reactos/lib/user32/windows/window.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS user32.dll
   5  * FILE:            lib/user32/windows/window.c
   6  * PURPOSE:         Window management
   7  * PROGRAMMER:      Casper S. Hornstrup (chorns@users.sourceforge.net)
   8  * UPDATE HISTORY:
   9  *      06-06-2001  CSH  Created
  10  */
  11
  12 /* INCLUDES ******************************************************************/
  13
  14 #include <user32.h>
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 BOOL ControlsInitialized = FALSE;
  19
  20 LRESULT DefWndNCPaint(HWND hWnd, HRGN hRgn, BOOL Active);
  21
  22 /* FUNCTIONS *****************************************************************/
  23
  24
  25 NTSTATUS STDCALL
  26 User32CallSendAsyncProcForKernel(PVOID Arguments, ULONG ArgumentLength)
  27 {
  28   PSENDASYNCPROC_CALLBACK_ARGUMENTS CallbackArgs;
  29
  30   DPRINT("User32CallSendAsyncProcKernel()\n");
  31   CallbackArgs = (PSENDASYNCPROC_CALLBACK_ARGUMENTS)Arguments;
  32   if (ArgumentLength != sizeof(WINDOWPROC_CALLBACK_ARGUMENTS))
  33     {
  34       return(STATUS_INFO_LENGTH_MISMATCH);
  35     }
  36   CallbackArgs->Callback(CallbackArgs->Wnd, CallbackArgs->Msg,
  37                          CallbackArgs->Context, CallbackArgs->Result);
  38   return(STATUS_SUCCESS);
  39 }
  40
  41
  42 /*
  43  * @unimplemented
  44  */
  45 BOOL STDCALL
  46 AllowSetForegroundWindow(DWORD dwProcessId)
  47 {
  48   UNIMPLEMENTED;
  49   return(FALSE);
  50 }
  51
  52
  53 /*
  54  * @unimplemented
  55  */
  56 HDWP STDCALL
  57 BeginDeferWindowPos(int nNumWindows)
  58 {
  59 #if 0
  60   UNIMPLEMENTED;
  61   return (HDWP)0;
  62 #else
  63   return (HDWP)1;
  64 #endif
  65 }
  66
  67
  68 /*
  69  * @implemented
  70  */
  71 BOOL STDCALL
  72 BringWindowToTop(HWND hWnd)
  73 {
  74     return NtUserSetWindowPos( hWnd,
  75                                HWND_TOP,
  76                                0,
  77                                0,
  78                                0,
  79                                0,
  80                                SWP_NOSIZE | SWP_NOMOVE );
  81 }
  82
  83
  84 /*
  85  * @unimplemented
  86  */
  87 /*
  88 WORD STDCALL
  89 CascadeWindows(HWND hwndParent,
  90                UINT wHow,
  91                CONST RECT *lpRect,
  92                UINT cKids,
  93                const HWND *lpKids)
  94 {
  95   UNIMPLEMENTED;
  96   return 0;
  97 }
  98 */
  99
 100 VOID
 101 STDCALL
 102 SwitchToThisWindow ( HWND hwnd, BOOL fUnknown )
 103 {
 104   ShowWindow ( hwnd, SW_SHOW );
 105 }
 106
 107 /*
 108  * @implemented
 109  */
 110 HWND STDCALL
 111 ChildWindowFromPoint(HWND hWndParent,
 112                      POINT Point)
 113 {
 114   return (HWND) NtUserChildWindowFromPointEx(hWndParent, Point.x, Point.y, 0);
 115 }
 116
 117
 118 /*
 119  * @implemented
 120  */
 121 HWND STDCALL
 122 ChildWindowFromPointEx(HWND hwndParent,
 123                        POINT pt,
 124                        UINT uFlags)
 125 {
 126   return (HWND) NtUserChildWindowFromPointEx(hwndParent, pt.x, pt.y, uFlags);
 127 }
 128
 129
 130 /*
 131  * @implemented
 132  */
 133 BOOL STDCALL
 134 CloseWindow(HWND hWnd)
 135 {
 136     SendMessageA(hWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
 137
 138     return (BOOL)(hWnd);
 139 }
 140
 141 /*
 142  * @implemented
 143  */
 144 HWND STDCALL
 145 CreateWindowExA(DWORD dwExStyle,
 146                 LPCSTR lpClassName,
 147                 LPCSTR lpWindowName,
 148                 DWORD dwStyle,
 149                 int x,
 150                 int y,
 151                 int nWidth,
 152                 int nHeight,
 153                 HWND hWndParent,
 154                 HMENU hMenu,
 155                 HINSTANCE hInstance,
 156                 LPVOID lpParam)
 157 {
 158   UNICODE_STRING WindowName;
 159   UNICODE_STRING ClassName;
 160   WNDCLASSEXA wce;
 161   HWND Handle;
 162
 163 #if 0
 164   DbgPrint("[window] CreateWindowExA style %d, exstyle %d, parent %d\n", dwStyle, dwExStyle, hWndParent);
 165 #endif
 166
 167   if (IS_ATOM(lpClassName))
 168     {
 169       RtlInitUnicodeString(&ClassName, NULL);
 170       ClassName.Buffer = (LPWSTR)lpClassName;
 171     }
 172   else
 173     {
 174       if (!RtlCreateUnicodeStringFromAsciiz(&(ClassName), (PCSZ)lpClassName))
 175         {
 176           SetLastError(ERROR_OUTOFMEMORY);
 177           return (HWND)0;
 178         }
 179     }
 180
 181   /* Register built-in controls if not already done */
 182   if (! ControlsInitialized)
 183     {
 184       ControlsInitialized = ControlsInit(ClassName.Buffer);
 185     }
 186
 187   if (dwExStyle & WS_EX_MDICHILD)
 188   {
 189      if (!IS_ATOM(lpClassName))
 190         RtlFreeUnicodeString(&ClassName);
 191      return CreateMDIWindowA(lpClassName, lpWindowName, dwStyle, x, y,
 192         nWidth, nHeight, hWndParent, hInstance, (LPARAM)lpParam);
 193   }
 194
 195   if (!RtlCreateUnicodeStringFromAsciiz(&WindowName, (PCSZ)lpWindowName))
 196     {
 197       if (!IS_ATOM(lpClassName))
 198         {
 199           RtlFreeUnicodeString(&ClassName);
 200         }
 201       SetLastError(ERROR_OUTOFMEMORY);
 202       return (HWND)0;
 203     }
 204
 205   if(!hMenu && (dwStyle & (WS_OVERLAPPEDWINDOW | WS_POPUP)))
 206   {
 207     wce.cbSize = sizeof(WNDCLASSEXA);
 208     if(GetClassInfoExA(hInstance, lpClassName, &wce) && wce.lpszMenuName)
 209     {
 210       hMenu = LoadMenuA(hInstance, wce.lpszMenuName);
 211     }
 212   }
 213
 214   Handle = NtUserCreateWindowEx(dwExStyle,
 215                                 &ClassName,
 216                                 &WindowName,
 217                                 dwStyle,
 218                                 x,
 219                                 y,
 220                                 nWidth,
 221                                 nHeight,
 222                                 hWndParent,
 223                                 hMenu,
 224                                 hInstance,
 225                                 lpParam,
 226                                 SW_SHOW,
 227                                 FALSE);
 228
 229 #if 0
 230   DbgPrint("[window] NtUserCreateWindowEx() == %d\n", Handle);
 231 #endif
 232
 233   RtlFreeUnicodeString(&WindowName);
 234
 235   if (!IS_ATOM(lpClassName))
 236     {
 237       RtlFreeUnicodeString(&ClassName);
 238     }
 239
 240   return Handle;
 241 }
 242
 243
 244 /*
 245  * @implemented
 246  */
 247 HWND STDCALL
 248 CreateWindowExW(DWORD dwExStyle,
 249                 LPCWSTR lpClassName,
 250                 LPCWSTR lpWindowName,
 251                 DWORD dwStyle,
 252                 int x,
 253                 int y,
 254                 int nWidth,
 255                 int nHeight,
 256                 HWND hWndParent,
 257                 HMENU hMenu,
 258                 HINSTANCE hInstance,
 259                 LPVOID lpParam)
 260 {
 261   UNICODE_STRING WindowName;
 262   UNICODE_STRING ClassName;
 263   WNDCLASSEXW wce;
 264   HANDLE Handle;
 265
 266   /* Register built-in controls if not already done */
 267   if (! ControlsInitialized)
 268     {
 269       ControlsInitialized = ControlsInit(lpClassName);
 270     }
 271
 272   if (dwExStyle & WS_EX_MDICHILD)
 273      return CreateMDIWindowW(lpClassName, lpWindowName, dwStyle, x, y,
 274         nWidth, nHeight, hWndParent, hInstance, (LPARAM)lpParam);
 275
 276   if (IS_ATOM(lpClassName))
 277     {
 278       RtlInitUnicodeString(&ClassName, NULL);
 279       ClassName.Buffer = (LPWSTR)lpClassName;
 280     }
 281   else
 282     {
 283       RtlInitUnicodeString(&ClassName, lpClassName);
 284     }
 285
 286   RtlInitUnicodeString(&WindowName, lpWindowName);
 287
 288   if(!hMenu && (dwStyle & (WS_OVERLAPPEDWINDOW | WS_POPUP)))
 289   {
 290     wce.cbSize = sizeof(WNDCLASSEXW);
 291     if(GetClassInfoExW(hInstance, lpClassName, &wce) && wce.lpszMenuName)
 292     {
 293       hMenu = LoadMenuW(hInstance, wce.lpszMenuName);
 294     }
 295   }
 296
 297   Handle = NtUserCreateWindowEx(dwExStyle,
 298                                 &ClassName,
 299                                 &WindowName,
 300                                 dwStyle,
 301                                 x,
 302                                 y,
 303                                 nWidth,
 304                                 nHeight,
 305                                 hWndParent,
 306                                 hMenu,
 307                                 hInstance,
 308                                 lpParam,
 309                                 SW_SHOW,
 310                                 TRUE);
 311
 312   return (HWND)Handle;
 313 }
 314
 315
 316 /*
 317  * @unimplemented
 318  */
 319 HDWP STDCALL
 320 DeferWindowPos(HDWP hWinPosInfo,
 321                HWND hWnd,
 322                HWND hWndInsertAfter,
 323                int x,
 324                int y,
 325                int cx,
 326                int cy,
 327                UINT uFlags)
 328 {
 329 #if 0
 330   return NtUserDeferWindowPos(hWinPosInfo, hWnd, hWndInsertAfter, x, y, cx, cy, uFlags);
 331 #else
 332   SetWindowPos(hWnd, hWndInsertAfter, x, y, cx, cy, uFlags);
 333   return hWinPosInfo;
 334 #endif
 335 }
 336
 337
 338 /*
 339  * @implemented
 340  */
 341 BOOL STDCALL
 342 DestroyWindow(HWND hWnd)
 343 {
 344   return NtUserDestroyWindow(hWnd);
 345 }
 346
 347
 348 /*
 349  * @unimplemented
 350  */
 351 BOOL STDCALL
 352 EndDeferWindowPos(HDWP hWinPosInfo)
 353 {
 354 #if 0
 355   UNIMPLEMENTED;
 356   return FALSE;
 357 #else
 358   return TRUE;
 359 #endif
 360 }
 361
 362
 363 /*
 364  * @implemented
 365  */
 366 HWND STDCALL
 367 GetDesktopWindow(VOID)
 368 {
 369         return NtUserGetDesktopWindow();
 370 }
 371
 372
 373 /*
 374  * @unimplemented
 375  */
 376 HWND STDCALL
 377 GetForegroundWindow(VOID)
 378 {
 379    return NtUserGetForegroundWindow();
 380 }
 381
 382
 383 BOOL
 384 STATIC
 385 User32EnumWindows (
 386         HDESK hDesktop,
 387         HWND hWndparent,
 388         WNDENUMPROC lpfn,
 389         LPARAM lParam,
 390         DWORD dwThreadId,
 391         BOOL bChildren )
 392 {
 393   DWORD i, dwCount = 0;
 394   HWND* pHwnd = NULL;
 395   HANDLE hHeap;
 396
 397   if ( !lpfn )
 398     {
 399       SetLastError ( ERROR_INVALID_PARAMETER );
 400       return FALSE;
 401     }
 402
 403   /* FIXME instead of always making two calls, should we use some
 404      sort of persistent buffer and only grow it ( requiring a 2nd
 405      call ) when the buffer wasn't already big enough? */
 406   /* first get how many window entries there are */
 407   SetLastError(0);
 408   dwCount = NtUserBuildHwndList (
 409     hDesktop, hWndparent, bChildren, dwThreadId, lParam, NULL, 0 );
 410   if ( !dwCount || GetLastError() )
 411     return FALSE;
 412
 413   /* allocate buffer to receive HWND handles */
 414   hHeap = GetProcessHeap();
 415   pHwnd = HeapAlloc ( hHeap, 0, sizeof(HWND)*(dwCount+1) );
 416   if ( !pHwnd )
 417     {
 418       SetLastError ( ERROR_NOT_ENOUGH_MEMORY );
 419       return FALSE;
 420     }
 421
 422   /* now call kernel again to fill the buffer this time */
 423   dwCount = NtUserBuildHwndList (
 424     hDesktop, hWndparent, bChildren, dwThreadId, lParam, pHwnd, dwCount );
 425   if ( !dwCount || GetLastError() )
 426     {
 427       if ( pHwnd )
 428         HeapFree ( hHeap, 0, pHwnd );
 429       return FALSE;
 430     }
 431
 432   /* call the user's callback function until we're done or
 433      they tell us to quit */
 434   for ( i = 0; i < dwCount; i++ )
 435   {
 436     /* FIXME I'm only getting NULLs from Thread Enumeration, and it's
 437      * probably because I'm not doing it right in NtUserBuildHwndList.
 438      * Once that's fixed, we shouldn't have to check for a NULL HWND
 439      * here
 440      */
 441     if ( !(ULONG)pHwnd[i] ) /* don't enumerate a NULL HWND */
 442       continue;
 443     if ( !(*lpfn)( pHwnd[i], lParam ) )
 444     {
 445       HeapFree ( hHeap, 0, pHwnd );
 446       return FALSE;
 447     }
 448   }
 449   if ( pHwnd )
 450     HeapFree ( hHeap, 0, pHwnd );
 451   return TRUE;
 452 }
 453
 454
 455 /*
 456  * @implemented
 457  */
 458 BOOL
 459 STDCALL
 460 EnumChildWindows(
 461         HWND hWndParent,
 462         WNDENUMPROC lpEnumFunc,
 463         LPARAM lParam)
 464 {
 465   if ( !hWndParent )
 466     hWndParent = GetDesktopWindow();
 467   return User32EnumWindows ( NULL, hWndParent, lpEnumFunc, lParam, 0, FALSE );
 468 }
 469
 470
 471 /*
 472  * @implemented
 473  */
 474 BOOL
 475 STDCALL
 476 EnumThreadWindows(DWORD dwThreadId,
 477                   WNDENUMPROC lpfn,
 478                   LPARAM lParam)
 479 {
 480   if ( !dwThreadId )
 481     dwThreadId = GetCurrentThreadId();
 482   return User32EnumWindows ( NULL, NULL, lpfn, lParam, dwThreadId, FALSE );
 483 }
 484
 485
 486 /*
 487  * @implemented
 488  */
 489 BOOL STDCALL
 490 EnumWindows(WNDENUMPROC lpEnumFunc,
 491             LPARAM lParam)
 492 {
 493   return User32EnumWindows ( NULL, NULL, lpEnumFunc, lParam, 0, FALSE );
 494 }
 495
 496
 497 /*
 498  * @implemented
 499  */
 500 BOOL
 501 STDCALL
 502 EnumDesktopWindows(
 503         HDESK hDesktop,
 504         WNDENUMPROC lpfn,
 505         LPARAM lParam)
 506 {
 507   return User32EnumWindows ( hDesktop, NULL, lpfn, lParam, 0, FALSE );
 508 }
 509
 510
 511 /*
 512  * @implemented
 513  */
 514 HWND STDCALL
 515 FindWindowExA(HWND hwndParent,
 516               HWND hwndChildAfter,
 517               LPCSTR lpszClass,
 518               LPCSTR lpszWindow)
 519 {
 520    UNICODE_STRING ucClassName;
 521    UNICODE_STRING ucWindowName;
 522    HWND Result;
 523
 524    if (lpszClass == NULL)
 525    {
 526       ucClassName.Buffer = NULL;
 527       ucClassName.Length = 0;
 528    }
 529    else if (IS_ATOM(lpszClass))
 530    {
 531       ucClassName.Buffer = (LPWSTR)lpszClass;
 532       ucClassName.Length = 0;
 533    }
 534    else
 535    {
 536       RtlCreateUnicodeStringFromAsciiz(&ucClassName, (LPSTR)lpszClass);
 537    }
 538
 539    RtlCreateUnicodeStringFromAsciiz(&ucWindowName, (LPSTR)lpszWindow);
 540
 541    Result = NtUserFindWindowEx(hwndParent, hwndChildAfter, &ucClassName,
 542       &ucWindowName);
 543
 544    if (!IS_ATOM(lpszClass))
 545       RtlFreeUnicodeString(&ucClassName);
 546    RtlFreeUnicodeString(&ucWindowName);
 547
 548    return Result;
 549 }
 550
 551
 552 /*
 553  * @implemented
 554  */
 555 HWND STDCALL
 556 FindWindowExW(HWND hwndParent,
 557               HWND hwndChildAfter,
 558               LPCWSTR lpszClass,
 559               LPCWSTR lpszWindow)
 560 {
 561    UNICODE_STRING ucClassName;
 562    UNICODE_STRING ucWindowName;
 563
 564    if (lpszClass == NULL)
 565    {
 566       ucClassName.Buffer = NULL;
 567       ucClassName.Length = 0;
 568    }
 569    else if (IS_ATOM(lpszClass))
 570    {
 571       RtlInitUnicodeString(&ucClassName, NULL);
 572       ucClassName.Buffer = (LPWSTR)lpszClass;
 573    }
 574    else
 575    {
 576       RtlInitUnicodeString(&ucClassName, lpszClass);
 577    }
 578
 579    RtlInitUnicodeString(&ucWindowName, lpszWindow);
 580
 581    return NtUserFindWindowEx(hwndParent, hwndChildAfter, &ucClassName, &ucWindowName);
 582 }
 583
 584
 585 /*
 586  * @implemented
 587  */
 588 HWND STDCALL
 589 FindWindowA(LPCSTR lpClassName, LPCSTR lpWindowName)
 590 {
 591   //FIXME: FindWindow does not search children, but FindWindowEx does.
 592   //       what should we do about this?
 593   return FindWindowExA (NULL, NULL, lpClassName, lpWindowName);
 594 }
 595
 596
 597 /*
 598  * @implemented
 599  */
 600 HWND STDCALL
 601 FindWindowW(LPCWSTR lpClassName, LPCWSTR lpWindowName)
 602 {
 603   /*
 604
 605   There was a FIXME here earlier, but I think it is just a documentation unclarity.
 606
 607   FindWindow only searches top level windows. What they mean is that child
 608   windows of other windows than the desktop can be searched.
 609   FindWindowExW never does a recursive search.
 610
 611         / Joakim
 612   */
 613
 614   return FindWindowExW (NULL, NULL, lpClassName, lpWindowName);
 615 }
 616
 617
 618
 619 /*
 620  * @unimplemented
 621  */
 622 BOOL STDCALL
 623 GetAltTabInfoA(HWND hwnd,
 624                int iItem,
 625                PALTTABINFO pati,
 626                LPSTR pszItemText,
 627                UINT cchItemText)
 628 {
 629   UNIMPLEMENTED;
 630   return FALSE;
 631 }
 632
 633
 634 /*
 635  * @unimplemented
 636  */
 637 BOOL STDCALL
 638 GetAltTabInfoW(HWND hwnd,
 639                int iItem,
 640                PALTTABINFO pati,
 641                LPWSTR pszItemText,
 642                UINT cchItemText)
 643 {
 644   UNIMPLEMENTED;
 645   return FALSE;
 646 }
 647
 648
 649 /*
 650  * @implemented
 651  */
 652 HWND STDCALL
 653 GetAncestor(HWND hwnd, UINT gaFlags)
 654 {
 655   return(NtUserGetAncestor(hwnd, gaFlags));
 656 }
 657
 658
 659 /*
 660  * @implemented
 661  */
 662 BOOL STDCALL
 663 GetClientRect(HWND hWnd, LPRECT lpRect)
 664 {
 665   return(NtUserGetClientRect(hWnd, lpRect));
 666 }
 667
 668
 669 /*
 670  * @implemented
 671  */
 672 BOOL STDCALL
 673 GetGUIThreadInfo(DWORD idThread,
 674                  LPGUITHREADINFO lpgui)
 675 {
 676   return (BOOL)NtUserGetGUIThreadInfo(idThread, lpgui);
 677 }
 678
 679
 680 /*
 681  * @unimplemented
 682  */
 683 HWND STDCALL
 684 GetLastActivePopup(HWND hWnd)
 685 {
 686   return NtUserGetLastActivePopup(hWnd);
 687 }
 688
 689
 690 /*
 691  * @implemented
 692  */
 693 HWND STDCALL
 694 GetParent(HWND hWnd)
 695 {
 696   return NtUserGetParent(hWnd);
 697 }
 698
 699
 700 /*
 701  * @unimplemented
 702  */
 703 BOOL STDCALL
 704 GetProcessDefaultLayout(DWORD *pdwDefaultLayout)
 705 {
 706   UNIMPLEMENTED;
 707   return FALSE;
 708 }
 709
 710
 711 /*
 712  * @unimplemented
 713  */
 714 BOOL STDCALL
 715 GetTitleBarInfo(HWND hwnd,
 716                 PTITLEBARINFO pti)
 717 {
 718   UNIMPLEMENTED;
 719   return FALSE;
 720 }
 721
 722
 723 /*
 724  * @implemented
 725  */
 726 HWND STDCALL
 727 GetWindow(HWND hWnd,
 728           UINT uCmd)
 729 {
 730   return NtUserGetWindow(hWnd, uCmd);
 731 }
 732
 733
 734 /*
 735  * @implemented
 736  */
 737 HWND STDCALL
 738 GetTopWindow(HWND hWnd)
 739 {
 740   if (!hWnd) hWnd = GetDesktopWindow();
 741   return GetWindow( hWnd, GW_CHILD );
 742 }
 743
 744
 745 /*
 746  * @implemented
 747  */
 748 BOOL STDCALL
 749 GetWindowInfo(HWND hwnd,
 750               PWINDOWINFO pwi)
 751 {
 752   return NtUserGetWindowInfo(hwnd, pwi);
 753 }
 754
 755
 756 /*
 757  * @implemented
 758  */
 759 UINT STDCALL
 760 GetWindowModuleFileNameA(HWND hwnd,
 761                          LPSTR lpszFileName,
 762                          UINT cchFileNameMax)
 763 {
 764   HINSTANCE hWndInst;
 765
 766   if(!(hWndInst = NtUserGetWindowInstance(hwnd)))
 767   {
 768     return 0;
 769   }
 770
 771   return GetModuleFileNameA(hWndInst, lpszFileName, cchFileNameMax);
 772 }
 773
 774
 775 /*
 776  * @implemented
 777  */
 778 UINT STDCALL
 779 GetWindowModuleFileNameW(HWND hwnd,
 780                          LPWSTR lpszFileName,
 781                          UINT cchFileNameMax)
 782 {
 783   HINSTANCE hWndInst;
 784
 785   if(!(hWndInst = NtUserGetWindowInstance(hwnd)))
 786   {
 787     return 0;
 788   }
 789
 790   return GetModuleFileNameW(hWndInst, lpszFileName, cchFileNameMax);
 791 }
 792
 793
 794 /*
 795  * @implemented
 796  */
 797 BOOL STDCALL
 798 GetWindowPlacement(HWND hWnd,
 799                    WINDOWPLACEMENT *lpwndpl)
 800 {
 801   return (BOOL)NtUserGetWindowPlacement(hWnd, lpwndpl);
 802 }
 803
 804
 805 /*
 806  * @implemented
 807  */
 808 BOOL STDCALL
 809 GetWindowRect(HWND hWnd,
 810               LPRECT lpRect)
 811 {
 812   return(NtUserGetWindowRect(hWnd, lpRect));
 813 }
 814
 815
 816 /*
 817  * @implemented
 818  */
 819 int STDCALL
 820 GetWindowTextA(HWND hWnd, LPSTR lpString, int nMaxCount)
 821 {
 822   DWORD ProcessId;
 823   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
 824   {
 825     return 0;
 826   }
 827
 828   if(ProcessId != GetCurrentProcessId())
 829   {
 830     /* do not send WM_GETTEXT messages to other processes */
 831     LPWSTR Buffer;
 832     INT Length;
 833
 834     if (nMaxCount > 1)
 835     {
 836       *((PWSTR)lpString) = '\0';
 837     }
 838     Buffer = HeapAlloc(GetProcessHeap(), 0, nMaxCount * sizeof(WCHAR));
 839     if (!Buffer)
 840       return FALSE;
 841     Length = NtUserInternalGetWindowText(hWnd, Buffer, nMaxCount);
 842     if (Length > 0 && nMaxCount > 0 &&
 843         !WideCharToMultiByte(CP_ACP, 0, Buffer, -1,
 844         lpString, nMaxCount, NULL, NULL))
 845     {
 846       lpString[0] = '\0';
 847     }
 848
 849     HeapFree(GetProcessHeap(), 0, Buffer);
 850
 851     return (LRESULT)Length;
 852   }
 853
 854   return(SendMessageA(hWnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString));
 855 }
 856
 857
 858 /*
 859  * @implemented
 860  */
 861 int STDCALL
 862 GetWindowTextLengthA(HWND hWnd)
 863 {
 864   DWORD ProcessId;
 865   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
 866   {
 867     return 0;
 868   }
 869
 870   if(ProcessId == GetCurrentProcessId())
 871   {
 872     return(SendMessageA(hWnd, WM_GETTEXTLENGTH, 0, 0));
 873   }
 874
 875   /* do not send WM_GETTEXT messages to other processes */
 876   return (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
 877 }
 878
 879
 880 /*
 881  * @implemented
 882  */
 883 int STDCALL
 884 GetWindowTextLengthW(HWND hWnd)
 885 {
 886   DWORD ProcessId;
 887   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
 888   {
 889     return 0;
 890   }
 891
 892   if(ProcessId == GetCurrentProcessId())
 893   {
 894     return(SendMessageW(hWnd, WM_GETTEXTLENGTH, 0, 0));
 895   }
 896
 897   /* do not send WM_GETTEXT messages to other processes */
 898   return (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
 899 }
 900
 901
 902 /*
 903  * @implemented
 904  */
 905 int STDCALL
 906 GetWindowTextW(
 907         HWND hWnd,
 908         LPWSTR lpString,
 909         int nMaxCount)
 910 {
 911   DWORD ProcessId;
 912   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
 913   {
 914     return 0;
 915   }
 916
 917   if(ProcessId == GetCurrentProcessId())
 918   {
 919     return(SendMessageW(hWnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString));
 920   }
 921
 922   /* do not send WM_GETTEXT messages to other processes */
 923   if (nMaxCount > 1)
 924   {
 925     *((PWSTR)lpString) = L'\0';
 926   }
 927
 928   return (LRESULT)NtUserInternalGetWindowText(hWnd, (PWSTR)lpString, nMaxCount);
 929 }
 930
 931 DWORD STDCALL
 932 GetWindowThreadProcessId(HWND hWnd,
 933                          LPDWORD lpdwProcessId)
 934 {
 935    return NtUserGetWindowThreadProcessId(hWnd, lpdwProcessId);
 936 }
 937
 938
 939 /*
 940  * @implemented
 941  */
 942 BOOL STDCALL
 943 IsChild(HWND hWndParent,
 944         HWND hWnd)
 945 {
 946    if (! IsWindow(hWndParent) || ! IsWindow(hWnd))
 947    {
 948        return FALSE;
 949    }
 950
 951    do
 952    {
 953       hWnd = (HWND)NtUserGetWindowLong(hWnd, GWL_HWNDPARENT, FALSE);
 954    }
 955    while (hWnd != NULL && hWnd != hWndParent);
 956
 957    return hWnd == hWndParent;
 958 }
 959
 960
 961 /*
 962  * @implemented
 963  */
 964 BOOL STDCALL
 965 IsIconic(HWND hWnd)
 966 {
 967   return (NtUserGetWindowLong( hWnd, GWL_STYLE, FALSE) & WS_MINIMIZE) != 0;
 968 }
 969
 970
 971 /*
 972  * @implemented
 973  */
 974 BOOL STDCALL
 975 IsWindow(HWND hWnd)
 976 {
 977   DWORD WndProc = NtUserGetWindowLong(hWnd, GWL_WNDPROC, FALSE);
 978   return (0 != WndProc || ERROR_INVALID_WINDOW_HANDLE != GetLastError());
 979 }
 980
 981
 982 /*
 983  * @implemented
 984  */
 985 BOOL STDCALL
 986 IsWindowUnicode(HWND hWnd)
 987 {
 988         return NtUserIsWindowUnicode(hWnd);
 989 }
 990
 991
 992 /*
 993  * @implemented
 994  */
 995 BOOL STDCALL
 996 IsWindowVisible(HWND hWnd)
 997 {
 998   while (NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_CHILD)
 999     {
1000       if (!(NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_VISIBLE))
1001         {
1002           return(FALSE);
1003         }
1004       hWnd = GetAncestor(hWnd, GA_PARENT);
1005     }
1006   return(NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_VISIBLE);
1007 }
1008
1009
1010 /*
1011  * @implemented
1012  */
1013 BOOL
1014 STDCALL
1015 IsWindowEnabled(
1016   HWND hWnd)
1017 {
1018     // AG: I don't know if child windows are affected if the parent is
1019     // disabled. I think they stop processing messages but stay appearing
1020     // as enabled.
1021
1022     return (! (NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_DISABLED));
1023 }
1024
1025
1026 /*
1027  * @implemented
1028  */
1029 BOOL STDCALL
1030 IsZoomed(HWND hWnd)
1031 {
1032   return NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_MAXIMIZE;
1033 }
1034
1035
1036 /*
1037  * @unimplemented
1038  */
1039 BOOL STDCALL
1040 LockSetForegroundWindow(UINT uLockCode)
1041 {
1042   UNIMPLEMENTED;
1043   return FALSE;
1044 }
1045
1046
1047 /*
1048  * @implemented
1049  */
1050 BOOL STDCALL
1051 MoveWindow(HWND hWnd,
1052            int X,
1053            int Y,
1054            int nWidth,
1055            int nHeight,
1056            BOOL bRepaint)
1057 {
1058   return NtUserMoveWindow(hWnd, X, Y, nWidth, nHeight, bRepaint);
1059 }
1060
1061
1062 /*
1063  * @implemented
1064  */
1065 BOOL STDCALL
1066 AnimateWindow(HWND hwnd,
1067               DWORD dwTime,
1068               DWORD dwFlags)
1069 {
1070   /* FIXME Add animation code */
1071
1072   /* If trying to show/hide and it's already   *
1073    * shown/hidden or invalid window, fail with *
1074    * invalid parameter                         */
1075
1076   BOOL visible;
1077   visible = IsWindowVisible(hwnd);
1078   if(!IsWindow(hwnd) ||
1079     (visible && !(dwFlags & AW_HIDE)) ||
1080     (!visible && (dwFlags & AW_HIDE)))
1081   {
1082     SetLastError(ERROR_INVALID_PARAMETER);
1083     return FALSE;
1084   }
1085
1086   ShowWindow(hwnd, (dwFlags & AW_HIDE) ? SW_HIDE : ((dwFlags & AW_ACTIVATE) ? SW_SHOW : SW_SHOWNA));
1087
1088   return TRUE;
1089 }
1090
1091
1092 /*
1093  * @implemented
1094  */
1095 BOOL STDCALL
1096 OpenIcon(HWND hWnd)
1097 {
1098     if (!(NtUserGetWindowLong(hWnd, GWL_STYLE, FALSE) & WS_MINIMIZE))
1099     {
1100         return FALSE;
1101     }
1102
1103     ShowWindow(hWnd,SW_RESTORE);
1104     return TRUE;
1105 }
1106
1107
1108 /*
1109  * @unimplemented
1110  */
1111 HWND STDCALL
1112 RealChildWindowFromPoint(HWND hwndParent,
1113                          POINT ptParentClientCoords)
1114 {
1115   UNIMPLEMENTED;
1116   return (HWND)0;
1117 }
1118
1119 /*
1120  * @unimplemented
1121  */
1122 BOOL STDCALL
1123 SetForegroundWindow(HWND hWnd)
1124 {
1125    return NtUserCallHwndLock(hWnd, HWNDLOCK_ROUTINE_SETFOREGROUNDWINDOW);
1126 }
1127
1128
1129 /*
1130  * @unimplemented
1131  */
1132 BOOL STDCALL
1133 SetLayeredWindowAttributes(HWND hwnd,
1134                            COLORREF crKey,
1135                            BYTE bAlpha,
1136                            DWORD dwFlags)
1137 {
1138   UNIMPLEMENTED;
1139   return FALSE;
1140 }
1141
1142
1143 /*
1144  * @unimplemented
1145  */
1146 HWND STDCALL
1147 SetParent(HWND hWndChild,
1148           HWND hWndNewParent)
1149 {
1150   return NtUserSetParent(hWndChild, hWndNewParent);
1151 }
1152
1153
1154 /*
1155  * @unimplemented
1156  */
1157 BOOL STDCALL
1158 SetProcessDefaultLayout(DWORD dwDefaultLayout)
1159 {
1160   UNIMPLEMENTED;
1161   return FALSE;
1162 }
1163
1164
1165 /*
1166  * @unimplemented
1167  */
1168 BOOL STDCALL
1169 SetWindowPlacement(HWND hWnd,
1170                    CONST WINDOWPLACEMENT *lpwndpl)
1171 {
1172   return (BOOL)NtUserSetWindowPlacement(hWnd, (WINDOWPLACEMENT *)lpwndpl);
1173 }
1174
1175
1176 /*
1177  * @implemented
1178  */
1179 BOOL STDCALL
1180 SetWindowPos(HWND hWnd,
1181              HWND hWndInsertAfter,
1182              int X,
1183              int Y,
1184              int cx,
1185              int cy,
1186              UINT uFlags)
1187 {
1188   return NtUserSetWindowPos(hWnd,hWndInsertAfter, X, Y, cx, cy, uFlags);
1189 }
1190
1191
1192 /*
1193  * @implemented
1194  */
1195 BOOL STDCALL
1196 SetWindowTextA(HWND hWnd,
1197                LPCSTR lpString)
1198 {
1199   DWORD ProcessId;
1200   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
1201   {
1202     return FALSE;
1203   }
1204
1205   if(ProcessId != GetCurrentProcessId())
1206   {
1207     /* do not send WM_GETTEXT messages to other processes */
1208     ANSI_STRING AnsiString;
1209     UNICODE_STRING UnicodeString;
1210
1211     if(lpString)
1212     {
1213       RtlInitAnsiString(&AnsiString, (LPSTR)lpString);
1214       RtlAnsiStringToUnicodeString(&UnicodeString, &AnsiString, TRUE);
1215       NtUserDefSetText(hWnd, &UnicodeString);
1216       RtlFreeUnicodeString(&UnicodeString);
1217     }
1218     else
1219       NtUserDefSetText(hWnd, NULL);
1220
1221     if ((GetWindowLongW(hWnd, GWL_STYLE) & WS_CAPTION) == WS_CAPTION)
1222     {
1223       DefWndNCPaint(hWnd, (HRGN)1, -1);
1224     }
1225     return TRUE;
1226   }
1227
1228   return SendMessageA(hWnd, WM_SETTEXT, 0, (LPARAM)lpString);
1229 }
1230
1231
1232 /*
1233  * @implemented
1234  */
1235 BOOL STDCALL
1236 SetWindowTextW(HWND hWnd,
1237                LPCWSTR lpString)
1238 {
1239   DWORD ProcessId;
1240   if(!NtUserGetWindowThreadProcessId(hWnd, &ProcessId))
1241   {
1242     return FALSE;
1243   }
1244
1245   if(ProcessId != GetCurrentProcessId())
1246   {
1247     /* do not send WM_GETTEXT messages to other processes */
1248     UNICODE_STRING UnicodeString;
1249
1250     if(lpString)
1251       RtlInitUnicodeString(&UnicodeString, (LPWSTR)lpString);
1252
1253     NtUserDefSetText(hWnd, (lpString ? &UnicodeString : NULL));
1254
1255     if ((GetWindowLongW(hWnd, GWL_STYLE) & WS_CAPTION) == WS_CAPTION)
1256     {
1257       DefWndNCPaint(hWnd, (HRGN)1, -1);
1258     }
1259     return TRUE;
1260   }
1261
1262   return SendMessageW(hWnd, WM_SETTEXT, 0, (LPARAM)lpString);
1263 }
1264
1265
1266 /*
1267  * @implemented
1268  */
1269 BOOL STDCALL
1270 ShowOwnedPopups(HWND hWnd,
1271                 BOOL fShow)
1272 {
1273   return (BOOL)NtUserCallTwoParam((DWORD)hWnd, fShow, TWOPARAM_ROUTINE_SHOWOWNEDPOPUPS);
1274 }
1275
1276
1277 /*
1278  * @implemented
1279  */
1280 BOOL STDCALL
1281 ShowWindow(HWND hWnd,
1282            int nCmdShow)
1283 {
1284   return NtUserShowWindow(hWnd, nCmdShow);
1285 }
1286
1287
1288 /*
1289  * @unimplemented
1290  */
1291 BOOL STDCALL
1292 ShowWindowAsync(HWND hWnd,
1293                 int nCmdShow)
1294 {
1295   UNIMPLEMENTED;
1296   return FALSE;
1297 }
1298
1299
1300 /*
1301  * @unimplemented
1302  */
1303 /*
1304 WORD STDCALL
1305 TileWindows(HWND hwndParent,
1306             UINT wHow,
1307             CONST RECT *lpRect,
1308             UINT cKids,
1309             const HWND *lpKids)
1310 {
1311   UNIMPLEMENTED;
1312   return 0;
1313 }
1314 */
1315
1316
1317 /*
1318  * @unimplemented
1319  */
1320 BOOL STDCALL
1321 UpdateLayeredWindow(HWND hwnd,
1322                     HDC hdcDst,
1323                     POINT *pptDst,
1324                     SIZE *psize,
1325                     HDC hdcSrc,
1326                     POINT *pptSrc,
1327                     COLORREF crKey,
1328                     BLENDFUNCTION *pblend,
1329                     DWORD dwFlags)
1330 {
1331   UNIMPLEMENTED;
1332   return FALSE;
1333 }
1334
1335
1336 /*
1337  * @implemented
1338  */
1339 HWND STDCALL
1340 WindowFromPoint(POINT Point)
1341 {
1342   //TODO: Determine what the actual parameters to
1343   // NtUserWindowFromPoint are.
1344   return NtUserWindowFromPoint(Point.x, Point.y);
1345 }
1346
1347
1348 /*
1349  * @implemented
1350  */
1351 int STDCALL
1352 MapWindowPoints(HWND hWndFrom, HWND hWndTo, LPPOINT lpPoints, UINT cPoints)
1353 {
1354   POINT FromOffset, ToOffset;
1355   LONG XMove, YMove;
1356   ULONG i;
1357
1358   if (hWndFrom == NULL)
1359   {
1360     FromOffset.x = FromOffset.y = 0;
1361   } else
1362   if(!NtUserGetClientOrigin(hWndFrom, &FromOffset))
1363   {
1364     return 0;
1365   }
1366
1367   if (hWndTo == NULL)
1368   {
1369     ToOffset.x = ToOffset.y = 0;
1370   } else
1371   if(!NtUserGetClientOrigin(hWndTo, &ToOffset))
1372   {
1373     return 0;
1374   }
1375   XMove = FromOffset.x - ToOffset.x;
1376   YMove = FromOffset.y - ToOffset.y;
1377
1378   for (i = 0; i < cPoints; i++)
1379     {
1380       lpPoints[i].x += XMove;
1381       lpPoints[i].y += YMove;
1382     }
1383   return(MAKELONG(LOWORD(XMove), LOWORD(YMove)));
1384 }
1385
1386
1387 /*
1388  * @implemented
1389  */
1390 BOOL STDCALL
1391 ScreenToClient(HWND hWnd, LPPOINT lpPoint)
1392 {
1393   return(MapWindowPoints(NULL, hWnd, lpPoint, 1) != 0);
1394 }
1395
1396
1397 /*
1398  * @implemented
1399  */
1400 BOOL STDCALL
1401 ClientToScreen(HWND hWnd, LPPOINT lpPoint)
1402 {
1403     return (MapWindowPoints( hWnd, NULL, lpPoint, 1 ) != 0);
1404 }
1405
1406
1407 /*
1408  * @implemented
1409  */
1410 BOOL
1411 STDCALL
1412 SetWindowContextHelpId(HWND hwnd,
1413           DWORD dwContextHelpId)
1414 {
1415   return NtUserSetWindowContextHelpId(hwnd, dwContextHelpId);
1416 }
1417
1418
1419 /*
1420  * @implemented
1421  */
1422 DWORD
1423 STDCALL
1424 GetWindowContextHelpId(HWND hwnd)
1425 {
1426   return NtUserGetWindowContextHelpId(hwnd);
1427 }
1428
1429 /*
1430  * @implemented
1431  */
1432 int
1433 STDCALL
1434 InternalGetWindowText(HWND hWnd, LPWSTR lpString, int nMaxCount)
1435 {
1436   return NtUserInternalGetWindowText(hWnd, lpString, nMaxCount);
1437 }
1438
1439 /*
1440  * @implemented
1441  */
1442 BOOL
1443 STDCALL
1444 IsHungAppWindow(HWND hwnd)
1445 {
1446   return (NtUserQueryWindow(hwnd, QUERY_WINDOW_ISHUNG) != 0);
1447 }
1448
1449 /*
1450  * @implemented
1451  */
1452 VOID
1453 STDCALL
1454 SetLastErrorEx(DWORD dwErrCode, DWORD dwType)
1455 {
1456   SetLastError(dwErrCode);
1457 }
1458
1459 /*
1460  * @implemented
1461  */
1462 HWND
1463 STDCALL
1464 GetFocus(VOID)
1465 {
1466   return (HWND)NtUserGetThreadState(0);
1467 }
1468
1469 /*
1470  * @unimplemented
1471  */
1472 HWND
1473 STDCALL
1474 SetTaskmanWindow(HWND x)
1475 {
1476   UNIMPLEMENTED;
1477   return FALSE;
1478 }
1479
1480 /*
1481  * @unimplemented
1482  */
1483 HWND
1484 STDCALL
1485 SetProgmanWindow(HWND x)
1486 {
1487   UNIMPLEMENTED;
1488   return FALSE;
1489 }
1490
1491 /*
1492  * @unimplemented
1493  */
1494 HWND
1495 STDCALL
1496 GetProgmanWindow(VOID)
1497 {
1498   UNIMPLEMENTED;
1499   return FALSE;
1500 }
1501
1502 /*
1503  * @unimplemented
1504  */
1505 HWND
1506 STDCALL
1507 GetTaskmanWindow(VOID)
1508 {
1509   UNIMPLEMENTED;
1510   return FALSE;
1511 }
1512
1513 /*
1514  * @implemented
1515  */
1516 BOOL STDCALL
1517 ScrollWindow(HWND hWnd, int dx, int dy, CONST RECT *lpRect,
1518    CONST RECT *prcClip)
1519 {
1520    return NtUserScrollWindowEx(hWnd, dx, dy, lpRect, prcClip, 0, NULL,
1521       (lpRect ? 0 : SW_SCROLLCHILDREN) | SW_INVALIDATE) != ERROR;
1522 }
1523
1524
1525 /*
1526  * @implemented
1527  */
1528 INT STDCALL
1529 ScrollWindowEx(HWND hWnd, int dx, int dy, CONST RECT *prcScroll,
1530    CONST RECT *prcClip, HRGN hrgnUpdate, LPRECT prcUpdate, UINT flags)
1531 {
1532    return NtUserScrollWindowEx(hWnd, dx, dy, prcScroll, prcClip, hrgnUpdate,
1533       prcUpdate, flags);
1534 }
1535
1536 /*
1537  * @implemented
1538  */
1539 BOOL
1540 STDCALL
1541 AnyPopup(VOID)
1542 {
1543   return NtUserAnyPopup();
1544 }
1545
1546 /*
1547  * @implemented
1548  */
1549 BOOL
1550 STDCALL
1551 IsWindowInDestroy(HWND hWnd)
1552 {
1553   return NtUserIsWindowInDestroy(hWnd);
1554 }
1555
1556 /*
1557  * @implemented
1558  */
1559 VOID
1560 STDCALL
1561 DisableProcessWindowsGhosting(VOID)
1562 {
1563   NtUserEnableProcessWindowGhosting(FALSE);
1564 }
1565
1566 /* EOF */
1567