
3580    switch (Index)
3581    {
3582       case GWL_ID:
3583       case GWL_HINSTANCE:
3584       case GWL_HWNDPARENT:
3585          RETURN( co_UserSetWindowLong(Window->head.h, Index, (UINT)NewValue, TRUE));
3586       default:
3587          if (Index < 0)
3588          {
3589             EngSetLastError(ERROR_INVALID_INDEX);
3590             RETURN( 0);
3591          }
3592    }
3593
3594    if (Index > Window->cbwndExtra - sizeof(WORD))
3595    {
3596       EngSetLastError(ERROR_INVALID_PARAMETER);
3597       RETURN( 0);
3598    }
3599
3600    OldValue = *((WORD *)((PCHAR)(Window + 1) + Index));
3601    *((WORD *)((PCHAR)(Window + 1) + Index)) = NewValue;
3602
3603    RETURN( OldValue);
3604
3605 CLEANUP:
3606    DPRINT("Leave NtUserSetWindowWord, ret=%i\n",_ret_);
3607    UserLeave();
3608    END_CLEANUP;
3609 }
3610
3611 /*
3612  * @implemented
3613  */
3614 BOOL APIENTRY
3615 NtUserGetWindowPlacement(HWND hWnd,
3616                          WINDOWPLACEMENT *lpwndpl)
3617 {
3618    PWND Wnd;
3619    POINT Size;
3620    WINDOWPLACEMENT Safepl;
3621    NTSTATUS Status;
3622    DECLARE_RETURN(BOOL);
3623
3624    DPRINT("Enter NtUserGetWindowPlacement\n");
3625    UserEnterShared();
3626
3627    if (!(Wnd = UserGetWindowObject(hWnd)))
3628    {
3629       RETURN( FALSE);
3630    }
3631
3632    Status = MmCopyFromCaller(&Safepl, lpwndpl, sizeof(WINDOWPLACEMENT));
3633    if(!NT_SUCCESS(Status))
3634    {
3635       SetLastNtError(Status);
3636       RETURN( FALSE);
3637    }
3638    if(Safepl.length != sizeof(WINDOWPLACEMENT))
3639    {
3640       RETURN( FALSE);
3641    }
3642
3643    Safepl.flags = 0;
3644    if (0 == (Wnd->style & WS_VISIBLE))
3645    {
3646       Safepl.showCmd = SW_HIDE;
3647    }
3648    else if ((0 != (Wnd->state2 & WNDS2_MAXIMIZEBUTTONDOWN) ||
3649             0 != (Wnd->style & WS_MAXIMIZE)) &&
3650             0 == (Wnd->style & WS_MINIMIZE))
3651    {
3652       Safepl.showCmd = SW_SHOWMAXIMIZED;
3653    }
3654    else if (0 != (Wnd->style & WS_MINIMIZE))
3655    {
3656       Safepl.showCmd = SW_SHOWMINIMIZED;
3657    }
3658    else if (0 != (Wnd->style & WS_VISIBLE))
3659    {
3660       Safepl.showCmd = SW_SHOWNORMAL;
3661    }
3662
3663    Size.x = Wnd->rcWindow.left;
3664    Size.y = Wnd->rcWindow.top;
3665    WinPosInitInternalPos(Wnd, &Size,
3666                          &Wnd->rcWindow);
3667
3668    Safepl.rcNormalPosition = Wnd->InternalPos.NormalRect;
3669    Safepl.ptMinPosition = Wnd->InternalPos.IconPos;
3670    Safepl.ptMaxPosition = Wnd->InternalPos.MaxPos;
3671
3672    Status = MmCopyToCaller(lpwndpl, &Safepl, sizeof(WINDOWPLACEMENT));
3673    if(!NT_SUCCESS(Status))
3674    {
3675       SetLastNtError(Status);
3676       RETURN( FALSE);
3677    }
3678
3679    RETURN( TRUE);
3680
3681 CLEANUP:
3682    DPRINT("Leave NtUserGetWindowPlacement, ret=%i\n",_ret_);
3683    UserLeave();
3684    END_CLEANUP;
3685 }
3686
3687 /*
3688  * @implemented
3689  */
3690 BOOL APIENTRY
3691 NtUserMoveWindow(
3692    HWND hWnd,
3693    int X,
3694    int Y,
3695    int nWidth,
3696    int nHeight,
3697    BOOL bRepaint)
3698 {
3699    return NtUserSetWindowPos(hWnd, 0, X, Y, nWidth, nHeight,
3700                              (bRepaint ? SWP_NOZORDER | SWP_NOACTIVATE :
3701                               SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW));
3702 }
3703
3704 /*
3705  QueryWindow based on KJK::Hyperion and James Tabor.
3706
3707  0 = QWUniqueProcessId
3708  1 = QWUniqueThreadId
3709  2 = QWActiveWindow
3710  3 = QWFocusWindow
3711  4 = QWIsHung            Implements IsHungAppWindow found
3712                                 by KJK::Hyperion.
3713
3714  9 = QWKillWindow        When I called this with hWnd ==
3715                            DesktopWindow, it shutdown the system
3716                            and rebooted.
3717 */
3718 /*
3719  * @implemented
3720  */
3721 DWORD APIENTRY
3722 NtUserQueryWindow(HWND hWnd, DWORD Index)
3723 {
3724    PWND pWnd;
3725    DWORD Result;
3726    DECLARE_RETURN(UINT);
3727
3728    DPRINT("Enter NtUserQueryWindow\n");
3729    UserEnterShared();
3730
3731    if (!(pWnd = UserGetWindowObject(hWnd)))
3732    {
3733       RETURN( 0);
3734    }
3735
3736    switch(Index)
3737    {
3738       case QUERY_WINDOW_UNIQUE_PROCESS_ID:
3739          Result = (DWORD)IntGetWndProcessId(pWnd);
3740          break;
3741
3742       case QUERY_WINDOW_UNIQUE_THREAD_ID:
3743          Result = (DWORD)IntGetWndThreadId(pWnd);
3744          break;
3745
3746       case QUERY_WINDOW_ACTIVE:
3747          Result = (DWORD)UserGetActiveWindow();
3748          break;
3749
3750       case QUERY_WINDOW_FOCUS:
3751          Result = (DWORD)IntGetFocusWindow();
3752          break;
3753
3754       case QUERY_WINDOW_ISHUNG:
3755          Result = (DWORD)MsqIsHung(pWnd->head.pti->MessageQueue);
3756          break;
3757
3758       case QUERY_WINDOW_REAL_ID:
3759          Result = (DWORD)pWnd->head.pti->pEThread->Cid.UniqueProcess;
3760
3761       default:
3762          Result = (DWORD)NULL;
3763          break;
3764    }
3765
3766    RETURN( Result);
3767
3768 CLEANUP:
3769    DPRINT("Leave NtUserQueryWindow, ret=%i\n",_ret_);
3770    UserLeave();
3771    END_CLEANUP;
3772 }
3773
3774
3775 /*
3776  * @implemented
3777  */
3778 UINT APIENTRY
3779 NtUserRegisterWindowMessage(PUNICODE_STRING MessageNameUnsafe)
3780 {
3781    UNICODE_STRING SafeMessageName;
3782    NTSTATUS Status;
3783    UINT Ret;
3784    DECLARE_RETURN(UINT);
3785
3786    DPRINT("Enter NtUserRegisterWindowMessage\n");
3787    UserEnterExclusive();
3788
3789    if(MessageNameUnsafe == NULL)
3790    {
3791       EngSetLastError(ERROR_INVALID_PARAMETER);
3792       RETURN( 0);
3793    }
3794
3795    Status = IntSafeCopyUnicodeStringTerminateNULL(&SafeMessageName, MessageNameUnsafe);
3796    if(!NT_SUCCESS(Status))
3797    {
3798       SetLastNtError(Status);
3799       RETURN( 0);
3800    }
3801
3802    Ret = (UINT)IntAddAtom(SafeMessageName.Buffer);
3803    if (SafeMessageName.Buffer)
3804       ExFreePoolWithTag(SafeMessageName.Buffer, TAG_STRING);
3805    RETURN( Ret);
3806
3807 CLEANUP:
3808    DPRINT("Leave NtUserRegisterWindowMessage, ret=%i\n",_ret_);
3809    UserLeave();
3810    END_CLEANUP;
3811 }
3812
3813
3814 /*
3815  * @implemented
3816  */
3817 BOOL APIENTRY
3818 NtUserSetMenu(
3819    HWND hWnd,
3820    HMENU Menu,
3821    BOOL Repaint)
3822 {
3823    PWND Window;
3824    BOOL Changed;
3825    DECLARE_RETURN(BOOL);
3826
3827    DPRINT("Enter NtUserSetMenu\n");
3828    UserEnterExclusive();
3829
3830    if (!(Window = UserGetWindowObject(hWnd)))
3831    {
3832       RETURN( FALSE);
3833    }
3834
3835    if (! IntSetMenu(Window, Menu, &Changed))
3836    {
3837       RETURN( FALSE);
3838    }
3839
3840    if (Changed && Repaint)
3841    {
3842       USER_REFERENCE_ENTRY Ref;
3843
3844       UserRefObjectCo(Window, &Ref);
3845       co_WinPosSetWindowPos(Window, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE |
3846                             SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED);
3847
3848       UserDerefObjectCo(Window);
3849    }
3850
3851    RETURN( TRUE);
3852
3853 CLEANUP:
3854    DPRINT("Leave NtUserSetMenu, ret=%i\n",_ret_);
3855    UserLeave();
3856    END_CLEANUP;
3857 }
3858
3859
3860 /*
3861  * @implemented
3862  */
3863 BOOL APIENTRY
3864 NtUserSetWindowFNID(HWND hWnd,
3865                     WORD fnID)
3866 {
3867    PWND Wnd;
3868    DECLARE_RETURN(BOOL);
3869
3870    DPRINT("Enter NtUserSetWindowFNID\n");
3871    UserEnterExclusive();
3872
3873    if (!(Wnd = UserGetWindowObject(hWnd)))
3874    {
3875       RETURN( FALSE);
3876    }
3877
3878    if (Wnd->head.pti->ppi != PsGetCurrentProcessWin32Process())
3879    {
3880       EngSetLastError(ERROR_ACCESS_DENIED);
3881       RETURN( FALSE);
3882    }
3883
3884    // From user land we only set these.
3885    if (fnID != FNID_DESTROY)
3886    { //       Hacked so we can mark desktop~!
3887       if ( (/*(fnID < FNID_BUTTON)*/ (fnID < FNID_FIRST) && (fnID > FNID_GHOST)) ||
3888            Wnd->fnid != 0 )
3889       {
3890          EngSetLastError(ERROR_INVALID_PARAMETER);
3891          RETURN( FALSE);
3892       }
3893    }
3894
3895    Wnd->fnid |= fnID;
3896    RETURN( TRUE);
3897
3898 CLEANUP:
3899    DPRINT("Leave NtUserSetWindowFNID\n");
3900    UserLeave();
3901    END_CLEANUP;
3902 }
3903
3904
3905 /*
3906  * @implemented
3907  */
3908 BOOL APIENTRY
3909 NtUserSetWindowPlacement(HWND hWnd,
3910                          WINDOWPLACEMENT *lpwndpl)
3911 {
3912    PWND Wnd;
3913    WINDOWPLACEMENT Safepl;
3914    NTSTATUS Status;
3915    DECLARE_RETURN(BOOL);
3916    USER_REFERENCE_ENTRY Ref;
3917
3918    DPRINT("Enter NtUserSetWindowPlacement\n");
3919    UserEnterExclusive();
3920
3921    if (!(Wnd = UserGetWindowObject(hWnd)))
3922    {
3923       RETURN( FALSE);
3924    }
3925
3926    Status = MmCopyFromCaller(&Safepl, lpwndpl, sizeof(WINDOWPLACEMENT));
3927    if(!NT_SUCCESS(Status))
3928    {
3929       SetLastNtError(Status);
3930       RETURN( FALSE);
3931    }
3932    if(Safepl.length != sizeof(WINDOWPLACEMENT))
3933    {
3934       RETURN( FALSE);
3935    }
3936
3937    UserRefObjectCo(Wnd, &Ref);
3938
3939    if ((Wnd->style & (WS_MAXIMIZE | WS_MINIMIZE)) == 0)
3940    {
3941       co_WinPosSetWindowPos(Wnd, NULL,
3942                             Safepl.rcNormalPosition.left, Safepl.rcNormalPosition.top,
3943                             Safepl.rcNormalPosition.right - Safepl.rcNormalPosition.left,
3944                             Safepl.rcNormalPosition.bottom - Safepl.rcNormalPosition.top,
3945                             SWP_NOZORDER | SWP_NOACTIVATE);
3946    }
3947
3948    /* FIXME - change window status */
3949    co_WinPosShowWindow(Wnd, Safepl.showCmd);
3950
3951    Wnd->InternalPosInitialized = TRUE;
3952    Wnd->InternalPos.NormalRect = Safepl.rcNormalPosition;
3953    Wnd->InternalPos.IconPos = Safepl.ptMinPosition;
3954    Wnd->InternalPos.MaxPos = Safepl.ptMaxPosition;
3955
3956    UserDerefObjectCo(Wnd);
3957    RETURN(TRUE);
3958
3959 CLEANUP:
3960    DPRINT("Leave NtUserSetWindowPlacement, ret=%i\n",_ret_);
3961    UserLeave();
3962    END_CLEANUP;
3963 }
3964
3965
3966 /*
3967  * @implemented
3968  */
3969 BOOL APIENTRY
3970 NtUserSetWindowPos(
3971    HWND hWnd,
3972    HWND hWndInsertAfter,
3973    int X,
3974    int Y,
3975    int cx,
3976    int cy,
3977    UINT uFlags)
3978 {
3979    DECLARE_RETURN(BOOL);
3980    PWND Window;
3981    BOOL ret;
3982    USER_REFERENCE_ENTRY Ref;
3983
3984    DPRINT("Enter NtUserSetWindowPos\n");
3985    UserEnterExclusive();
3986
3987    if (!(Window = UserGetWindowObject(hWnd)))
3988    {
3989       RETURN(FALSE);
3990    }
3991
3992    /* First make sure that coordinates are valid for WM_WINDOWPOSCHANGING */
3993    if (!(uFlags & SWP_NOMOVE))
3994    {
3995       if (X < -32768) X = -32768;
3996       else if (X > 32767) X = 32767;
3997       if (Y < -32768) Y = -32768;
3998       else if (Y > 32767) Y = 32767;
3999    }
4000    if (!(uFlags & SWP_NOSIZE))
4001    {
4002       if (cx < 0) cx = 0;
4003       else if (cx > 32767) cx = 32767;
4004       if (cy < 0) cy = 0;
4005       else if (cy > 32767) cy = 32767;
4006    }
4007
4008    UserRefObjectCo(Window, &Ref);
4009    ret = co_WinPosSetWindowPos(Window, hWndInsertAfter, X, Y, cx, cy, uFlags);
4010    UserDerefObjectCo(Window);
4011
4012    RETURN(ret);
4013
4014 CLEANUP:
4015    DPRINT("Leave NtUserSetWindowPos, ret=%i\n",_ret_);
4016    UserLeave();
4017    END_CLEANUP;
4018 }
4019
4020 /*
4021  * @implemented
4022  */
4023 INT APIENTRY
4024 NtUserSetWindowRgn(
4025    HWND hWnd,
4026    HRGN hRgn,
4027    BOOL bRedraw)
4028 {
4029    HRGN hrgnCopy;
4030    PWND Window;
4031    INT flags = (SWP_NOCLIENTSIZE|SWP_NOCLIENTMOVE|SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE);
4032    BOOLEAN Ret = FALSE;
4033    DECLARE_RETURN(INT);
4034
4035    DPRINT("Enter NtUserSetWindowRgn\n");
4036    UserEnterExclusive();
4037
4038    if (!(Window = UserGetWindowObject(hWnd)))
4039    {
4040       RETURN( 0);
4041    }
4042
4043    if (hRgn) // The region will be deleted in user32.
4044    {
4045       if (GDIOBJ_ValidateHandle(hRgn, GDI_OBJECT_TYPE_REGION))
4046       {
4047          hrgnCopy = IntSysCreateRectRgn(0, 0, 0, 0);
4048
4049          NtGdiCombineRgn(hrgnCopy, hRgn, 0, RGN_COPY);
4050       }
4051       else
4052          RETURN( 0);
4053    }
4054    else
4055    {
4056       hrgnCopy = NULL;
4057    }
4058
4059    if (Window->hrgnClip)
4060    {
4061       /* Delete no longer needed region handle */
4062       GreDeleteObject(Window->hrgnClip);
4063    }
4064
4065    if (hrgnCopy)
4066    {
4067       if (Window->fnid != FNID_DESKTOP)
4068          NtGdiOffsetRgn(hrgnCopy, Window->rcWindow.left, Window->rcWindow.top);
4069
4070       /* Set public ownership */
4071       IntGdiSetRegionOwner(hrgnCopy, GDI_OBJ_HMGR_PUBLIC);
4072    }
4073    Window->hrgnClip = hrgnCopy;
4074
4075    Ret = co_WinPosSetWindowPos(Window, HWND_TOP, 0, 0, 0, 0, bRedraw ? flags : (flags|SWP_NOREDRAW) );
4076
4077    RETURN( (INT)Ret);
4078
4079 CLEANUP:
4080    DPRINT("Leave NtUserSetWindowRgn, ret=%i\n",_ret_);
4081    UserLeave();
4082    END_CLEANUP;
4083 }
4084
4085
4086 /*
4087  * @implemented
4088  */
4089 BOOL APIENTRY
4090 NtUserShowWindow(HWND hWnd, LONG nCmdShow)
4091 {
4092    PWND Window;
4093    BOOL ret;
4094    DECLARE_RETURN(BOOL);
4095    USER_REFERENCE_ENTRY Ref;
4096
4097    DPRINT("Enter NtUserShowWindow\n");
4098    UserEnterExclusive();
4099
4100    if (!(Window = UserGetWindowObject(hWnd)))
4101    {
4102       RETURN(FALSE);
4103    }
4104
4105    UserRefObjectCo(Window, &Ref);
4106    ret = co_WinPosShowWindow(Window, nCmdShow);
4107    UserDerefObjectCo(Window);
4108
4109    RETURN(ret);
4110
4111 CLEANUP:
4112    DPRINT("Leave NtUserShowWindow, ret=%i\n",_ret_);
4113    UserLeave();
4114    END_CLEANUP;
4115 }
4116
4117
4118 /*
4119  * @unimplemented
4120  */
4121 BOOL APIENTRY
4122 NtUserShowWindowAsync(HWND hWnd, LONG nCmdShow)
4123 {
4124 #if 0
4125    UNIMPLEMENTED
4126    return 0;
4127 #else
4128    return NtUserShowWindow(hWnd, nCmdShow);
4129 #endif
4130 }
4131
4132 /*
4133  *    @implemented
4134  */
4135 HWND APIENTRY
4136 NtUserWindowFromPoint(LONG X, LONG Y)
4137 {
4138    POINT pt;
4139    HWND Ret;
4140    PWND DesktopWindow = NULL, Window = NULL;
4141    USHORT hittest;
4142    DECLARE_RETURN(HWND);
4143    USER_REFERENCE_ENTRY Ref;
4144
4145    DPRINT("Enter NtUserWindowFromPoint\n");
4146    UserEnterExclusive();
4147
4148    if ((DesktopWindow = UserGetWindowObject(IntGetDesktopWindow())))
4149    {
4150       PTHREADINFO pti;
4151
4152       pt.x = X;
4153       pt.y = Y;
4154
4155       //hmm... threads live on desktops thus we have a reference on the desktop and indirectly the desktop window
4156       //its possible this referencing is useless, thou it shouldnt hurt...
4157       UserRefObjectCo(DesktopWindow, &Ref);
4158
4159       pti = PsGetCurrentThreadWin32Thread();
4160       Window = co_WinPosWindowFromPoint(DesktopWindow, &pt, &hittest);
4161
4162       if(Window)
4163       {
4164          Ret = Window->head.h;
4165
4166          RETURN( Ret);
4167       }
4168    }
4169
4170    RETURN( NULL);
4171
4172 CLEANUP:
4173    if (Window) UserDereferenceObject(Window);
4174    if (DesktopWindow) UserDerefObjectCo(DesktopWindow);
4175
4176    DPRINT("Leave NtUserWindowFromPoint, ret=%i\n",_ret_);
4177    UserLeave();
4178    END_CLEANUP;
4179
4180 }
4181
4182
4183 /*
4184  * NtUserDefSetText
4185  *
4186  * Undocumented function that is called from DefWindowProc to set
4187  * window text.
4188  *
4189  * Status
4190  *    @implemented
4191  */
4192 BOOL APIENTRY
4193 NtUserDefSetText(HWND hWnd, PLARGE_STRING WindowText)
4194 {
4195    PWND Wnd;
4196    LARGE_STRING SafeText;
4197    UNICODE_STRING UnicodeString;
4198    BOOL Ret = TRUE;
4199
4200    DPRINT("Enter NtUserDefSetText\n");
4201
4202    if (WindowText != NULL)
4203    {
4204       _SEH2_TRY
4205       {
4206          SafeText = ProbeForReadLargeString(WindowText);
4207       }
4208       _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
4209       {
4210          Ret = FALSE;
4211          SetLastNtError(_SEH2_GetExceptionCode());
4212       }
4213       _SEH2_END;
4214
4215       if (!Ret)
4216          return FALSE;
4217    }
4218    else
4219       return TRUE;
4220
4221    UserEnterExclusive();
4222
4223    if(!(Wnd = UserGetWindowObject(hWnd)))
4224    {
4225       UserLeave();
4226       return FALSE;
4227    }
4228
4229    // ReactOS uses Unicode and not mixed. Up/Down converting will take time.
4230    // Brought to you by: The Wine Project! Dysfunctional Thought Processes!
4231    // Now we know what the bAnsi is for.
4232    RtlInitUnicodeString(&UnicodeString, NULL);
4233    if (SafeText.Buffer)
4234    {
4235       _SEH2_TRY
4236       {
4237          if (SafeText.bAnsi)
4238             ProbeForRead(SafeText.Buffer, SafeText.Length, sizeof(CHAR));
4239          else
4240             ProbeForRead(SafeText.Buffer, SafeText.Length, sizeof(WCHAR));
4241          Ret = RtlLargeStringToUnicodeString(&UnicodeString, &SafeText);
4242       }
4243       _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
4244       {
4245          Ret = FALSE;
4246          SetLastNtError(_SEH2_GetExceptionCode());
4247       }
4248       _SEH2_END;
4249       if (!Ret) goto Exit;
4250    }
4251
4252    if (UnicodeString.Length != 0)
4253    {
4254       if (Wnd->strName.MaximumLength > 0 &&
4255           UnicodeString.Length <= Wnd->strName.MaximumLength - sizeof(UNICODE_NULL))
4256       {
4257          ASSERT(Wnd->strName.Buffer != NULL);
4258
4259          Wnd->strName.Length = UnicodeString.Length;
4260          Wnd->strName.Buffer[UnicodeString.Length / sizeof(WCHAR)] = L'\0';
4261          RtlCopyMemory(Wnd->strName.Buffer,
4262                               UnicodeString.Buffer,
4263                               UnicodeString.Length);
4264       }
4265       else
4266       {
4267          PWCHAR buf;
4268          Wnd->strName.MaximumLength = Wnd->strName.Length = 0;
4269          buf = Wnd->strName.Buffer;
4270          Wnd->strName.Buffer = NULL;
4271          if (buf != NULL)
4272          {
4273             DesktopHeapFree(Wnd->head.rpdesk, buf);
4274          }
4275
4276          Wnd->strName.Buffer = DesktopHeapAlloc(Wnd->head.rpdesk,
4277                                                    UnicodeString.Length + sizeof(UNICODE_NULL));
4278          if (Wnd->strName.Buffer != NULL)
4279          {
4280             Wnd->strName.Buffer[UnicodeString.Length / sizeof(WCHAR)] = L'\0';
4281             RtlCopyMemory(Wnd->strName.Buffer,
4282                                  UnicodeString.Buffer,
4283                                  UnicodeString.Length);
4284             Wnd->strName.MaximumLength = UnicodeString.Length + sizeof(UNICODE_NULL);
4285             Wnd->strName.Length = UnicodeString.Length;
4286          }
4287          else
4288          {
4289             EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
4290             Ret = FALSE;
4291             goto Exit;
4292          }
4293       }
4294    }
4295    else
4296    {
4297       Wnd->strName.Length = 0;
4298       if (Wnd->strName.Buffer != NULL)
4299           Wnd->strName.Buffer[0] = L'\0';
4300    }
4301
4302    // HAX! FIXME! Windows does not do this in here!
4303    // In User32, these are called after: NotifyWinEvent EVENT_OBJECT_NAMECHANGE than
4304    // RepaintButton, StaticRepaint, NtUserCallHwndLock HWNDLOCK_ROUTINE_REDRAWFRAMEANDHOOK, etc.
4305    /* Send shell notifications */
4306    if (!Wnd->spwndOwner && !IntGetParent(Wnd))
4307    {
4308       co_IntShellHookNotify(HSHELL_REDRAW, (LPARAM) hWnd);
4309    }
4310
4311    Ret = TRUE;
4312 Exit:
4313    if (UnicodeString.Buffer) RtlFreeUnicodeString(&UnicodeString);
4314    DPRINT("Leave NtUserDefSetText, ret=%i\n", Ret);
4315    UserLeave();
4316    return Ret;
4317 }
4318
4319 /*
4320  * NtUserInternalGetWindowText
4321  *
4322  * Status
4323  *    @implemented
4324  */
4325
4326 INT APIENTRY
4327 NtUserInternalGetWindowText(HWND hWnd, LPWSTR lpString, INT nMaxCount)
4328 {
4329    PWND Wnd;
4330    NTSTATUS Status;
4331    INT Result;
4332    DECLARE_RETURN(INT);
4333
4334    DPRINT("Enter NtUserInternalGetWindowText\n");
4335    UserEnterShared();
4336
4337    if(lpString && (nMaxCount <= 1))
4338    {
4339       EngSetLastError(ERROR_INVALID_PARAMETER);
4340       RETURN( 0);
4341    }
4342
4343    if(!(Wnd = UserGetWindowObject(hWnd)))
4344    {
4345       RETURN( 0);
4346    }
4347
4348    Result = Wnd->strName.Length / sizeof(WCHAR);
4349    if(lpString)
4350    {
4351       const WCHAR Terminator = L'\0';
4352       INT Copy;
4353       WCHAR *Buffer = (WCHAR*)lpString;
4354
4355       Copy = min(nMaxCount - 1, Result);
4356       if(Copy > 0)
4357       {
4358          Status = MmCopyToCaller(Buffer, Wnd->strName.Buffer, Copy * sizeof(WCHAR));
4359          if(!NT_SUCCESS(Status))
4360          {
4361             SetLastNtError(Status);
4362             RETURN( 0);
4363          }
4364          Buffer += Copy;
4365       }
4366
4367       Status = MmCopyToCaller(Buffer, &Terminator, sizeof(WCHAR));
4368       if(!NT_SUCCESS(Status))
4369       {
4370          SetLastNtError(Status);
4371          RETURN( 0);
4372       }
4373
4374       Result = Copy;
4375    }
4376
4377    RETURN( Result);
4378
4379 CLEANUP:
4380    DPRINT("Leave NtUserInternalGetWindowText, ret=%i\n",_ret_);
4381    UserLeave();
4382    END_CLEANUP;
4383 }
4384
4385
4386 BOOL
4387 FASTCALL
4388 IntShowOwnedPopups(PWND OwnerWnd, BOOL fShow )
4389 {
4390    int count = 0;
4391    PWND pWnd;
4392    HWND *win_array;
4393
4394 //   ASSERT(OwnerWnd);
4395
4396    win_array = IntWinListChildren(UserGetWindowObject(IntGetDesktopWindow()));
4397
4398    if (!win_array)
4399       return TRUE;
4400
4401    while (win_array[count])
4402       count++;
4403    while (--count >= 0)
4404    {
4405       if (!(pWnd = UserGetWindowObject( win_array[count] )))
4406          continue;
4407       if (pWnd->spwndOwner != OwnerWnd)
4408          continue;
4409
4410       if (fShow)
4411       {
4412          if (pWnd->state & WNDS_HIDDENPOPUP)
4413          {
4414             /* In Windows, ShowOwnedPopups(TRUE) generates
4415              * WM_SHOWWINDOW messages with SW_PARENTOPENING,
4416              * regardless of the state of the owner
4417              */
4418             co_IntSendMessage(win_array[count], WM_SHOWWINDOW, SW_SHOWNORMAL, SW_PARENTOPENING);
4419             continue;
4420          }
4421       }
4422       else
4423       {
4424          if (pWnd->style & WS_VISIBLE)
4425          {
4426             /* In Windows, ShowOwnedPopups(FALSE) generates
4427              * WM_SHOWWINDOW messages with SW_PARENTCLOSING,
4428              * regardless of the state of the owner
4429              */
4430             co_IntSendMessage(win_array[count], WM_SHOWWINDOW, SW_HIDE, SW_PARENTCLOSING);
4431             continue;
4432          }
4433       }
4434
4435    }
4436    ExFreePool( win_array );
4437    return TRUE;
4438 }
4439
4440 /*
4441  * NtUserValidateHandleSecure
4442  *
4443  * Status
4444  *    @implemented
4445  */
4446
4447 BOOL
4448 APIENTRY
4449 NtUserValidateHandleSecure(
4450    HANDLE handle,
4451    BOOL Restricted)
4452 {
4453    if(!Restricted)
4454    {
4455      UINT uType;
4456      {
4457        PUSER_HANDLE_ENTRY entry;
4458        if (!(entry = handle_to_entry(gHandleTable, handle )))
4459        {
4460           EngSetLastError(ERROR_INVALID_HANDLE);
4461           return FALSE;
4462        }
4463        uType = entry->type;
4464      }
4465      switch (uType)
4466      {
4467        case otWindow:
4468        {
4469          PWND Window;
4470          if ((Window = UserGetWindowObject((HWND) handle))) return TRUE;
4471          return FALSE;
4472        }
4473        case otMenu:
4474        {
4475          PMENU_OBJECT Menu;
4476          if ((Menu = UserGetMenuObject((HMENU) handle))) return TRUE;
4477          return FALSE;
4478        }
4479        case otAccel:
4480        {
4481          PACCELERATOR_TABLE Accel;
4482          if ((Accel = UserGetAccelObject((HACCEL) handle))) return TRUE;
4483          return FALSE;
4484        }
4485        case otCursorIcon:
4486        {
4487          PCURICON_OBJECT Cursor;
4488          if ((Cursor = UserGetCurIconObject((HCURSOR) handle))) return TRUE;
4489          return FALSE;
4490        }
4491        case otHook:
4492        {
4493          PHOOK Hook;
4494          if ((Hook = IntGetHookObject((HHOOK) handle))) return TRUE;
4495          return FALSE;
4496        }
4497        case otMonitor:
4498        {
4499          PMONITOR Monitor;
4500          if ((Monitor = UserGetMonitorObject((HMONITOR) handle))) return TRUE;
4501          return FALSE;
4502        }
4503        case otCallProc:
4504        {
4505          WNDPROC_INFO Proc;
4506          return UserGetCallProcInfo( handle, &Proc );
4507        }
4508        default:
4509          EngSetLastError(ERROR_INVALID_HANDLE);
4510      }
4511    }
4512    else
4513    { /* Is handle entry restricted? */
4514      UNIMPLEMENTED
4515    }
4516    return FALSE;
4517 }
4518
4519
4520 /* EOF */