reactos/subsystems/win32/win32k/ntuser/message.c

   1 /*
   2  *  ReactOS W32 Subsystem
   3  *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * PURPOSE:          Messages
  23  * FILE:             subsys/win32k/ntuser/message.c
  24  * PROGRAMER:        Casper S. Hornstrup (chorns@users.sourceforge.net)
  25  * REVISION HISTORY:
  26  *       06-06-2001  CSH  Created
  27  */
  28
  29 /* INCLUDES ******************************************************************/
  30
  31 #include <w32k.h>
  32
  33 #define NDEBUG
  34 #include <debug.h>
  35
  36 typedef struct
  37 {
  38    UINT uFlags;
  39    UINT uTimeout;
  40    ULONG_PTR Result;
  41 }
  42 DOSENDMESSAGE, *PDOSENDMESSAGE;
  43
  44 /* FUNCTIONS *****************************************************************/
  45
  46 NTSTATUS FASTCALL
  47 IntInitMessageImpl(VOID)
  48 {
  49    return STATUS_SUCCESS;
  50 }
  51
  52 NTSTATUS FASTCALL
  53 IntCleanupMessageImpl(VOID)
  54 {
  55    return STATUS_SUCCESS;
  56 }
  57
  58 #define MMS_SIZE_WPARAM      -1
  59 #define MMS_SIZE_WPARAMWCHAR -2
  60 #define MMS_SIZE_LPARAMSZ    -3
  61 #define MMS_SIZE_SPECIAL     -4
  62 #define MMS_FLAG_READ        0x01
  63 #define MMS_FLAG_WRITE       0x02
  64 #define MMS_FLAG_READWRITE   (MMS_FLAG_READ | MMS_FLAG_WRITE)
  65 typedef struct tagMSGMEMORY
  66 {
  67    UINT Message;
  68    UINT Size;
  69    INT Flags;
  70 }
  71 MSGMEMORY, *PMSGMEMORY;
  72
  73 static MSGMEMORY MsgMemory[] =
  74    {
  75       { WM_CREATE, MMS_SIZE_SPECIAL, MMS_FLAG_READWRITE },
  76       { WM_DDE_ACK, sizeof(KMDDELPARAM), MMS_FLAG_READ },
  77       { WM_DDE_EXECUTE, MMS_SIZE_WPARAM, MMS_FLAG_READ },
  78       { WM_GETMINMAXINFO, sizeof(MINMAXINFO), MMS_FLAG_READWRITE },
  79       { WM_GETTEXT, MMS_SIZE_WPARAMWCHAR, MMS_FLAG_WRITE },
  80       { WM_NCCALCSIZE, MMS_SIZE_SPECIAL, MMS_FLAG_READWRITE },
  81       { WM_NCCREATE, MMS_SIZE_SPECIAL, MMS_FLAG_READWRITE },
  82       { WM_SETTEXT, MMS_SIZE_LPARAMSZ, MMS_FLAG_READ },
  83       { WM_STYLECHANGED, sizeof(STYLESTRUCT), MMS_FLAG_READ },
  84       { WM_STYLECHANGING, sizeof(STYLESTRUCT), MMS_FLAG_READWRITE },
  85       { WM_COPYDATA, MMS_SIZE_SPECIAL, MMS_FLAG_READ },
  86       { WM_WINDOWPOSCHANGED, sizeof(WINDOWPOS), MMS_FLAG_READ },
  87       { WM_WINDOWPOSCHANGING, sizeof(WINDOWPOS), MMS_FLAG_READWRITE },
  88    };
  89
  90 static PMSGMEMORY FASTCALL
  91 FindMsgMemory(UINT Msg)
  92 {
  93    PMSGMEMORY MsgMemoryEntry;
  94
  95    /* See if this message type is present in the table */
  96    for (MsgMemoryEntry = MsgMemory;
  97          MsgMemoryEntry < MsgMemory + sizeof(MsgMemory) / sizeof(MSGMEMORY);
  98          MsgMemoryEntry++)
  99    {
 100       if (Msg == MsgMemoryEntry->Message)
 101       {
 102          return MsgMemoryEntry;
 103       }
 104    }
 105
 106    return NULL;
 107 }
 108
 109 static UINT FASTCALL
 110 MsgMemorySize(PMSGMEMORY MsgMemoryEntry, WPARAM wParam, LPARAM lParam)
 111 {
 112    CREATESTRUCTW *Cs;
 113    PUNICODE_STRING WindowName;
 114    PUNICODE_STRING ClassName;
 115    UINT Size = 0;
 116
 117    _SEH_TRY
 118    {
 119       if (MMS_SIZE_WPARAM == MsgMemoryEntry->Size)
 120       {
 121          Size = (UINT)wParam;
 122       }
 123       else if (MMS_SIZE_WPARAMWCHAR == MsgMemoryEntry->Size)
 124       {
 125          Size = (UINT) (wParam * sizeof(WCHAR));
 126       }
 127       else if (MMS_SIZE_LPARAMSZ == MsgMemoryEntry->Size)
 128       {
 129          Size = (UINT) ((wcslen((PWSTR) lParam) + 1) * sizeof(WCHAR));
 130       }
 131       else if (MMS_SIZE_SPECIAL == MsgMemoryEntry->Size)
 132       {
 133          switch(MsgMemoryEntry->Message)
 134          {
 135             case WM_CREATE:
 136             case WM_NCCREATE:
 137                Cs = (CREATESTRUCTW *) lParam;
 138                WindowName = (PUNICODE_STRING) Cs->lpszName;
 139                ClassName = (PUNICODE_STRING) Cs->lpszClass;
 140                Size = sizeof(CREATESTRUCTW) + WindowName->Length + sizeof(WCHAR);
 141                if (IS_ATOM(ClassName->Buffer))
 142                {
 143                   Size += sizeof(WCHAR) + sizeof(ATOM);
 144                }
 145                else
 146                {
 147                   Size += sizeof(WCHAR) + ClassName->Length + sizeof(WCHAR);
 148                }
 149                break;
 150
 151             case WM_NCCALCSIZE:
 152                Size = wParam ? sizeof(NCCALCSIZE_PARAMS) + sizeof(WINDOWPOS) : sizeof(RECT);
 153                break;
 154
 155             case WM_COPYDATA:
 156                Size = sizeof(COPYDATASTRUCT) + ((PCOPYDATASTRUCT)lParam)->cbData;
 157                break;
 158
 159             default:
 160                assert(FALSE);
 161                Size = 0;
 162                break;
 163          }
 164       }
 165       else
 166       {
 167          Size = MsgMemoryEntry->Size;
 168       }
 169    }
 170    _SEH_HANDLE
 171    {
 172       DPRINT1("Exception caught in MsgMemorySize()! Status: 0x%x\n", _SEH_GetExceptionCode());
 173       Size = 0;
 174    }
 175    _SEH_END;
 176    return Size;
 177 }
 178
 179 static NTSTATUS
 180 PackParam(LPARAM *lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam)
 181 {
 182    NCCALCSIZE_PARAMS *UnpackedNcCalcsize;
 183    NCCALCSIZE_PARAMS *PackedNcCalcsize;
 184    CREATESTRUCTW *UnpackedCs;
 185    CREATESTRUCTW *PackedCs;
 186    PUNICODE_STRING WindowName;
 187    PUNICODE_STRING ClassName;
 188    UINT Size;
 189    PCHAR CsData;
 190
 191    *lParamPacked = lParam;
 192    if (WM_NCCALCSIZE == Msg && wParam)
 193    {
 194       UnpackedNcCalcsize = (NCCALCSIZE_PARAMS *) lParam;
 195       if (UnpackedNcCalcsize->lppos != (PWINDOWPOS) (UnpackedNcCalcsize + 1))
 196       {
 197          PackedNcCalcsize = ExAllocatePoolWithTag(PagedPool,
 198                             sizeof(NCCALCSIZE_PARAMS) + sizeof(WINDOWPOS),
 199                             TAG_MSG);
 200          if (NULL == PackedNcCalcsize)
 201          {
 202             DPRINT1("Not enough memory to pack lParam\n");
 203             return STATUS_NO_MEMORY;
 204          }
 205          RtlCopyMemory(PackedNcCalcsize, UnpackedNcCalcsize, sizeof(NCCALCSIZE_PARAMS));
 206          PackedNcCalcsize->lppos = (PWINDOWPOS) (PackedNcCalcsize + 1);
 207          RtlCopyMemory(PackedNcCalcsize->lppos, UnpackedNcCalcsize->lppos, sizeof(WINDOWPOS));
 208          *lParamPacked = (LPARAM) PackedNcCalcsize;
 209       }
 210    }
 211    else if (WM_CREATE == Msg || WM_NCCREATE == Msg)
 212    {
 213       UnpackedCs = (CREATESTRUCTW *) lParam;
 214       WindowName = (PUNICODE_STRING) UnpackedCs->lpszName;
 215       ClassName = (PUNICODE_STRING) UnpackedCs->lpszClass;
 216       Size = sizeof(CREATESTRUCTW) + WindowName->Length + sizeof(WCHAR);
 217       if (IS_ATOM(ClassName->Buffer))
 218       {
 219          Size += sizeof(WCHAR) + sizeof(ATOM);
 220       }
 221       else
 222       {
 223          Size += sizeof(WCHAR) + ClassName->Length + sizeof(WCHAR);
 224       }
 225       PackedCs = ExAllocatePoolWithTag(PagedPool, Size, TAG_MSG);
 226       if (NULL == PackedCs)
 227       {
 228          DPRINT1("Not enough memory to pack lParam\n");
 229          return STATUS_NO_MEMORY;
 230       }
 231       RtlCopyMemory(PackedCs, UnpackedCs, sizeof(CREATESTRUCTW));
 232       CsData = (PCHAR) (PackedCs + 1);
 233       PackedCs->lpszName = (LPCWSTR) (CsData - (PCHAR) PackedCs);
 234       RtlCopyMemory(CsData, WindowName->Buffer, WindowName->Length);
 235       CsData += WindowName->Length;
 236       *((WCHAR *) CsData) = L'\0';
 237       CsData += sizeof(WCHAR);
 238       PackedCs->lpszClass = (LPCWSTR) (CsData - (PCHAR) PackedCs);
 239       if (IS_ATOM(ClassName->Buffer))
 240       {
 241          *((WCHAR *) CsData) = L'A';
 242          CsData += sizeof(WCHAR);
 243          *((ATOM *) CsData) = (ATOM)(DWORD_PTR) ClassName->Buffer;
 244          CsData += sizeof(ATOM);
 245       }
 246       else
 247       {
 248          *((WCHAR *) CsData) = L'S';
 249          CsData += sizeof(WCHAR);
 250          RtlCopyMemory(CsData, ClassName->Buffer, ClassName->Length);
 251          CsData += ClassName->Length;
 252          *((WCHAR *) CsData) = L'\0';
 253          CsData += sizeof(WCHAR);
 254       }
 255       ASSERT(CsData == (PCHAR) PackedCs + Size);
 256       *lParamPacked = (LPARAM) PackedCs;
 257    }
 258
 259    return STATUS_SUCCESS;
 260 }
 261
 262 static NTSTATUS
 263 UnpackParam(LPARAM lParamPacked, UINT Msg, WPARAM wParam, LPARAM lParam)
 264 {
 265    NCCALCSIZE_PARAMS *UnpackedParams;
 266    NCCALCSIZE_PARAMS *PackedParams;
 267    PWINDOWPOS UnpackedWindowPos;
 268
 269    if (lParamPacked == lParam)
 270    {
 271       return STATUS_SUCCESS;
 272    }
 273
 274    if (WM_NCCALCSIZE == Msg && wParam)
 275    {
 276       PackedParams = (NCCALCSIZE_PARAMS *) lParamPacked;
 277       UnpackedParams = (NCCALCSIZE_PARAMS *) lParam;
 278       UnpackedWindowPos = UnpackedParams->lppos;
 279       RtlCopyMemory(UnpackedParams, PackedParams, sizeof(NCCALCSIZE_PARAMS));
 280       UnpackedParams->lppos = UnpackedWindowPos;
 281       RtlCopyMemory(UnpackedWindowPos, PackedParams + 1, sizeof(WINDOWPOS));
 282       ExFreePool((PVOID) lParamPacked);
 283
 284       return STATUS_SUCCESS;
 285    }
 286    else if (WM_CREATE == Msg || WM_NCCREATE == Msg)
 287    {
 288       ExFreePool((PVOID) lParamPacked);
 289
 290       return STATUS_SUCCESS;
 291    }
 292
 293    ASSERT(FALSE);
 294
 295    return STATUS_INVALID_PARAMETER;
 296 }
 297
 298 BOOL
 299 STDCALL
 300 NtUserCallMsgFilter(
 301    LPMSG msg,
 302    INT code)
 303 {
 304    DECLARE_RETURN(BOOL);
 305
 306    DPRINT("Enter NtUserCallMsgFilter\n");
 307    UserEnterExclusive();
 308
 309    if ( UserCallNextHookEx( WH_SYSMSGFILTER, code, 0, (LPARAM)msg, FALSE))
 310       RETURN( TRUE);
 311    RETURN( UserCallNextHookEx( WH_MSGFILTER, code, 0, (LPARAM)msg, FALSE));
 312
 313 CLEANUP:
 314    DPRINT("Leave NtUserCallMsgFilter. ret=%i\n", _ret_);
 315    UserLeave();
 316    END_CLEANUP;
 317 }
 318
 319 LRESULT STDCALL
 320 NtUserDispatchMessage(PNTUSERDISPATCHMESSAGEINFO UnsafeMsgInfo)
 321 {
 322    NTSTATUS Status;
 323    NTUSERDISPATCHMESSAGEINFO MsgInfo;
 324    LRESULT Result = TRUE;
 325    DECLARE_RETURN(LRESULT);
 326
 327    DPRINT("Enter NtUserDispatchMessage\n");
 328    UserEnterExclusive();
 329
 330    Status = MmCopyFromCaller(&MsgInfo, UnsafeMsgInfo, sizeof(NTUSERDISPATCHMESSAGEINFO));
 331    if (! NT_SUCCESS(Status))
 332    {
 333       SetLastNtError(Status);
 334       RETURN( 0);
 335    }
 336
 337    /* Process timer messages. */
 338    if (WM_TIMER == MsgInfo.Msg.message && 0 != MsgInfo.Msg.lParam)
 339    {
 340       LARGE_INTEGER LargeTickCount;
 341       /* FIXME: Call hooks. */
 342
 343       /* FIXME: Check for continuing validity of timer. */
 344
 345       MsgInfo.HandledByKernel = FALSE;
 346       KeQueryTickCount(&LargeTickCount);
 347       MsgInfo.Proc = (WNDPROC) MsgInfo.Msg.lParam;
 348       MsgInfo.Msg.lParam = (LPARAM)LargeTickCount.u.LowPart;
 349    }
 350    else if (NULL == MsgInfo.Msg.hwnd)
 351    {
 352       MsgInfo.HandledByKernel = TRUE;
 353       Result = 0;
 354    }
 355    else
 356    {
 357       PWINDOW_OBJECT Window;
 358
 359       /* Get the window object. */
 360       Window = UserGetWindowObject(MsgInfo.Msg.hwnd);
 361       if (NULL == Window)
 362       {
 363          MsgInfo.HandledByKernel = TRUE;
 364          Result = 0;
 365       }
 366       else
 367       {
 368          if (Window->OwnerThread != PsGetCurrentThread())
 369          {
 370             DPRINT1("Window doesn't belong to the calling thread!\n");
 371             MsgInfo.HandledByKernel = TRUE;
 372             Result = 0;
 373          }
 374          else
 375          {
 376             /* FIXME: Call hook procedures. */
 377
 378             MsgInfo.HandledByKernel = FALSE;
 379             Result = 0;
 380
 381             if (Window->Wnd->IsSystem)
 382             {
 383                 MsgInfo.Proc = (!MsgInfo.Ansi ? Window->Wnd->WndProc : Window->Wnd->WndProcExtra);
 384             }
 385             else
 386             {
 387                 MsgInfo.Ansi = !Window->Wnd->Unicode;
 388                 MsgInfo.Proc = Window->Wnd->WndProc;
 389             }
 390          }
 391       }
 392    }
 393    Status = MmCopyToCaller(UnsafeMsgInfo, &MsgInfo, sizeof(NTUSERDISPATCHMESSAGEINFO));
 394    if (! NT_SUCCESS(Status))
 395    {
 396       SetLastNtError(Status);
 397       RETURN( 0);
 398    }
 399
 400    RETURN( Result);
 401
 402 CLEANUP:
 403    DPRINT("Leave NtUserDispatchMessage. ret=%i\n", _ret_);
 404    UserLeave();
 405    END_CLEANUP;
 406 }
 407
 408
 409 BOOL STDCALL
 410 NtUserTranslateMessage(LPMSG lpMsg,
 411                        HKL dwhkl)
 412 {
 413    NTSTATUS Status;
 414    MSG SafeMsg;
 415    DECLARE_RETURN(BOOL);
 416
 417    DPRINT("Enter NtUserTranslateMessage\n");
 418    UserEnterExclusive();
 419
 420    Status = MmCopyFromCaller(&SafeMsg, lpMsg, sizeof(MSG));
 421    if(!NT_SUCCESS(Status))
 422    {
 423       SetLastNtError(Status);
 424       RETURN( FALSE);
 425    }
 426
 427    RETURN( IntTranslateKbdMessage(&SafeMsg, dwhkl));
 428
 429 CLEANUP:
 430    DPRINT("Leave NtUserTranslateMessage: ret=%i\n",_ret_);
 431    UserLeave();
 432    END_CLEANUP;
 433 }
 434
 435
 436 VOID FASTCALL
 437 co_IntSendHitTestMessages(PUSER_MESSAGE_QUEUE ThreadQueue, LPMSG Msg)
 438 {
 439    if(!Msg->hwnd || ThreadQueue->CaptureWindow)
 440    {
 441       return;
 442    }
 443
 444    switch(Msg->message)
 445    {
 446       case WM_MOUSEMOVE:
 447          {
 448             co_IntSendMessage(Msg->hwnd, WM_SETCURSOR, (WPARAM)Msg->hwnd, MAKELPARAM(HTCLIENT, Msg->message));
 449             break;
 450          }
 451       case WM_NCMOUSEMOVE:
 452          {
 453             co_IntSendMessage(Msg->hwnd, WM_SETCURSOR, (WPARAM)Msg->hwnd, MAKELPARAM(Msg->wParam, Msg->message));
 454             break;
 455          }
 456       case WM_LBUTTONDOWN:
 457       case WM_MBUTTONDOWN:
 458       case WM_RBUTTONDOWN:
 459       case WM_XBUTTONDOWN:
 460       case WM_LBUTTONDBLCLK:
 461       case WM_MBUTTONDBLCLK:
 462       case WM_RBUTTONDBLCLK:
 463       case WM_XBUTTONDBLCLK:
 464          {
 465             WPARAM wParam;
 466             PSYSTEM_CURSORINFO CurInfo;
 467
 468             if(!IntGetWindowStationObject(InputWindowStation))
 469             {
 470                break;
 471             }
 472             CurInfo = IntGetSysCursorInfo(InputWindowStation);
 473             wParam = (WPARAM)(CurInfo->ButtonsDown);
 474             ObDereferenceObject(InputWindowStation);
 475
 476             co_IntSendMessage(Msg->hwnd, WM_MOUSEMOVE, wParam, Msg->lParam);
 477             co_IntSendMessage(Msg->hwnd, WM_SETCURSOR, (WPARAM)Msg->hwnd, MAKELPARAM(HTCLIENT, Msg->message));
 478             break;
 479          }
 480       case WM_NCLBUTTONDOWN:
 481       case WM_NCMBUTTONDOWN:
 482       case WM_NCRBUTTONDOWN:
 483       case WM_NCXBUTTONDOWN:
 484       case WM_NCLBUTTONDBLCLK:
 485       case WM_NCMBUTTONDBLCLK:
 486       case WM_NCRBUTTONDBLCLK:
 487       case WM_NCXBUTTONDBLCLK:
 488          {
 489             co_IntSendMessage(Msg->hwnd, WM_NCMOUSEMOVE, (WPARAM)Msg->wParam, Msg->lParam);
 490             co_IntSendMessage(Msg->hwnd, WM_SETCURSOR, (WPARAM)Msg->hwnd, MAKELPARAM(Msg->wParam, Msg->message));
 491             break;
 492          }
 493    }
 494 }
 495
 496 BOOL FASTCALL
 497 co_IntActivateWindowMouse(PUSER_MESSAGE_QUEUE ThreadQueue, LPMSG Msg, PWINDOW_OBJECT MsgWindow,
 498                           USHORT *HitTest)
 499 {
 500    ULONG Result;
 501    PWINDOW_OBJECT Parent;
 502
 503    ASSERT_REFS_CO(MsgWindow);
 504
 505    if(*HitTest == (USHORT)HTTRANSPARENT)
 506    {
 507       /* eat the message, search again! */
 508       return TRUE;
 509    }
 510
 511    Parent = IntGetParent(MsgWindow);//fixme: deref retval?
 512    /* fixme: abort if no parent ? */
 513    Result = co_IntSendMessage(MsgWindow->hSelf,
 514                               WM_MOUSEACTIVATE,
 515                               (WPARAM) (Parent ? Parent->hSelf : NULL),
 516                               (LPARAM)MAKELONG(*HitTest, Msg->message)
 517                              );
 518
 519    switch (Result)
 520    {
 521       case MA_NOACTIVATEANDEAT:
 522          return TRUE;
 523       case MA_NOACTIVATE:
 524          break;
 525       case MA_ACTIVATEANDEAT:
 526          co_IntMouseActivateWindow(MsgWindow);
 527          return TRUE;
 528       default:
 529          /* MA_ACTIVATE */
 530          co_IntMouseActivateWindow(MsgWindow);
 531          break;
 532    }
 533
 534    return FALSE;
 535 }
 536
 537 BOOL FASTCALL
 538 co_IntTranslateMouseMessage(PUSER_MESSAGE_QUEUE ThreadQueue, LPMSG Msg, USHORT *HitTest, BOOL Remove)
 539 {
 540    PWINDOW_OBJECT Window;
 541    USER_REFERENCE_ENTRY Ref, DesktopRef;
 542
 543    if(!(Window = UserGetWindowObject(Msg->hwnd)))
 544    {
 545       /* let's just eat the message?! */
 546       return TRUE;
 547    }
 548
 549    UserRefObjectCo(Window, &Ref);
 550
 551    if(ThreadQueue == Window->MessageQueue &&
 552          ThreadQueue->CaptureWindow != Window->hSelf)
 553    {
 554       /* only send WM_NCHITTEST messages if we're not capturing the window! */
 555       *HitTest = co_IntSendMessage(Window->hSelf, WM_NCHITTEST, 0,
 556                                    MAKELONG(Msg->pt.x, Msg->pt.y));
 557
 558       if(*HitTest == (USHORT)HTTRANSPARENT)
 559       {
 560          PWINDOW_OBJECT DesktopWindow;
 561          HWND hDesktop = IntGetDesktopWindow();
 562
 563          if((DesktopWindow = UserGetWindowObject(hDesktop)))
 564          {
 565             PWINDOW_OBJECT Wnd;
 566
 567             UserRefObjectCo(DesktopWindow, &DesktopRef);
 568
 569             co_WinPosWindowFromPoint(DesktopWindow, Window->MessageQueue, &Msg->pt, &Wnd);
 570             if(Wnd)
 571             {
 572                if(Wnd != Window)
 573                {
 574                   /* post the message to the other window */
 575                   Msg->hwnd = Wnd->hSelf;
 576                   if(!(Wnd->Status & WINDOWSTATUS_DESTROYING))
 577                   {
 578                      MsqPostMessage(Wnd->MessageQueue, Msg, FALSE,
 579                                     Msg->message == WM_MOUSEMOVE ? QS_MOUSEMOVE :
 580                                     QS_MOUSEBUTTON);
 581                   }
 582
 583                   /* eat the message */
 584                   UserDereferenceObject(Wnd);
 585                   UserDerefObjectCo(DesktopWindow);
 586                   UserDerefObjectCo(Window);
 587                   return TRUE;
 588                }
 589                UserDereferenceObject(Wnd);
 590             }
 591
 592             UserDerefObjectCo(DesktopWindow);
 593          }
 594       }
 595    }
 596    else
 597    {
 598       *HitTest = HTCLIENT;
 599    }
 600
 601    if(IS_BTN_MESSAGE(Msg->message, DOWN))
 602    {
 603       /* generate double click messages, if necessary */
 604       if ((((*HitTest) != HTCLIENT) ||
 605             (Window->Wnd->Class->Style & CS_DBLCLKS)) &&
 606             MsqIsDblClk(Msg, Remove))
 607       {
 608          Msg->message += WM_LBUTTONDBLCLK - WM_LBUTTONDOWN;
 609       }
 610    }
 611
 612    if(Msg->message != WM_MOUSEWHEEL)
 613    {
 614
 615       if ((*HitTest) != HTCLIENT)
 616       {
 617          Msg->message += WM_NCMOUSEMOVE - WM_MOUSEMOVE;
 618          if((Msg->message == WM_NCRBUTTONUP) &&
 619                (((*HitTest) == HTCAPTION) || ((*HitTest) == HTSYSMENU)))
 620          {
 621             Msg->message = WM_CONTEXTMENU;
 622             Msg->wParam = (WPARAM)Window->hSelf;
 623          }
 624          else
 625          {
 626             Msg->wParam = *HitTest;
 627          }
 628          Msg->lParam = MAKELONG(Msg->pt.x, Msg->pt.y);
 629       }
 630       else if(ThreadQueue->MoveSize == NULL &&
 631               ThreadQueue->MenuOwner == NULL)
 632       {
 633          /* NOTE: Msg->pt should remain in screen coordinates. -- FiN */
 634          Msg->lParam = MAKELONG(
 635                           Msg->pt.x - (WORD)Window->Wnd->ClientRect.left,
 636                           Msg->pt.y - (WORD)Window->Wnd->ClientRect.top);
 637       }
 638    }
 639
 640    UserDerefObjectCo(Window);
 641    return FALSE;
 642 }
 643
 644
 645 /*
 646  * Internal version of PeekMessage() doing all the work
 647  */
 648 BOOL FASTCALL
 649 co_IntPeekMessage(PUSER_MESSAGE Msg,
 650                   HWND hWnd,
 651                   UINT MsgFilterMin,
 652                   UINT MsgFilterMax,
 653                   UINT RemoveMsg)
 654 {
 655    LARGE_INTEGER LargeTickCount;
 656    PUSER_MESSAGE_QUEUE ThreadQueue;
 657    PUSER_MESSAGE Message;
 658    BOOL Present, RemoveMessages;
 659    USER_REFERENCE_ENTRY Ref;
 660    USHORT HitTest;
 661    MOUSEHOOKSTRUCT MHook;
 662
 663    /* The queues and order in which they are checked are documented in the MSDN
 664       article on GetMessage() */
 665
 666    ThreadQueue = (PUSER_MESSAGE_QUEUE)PsGetCurrentThreadWin32Thread()->MessageQueue;
 667
 668    /* Inspect RemoveMsg flags */
 669    /* FIXME: The only flag we process is PM_REMOVE - processing of others must still be implemented */
 670    RemoveMessages = RemoveMsg & PM_REMOVE;
 671
 672 CheckMessages:
 673
 674    Present = FALSE;
 675
 676    KeQueryTickCount(&LargeTickCount);
 677    ThreadQueue->LastMsgRead = LargeTickCount.u.LowPart;
 678
 679    /* Dispatch sent messages here. */
 680    while (co_MsqDispatchOneSentMessage(ThreadQueue))
 681       ;
 682
 683    /* Now look for a quit message. */
 684
 685    if (ThreadQueue->QuitPosted)
 686    {
 687       /* According to the PSDK, WM_QUIT messages are always returned, regardless
 688          of the filter specified */
 689       Msg->Msg.hwnd = NULL;
 690       Msg->Msg.message = WM_QUIT;
 691       Msg->Msg.wParam = ThreadQueue->QuitExitCode;
 692       Msg->Msg.lParam = 0;
 693       Msg->FreeLParam = FALSE;
 694       if (RemoveMessages)
 695       {
 696          ThreadQueue->QuitPosted = FALSE;
 697       }
 698       goto MsgExit;
 699    }
 700
 701    /* Now check for normal messages. */
 702    Present = co_MsqFindMessage(ThreadQueue,
 703                                FALSE,
 704                                RemoveMessages,
 705                                hWnd,
 706                                MsgFilterMin,
 707                                MsgFilterMax,
 708                                &Message);
 709    if (Present)
 710    {
 711       RtlCopyMemory(Msg, Message, sizeof(USER_MESSAGE));
 712       if (RemoveMessages)
 713       {
 714          MsqDestroyMessage(Message);
 715       }
 716       goto MessageFound;
 717    }
 718
 719    /* Check for hardware events. */
 720    Present = co_MsqFindMessage(ThreadQueue,
 721                                TRUE,
 722                                RemoveMessages,
 723                                hWnd,
 724                                MsgFilterMin,
 725                                MsgFilterMax,
 726                                &Message);
 727    if (Present)
 728    {
 729       RtlCopyMemory(Msg, Message, sizeof(USER_MESSAGE));
 730       if (RemoveMessages)
 731       {
 732          MsqDestroyMessage(Message);
 733       }
 734       goto MessageFound;
 735    }
 736
 737    /* Check for sent messages again. */
 738    while (co_MsqDispatchOneSentMessage(ThreadQueue))
 739       ;
 740
 741    /* Check for paint messages. */
 742    if (IntGetPaintMessage(hWnd, MsgFilterMin, MsgFilterMax, PsGetCurrentThreadWin32Thread(), &Msg->Msg, RemoveMessages))
 743    {
 744       Msg->FreeLParam = FALSE;
 745       goto MsgExit;
 746    }
 747
 748    /* Check for WM_(SYS)TIMER messages */
 749    Present = MsqGetTimerMessage(ThreadQueue, hWnd, MsgFilterMin, MsgFilterMax,
 750                                 &Msg->Msg, RemoveMessages);
 751    if (Present)
 752    {
 753       Msg->FreeLParam = FALSE;
 754       goto MessageFound;
 755    }
 756
 757    if(Present)
 758    {
 759 MessageFound:
 760
 761       if(RemoveMessages)
 762       {
 763          PWINDOW_OBJECT MsgWindow = NULL;
 764
 765          if(Msg->Msg.hwnd && (MsgWindow = UserGetWindowObject(Msg->Msg.hwnd)) &&
 766                Msg->Msg.message >= WM_MOUSEFIRST && Msg->Msg.message <= WM_MOUSELAST)
 767          {
 768             USHORT HitTest;
 769
 770             UserRefObjectCo(MsgWindow, &Ref);
 771
 772             if(co_IntTranslateMouseMessage(ThreadQueue, &Msg->Msg, &HitTest, TRUE))
 773                /* FIXME - check message filter again, if the message doesn't match anymore,
 774                           search again */
 775             {
 776                UserDerefObjectCo(MsgWindow);
 777                /* eat the message, search again */
 778                goto CheckMessages;
 779             }
 780
 781             if(ThreadQueue->CaptureWindow == NULL)
 782             {
 783                co_IntSendHitTestMessages(ThreadQueue, &Msg->Msg);
 784                if((Msg->Msg.message != WM_MOUSEMOVE && Msg->Msg.message != WM_NCMOUSEMOVE) &&
 785                      IS_BTN_MESSAGE(Msg->Msg.message, DOWN) &&
 786                      co_IntActivateWindowMouse(ThreadQueue, &Msg->Msg, MsgWindow, &HitTest))
 787                {
 788                   UserDerefObjectCo(MsgWindow);
 789                   /* eat the message, search again */
 790                   goto CheckMessages;
 791                }
 792             }
 793
 794             UserDerefObjectCo(MsgWindow);
 795          }
 796          else
 797          {
 798             co_IntSendHitTestMessages(ThreadQueue, &Msg->Msg);
 799          }
 800
 801 //         if(MsgWindow)
 802 //         {
 803 //            UserDereferenceObject(MsgWindow);
 804 //         }
 805
 806          goto MsgExit;
 807       }
 808
 809       if((Msg->Msg.hwnd && Msg->Msg.message >= WM_MOUSEFIRST && Msg->Msg.message <= WM_MOUSELAST) &&
 810             co_IntTranslateMouseMessage(ThreadQueue, &Msg->Msg, &HitTest, FALSE))
 811          /* FIXME - check message filter again, if the message doesn't match anymore,
 812                     search again */
 813       {
 814          /* eat the message, search again */
 815          goto CheckMessages;
 816       }
 817 MsgExit:
 818       if ( ISITHOOKED(WH_MOUSE) &&
 819            Msg->Msg.message >= WM_MOUSEFIRST &&
 820            Msg->Msg.message <= WM_MOUSELAST )
 821       {
 822          MHook.pt           = Msg->Msg.pt;
 823          MHook.hwnd         = Msg->Msg.hwnd;
 824          MHook.wHitTestCode = HitTest;
 825          MHook.dwExtraInfo  = 0;
 826          if (co_HOOK_CallHooks( WH_MOUSE,
 827                                 RemoveMsg ? HC_ACTION : HC_NOREMOVE,
 828                                 Msg->Msg.message,
 829                                 (LPARAM)&MHook ))
 830          {
 831             if (ISITHOOKED(WH_CBT))
 832             {
 833                 MHook.pt           = Msg->Msg.pt;
 834                 MHook.hwnd         = Msg->Msg.hwnd;
 835                 MHook.wHitTestCode = HitTest;
 836                 MHook.dwExtraInfo  = 0;
 837                 co_HOOK_CallHooks( WH_CBT, HCBT_CLICKSKIPPED,
 838                                    Msg->Msg.message, (LPARAM)&MHook);
 839             }
 840             return FALSE;
 841          }
 842       }
 843       if ( ISITHOOKED(WH_KEYBOARD) &&
 844           (Msg->Msg.message == WM_KEYDOWN || Msg->Msg.message == WM_KEYUP) )
 845       {
 846          if (co_HOOK_CallHooks( WH_KEYBOARD,
 847                                 RemoveMsg ? HC_ACTION : HC_NOREMOVE,
 848                                 LOWORD(Msg->Msg.wParam),
 849                                 Msg->Msg.lParam))
 850          {
 851             if (ISITHOOKED(WH_CBT))
 852             {
 853                /* skip this message */
 854                co_HOOK_CallHooks( WH_CBT, HCBT_KEYSKIPPED,
 855                                   LOWORD(Msg->Msg.wParam), Msg->Msg.lParam );
 856             }
 857             return FALSE;
 858          }
 859       }
 860       // The WH_GETMESSAGE hook enables an application to monitor messages about to
 861       // be returned by the GetMessage or PeekMessage function.
 862       if (ISITHOOKED(WH_GETMESSAGE))
 863       {
 864          //DPRINT1("Peek WH_GETMESSAGE -> %x\n",&Msg);
 865          co_HOOK_CallHooks( WH_GETMESSAGE, HC_ACTION, RemoveMsg & PM_REMOVE, (LPARAM)&Msg->Msg);
 866       }
 867       return TRUE;
 868    }
 869
 870    return Present;
 871 }
 872
 873 BOOL STDCALL
 874 NtUserPeekMessage(PNTUSERGETMESSAGEINFO UnsafeInfo,
 875                   HWND hWnd,
 876                   UINT MsgFilterMin,
 877                   UINT MsgFilterMax,
 878                   UINT RemoveMsg)
 879 {
 880    NTSTATUS Status;
 881    BOOL Present;
 882    NTUSERGETMESSAGEINFO Info;
 883    PWINDOW_OBJECT Window;
 884    PMSGMEMORY MsgMemoryEntry;
 885    PVOID UserMem;
 886    UINT Size;
 887    USER_MESSAGE Msg;
 888    DECLARE_RETURN(BOOL);
 889
 890    DPRINT("Enter NtUserPeekMessage\n");
 891    UserEnterExclusive();
 892
 893    /* Validate input */
 894    if (hWnd && hWnd != INVALID_HANDLE_VALUE)
 895    {
 896       if (!(Window = UserGetWindowObject(hWnd)))
 897       {
 898          RETURN(-1);
 899       }
 900    }
 901
 902    if (MsgFilterMax < MsgFilterMin)
 903    {
 904       MsgFilterMin = 0;
 905       MsgFilterMax = 0;
 906    }
 907
 908    Present = co_IntPeekMessage(&Msg, hWnd, MsgFilterMin, MsgFilterMax, RemoveMsg);
 909    if (Present)
 910    {
 911
 912       Info.Msg = Msg.Msg;
 913       /* See if this message type is present in the table */
 914       MsgMemoryEntry = FindMsgMemory(Info.Msg.message);
 915       if (NULL == MsgMemoryEntry)
 916       {
 917          /* Not present, no copying needed */
 918          Info.LParamSize = 0;
 919       }
 920       else
 921       {
 922          /* Determine required size */
 923          Size = MsgMemorySize(MsgMemoryEntry, Info.Msg.wParam,
 924                               Info.Msg.lParam);
 925          /* Allocate required amount of user-mode memory */
 926          Info.LParamSize = Size;
 927          UserMem = NULL;
 928          Status = ZwAllocateVirtualMemory(NtCurrentProcess(), &UserMem, 0,
 929                                           &Info.LParamSize, MEM_COMMIT, PAGE_READWRITE);
 930          if (! NT_SUCCESS(Status))
 931          {
 932             SetLastNtError(Status);
 933             RETURN( (BOOL) -1);
 934          }
 935          /* Transfer lParam data to user-mode mem */
 936          Status = MmCopyToCaller(UserMem, (PVOID) Info.Msg.lParam, Size);
 937          if (! NT_SUCCESS(Status))
 938          {
 939             ZwFreeVirtualMemory(NtCurrentProcess(), (PVOID *) &UserMem,
 940                                 &Info.LParamSize, MEM_RELEASE);
 941             SetLastNtError(Status);
 942             RETURN( (BOOL) -1);
 943          }
 944          Info.Msg.lParam = (LPARAM) UserMem;
 945       }
 946       if (RemoveMsg && Msg.FreeLParam && 0 != Msg.Msg.lParam)
 947       {
 948          ExFreePool((void *) Msg.Msg.lParam);
 949       }
 950       Status = MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERGETMESSAGEINFO));
 951       if (! NT_SUCCESS(Status))
 952       {
 953          SetLastNtError(Status);
 954          RETURN( (BOOL) -1);
 955       }
 956    }
 957
 958    RETURN( Present);
 959
 960 CLEANUP:
 961    DPRINT("Leave NtUserPeekMessage, ret=%i\n",_ret_);
 962    UserLeave();
 963    END_CLEANUP;
 964 }
 965
 966 static BOOL FASTCALL
 967 co_IntWaitMessage(HWND Wnd,
 968                   UINT MsgFilterMin,
 969                   UINT MsgFilterMax)
 970 {
 971    PUSER_MESSAGE_QUEUE ThreadQueue;
 972    NTSTATUS Status;
 973    USER_MESSAGE Msg;
 974
 975    ThreadQueue = (PUSER_MESSAGE_QUEUE)PsGetCurrentThreadWin32Thread()->MessageQueue;
 976
 977    do
 978    {
 979       if (co_IntPeekMessage(&Msg, Wnd, MsgFilterMin, MsgFilterMax, PM_NOREMOVE))
 980       {
 981          return TRUE;
 982       }
 983
 984       /* Nothing found. Wait for new messages. */
 985       Status = co_MsqWaitForNewMessages(ThreadQueue, Wnd, MsgFilterMin, MsgFilterMax);
 986    }
 987    while ((STATUS_WAIT_0 <= Status && Status <= STATUS_WAIT_63) || STATUS_TIMEOUT == Status);
 988
 989    SetLastNtError(Status);
 990
 991    return FALSE;
 992 }
 993
 994 BOOL STDCALL
 995 NtUserGetMessage(PNTUSERGETMESSAGEINFO UnsafeInfo,
 996                  HWND hWnd,
 997                  UINT MsgFilterMin,
 998                  UINT MsgFilterMax)
 999 /*
1000  * FUNCTION: Get a message from the calling thread's message queue.
1001  * ARGUMENTS:
1002  *      UnsafeMsg - Pointer to the structure which receives the returned message.
1003  *      Wnd - Window whose messages are to be retrieved.
1004  *      MsgFilterMin - Integer value of the lowest message value to be
1005  *                     retrieved.
1006  *      MsgFilterMax - Integer value of the highest message value to be
1007  *                     retrieved.
1008  */
1009 {
1010    BOOL GotMessage;
1011    NTUSERGETMESSAGEINFO Info;
1012    NTSTATUS Status;
1013    PWINDOW_OBJECT Window = NULL;
1014    PMSGMEMORY MsgMemoryEntry;
1015    PVOID UserMem;
1016    UINT Size;
1017    USER_MESSAGE Msg;
1018    DECLARE_RETURN(BOOL);
1019 //   USER_REFERENCE_ENTRY Ref;
1020
1021    DPRINT("Enter NtUserGetMessage\n");
1022    UserEnterExclusive();
1023
1024    /* Validate input */
1025    if (hWnd && !(Window = UserGetWindowObject(hWnd)))
1026    {
1027       RETURN(-1);
1028    }
1029
1030 //   if (Window) UserRefObjectCo(Window, &Ref);
1031
1032    if (MsgFilterMax < MsgFilterMin)
1033    {
1034       MsgFilterMin = 0;
1035       MsgFilterMax = 0;
1036    }
1037
1038    do
1039    {
1040       GotMessage = co_IntPeekMessage(&Msg, hWnd, MsgFilterMin, MsgFilterMax, PM_REMOVE);
1041       if (GotMessage)
1042       {
1043          Info.Msg = Msg.Msg;
1044          /* See if this message type is present in the table */
1045          MsgMemoryEntry = FindMsgMemory(Info.Msg.message);
1046          if (NULL == MsgMemoryEntry)
1047          {
1048             /* Not present, no copying needed */
1049             Info.LParamSize = 0;
1050          }
1051          else
1052          {
1053             /* Determine required size */
1054             Size = MsgMemorySize(MsgMemoryEntry, Info.Msg.wParam,
1055                                  Info.Msg.lParam);
1056             /* Allocate required amount of user-mode memory */
1057             Info.LParamSize = Size;
1058             UserMem = NULL;
1059             Status = ZwAllocateVirtualMemory(NtCurrentProcess(), &UserMem, 0,
1060                                              &Info.LParamSize, MEM_COMMIT, PAGE_READWRITE);
1061
1062             if (! NT_SUCCESS(Status))
1063             {
1064                SetLastNtError(Status);
1065                RETURN( (BOOL) -1);
1066             }
1067             /* Transfer lParam data to user-mode mem */
1068             Status = MmCopyToCaller(UserMem, (PVOID) Info.Msg.lParam, Size);
1069             if (! NT_SUCCESS(Status))
1070             {
1071                ZwFreeVirtualMemory(NtCurrentProcess(), (PVOID *) &UserMem,
1072                                    &Info.LParamSize, MEM_DECOMMIT);
1073                SetLastNtError(Status);
1074                RETURN( (BOOL) -1);
1075             }
1076             Info.Msg.lParam = (LPARAM) UserMem;
1077          }
1078          if (Msg.FreeLParam && 0 != Msg.Msg.lParam)
1079          {
1080             ExFreePool((void *) Msg.Msg.lParam);
1081          }
1082          Status = MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERGETMESSAGEINFO));
1083          if (! NT_SUCCESS(Status))
1084          {
1085             SetLastNtError(Status);
1086             RETURN( (BOOL) -1);
1087          }
1088       }
1089       else if (! co_IntWaitMessage(hWnd, MsgFilterMin, MsgFilterMax))
1090       {
1091          RETURN( (BOOL) -1);
1092       }
1093    }
1094    while (! GotMessage);
1095
1096    RETURN( WM_QUIT != Info.Msg.message);
1097
1098 CLEANUP:
1099 //   if (Window) UserDerefObjectCo(Window);
1100
1101    DPRINT("Leave NtUserGetMessage\n");
1102    UserLeave();
1103    END_CLEANUP;
1104 }
1105
1106
1107 static NTSTATUS FASTCALL
1108 CopyMsgToKernelMem(MSG *KernelModeMsg, MSG *UserModeMsg, PMSGMEMORY MsgMemoryEntry)
1109 {
1110    NTSTATUS Status;
1111
1112    PVOID KernelMem;
1113    UINT Size;
1114
1115    *KernelModeMsg = *UserModeMsg;
1116
1117    /* See if this message type is present in the table */
1118    if (NULL == MsgMemoryEntry)
1119    {
1120       /* Not present, no copying needed */
1121       return STATUS_SUCCESS;
1122    }
1123
1124    /* Determine required size */
1125    Size = MsgMemorySize(MsgMemoryEntry, UserModeMsg->wParam, UserModeMsg->lParam);
1126
1127    if (0 != Size)
1128    {
1129       /* Allocate kernel mem */
1130       KernelMem = ExAllocatePoolWithTag(PagedPool, Size, TAG_MSG);
1131       if (NULL == KernelMem)
1132       {
1133          DPRINT1("Not enough memory to copy message to kernel mem\n");
1134          return STATUS_NO_MEMORY;
1135       }
1136       KernelModeMsg->lParam = (LPARAM) KernelMem;
1137
1138       /* Copy data if required */
1139       if (0 != (MsgMemoryEntry->Flags & MMS_FLAG_READ))
1140       {
1141          Status = MmCopyFromCaller(KernelMem, (PVOID) UserModeMsg->lParam, Size);
1142          if (! NT_SUCCESS(Status))
1143          {
1144             DPRINT1("Failed to copy message to kernel: invalid usermode buffer\n");
1145             ExFreePool(KernelMem);
1146             return Status;
1147          }
1148       }
1149       else
1150       {
1151          /* Make sure we don't pass any secrets to usermode */
1152          RtlZeroMemory(KernelMem, Size);
1153       }
1154    }
1155    else
1156    {
1157       KernelModeMsg->lParam = 0;
1158    }
1159
1160    return STATUS_SUCCESS;
1161 }
1162
1163 static NTSTATUS FASTCALL
1164 CopyMsgToUserMem(MSG *UserModeMsg, MSG *KernelModeMsg)
1165 {
1166    NTSTATUS Status;
1167    PMSGMEMORY MsgMemoryEntry;
1168    UINT Size;
1169
1170    /* See if this message type is present in the table */
1171    MsgMemoryEntry = FindMsgMemory(UserModeMsg->message);
1172    if (NULL == MsgMemoryEntry)
1173    {
1174       /* Not present, no copying needed */
1175       return STATUS_SUCCESS;
1176    }
1177
1178    /* Determine required size */
1179    Size = MsgMemorySize(MsgMemoryEntry, UserModeMsg->wParam, UserModeMsg->lParam);
1180
1181    if (0 != Size)
1182    {
1183       /* Copy data if required */
1184       if (0 != (MsgMemoryEntry->Flags & MMS_FLAG_WRITE))
1185       {
1186          Status = MmCopyToCaller((PVOID) UserModeMsg->lParam, (PVOID) KernelModeMsg->lParam, Size);
1187          if (! NT_SUCCESS(Status))
1188          {
1189             DPRINT1("Failed to copy message from kernel: invalid usermode buffer\n");
1190             ExFreePool((PVOID) KernelModeMsg->lParam);
1191             return Status;
1192          }
1193       }
1194
1195       ExFreePool((PVOID) KernelModeMsg->lParam);
1196    }
1197
1198    return STATUS_SUCCESS;
1199 }
1200
1201 BOOL FASTCALL
1202 UserPostMessage(HWND Wnd,
1203                 UINT Msg,
1204                 WPARAM wParam,
1205                 LPARAM lParam)
1206 {
1207    MSG UserModeMsg, KernelModeMsg;
1208    LARGE_INTEGER LargeTickCount;
1209    NTSTATUS Status;
1210    PMSGMEMORY MsgMemoryEntry;
1211
1212    if (WM_QUIT == Msg)
1213    {
1214       MsqPostQuitMessage(PsGetCurrentThreadWin32Thread()->MessageQueue, wParam);
1215    }
1216    else if (Wnd == HWND_BROADCAST)
1217    {
1218       HWND *List;
1219       PWINDOW_OBJECT DesktopWindow;
1220       ULONG i;
1221
1222       DesktopWindow = UserGetWindowObject(IntGetDesktopWindow());
1223       List = IntWinListChildren(DesktopWindow);
1224
1225       if (List != NULL)
1226       {
1227          for (i = 0; List[i]; i++)
1228             UserPostMessage(List[i], Msg, wParam, lParam);
1229          ExFreePool(List);
1230       }
1231    }
1232    else
1233    {
1234       PWINDOW_OBJECT Window;
1235
1236       Window = UserGetWindowObject(Wnd);
1237       if (NULL == Window)
1238       {
1239          return FALSE;
1240       }
1241       if(Window->Status & WINDOWSTATUS_DESTROYING)
1242       {
1243          DPRINT1("Attempted to post message to window 0x%x that is being destroyed!\n", Wnd);
1244          /* FIXME - last error code? */
1245          return FALSE;
1246       }
1247
1248       UserModeMsg.hwnd = Wnd;
1249       UserModeMsg.message = Msg;
1250       UserModeMsg.wParam = wParam;
1251       UserModeMsg.lParam = lParam;
1252       MsgMemoryEntry = FindMsgMemory(UserModeMsg.message);
1253       Status = CopyMsgToKernelMem(&KernelModeMsg, &UserModeMsg, MsgMemoryEntry);
1254       if (! NT_SUCCESS(Status))
1255       {
1256          SetLastWin32Error(ERROR_INVALID_PARAMETER);
1257          return FALSE;
1258       }
1259       IntGetCursorLocation(PsGetCurrentThreadWin32Thread()->Desktop->WindowStation,
1260                            &KernelModeMsg.pt);
1261       KeQueryTickCount(&LargeTickCount);
1262       KernelModeMsg.time = MsqCalculateMessageTime(&LargeTickCount);
1263       MsqPostMessage(Window->MessageQueue, &KernelModeMsg,
1264                      NULL != MsgMemoryEntry && 0 != KernelModeMsg.lParam,
1265                      QS_POSTMESSAGE);
1266    }
1267
1268    return TRUE;
1269 }
1270
1271
1272 BOOL STDCALL
1273 NtUserPostMessage(HWND hWnd,
1274                   UINT Msg,
1275                   WPARAM wParam,
1276                   LPARAM lParam)
1277 {
1278    DECLARE_RETURN(BOOL);
1279
1280    DPRINT("Enter NtUserPostMessage\n");
1281    UserEnterExclusive();
1282
1283    RETURN(UserPostMessage(hWnd, Msg, wParam, lParam));
1284
1285 CLEANUP:
1286    DPRINT("Leave NtUserPostMessage, ret=%i\n",_ret_);
1287    UserLeave();
1288    END_CLEANUP;
1289 }
1290
1291
1292
1293 BOOL STDCALL
1294 NtUserPostThreadMessage(DWORD idThread,
1295                         UINT Msg,
1296                         WPARAM wParam,
1297                         LPARAM lParam)
1298 {
1299    MSG UserModeMsg, KernelModeMsg;
1300    PETHREAD peThread;
1301    PW32THREAD pThread;
1302    NTSTATUS Status;
1303    PMSGMEMORY MsgMemoryEntry;
1304    DECLARE_RETURN(BOOL);
1305
1306    DPRINT("Enter NtUserPostThreadMessage\n");
1307    UserEnterExclusive();
1308
1309    Status = PsLookupThreadByThreadId((HANDLE)idThread,&peThread);
1310
1311    if( Status == STATUS_SUCCESS )
1312    {
1313       pThread = (PW32THREAD)peThread->Tcb.Win32Thread;
1314       if( !pThread || !pThread->MessageQueue )
1315       {
1316          ObDereferenceObject( peThread );
1317          RETURN( FALSE);
1318       }
1319
1320       UserModeMsg.hwnd = NULL;
1321       UserModeMsg.message = Msg;
1322       UserModeMsg.wParam = wParam;
1323       UserModeMsg.lParam = lParam;
1324       MsgMemoryEntry = FindMsgMemory(UserModeMsg.message);
1325       Status = CopyMsgToKernelMem(&KernelModeMsg, &UserModeMsg, MsgMemoryEntry);
1326       if (! NT_SUCCESS(Status))
1327       {
1328          ObDereferenceObject( peThread );
1329          SetLastWin32Error(ERROR_INVALID_PARAMETER);
1330          RETURN( FALSE);
1331       }
1332       MsqPostMessage(pThread->MessageQueue, &KernelModeMsg,
1333                      NULL != MsgMemoryEntry && 0 != KernelModeMsg.lParam,
1334                      QS_POSTMESSAGE);
1335       ObDereferenceObject( peThread );
1336       RETURN( TRUE);
1337    }
1338    else
1339    {
1340       SetLastNtError( Status );
1341       RETURN( FALSE);
1342    }
1343
1344 CLEANUP:
1345    DPRINT("Leave NtUserPostThreadMessage, ret=%i\n",_ret_);
1346    UserLeave();
1347    END_CLEANUP;
1348 }
1349
1350 DWORD STDCALL
1351 NtUserQuerySendMessage(DWORD Unknown0)
1352 {
1353    UNIMPLEMENTED;
1354
1355    return 0;
1356 }
1357
1358 LRESULT FASTCALL
1359 co_IntSendMessage(HWND hWnd,
1360                   UINT Msg,
1361                   WPARAM wParam,
1362                   LPARAM lParam)
1363 {
1364    ULONG_PTR Result = 0;
1365    if(co_IntSendMessageTimeout(hWnd, Msg, wParam, lParam, SMTO_NORMAL, 0, &Result))
1366    {
1367       return (LRESULT)Result;
1368    }
1369    return 0;
1370 }
1371
1372 static
1373 LRESULT FASTCALL
1374 co_IntSendMessageTimeoutSingle(HWND hWnd,
1375                                UINT Msg,
1376                                WPARAM wParam,
1377                                LPARAM lParam,
1378                                UINT uFlags,
1379                                UINT uTimeout,
1380                                ULONG_PTR *uResult)
1381 {
1382    ULONG_PTR Result;
1383    NTSTATUS Status;
1384    PWINDOW_OBJECT Window = NULL;
1385    PMSGMEMORY MsgMemoryEntry;
1386    INT lParamBufferSize;
1387    LPARAM lParamPacked;
1388    PW32THREAD Win32Thread;
1389    DECLARE_RETURN(LRESULT);
1390    USER_REFERENCE_ENTRY Ref;
1391
1392    /* FIXME: Call hooks. */
1393    if (!(Window = UserGetWindowObject(hWnd)))
1394    {
1395        RETURN( FALSE);
1396    }
1397
1398    UserRefObjectCo(Window, &Ref);
1399
1400    Win32Thread = PsGetCurrentThreadWin32Thread();
1401
1402    if (NULL != Win32Thread &&
1403          Window->MessageQueue == Win32Thread->MessageQueue)
1404    {
1405       if (Win32Thread->IsExiting)
1406       {
1407          /* Never send messages to exiting threads */
1408           RETURN( FALSE);
1409       }
1410
1411       /* See if this message type is present in the table */
1412       MsgMemoryEntry = FindMsgMemory(Msg);
1413       if (NULL == MsgMemoryEntry)
1414       {
1415          lParamBufferSize = -1;
1416       }
1417       else
1418       {
1419          lParamBufferSize = MsgMemorySize(MsgMemoryEntry, wParam, lParam);
1420       }
1421
1422       if (! NT_SUCCESS(PackParam(&lParamPacked, Msg, wParam, lParam)))
1423       {
1424          DPRINT1("Failed to pack message parameters\n");
1425           RETURN( FALSE);
1426       }
1427
1428       Result = (ULONG_PTR)co_IntCallWindowProc(Window->Wnd->WndProc, !Window->Wnd->Unicode, hWnd, Msg, wParam,
1429                lParamPacked,lParamBufferSize);
1430
1431       if(uResult)
1432       {
1433          *uResult = Result;
1434       }
1435
1436       if (! NT_SUCCESS(UnpackParam(lParamPacked, Msg, wParam, lParam)))
1437       {
1438          DPRINT1("Failed to unpack message parameters\n");
1439           RETURN( TRUE);
1440       }
1441
1442        RETURN( TRUE);
1443    }
1444
1445    if(uFlags & SMTO_ABORTIFHUNG && MsqIsHung(Window->MessageQueue))
1446    {
1447       /* FIXME - Set a LastError? */
1448        RETURN( FALSE);
1449    }
1450
1451    if(Window->Status & WINDOWSTATUS_DESTROYING)
1452    {
1453       /* FIXME - last error? */
1454       DPRINT1("Attempted to send message to window 0x%x that is being destroyed!\n", hWnd);
1455        RETURN( FALSE);
1456    }
1457
1458    Status = co_MsqSendMessage(Window->MessageQueue, hWnd, Msg, wParam, lParam,
1459                               uTimeout, (uFlags & SMTO_BLOCK), FALSE, uResult);
1460
1461
1462    if (STATUS_TIMEOUT == Status)
1463    {
1464       /* MSDN says GetLastError() should return 0 after timeout */
1465       SetLastWin32Error(0);
1466        RETURN( FALSE);
1467    }
1468    else if (! NT_SUCCESS(Status))
1469    {
1470       SetLastNtError(Status);
1471        RETURN( FALSE);
1472    }
1473
1474    RETURN( TRUE);
1475
1476 CLEANUP:
1477    if (Window) UserDerefObjectCo(Window);
1478    END_CLEANUP;
1479 }
1480
1481 LRESULT FASTCALL
1482 co_IntSendMessageTimeout(HWND hWnd,
1483                          UINT Msg,
1484                          WPARAM wParam,
1485                          LPARAM lParam,
1486                          UINT uFlags,
1487                          UINT uTimeout,
1488                          ULONG_PTR *uResult)
1489 {
1490    PWINDOW_OBJECT DesktopWindow;
1491    HWND *Children;
1492    HWND *Child;
1493
1494    if (HWND_BROADCAST != hWnd)
1495    {
1496       return co_IntSendMessageTimeoutSingle(hWnd, Msg, wParam, lParam, uFlags, uTimeout, uResult);
1497    }
1498
1499    DesktopWindow = UserGetWindowObject(IntGetDesktopWindow());
1500    if (NULL == DesktopWindow)
1501    {
1502       SetLastWin32Error(ERROR_INTERNAL_ERROR);
1503       return 0;
1504    }
1505
1506    Children = IntWinListChildren(DesktopWindow);
1507    if (NULL == Children)
1508    {
1509       return 0;
1510    }
1511
1512    for (Child = Children; NULL != *Child; Child++)
1513    {
1514       co_IntSendMessageTimeoutSingle(*Child, Msg, wParam, lParam, uFlags, uTimeout, uResult);
1515    }
1516
1517    ExFreePool(Children);
1518
1519    return (LRESULT) TRUE;
1520 }
1521
1522
1523 /* This function posts a message if the destination's message queue belongs to
1524    another thread, otherwise it sends the message. It does not support broadcast
1525    messages! */
1526 LRESULT FASTCALL
1527 co_IntPostOrSendMessage(HWND hWnd,
1528                         UINT Msg,
1529                         WPARAM wParam,
1530                         LPARAM lParam)
1531 {
1532    ULONG_PTR Result;
1533    PWINDOW_OBJECT Window;
1534
1535    if(hWnd == HWND_BROADCAST)
1536    {
1537       return 0;
1538    }
1539
1540    if(!(Window = UserGetWindowObject(hWnd)))
1541    {
1542       return 0;
1543    }
1544
1545    if(Window->MessageQueue != PsGetCurrentThreadWin32Thread()->MessageQueue)
1546    {
1547       Result = UserPostMessage(hWnd, Msg, wParam, lParam);
1548    }
1549    else
1550    {
1551       if(!co_IntSendMessageTimeoutSingle(hWnd, Msg, wParam, lParam, SMTO_NORMAL, 0, &Result))      {
1552          Result = 0;
1553       }
1554    }
1555
1556    return (LRESULT)Result;
1557 }
1558
1559 LRESULT FASTCALL
1560 co_IntDoSendMessage(HWND hWnd,
1561                     UINT Msg,
1562                     WPARAM wParam,
1563                     LPARAM lParam,
1564                     PDOSENDMESSAGE dsm,
1565                     PNTUSERSENDMESSAGEINFO UnsafeInfo)
1566 {
1567    LRESULT Result = TRUE;
1568    NTSTATUS Status;
1569    PWINDOW_OBJECT Window;
1570    NTUSERSENDMESSAGEINFO Info;
1571    MSG UserModeMsg;
1572    MSG KernelModeMsg;
1573    PMSGMEMORY MsgMemoryEntry;
1574
1575    RtlZeroMemory(&Info, sizeof(NTUSERSENDMESSAGEINFO));
1576
1577    /* FIXME: Call hooks. */
1578    if (HWND_BROADCAST != hWnd)
1579    {
1580       Window = UserGetWindowObject(hWnd);
1581       if (NULL == Window)
1582       {
1583          /* Tell usermode to not touch this one */
1584          Info.HandledByKernel = TRUE;
1585          MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERSENDMESSAGEINFO));
1586          return 0;
1587       }
1588       if (!Window->Wnd)
1589          return 0;
1590    }
1591
1592    /* FIXME: Check for an exiting window. */
1593
1594    /* See if the current thread can handle the message */
1595    if (HWND_BROADCAST != hWnd && NULL != PsGetCurrentThreadWin32Thread() &&
1596          Window->MessageQueue == PsGetCurrentThreadWin32Thread()->MessageQueue)
1597    {
1598       /* Gather the information usermode needs to call the window proc directly */
1599       Info.HandledByKernel = FALSE;
1600
1601       Status = MmCopyFromCaller(&(Info.Ansi), &(UnsafeInfo->Ansi),
1602                                 sizeof(BOOL));
1603       if (! NT_SUCCESS(Status))
1604       {
1605          Info.Ansi = ! Window->Wnd->Unicode;
1606       }
1607
1608       if (Window->Wnd->IsSystem)
1609       {
1610           Info.Proc = (!Info.Ansi ? Window->Wnd->WndProc : Window->Wnd->WndProcExtra);
1611       }
1612       else
1613       {
1614           Info.Ansi = !Window->Wnd->Unicode;
1615           Info.Proc = Window->Wnd->WndProc;
1616       }
1617    }
1618    else
1619    {
1620       /* Must be handled by other thread */
1621 //      if (HWND_BROADCAST != hWnd)
1622 //      {
1623 //         UserDereferenceObject(Window);
1624 //      }
1625       Info.HandledByKernel = TRUE;
1626       UserModeMsg.hwnd = hWnd;
1627       UserModeMsg.message = Msg;
1628       UserModeMsg.wParam = wParam;
1629       UserModeMsg.lParam = lParam;
1630       MsgMemoryEntry = FindMsgMemory(UserModeMsg.message);
1631       Status = CopyMsgToKernelMem(&KernelModeMsg, &UserModeMsg, MsgMemoryEntry);
1632       if (! NT_SUCCESS(Status))
1633       {
1634          MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERSENDMESSAGEINFO));
1635          SetLastWin32Error(ERROR_INVALID_PARAMETER);
1636          return (dsm ? 0 : -1);
1637       }
1638       if(!dsm)
1639       {
1640          Result = co_IntSendMessage(KernelModeMsg.hwnd, KernelModeMsg.message,
1641                                     KernelModeMsg.wParam, KernelModeMsg.lParam);
1642       }
1643       else
1644       {
1645          Result = co_IntSendMessageTimeout(KernelModeMsg.hwnd, KernelModeMsg.message,
1646                                            KernelModeMsg.wParam, KernelModeMsg.lParam,
1647                                            dsm->uFlags, dsm->uTimeout, &dsm->Result);
1648       }
1649       Status = CopyMsgToUserMem(&UserModeMsg, &KernelModeMsg);
1650       if (! NT_SUCCESS(Status))
1651       {
1652          MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERSENDMESSAGEINFO));
1653          SetLastWin32Error(ERROR_INVALID_PARAMETER);
1654          return(dsm ? 0 : -1);
1655       }
1656    }
1657
1658    Status = MmCopyToCaller(UnsafeInfo, &Info, sizeof(NTUSERSENDMESSAGEINFO));
1659    if (! NT_SUCCESS(Status))
1660    {
1661       SetLastWin32Error(ERROR_INVALID_PARAMETER);
1662    }
1663
1664    return (LRESULT)Result;
1665 }
1666
1667 LRESULT STDCALL
1668 NtUserSendMessageTimeout(HWND hWnd,
1669                          UINT Msg,
1670                          WPARAM wParam,
1671                          LPARAM lParam,
1672                          UINT uFlags,
1673                          UINT uTimeout,
1674                          ULONG_PTR *uResult,
1675                          PNTUSERSENDMESSAGEINFO UnsafeInfo)
1676 {
1677    DOSENDMESSAGE dsm;
1678    LRESULT Result;
1679    DECLARE_RETURN(BOOL);
1680
1681    DPRINT("Enter NtUserSendMessageTimeout\n");
1682    UserEnterExclusive();
1683
1684    dsm.uFlags = uFlags;
1685    dsm.uTimeout = uTimeout;
1686    Result = co_IntDoSendMessage(hWnd, Msg, wParam, lParam, &dsm, UnsafeInfo);
1687    if(uResult != NULL && Result != 0)
1688    {
1689       NTSTATUS Status;
1690
1691       Status = MmCopyToCaller(uResult, &dsm.Result, sizeof(ULONG_PTR));
1692       if(!NT_SUCCESS(Status))
1693       {
1694          SetLastWin32Error(ERROR_INVALID_PARAMETER);
1695          RETURN( FALSE);
1696       }
1697    }
1698    RETURN( Result);
1699
1700 CLEANUP:
1701    DPRINT("Leave NtUserSendMessageTimeout, ret=%i\n",_ret_);
1702    UserLeave();
1703    END_CLEANUP;
1704 }
1705
1706 LRESULT STDCALL
1707 NtUserSendMessage(HWND Wnd,
1708                   UINT Msg,
1709                   WPARAM wParam,
1710                   LPARAM lParam,
1711                   PNTUSERSENDMESSAGEINFO UnsafeInfo)
1712 {
1713    DECLARE_RETURN(BOOL);
1714
1715    DPRINT("Enter NtUserSendMessage\n");
1716    UserEnterExclusive();
1717
1718    RETURN(co_IntDoSendMessage(Wnd, Msg, wParam, lParam, NULL, UnsafeInfo));
1719
1720 CLEANUP:
1721    DPRINT("Leave NtUserSendMessage, ret=%i\n",_ret_);
1722    UserLeave();
1723    END_CLEANUP;
1724 }
1725
1726
1727 BOOL FASTCALL
1728 UserSendNotifyMessage(HWND hWnd,
1729                       UINT Msg,
1730                       WPARAM wParam,
1731                       LPARAM lParam)
1732 {
1733    BOOL Result = TRUE;
1734    // Basicly the same as IntPostOrSendMessage
1735    if (hWnd == HWND_BROADCAST) //Handle Broadcast
1736    {
1737       HWND *List;
1738       PWINDOW_OBJECT DesktopWindow;
1739       ULONG i;
1740
1741       DesktopWindow = UserGetWindowObject(IntGetDesktopWindow());
1742       List = IntWinListChildren(DesktopWindow);
1743
1744       if (List != NULL)
1745       {
1746          for (i = 0; List[i]; i++)
1747          {
1748             UserSendNotifyMessage(List[i], Msg, wParam, lParam);
1749          }
1750          ExFreePool(List);
1751       }
1752    }
1753    else
1754    {
1755      ULONG_PTR PResult;
1756      PWINDOW_OBJECT Window;
1757      NTSTATUS Status;
1758      MSG UserModeMsg;
1759      MSG KernelModeMsg;
1760      PMSGMEMORY MsgMemoryEntry;
1761
1762       if(!(Window = UserGetWindowObject(hWnd))) return FALSE;
1763
1764       if(Window->MessageQueue != PsGetCurrentThreadWin32Thread()->MessageQueue)
1765       { // Send message w/o waiting for it.
1766          Result = UserPostMessage(hWnd, Msg, wParam, lParam);
1767       }
1768       else
1769       { // Handle message and callback.
1770          UserModeMsg.hwnd = hWnd;
1771          UserModeMsg.message = Msg;
1772          UserModeMsg.wParam = wParam;
1773          UserModeMsg.lParam = lParam;
1774          MsgMemoryEntry = FindMsgMemory(UserModeMsg.message);
1775          Status = CopyMsgToKernelMem(&KernelModeMsg, &UserModeMsg, MsgMemoryEntry);
1776          if (! NT_SUCCESS(Status))
1777          {
1778             SetLastWin32Error(ERROR_INVALID_PARAMETER);
1779             return FALSE;
1780          }
1781          Result = co_IntSendMessageTimeoutSingle(
1782                                    KernelModeMsg.hwnd, KernelModeMsg.message,
1783                                    KernelModeMsg.wParam, KernelModeMsg.lParam,
1784                                    SMTO_NORMAL, 0, &PResult);
1785
1786          Status = CopyMsgToUserMem(&UserModeMsg, &KernelModeMsg);
1787          if (! NT_SUCCESS(Status))
1788          {
1789             SetLastWin32Error(ERROR_INVALID_PARAMETER);
1790             return FALSE;
1791          }
1792       }
1793    }
1794    return Result;
1795 }
1796
1797
1798 BOOL STDCALL
1799 NtUserSendNotifyMessage(HWND hWnd,
1800                         UINT Msg,
1801                         WPARAM wParam,
1802                         LPARAM lParam)
1803 {
1804    DECLARE_RETURN(BOOL);
1805
1806    DPRINT("EnterNtUserSendNotifyMessage\n");
1807    UserEnterExclusive();
1808
1809    RETURN(UserSendNotifyMessage(hWnd, Msg, wParam, lParam));
1810
1811 CLEANUP:
1812    DPRINT("Leave NtUserSendNotifyMessage, ret=%i\n",_ret_);
1813    UserLeave();
1814    END_CLEANUP;
1815
1816 }
1817
1818
1819 BOOL STDCALL
1820 NtUserWaitMessage(VOID)
1821 {
1822    DECLARE_RETURN(BOOL);
1823
1824    DPRINT("EnterNtUserWaitMessage\n");
1825    UserEnterExclusive();
1826
1827    RETURN(co_IntWaitMessage(NULL, 0, 0));
1828
1829 CLEANUP:
1830    DPRINT("Leave NtUserWaitMessage, ret=%i\n",_ret_);
1831    UserLeave();
1832    END_CLEANUP;
1833 }
1834
1835 DWORD STDCALL
1836 IntGetQueueStatus(BOOL ClearChanges)
1837 {
1838    PUSER_MESSAGE_QUEUE Queue;
1839    DWORD Result;
1840    DECLARE_RETURN(DWORD);
1841
1842    DPRINT("Enter IntGetQueueStatus\n");
1843
1844    Queue = PsGetCurrentThreadWin32Thread()->MessageQueue;
1845
1846    Result = MAKELONG(Queue->QueueBits, Queue->ChangedBits);
1847    if (ClearChanges)
1848    {
1849       Queue->ChangedBits = 0;
1850    }
1851
1852    RETURN(Result);
1853
1854 CLEANUP:
1855    DPRINT("Leave IntGetQueueStatus, ret=%i\n",_ret_);
1856    END_CLEANUP;
1857 }
1858
1859 BOOL STDCALL
1860 IntInitMessagePumpHook()
1861 {
1862    if (((PW32THREAD)PsGetCurrentThread()->Tcb.Win32Thread)->ThreadInfo)
1863    {
1864      ((PW32THREAD)PsGetCurrentThread()->Tcb.Win32Thread)->ThreadInfo->ClientThreadInfo.dwcPumpHook++;
1865      return TRUE;
1866    }
1867    return FALSE;
1868 }
1869
1870 BOOL STDCALL
1871 IntUninitMessagePumpHook()
1872 {
1873    if (((PW32THREAD)PsGetCurrentThread()->Tcb.Win32Thread)->ThreadInfo)
1874    {
1875       if (((PW32THREAD)PsGetCurrentThread()->Tcb.Win32Thread)->ThreadInfo->ClientThreadInfo.dwcPumpHook <= 0)
1876       {
1877          return FALSE;
1878       }
1879       ((PW32THREAD)PsGetCurrentThread()->Tcb.Win32Thread)->ThreadInfo->ClientThreadInfo.dwcPumpHook--;
1880       return TRUE;
1881    }
1882    return FALSE;
1883 }
1884
1885
1886 LRESULT STDCALL
1887 NtUserMessageCall(
1888    HWND hWnd,
1889    UINT Msg,
1890    WPARAM wParam,
1891    LPARAM lParam,
1892    ULONG_PTR ResultInfo,
1893    DWORD dwType, // fnID?
1894    BOOL Ansi)
1895 {
1896    LRESULT lResult = 0;
1897    PWINDOW_OBJECT Window = NULL;
1898    USER_REFERENCE_ENTRY Ref;
1899
1900    UserEnterExclusive();
1901
1902    /* Validate input */
1903    if (hWnd && (hWnd != INVALID_HANDLE_VALUE) && !(Window = UserGetWindowObject(hWnd)))
1904    {
1905       return 0;
1906    }
1907    switch(dwType)
1908    {
1909       case FNID_DEFWINDOWPROC:
1910          UserRefObjectCo(Window, &Ref);
1911          lResult = IntDefWindowProc(Window, Msg, wParam, lParam, Ansi);
1912          UserDerefObjectCo(Window);
1913       break;
1914       case FNID_BROADCASTSYSTEMMESSAGE:
1915       {
1916          PBROADCASTPARM parm;
1917          BOOL BadChk = FALSE;
1918          DWORD_PTR RetVal = 0;
1919          lResult = -1;
1920
1921          if (ResultInfo)
1922          {
1923             _SEH_TRY
1924             {
1925                ProbeForWrite((PVOID)ResultInfo,
1926                          sizeof(BROADCASTPARM),
1927                                              1);
1928                parm = (PBROADCASTPARM)ResultInfo;
1929             }
1930             _SEH_HANDLE
1931             {
1932                BadChk = TRUE;
1933             }
1934             _SEH_END;
1935             if (BadChk) break;
1936          }
1937          else
1938            break;
1939
1940          if ( parm->recipients & BSM_ALLDESKTOPS ||
1941               parm->recipients == BSM_ALLCOMPONENTS )
1942          {
1943          }
1944          else if (parm->recipients & BSM_APPLICATIONS)
1945          {
1946             if (parm->flags & BSF_QUERY)
1947             {
1948                if (parm->flags & BSF_FORCEIFHUNG || parm->flags & BSF_NOHANG)
1949                {
1950                   co_IntSendMessageTimeout( HWND_BROADCAST,
1951                                             Msg,
1952                                             wParam,
1953                                             lParam,
1954                                             SMTO_ABORTIFHUNG,
1955                                             2000,
1956                                             &RetVal);
1957                }
1958                else if (parm->flags & BSF_NOTIMEOUTIFNOTHUNG)
1959                {
1960 #define SMTO_NOTIMEOUTIFNOTHUNG  0x0008
1961                   co_IntSendMessageTimeout( HWND_BROADCAST,
1962                                             Msg,
1963                                             wParam,
1964                                             lParam,
1965                                             SMTO_NOTIMEOUTIFNOTHUNG,
1966                                             2000,
1967                                             &RetVal);
1968                }
1969                else
1970                {
1971                   co_IntSendMessageTimeout( HWND_BROADCAST,
1972                                             Msg,
1973                                             wParam,
1974                                             lParam,
1975                                             SMTO_NORMAL,
1976                                             2000,
1977                                             &RetVal);
1978                }
1979             }
1980             else if (parm->flags & BSF_POSTMESSAGE)
1981             {
1982                lResult = UserPostMessage(HWND_BROADCAST, Msg, wParam, lParam);
1983             }
1984             else if ( parm->flags & BSF_SENDNOTIFYMESSAGE)
1985             {
1986                lResult = UserSendNotifyMessage(HWND_BROADCAST, Msg, wParam, lParam);
1987             }
1988          }
1989       }
1990       break;
1991       case FNID_SENDMESSAGECALLBACK:
1992       break;
1993    }
1994    UserLeave();
1995    return lResult;
1996 }
1997
1998 #define INFINITE 0xFFFFFFFF
1999 #define WAIT_FAILED ((DWORD)0xFFFFFFFF)
2000
2001 DWORD
2002 NTAPI
2003 NtUserWaitForInputIdle(
2004    IN HANDLE hProcess,
2005    IN DWORD dwMilliseconds,
2006    IN BOOL Unknown2)
2007 {
2008   PEPROCESS Process;
2009   PW32PROCESS W32Process;
2010   NTSTATUS Status;
2011   HANDLE Handles[2];
2012   LARGE_INTEGER Timeout;
2013   ULONGLONG StartTime, Run, Elapsed = 0;
2014
2015   UserEnterExclusive();
2016
2017   Status = ObReferenceObjectByHandle(hProcess,
2018                                      PROCESS_QUERY_INFORMATION,
2019                                      PsProcessType,
2020                                      UserMode,
2021                                      (PVOID*)&Process,
2022                                      NULL);
2023
2024   if (!NT_SUCCESS(Status))
2025   {
2026      UserLeave();
2027      SetLastNtError(Status);
2028      return WAIT_FAILED;
2029   }
2030
2031   W32Process = (PW32PROCESS)Process->Win32Process;
2032   if (!W32Process)
2033   {
2034       ObDereferenceObject(Process);
2035       UserLeave();
2036       SetLastWin32Error(ERROR_INVALID_PARAMETER);
2037       return WAIT_FAILED;
2038   }
2039
2040   EngCreateEvent((PEVENT *)&W32Process->InputIdleEvent);
2041
2042   Handles[0] = Process;
2043   Handles[1] = W32Process->InputIdleEvent;
2044
2045   if (!Handles[1])
2046   {
2047       ObDereferenceObject(Process);
2048       UserLeave();
2049       return STATUS_SUCCESS;  /* no event to wait on */
2050   }
2051
2052   StartTime = ((ULONGLONG)SharedUserData->TickCountLowDeprecated *
2053                           SharedUserData->TickCountMultiplier / 16777216);
2054
2055   Run = dwMilliseconds;
2056
2057   DPRINT("WFII: waiting for %p\n", Handles[1] );
2058   do
2059   {
2060      Timeout.QuadPart = Run - Elapsed;
2061      UserLeave();
2062      Status = KeWaitForMultipleObjects( 2,
2063                                         Handles,
2064                                         WaitAny,
2065                                         UserRequest,
2066                                         UserMode,
2067                                         FALSE,
2068                              dwMilliseconds == INFINITE ? NULL : &Timeout,
2069                                         NULL);
2070      UserEnterExclusive();
2071
2072      if (!NT_SUCCESS(Status))
2073      {
2074         SetLastNtError(Status);
2075         Status = WAIT_FAILED;
2076         goto WaitExit;
2077      }
2078
2079      switch (Status)
2080      {
2081         case STATUS_WAIT_0:
2082            Status = WAIT_FAILED;
2083            goto WaitExit;
2084
2085         case STATUS_WAIT_2:
2086         {
2087            USER_MESSAGE Msg;
2088            co_IntPeekMessage( &Msg, 0, 0, 0, PM_REMOVE | PM_QS_SENDMESSAGE );
2089            break;
2090         }
2091
2092         case STATUS_USER_APC:
2093         case STATUS_ALERTED:
2094         case STATUS_TIMEOUT:
2095            DPRINT1("WFII: timeout\n");
2096            Status = STATUS_TIMEOUT;
2097            goto WaitExit;
2098
2099         default:
2100            DPRINT1("WFII: finished\n");
2101            Status = STATUS_SUCCESS;
2102            goto WaitExit;
2103      }
2104
2105      if (dwMilliseconds != INFINITE)
2106      {
2107         Elapsed = ((ULONGLONG)SharedUserData->TickCountLowDeprecated *
2108                               SharedUserData->TickCountMultiplier / 16777216)
2109                               - StartTime;
2110
2111         if (Elapsed > Run)
2112            Status = STATUS_TIMEOUT;
2113            break;
2114      }
2115   }
2116   while (1);
2117
2118 WaitExit:
2119   if (W32Process->InputIdleEvent)
2120   {
2121      EngDeleteEvent((PEVENT)W32Process->InputIdleEvent);
2122      W32Process->InputIdleEvent = NULL;
2123   }
2124   ObDereferenceObject(Process);
2125   UserLeave();
2126   return Status;
2127 }
2128
2129 /* EOF */