xref: /reactos/win32ss/user/ntuser/defwnd.c (revision 3a49e26f)
1 /*
2  * PROJECT:     ReactOS Win32k subsystem
3  * LICENSE:     See COPYING in the top level directory
4  * PURPOSE:     Miscellaneous User functions
5  * COPYRIGHT:   2008-2020 James Tabor <james.tabor@reactos.org>
6  */
7 
8 #include <win32k.h>
9 #include <windowsx.h>
10 
11 DBG_DEFAULT_CHANNEL(UserDefwnd);
12 
13 INT WINAPI DrawTextExWorker( HDC hdc, LPWSTR str, INT i_count,
14                         LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp );
15 
16 INT WINAPI DrawTextW( HDC hdc, LPCWSTR str, INT count, LPRECT rect, UINT flags )
17 {
18     DRAWTEXTPARAMS dtp;
19 
20     memset (&dtp, 0, sizeof(dtp));
21     dtp.cbSize = sizeof(dtp);
22     if (flags & DT_TABSTOP)
23     {
24         dtp.iTabLength = (flags >> 8) & 0xff;
25         flags &= 0xffff00ff;
26     }
27     return DrawTextExWorker(hdc, (LPWSTR)str, count, rect, flags, &dtp);
28 }
29 
30 
31 HBRUSH FASTCALL
32 DefWndControlColor(HDC hDC, UINT ctlType)
33 {
34   if (ctlType == CTLCOLOR_SCROLLBAR)
35   {
36       HBRUSH hb = IntGetSysColorBrush(COLOR_SCROLLBAR);
37       COLORREF bk = IntGetSysColor(COLOR_3DHILIGHT);
38       IntGdiSetTextColor(hDC, IntGetSysColor(COLOR_3DFACE));
39       IntGdiSetBkColor(hDC, bk);
40 
41       /* if COLOR_WINDOW happens to be the same as COLOR_3DHILIGHT
42        * we better use 0x55aa bitmap brush to make scrollbar's background
43        * look different from the window background.
44        */
45       if ( bk == IntGetSysColor(COLOR_WINDOW))
46           return gpsi->hbrGray;
47 
48       NtGdiUnrealizeObject( hb );
49       return hb;
50   }
51 
52   IntGdiSetTextColor(hDC, IntGetSysColor(COLOR_WINDOWTEXT));
53 
54   if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
55   {
56       IntGdiSetBkColor(hDC, IntGetSysColor(COLOR_WINDOW));
57   }
58   else
59   {
60       IntGdiSetBkColor(hDC, IntGetSysColor(COLOR_3DFACE));
61       return IntGetSysColorBrush(COLOR_3DFACE);
62   }
63 
64   return IntGetSysColorBrush(COLOR_WINDOW);
65 }
66 
67 LRESULT FASTCALL
68 DefWndHandleWindowPosChanging(PWND pWnd, WINDOWPOS* Pos)
69 {
70     POINT maxTrack, minTrack;
71     LONG style = pWnd->style;
72 
73     if (Pos->flags & SWP_NOSIZE) return 0;
74     if ((style & WS_THICKFRAME) || ((style & (WS_POPUP | WS_CHILD)) == 0))
75     {
76         co_WinPosGetMinMaxInfo(pWnd, NULL, NULL, &minTrack, &maxTrack);
77         Pos->cx = min(Pos->cx, maxTrack.x);
78         Pos->cy = min(Pos->cy, maxTrack.y);
79         if (!(style & WS_MINIMIZE))
80         {
81             if (Pos->cx < minTrack.x) Pos->cx = minTrack.x;
82             if (Pos->cy < minTrack.y) Pos->cy = minTrack.y;
83         }
84     }
85     else
86     {
87         Pos->cx = max(Pos->cx, 0);
88         Pos->cy = max(Pos->cy, 0);
89     }
90     return 0;
91 }
92 
93 /* Win: xxxHandleWindowPosChanged */
94 LRESULT FASTCALL
95 DefWndHandleWindowPosChanged(PWND pWnd, WINDOWPOS* Pos)
96 {
97    RECT Rect;
98    LONG style = pWnd->style;
99 
100    IntGetClientRect(pWnd, &Rect);
101    IntMapWindowPoints(pWnd, (style & WS_CHILD ? IntGetParent(pWnd) : NULL), (LPPOINT) &Rect, 2);
102 
103    if (!(Pos->flags & SWP_NOCLIENTMOVE))
104    {
105       co_IntSendMessage(UserHMGetHandle(pWnd), WM_MOVE, 0, MAKELONG(Rect.left, Rect.top));
106    }
107 
108    if (!(Pos->flags & SWP_NOCLIENTSIZE) || (Pos->flags & SWP_STATECHANGED))
109    {
110       if (style & WS_MINIMIZE) co_IntSendMessage(UserHMGetHandle(pWnd), WM_SIZE, SIZE_MINIMIZED, 0 );
111       else
112       {
113          WPARAM wp = (style & WS_MAXIMIZE) ? SIZE_MAXIMIZED : SIZE_RESTORED;
114          co_IntSendMessage(UserHMGetHandle(pWnd), WM_SIZE, wp, MAKELONG(Rect.right - Rect.left, Rect.bottom - Rect.top));
115       }
116    }
117    return 0;
118 }
119 
120 //
121 // Handle a WM_SYSCOMMAND message. Called from DefWindowProc().
122 //
123 // Win: xxxSysCommand
124 LRESULT FASTCALL
125 DefWndHandleSysCommand(PWND pWnd, WPARAM wParam, LPARAM lParam)
126 {
127    LRESULT lResult = 0;
128    BOOL Hook = FALSE;
129 
130    if (ISITHOOKED(WH_CBT) || (pWnd->head.rpdesk->pDeskInfo->fsHooks & HOOKID_TO_FLAG(WH_CBT)))
131    {
132       Hook = TRUE;
133       lResult = co_HOOK_CallHooks(WH_CBT, HCBT_SYSCOMMAND, wParam, lParam);
134 
135       if (lResult) return lResult;
136    }
137 
138    switch (wParam & 0xfff0)
139    {
140       case SC_MOVE:
141       case SC_SIZE:
142         DefWndDoSizeMove(pWnd, wParam);
143         break;
144 
145       case SC_MINIMIZE:
146         if (UserHMGetHandle(pWnd) == UserGetActiveWindow())
147             IntShowOwnedPopups(pWnd,FALSE); // This is done in ShowWindow! Need to retest!
148         co_WinPosShowWindow( pWnd, SW_MINIMIZE );
149         break;
150 
151       case SC_MAXIMIZE:
152         if (((pWnd->style & WS_MINIMIZE) != 0) && UserHMGetHandle(pWnd) == UserGetActiveWindow())
153             IntShowOwnedPopups(pWnd,TRUE);
154         co_WinPosShowWindow( pWnd, SW_MAXIMIZE );
155         break;
156 
157       case SC_RESTORE:
158         if (((pWnd->style & WS_MINIMIZE) != 0) && UserHMGetHandle(pWnd) == UserGetActiveWindow())
159             IntShowOwnedPopups(pWnd,TRUE);
160         co_WinPosShowWindow( pWnd, SW_RESTORE );
161         break;
162 
163       case SC_CLOSE:
164         return co_IntSendMessage(UserHMGetHandle(pWnd), WM_CLOSE, 0, 0);
165 
166       case SC_SCREENSAVE:
167         ERR("Screensaver Called!\n");
168         UserPostMessage(hwndSAS, WM_LOGONNOTIFY, LN_START_SCREENSAVE, 0); // always lParam 0 == not Secure
169         break;
170 
171       case SC_HOTKEY:
172         {
173            USER_REFERENCE_ENTRY Ref;
174 
175            pWnd = ValidateHwndNoErr((HWND)lParam);
176            if (pWnd)
177            {
178               if (pWnd->spwndLastActive)
179               {
180                  pWnd = pWnd->spwndLastActive;
181               }
182               UserRefObjectCo(pWnd, &Ref);
183               co_IntSetForegroundWindow(pWnd);
184               UserDerefObjectCo(pWnd);
185               if (pWnd->style & WS_MINIMIZE)
186               {
187                  UserPostMessage(UserHMGetHandle(pWnd), WM_SYSCOMMAND, SC_RESTORE, 0);
188               }
189            }
190         }
191         break;
192 //      case SC_DEFAULT:
193       case SC_MOUSEMENU:
194         {
195           POINT Pt;
196           Pt.x = (short)LOWORD(lParam);
197           Pt.y = (short)HIWORD(lParam);
198           MENU_TrackMouseMenuBar(pWnd, wParam & 0x000f, Pt);
199         }
200 	break;
201 
202       case SC_KEYMENU:
203         MENU_TrackKbdMenuBar(pWnd, wParam, (WCHAR)lParam);
204 	break;
205 
206 
207       default:
208    // We do not support anything else here so we should return normal even when sending a hook.
209         return 0;
210    }
211 
212    return(Hook ? 1 : 0); // Don't call us again from user space.
213 }
214 
215 PWND FASTCALL
216 co_IntFindChildWindowToOwner(PWND Root, PWND Owner)
217 {
218    PWND Ret;
219    PWND Child, OwnerWnd;
220 
221    for(Child = Root->spwndChild; Child; Child = Child->spwndNext)
222    {
223       OwnerWnd = Child->spwndOwner;
224       if(!OwnerWnd)
225          continue;
226 
227       if (!(Child->style & WS_POPUP) ||
228           !(Child->style & WS_VISIBLE) ||
229           /* Fixes CMD pop up properties window from having foreground. */
230            Owner->head.pti->MessageQueue != Child->head.pti->MessageQueue)
231          continue;
232 
233       if(OwnerWnd == Owner)
234       {
235          Ret = Child;
236          return Ret;
237       }
238    }
239    return NULL;
240 }
241 
242 LRESULT
243 DefWndHandleSetCursor(PWND pWnd, WPARAM wParam, LPARAM lParam)
244 {
245    PWND pwndPopUP = NULL;
246    WORD Msg = HIWORD(lParam);
247 
248    /* Not for child windows. */
249    if (UserHMGetHandle(pWnd) != (HWND)wParam)
250    {
251       return FALSE;
252    }
253 
254    switch((short)LOWORD(lParam))
255    {
256       case HTERROR:
257       {
258          //// This is the real fix for CORE-6129! This was a "Code hole".
259          USER_REFERENCE_ENTRY Ref;
260 
261          if (Msg == WM_LBUTTONDOWN)
262          {
263             // Find a pop up window to bring active.
264             pwndPopUP = co_IntFindChildWindowToOwner(UserGetDesktopWindow(), pWnd);
265             if (pwndPopUP)
266             {
267                // Not a child pop up from desktop.
268                if ( pwndPopUP != UserGetDesktopWindow()->spwndChild )
269                {
270                   // Get original active window.
271                   PWND pwndOrigActive = gpqForeground->spwndActive;
272 
273                   co_WinPosSetWindowPos(pWnd, NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
274 
275                   UserRefObjectCo(pwndPopUP, &Ref);
276                   //UserSetActiveWindow(pwndPopUP);
277                   co_IntSetForegroundWindow(pwndPopUP); // HACK
278                   UserDerefObjectCo(pwndPopUP);
279 
280                   // If the change was made, break out.
281                   if (pwndOrigActive != gpqForeground->spwndActive)
282                      break;
283                }
284             }
285          }
286          ////
287 	 if (Msg == WM_LBUTTONDOWN || Msg == WM_MBUTTONDOWN ||
288 	     Msg == WM_RBUTTONDOWN || Msg == WM_XBUTTONDOWN)
289 	 {
290              if (pwndPopUP)
291              {
292                  FLASHWINFO fwi =
293                     {sizeof(FLASHWINFO),
294                      UserHMGetHandle(pwndPopUP),
295                      FLASHW_ALL,
296                      gspv.dwForegroundFlashCount,
297                      (gpsi->dtCaretBlink >> 3)};
298 
299                  // Now shake that window!
300                  IntFlashWindowEx(pwndPopUP, &fwi);
301              }
302 	     UserPostMessage(hwndSAS, WM_LOGONNOTIFY, LN_MESSAGE_BEEP, 0);
303 	 }
304 	 break;
305       }
306 
307       case HTCLIENT:
308       {
309          if (pWnd->pcls->spcur)
310          {
311             IntSystemSetCursor(pWnd->pcls->spcur);
312 	 }
313 	 return FALSE;
314       }
315 
316       case HTLEFT:
317       case HTRIGHT:
318       {
319          if (pWnd->style & WS_MAXIMIZE)
320          {
321             break;
322          }
323          IntSystemSetCursor(SYSTEMCUR(SIZEWE));
324          return TRUE;
325       }
326 
327       case HTTOP:
328       case HTBOTTOM:
329       {
330          if (pWnd->style & WS_MAXIMIZE)
331          {
332             break;
333          }
334          IntSystemSetCursor(SYSTEMCUR(SIZENS));
335          return TRUE;
336        }
337 
338        case HTTOPLEFT:
339        case HTBOTTOMRIGHT:
340        {
341          if (pWnd->style & WS_MAXIMIZE)
342          {
343             break;
344          }
345          IntSystemSetCursor(SYSTEMCUR(SIZENWSE));
346          return TRUE;
347        }
348 
349        case HTBOTTOMLEFT:
350        case HTTOPRIGHT:
351        {
352          if (pWnd->style & WS_MAXIMIZE)
353          {
354             break;
355          }
356          IntSystemSetCursor(SYSTEMCUR(SIZENESW));
357          return TRUE;
358        }
359    }
360    IntSystemSetCursor(SYSTEMCUR(ARROW));
361    return FALSE;
362 }
363 
364 /* Win: xxxDWPPrint */
365 VOID FASTCALL DefWndPrint( PWND pwnd, HDC hdc, ULONG uFlags)
366 {
367   /*
368    * Visibility flag.
369    */
370   if ( (uFlags & PRF_CHECKVISIBLE) &&
371        !IntIsWindowVisible(pwnd) )
372       return;
373 
374   /*
375    * Unimplemented flags.
376    */
377   if ( (uFlags & PRF_CHILDREN) ||
378        (uFlags & PRF_OWNED)    ||
379        (uFlags & PRF_NONCLIENT) )
380   {
381     FIXME("WM_PRINT message with unsupported flags\n");
382   }
383 
384   /*
385    * Background
386    */
387   if ( uFlags & PRF_ERASEBKGND)
388     co_IntSendMessage(UserHMGetHandle(pwnd), WM_ERASEBKGND, (WPARAM)hdc, 0);
389 
390   /*
391    * Client area
392    */
393   if ( uFlags & PRF_CLIENT)
394     co_IntSendMessage(UserHMGetHandle(pwnd), WM_PRINTCLIENT, (WPARAM)hdc, uFlags);
395 }
396 
397 BOOL
398 UserPaintCaption(PWND pWnd, INT Flags)
399 {
400   BOOL Ret = FALSE;
401 
402   if ( (pWnd->style & WS_VISIBLE) && ((pWnd->style & WS_CAPTION) == WS_CAPTION) )
403   {
404       if (pWnd->state & WNDS_HASCAPTION && pWnd->head.pti->MessageQueue == gpqForeground)
405          Flags |= DC_ACTIVE;
406     /*
407      * When themes are not enabled we can go on and paint the non client area.
408      * However if we do that with themes enabled we will draw a classic frame.
409      * This is solved by sending a themes specific message to notify the themes
410      * engine that the caption needs to be redrawn.
411      */
412       if (gpsi->dwSRVIFlags & SRVINFO_APIHOOK)
413       {
414         /*
415          * This will cause uxtheme to either paint the themed caption or call
416          * RealUserDrawCaption in order to draw the classic caption when themes
417          * are disabled but the themes service is enabled.
418          */
419          TRACE("UDCB Flags %08x\n", Flags);
420          co_IntSendMessage(UserHMGetHandle(pWnd), WM_NCUAHDRAWCAPTION, Flags, 0);
421       }
422       else
423       {
424          HDC hDC = UserGetDCEx(pWnd, NULL, DCX_WINDOW|DCX_USESTYLE);
425          UserDrawCaptionBar(pWnd, hDC, Flags | DC_FRAME); // DCFRAME added as fix for CORE-10855.
426          UserReleaseDC(pWnd, hDC, FALSE);
427       }
428       Ret = TRUE;
429    }
430    // Support window tray
431    return Ret;
432 }
433 
434 // WM_SETICON
435 /* Win: xxxDWP_SetIcon */
436 LRESULT FASTCALL
437 DefWndSetIcon(PWND pWnd, WPARAM wParam, LPARAM lParam)
438 {
439     HICON hIcon, hIconSmall, hIconOld;
440 
441     if ( wParam > ICON_SMALL2 )
442     {
443         EngSetLastError(ERROR_INVALID_PARAMETER);
444         return 0;
445     }
446     hIconSmall = UserGetProp(pWnd, gpsi->atomIconSmProp, TRUE);
447     hIcon      = UserGetProp(pWnd, gpsi->atomIconProp, TRUE);
448 
449     hIconOld = wParam == ICON_BIG ? hIcon : hIconSmall;
450 
451     switch(wParam)
452     {
453         case ICON_BIG:
454             hIcon = (HICON)lParam;
455             break;
456         case ICON_SMALL:
457             hIconSmall = (HICON)lParam;
458             break;
459         case ICON_SMALL2:
460             ERR("FIXME: Set ICON_SMALL2 support!\n");
461         default:
462             break;
463     }
464 
465     UserSetProp(pWnd, gpsi->atomIconProp, hIcon, TRUE);
466     UserSetProp(pWnd, gpsi->atomIconSmProp, hIconSmall, TRUE);
467 
468     if ((pWnd->style & WS_CAPTION ) == WS_CAPTION)
469        UserPaintCaption(pWnd, DC_ICON);
470 
471     return (LRESULT)hIconOld;
472 }
473 
474 /* Win: DWP_GetIcon */
475 LRESULT FASTCALL
476 DefWndGetIcon(PWND pWnd, WPARAM wParam, LPARAM lParam)
477 {
478     HICON hIconRet;
479     if ( wParam > ICON_SMALL2 )
480     {
481         EngSetLastError(ERROR_INVALID_PARAMETER);
482         return 0;
483     }
484     switch(wParam)
485     {
486         case ICON_BIG:
487             hIconRet = UserGetProp(pWnd, gpsi->atomIconProp, TRUE);
488             break;
489         case ICON_SMALL:
490         case ICON_SMALL2:
491             hIconRet = UserGetProp(pWnd, gpsi->atomIconSmProp, TRUE);
492             break;
493         DEFAULT_UNREACHABLE;
494     }
495     return (LRESULT)hIconRet;
496 }
497 
498 VOID FASTCALL
499 DefWndScreenshot(PWND pWnd)
500 {
501     RECT rect;
502     HDC hdc;
503     INT w;
504     INT h;
505     HBITMAP hbitmap;
506     HDC hdc2;
507     SETCLIPBDATA scd = {FALSE, FALSE};
508 
509     UserOpenClipboard(UserHMGetHandle(pWnd));
510     UserEmptyClipboard();
511 
512     hdc = UserGetWindowDC(pWnd);
513     IntGetWindowRect(pWnd, &rect);
514     w = rect.right - rect.left;
515     h = rect.bottom - rect.top;
516 
517     hbitmap = NtGdiCreateCompatibleBitmap(hdc, w, h);
518     hdc2 = NtGdiCreateCompatibleDC(hdc);
519     NtGdiSelectBitmap(hdc2, hbitmap);
520 
521     NtGdiBitBlt(hdc2, 0, 0, w, h, hdc, 0, 0, SRCCOPY, 0, 0);
522 
523     UserSetClipboardData(CF_BITMAP, hbitmap, &scd);
524 
525     UserReleaseDC(pWnd, hdc, FALSE);
526     UserReleaseDC(pWnd, hdc2, FALSE);
527 
528     UserCloseClipboard();
529 }
530 
531 /*
532    Win32k counterpart of User DefWindowProc
533  */
534 LRESULT FASTCALL
535 IntDefWindowProc(
536    PWND Wnd,
537    UINT Msg,
538    WPARAM wParam,
539    LPARAM lParam,
540    BOOL Ansi)
541 {
542    PTHREADINFO pti = PsGetCurrentThreadWin32Thread();
543    LRESULT lResult = 0;
544    USER_REFERENCE_ENTRY Ref;
545 
546    if (Msg > WM_USER) return 0;
547 
548    switch (Msg)
549    {
550       case WM_DEVICECHANGE:
551             return TRUE;
552 
553       case WM_GETTEXTLENGTH:
554       {
555             PWSTR buf;
556             ULONG len;
557 
558             if (Wnd != NULL && Wnd->strName.Length != 0)
559             {
560                 buf = Wnd->strName.Buffer;
561                 if (buf != NULL &&
562                     NT_SUCCESS(RtlUnicodeToMultiByteSize(&len,
563                                                          buf,
564                                                          Wnd->strName.Length)))
565                 {
566                     lResult = (LRESULT) (Wnd->strName.Length / sizeof(WCHAR));
567                 }
568             }
569             else lResult = 0L;
570 
571             break;
572       }
573 
574       case WM_GETTEXT: // FIXME: Handle Ansi
575       {
576             PWSTR buf = NULL;
577             PWSTR outbuf = (PWSTR)lParam;
578 
579             if (Wnd != NULL && wParam != 0)
580             {
581                 if (Wnd->strName.Buffer != NULL)
582                     buf = Wnd->strName.Buffer;
583                 else
584                     outbuf[0] = L'\0';
585 
586                 if (buf != NULL)
587                 {
588                     if (Wnd->strName.Length != 0)
589                     {
590                         lResult = min(Wnd->strName.Length / sizeof(WCHAR), wParam - 1);
591                         RtlCopyMemory(outbuf,
592                                       buf,
593                                       lResult * sizeof(WCHAR));
594                         outbuf[lResult] = L'\0';
595                     }
596                     else
597                         outbuf[0] = L'\0';
598                 }
599             }
600             break;
601       }
602 
603       case WM_SETTEXT: // FIXME: Handle Ansi
604       {
605             DefSetText(Wnd, (PCWSTR)lParam);
606 
607             if ((Wnd->style & WS_CAPTION) == WS_CAPTION)
608                 UserPaintCaption(Wnd, DC_TEXT);
609             IntNotifyWinEvent(EVENT_OBJECT_NAMECHANGE, Wnd, OBJID_WINDOW, CHILDID_SELF, 0);
610             lResult = 1;
611             break;
612       }
613 
614       case WM_SYSCOMMAND:
615       {
616          TRACE("hwnd %p WM_SYSCOMMAND %lx %lx\n", UserHMGetHandle(Wnd), wParam, lParam );
617          lResult = DefWndHandleSysCommand(Wnd, wParam, lParam);
618          break;
619       }
620 
621       case WM_SHOWWINDOW:
622       {
623          if ((Wnd->style & WS_VISIBLE) && wParam) break;
624          if (!(Wnd->style & WS_VISIBLE) && !wParam) break;
625          if (!Wnd->spwndOwner) break;
626          if (LOWORD(lParam))
627          {
628             co_WinPosShowWindow(Wnd, wParam ? SW_SHOWNOACTIVATE : SW_HIDE);
629          }
630          break;
631       }
632 
633       case WM_CLIENTSHUTDOWN:
634          return IntClientShutdown(Wnd, wParam, lParam);
635 
636       case WM_APPCOMMAND:
637          if ( (Wnd->style & (WS_POPUP|WS_CHILD)) != WS_CHILD &&
638                Wnd != co_GetDesktopWindow(Wnd) )
639          {
640             if (!co_HOOK_CallHooks(WH_SHELL, HSHELL_APPCOMMAND, wParam, lParam))
641                co_IntShellHookNotify(HSHELL_APPCOMMAND, wParam, lParam);
642             break;
643          }
644          UserRefObjectCo(Wnd->spwndParent, &Ref);
645          lResult = co_IntSendMessage(UserHMGetHandle(Wnd->spwndParent), WM_APPCOMMAND, wParam, lParam);
646          UserDerefObjectCo(Wnd->spwndParent);
647          break;
648 
649       case WM_KEYF1:
650       {
651          HELPINFO hi;
652          HMENU hMenu = UlongToHandle(Wnd->IDMenu);
653          PWND pwndActive = MENU_IsMenuActive();
654          hi.cbSize = sizeof(HELPINFO);
655          hi.MousePos = gpsi->ptCursor;
656          hi.iContextType = HELPINFO_MENUITEM;
657          hi.hItemHandle = pwndActive ? UserHMGetHandle(pwndActive) : UserHMGetHandle(Wnd);
658          hi.iCtrlId = (Wnd->style & (WS_POPUP|WS_CHILD)) == WS_CHILD ? IntMenuItemFromPoint(Wnd, hMenu, hi.MousePos) : 0;
659          hi.dwContextId = IntGetWindowContextHelpId(Wnd);
660 
661          co_IntSendMessage( UserHMGetHandle(Wnd), WM_HELP, 0, (LPARAM)&hi );
662          break;
663       }
664 
665       case WM_SETICON:
666       {
667          return DefWndSetIcon(Wnd, wParam, lParam);
668       }
669 
670       case WM_GETICON:
671       {
672          return DefWndGetIcon(Wnd, wParam, lParam);
673       }
674 
675       case WM_HELP:
676       {
677          PWND Parent = IntGetParent(Wnd);
678          co_IntSendMessage(UserHMGetHandle(Parent), Msg, wParam, lParam);
679          break;
680       }
681 
682       case WM_LBUTTONDOWN:
683       case WM_RBUTTONDOWN:
684       case WM_MBUTTONDOWN:
685           pti->MessageQueue->QF_flags &= ~(QF_FMENUSTATUS|QF_FMENUSTATUSBREAK);
686           break;
687 
688       case WM_NCLBUTTONDOWN:
689           return NC_HandleNCLButtonDown(Wnd, wParam, lParam);
690 
691       case WM_NCRBUTTONDOWN:
692           return NC_HandleNCRButtonDown(Wnd, wParam, lParam);
693 
694       case WM_LBUTTONDBLCLK:
695           return NC_HandleNCLButtonDblClk(Wnd, HTCLIENT, lParam);
696 
697       case WM_NCLBUTTONDBLCLK:
698           return NC_HandleNCLButtonDblClk(Wnd, wParam, lParam);
699 
700       case WM_RBUTTONUP:
701       {
702             POINT Pt;
703 
704             Pt.x = GET_X_LPARAM(lParam);
705             Pt.y = GET_Y_LPARAM(lParam);
706             IntClientToScreen(Wnd, &Pt);
707             lParam = MAKELPARAM(Pt.x, Pt.y);
708             co_IntSendMessage(UserHMGetHandle(Wnd), WM_CONTEXTMENU, (WPARAM)UserHMGetHandle(Wnd), lParam);
709             break;
710       }
711 
712       case WM_NCRBUTTONUP:
713           /*
714            * FIXME : we must NOT send WM_CONTEXTMENU on a WM_NCRBUTTONUP (checked
715            * in Windows), but what _should_ we do? According to MSDN :
716            * "If it is appropriate to do so, the system sends the WM_SYSCOMMAND
717            * message to the window". When is it appropriate?
718            */
719            ERR("WM_NCRBUTTONUP\n");
720           break;
721 
722       case WM_XBUTTONUP:
723       case WM_NCXBUTTONUP:
724           if (HIWORD(wParam) == XBUTTON1 || HIWORD(wParam) == XBUTTON2)
725           {
726               co_IntSendMessage(UserHMGetHandle(Wnd), WM_APPCOMMAND, (WPARAM)UserHMGetHandle(Wnd),
727                                 MAKELPARAM(LOWORD(wParam), FAPPCOMMAND_MOUSE | HIWORD(wParam)));
728           }
729           break;
730 
731 
732       case WM_CONTEXTMENU:
733       {
734             if (Wnd->style & WS_CHILD)
735             {
736                 co_IntSendMessage(UserHMGetHandle(IntGetParent(Wnd)), Msg, (WPARAM)UserHMGetHandle(Wnd), lParam);
737             }
738             else
739             {
740                 POINT Pt;
741                 LONG_PTR Style;
742                 LONG HitCode;
743 
744                 Style = Wnd->style;
745 
746                 Pt.x = GET_X_LPARAM(lParam);
747                 Pt.y = GET_Y_LPARAM(lParam);
748                 if (Style & WS_CHILD)
749                 {
750                     IntScreenToClient(IntGetParent(Wnd), &Pt);
751                 }
752 
753                 HitCode = GetNCHitEx(Wnd, Pt);
754 
755                 if (HitCode == HTCAPTION || HitCode == HTSYSMENU)
756                 {
757                     PMENU SystemMenu;
758                     UINT Flags;
759 
760                     if((SystemMenu = IntGetSystemMenu(Wnd, FALSE)))
761                     {
762                       MENU_InitSysMenuPopup(SystemMenu, Wnd->style, Wnd->pcls->style, HitCode);
763 
764                       if(HitCode == HTCAPTION)
765                         Flags = TPM_LEFTBUTTON | TPM_RIGHTBUTTON;
766                       else
767                         Flags = TPM_LEFTBUTTON;
768 
769                       IntTrackPopupMenuEx(SystemMenu, Flags|TPM_SYSTEM_MENU, Pt.x, Pt.y, Wnd, NULL);
770                     }
771                 }
772                 if (HitCode == HTHSCROLL || HitCode == HTVSCROLL)
773                 {
774                    WARN("Scroll Menu Not Supported\n");
775                 }
776 	    }
777             break;
778       }
779 
780       case WM_KEYDOWN:
781          if (wParam == VK_F10)
782          {
783             pti->MessageQueue->QF_flags |= QF_FF10STATUS;
784 
785             if (UserGetKeyState(VK_SHIFT) & 0x8000)
786             {
787                co_IntSendMessage(UserHMGetHandle(Wnd), WM_CONTEXTMENU, (WPARAM)UserHMGetHandle(Wnd), MAKELPARAM(-1, -1));
788             }
789          }
790          if (g_bWindowSnapEnabled && (IS_KEY_DOWN(gafAsyncKeyState, VK_LWIN) || IS_KEY_DOWN(gafAsyncKeyState, VK_RWIN)))
791          {
792             BOOL IsTaskBar;
793             DWORD StyleTB;
794             DWORD ExStyleTB;
795             HWND hwndTop = UserGetForegroundWindow();
796             PWND topWnd = UserGetWindowObject(hwndTop);
797 
798             // MS Doc: foreground window can be NULL, e.g. when window is losing activation
799             if (!topWnd)
800                return 0;
801 
802             // We want to forbid snapping operations on the TaskBar
803             // We use a heuristic for detecting the TaskBar Wnd by its typical Style & ExStyle Values
804             ExStyleTB = (topWnd->ExStyle & WS_EX_TOOLWINDOW);
805             StyleTB = (topWnd->style & (WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN));
806             IsTaskBar = (StyleTB == (WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN))
807                         && (ExStyleTB == WS_EX_TOOLWINDOW);
808             TRACE("ExStyle=%x Style=%x IsTaskBar=%d\n", ExStyleTB, StyleTB, IsTaskBar);
809 
810             if (!IsTaskBar)
811             {
812                if ((topWnd->style & WS_THICKFRAME) == 0)
813                   return 0;
814 
815                if (wParam == VK_DOWN)
816                {
817                    if (topWnd->style & WS_MAXIMIZE)
818                    {
819                        co_IntSendMessage(hwndTop, WM_SYSCOMMAND, SC_RESTORE, lParam);
820 
821                        /* "Normal size" must be erased after restoring, otherwise it will block next side snap actions */
822                        RECTL_vSetEmptyRect(&topWnd->InternalPos.NormalRect);
823                    }
824                    else
825                    {
826                        co_IntSendMessage(hwndTop, WM_SYSCOMMAND, SC_MINIMIZE, lParam);
827                    }
828                }
829                else if (wParam == VK_UP)
830                {
831                   RECT currentRect;
832                   if ((topWnd->InternalPos.NormalRect.right == topWnd->InternalPos.NormalRect.left) ||
833                       (topWnd->InternalPos.NormalRect.top == topWnd->InternalPos.NormalRect.bottom))
834                   {
835                       currentRect = topWnd->rcWindow;
836                   }
837                   else
838                   {
839                       currentRect = topWnd->InternalPos.NormalRect;
840                   }
841                   co_IntSendMessage(hwndTop, WM_SYSCOMMAND, SC_MAXIMIZE, 0);
842 
843                   // save normal rect if maximazing snapped window
844                   topWnd->InternalPos.NormalRect = currentRect;
845                }
846                else if (wParam == VK_LEFT || wParam == VK_RIGHT)
847                {
848                   RECT snapRect, normalRect, windowRect;
849                   BOOL snapped;
850                   normalRect = topWnd->InternalPos.NormalRect;
851                   snapped = (normalRect.left != 0 && normalRect.right != 0 &&
852                              normalRect.top != 0 && normalRect.bottom != 0);
853 
854                   if (topWnd->style & WS_MAXIMIZE)
855                   {
856                      co_IntSendMessage(hwndTop, WM_SYSCOMMAND, SC_RESTORE, lParam);
857                      snapped = FALSE;
858                   }
859                   windowRect = topWnd->rcWindow;
860 
861                   UserSystemParametersInfo(SPI_GETWORKAREA, 0, &snapRect, 0);
862                   if (wParam == VK_LEFT)
863                   {
864                      snapRect.right = (snapRect.left + snapRect.right) / 2;
865                   }
866                   else // VK_RIGHT
867                   {
868                      snapRect.left = (snapRect.left + snapRect.right) / 2;
869                   }
870 
871                   if (snapped)
872                   {
873                      // if window was snapped but moved to other location - restore normal size
874                      if (!IntEqualRect(&snapRect, &windowRect))
875                      {
876                         RECT empty = {0, 0, 0, 0};
877                         co_WinPosSetWindowPos(topWnd,
878                                               0,
879                                               normalRect.left,
880                                               normalRect.top,
881                                               normalRect.right - normalRect.left,
882                                               normalRect.bottom - normalRect.top,
883                                               0);
884                         topWnd->InternalPos.NormalRect = empty;
885                      }
886                   }
887                   else
888                   {
889                      co_WinPosSetWindowPos(topWnd,
890                                            0,
891                                            snapRect.left,
892                                            snapRect.top,
893                                            snapRect.right - snapRect.left,
894                                            snapRect.bottom - snapRect.top,
895                                            0);
896                      topWnd->InternalPos.NormalRect = windowRect;
897                   }
898                }
899             }
900          }
901          break;
902 
903       case WM_SYSKEYDOWN:
904       {
905             if (HIWORD(lParam) & KF_ALTDOWN)
906             {   /* Previous state, if the key was down before this message,
907                    this is a cheap way to ignore autorepeat keys. */
908                 if ( !(HIWORD(lParam) & KF_REPEAT) )
909                 {
910                    if ( ( wParam == VK_MENU  ||
911                           wParam == VK_LMENU ||
912                           wParam == VK_RMENU ) && !(pti->MessageQueue->QF_flags & QF_FMENUSTATUS)) //iMenuSysKey )
913                        pti->MessageQueue->QF_flags |= QF_FMENUSTATUS; //iMenuSysKey = 1;
914                    else
915                        pti->MessageQueue->QF_flags &= ~QF_FMENUSTATUS; //iMenuSysKey = 0;
916                 }
917 
918                 pti->MessageQueue->QF_flags &= ~QF_FF10STATUS; //iF10Key = 0;
919 
920                 if (wParam == VK_F4) /* Try to close the window */
921                 {
922                    PWND top = UserGetAncestor(Wnd, GA_ROOT);
923                    if (!(top->style & CS_NOCLOSE))
924                       UserPostMessage(UserHMGetHandle(top), WM_SYSCOMMAND, SC_CLOSE, 0);
925                 }
926                 else if (wParam == VK_SNAPSHOT) // Alt-VK_SNAPSHOT?
927                 {
928                    PWND pwnd = Wnd;
929                    while (IntGetParent(pwnd) != NULL)
930                    {
931                        pwnd = IntGetParent(pwnd);
932                    }
933                    ERR("DefWndScreenshot\n");
934                    DefWndScreenshot(pwnd);
935                 }
936                 else if ( wParam == VK_ESCAPE || wParam == VK_TAB ) // Alt-Tab/ESC Alt-Shift-Tab/ESC
937                 {
938                    WPARAM wParamTmp;
939                    HWND Active = UserGetActiveWindow(); // Noticed MDI problem.
940                    if (!Active)
941                    {
942                       FIXME("WM_SYSKEYDOWN VK_ESCAPE no active\n");
943                       break;
944                    }
945                    wParamTmp = UserGetKeyState(VK_SHIFT) & 0x8000 ? SC_PREVWINDOW : SC_NEXTWINDOW;
946                    co_IntSendMessage( Active, WM_SYSCOMMAND, wParamTmp, wParam );
947                 }
948             }
949             else if( wParam == VK_F10 )
950             {
951                 if (UserGetKeyState(VK_SHIFT) & 0x8000)
952                     co_IntSendMessage( UserHMGetHandle(Wnd), WM_CONTEXTMENU, (WPARAM)UserHMGetHandle(Wnd), MAKELPARAM(-1, -1) );
953                 pti->MessageQueue->QF_flags |= QF_FF10STATUS; //iF10Key = 1;
954             }
955             else if( wParam == VK_ESCAPE && (UserGetKeyState(VK_SHIFT) & 0x8000))
956                   co_IntSendMessage( UserHMGetHandle(Wnd), WM_SYSCOMMAND, SC_KEYMENU, ' ' );
957             break;
958       }
959 
960       case WM_KEYUP:
961       case WM_SYSKEYUP:
962       {
963            /* Press and release F10 or ALT */
964             if (((wParam == VK_MENU || wParam == VK_LMENU || wParam == VK_RMENU)
965                  && (pti->MessageQueue->QF_flags & (QF_FMENUSTATUS|QF_FMENUSTATUSBREAK)) == QF_FMENUSTATUS /*iMenuSysKey*/) ||
966                  ((wParam == VK_F10) && pti->MessageQueue->QF_flags & QF_FF10STATUS /*iF10Key*/))
967                 co_IntSendMessage( UserHMGetHandle(UserGetAncestor( Wnd, GA_ROOT )), WM_SYSCOMMAND, SC_KEYMENU, 0L );
968             pti->MessageQueue->QF_flags &= ~(QF_FMENUSTATUS|QF_FMENUSTATUSBREAK|QF_FF10STATUS); //iMenuSysKey = iF10Key = 0;
969             break;
970       }
971 
972       case WM_SYSCHAR:
973       {
974             pti->MessageQueue->QF_flags &= ~(QF_FMENUSTATUS|QF_FMENUSTATUSBREAK); //iMenuSysKey = 0;
975             if (wParam == VK_RETURN && (Wnd->style & WS_MINIMIZE) != 0)
976             {
977                 UserPostMessage( UserHMGetHandle(Wnd), WM_SYSCOMMAND, SC_RESTORE, 0L );
978                 break;
979             }
980             if ((HIWORD(lParam) & KF_ALTDOWN) && wParam)
981             {
982                 if (wParam == VK_TAB || wParam == VK_ESCAPE) break;
983                 if (wParam == VK_SPACE && Wnd->style & WS_CHILD)
984                     co_IntSendMessage( UserHMGetHandle(IntGetParent(Wnd)), Msg, wParam, lParam );
985                 else
986                     co_IntSendMessage( UserHMGetHandle(Wnd), WM_SYSCOMMAND, SC_KEYMENU, wParam );
987             }
988             else /* check for Ctrl-Esc */
989                 if (wParam != VK_ESCAPE) UserPostMessage(hwndSAS, WM_LOGONNOTIFY, LN_MESSAGE_BEEP, 0); //MessageBeep(0);
990             break;
991       }
992 
993       case WM_CANCELMODE:
994       {
995          pti->MessageQueue->QF_flags &= ~(QF_FMENUSTATUS|QF_FMENUSTATUSBREAK);
996 
997          MENU_EndMenu( Wnd );
998          if (IntGetCaptureWindow() == UserHMGetHandle(Wnd))
999          {
1000             IntReleaseCapture();
1001          }
1002          break;
1003       }
1004 
1005       case WM_CLOSE:
1006          co_UserDestroyWindow(Wnd);
1007          break;
1008 
1009       case WM_CTLCOLORMSGBOX:
1010       case WM_CTLCOLOREDIT:
1011       case WM_CTLCOLORLISTBOX:
1012       case WM_CTLCOLORBTN:
1013       case WM_CTLCOLORDLG:
1014       case WM_CTLCOLORSTATIC:
1015       case WM_CTLCOLORSCROLLBAR:
1016            return (LRESULT) DefWndControlColor((HDC)wParam, Msg - WM_CTLCOLORMSGBOX);
1017 
1018       case WM_CTLCOLOR:
1019            return (LRESULT) DefWndControlColor((HDC)wParam, HIWORD(lParam));
1020 
1021       case WM_SETCURSOR:
1022       {
1023          if (Wnd->style & WS_CHILD)
1024          {
1025              /* with the exception of the border around a resizable wnd,
1026               * give the parent first chance to set the cursor */
1027              if (LOWORD(lParam) < HTLEFT || LOWORD(lParam) > HTBOTTOMRIGHT)
1028              {
1029                  PWND parent = Wnd->spwndParent;//IntGetParent( Wnd );
1030                  if (parent != UserGetDesktopWindow() &&
1031                      co_IntSendMessage( UserHMGetHandle(parent), WM_SETCURSOR, wParam, lParam))
1032                     return TRUE;
1033              }
1034          }
1035          return DefWndHandleSetCursor(Wnd, wParam, lParam);
1036       }
1037 
1038       case WM_MOUSEACTIVATE:
1039          if (Wnd->style & WS_CHILD)
1040          {
1041              LONG Ret;
1042              HWND hwndParent;
1043              PWND pwndParent = IntGetParent(Wnd);
1044              hwndParent = pwndParent ? UserHMGetHandle(pwndParent) : NULL;
1045              if (hwndParent) Ret = co_IntSendMessage(hwndParent, WM_MOUSEACTIVATE, wParam, lParam);
1046              if (Ret) return (Ret);
1047          }
1048          return ( (HIWORD(lParam) == WM_LBUTTONDOWN && LOWORD(lParam) == HTCAPTION) ? MA_NOACTIVATE : MA_ACTIVATE );
1049 
1050       case WM_ACTIVATE:
1051        /* The default action in Windows is to set the keyboard focus to
1052         * the window, if it's being activated and not minimized */
1053          if (LOWORD(wParam) != WA_INACTIVE &&
1054               !(Wnd->style & WS_MINIMIZE))
1055          {
1056             //ERR("WM_ACTIVATE %p\n",hWnd);
1057             co_UserSetFocus(Wnd);
1058          }
1059          break;
1060 
1061       case WM_MOUSEWHEEL:
1062          if (Wnd->style & WS_CHILD)
1063          {
1064             HWND hwndParent;
1065             PWND pwndParent = IntGetParent(Wnd);
1066             hwndParent = pwndParent ? UserHMGetHandle(pwndParent) : NULL;
1067             return co_IntSendMessage( hwndParent, WM_MOUSEWHEEL, wParam, lParam);
1068          }
1069          break;
1070 
1071       case WM_ERASEBKGND:
1072       case WM_ICONERASEBKGND:
1073       {
1074          RECT Rect;
1075          HBRUSH hBrush = Wnd->pcls->hbrBackground;
1076          if (!hBrush) return 0;
1077          if (hBrush <= (HBRUSH)COLOR_MENUBAR)
1078          {
1079             hBrush = IntGetSysColorBrush(HandleToUlong(hBrush));
1080          }
1081          if (Wnd->pcls->style & CS_PARENTDC)
1082          {
1083             /* can't use GetClipBox with a parent DC or we fill the whole parent */
1084             IntGetClientRect(Wnd, &Rect);
1085             GreDPtoLP((HDC)wParam, (LPPOINT)&Rect, 2);
1086          }
1087          else
1088          {
1089             GdiGetClipBox((HDC)wParam, &Rect);
1090          }
1091          FillRect((HDC)wParam, &Rect, hBrush);
1092          return (1);
1093       }
1094 
1095       case WM_GETHOTKEY:
1096          //ERR("WM_GETHOTKEY\n");
1097          return DefWndGetHotKey(Wnd);
1098       case WM_SETHOTKEY:
1099          //ERR("WM_SETHOTKEY\n");
1100          return DefWndSetHotKey(Wnd, wParam);
1101 
1102       case WM_NCHITTEST:
1103       {
1104          POINT Point;
1105          Point.x = GET_X_LPARAM(lParam);
1106          Point.y = GET_Y_LPARAM(lParam);
1107          return GetNCHitEx(Wnd, Point);
1108       }
1109 
1110       case WM_PRINT:
1111       {
1112          DefWndPrint(Wnd, (HDC)wParam, lParam);
1113          return (0);
1114       }
1115 
1116       case WM_SYSCOLORCHANGE:
1117       {
1118          /* force to redraw non-client area */
1119          UserPaintCaption(Wnd, DC_NC);
1120          /* Use InvalidateRect to redraw client area, enable
1121           * erase to redraw all subcontrols otherwise send the
1122           * WM_SYSCOLORCHANGE to child windows/controls is required
1123           */
1124          co_UserRedrawWindow( Wnd, NULL, NULL, RDW_ALLCHILDREN|RDW_INVALIDATE|RDW_ERASE);
1125          return (0);
1126       }
1127 
1128       case WM_PAINTICON:
1129       case WM_PAINT:
1130       {
1131          PAINTSTRUCT Ps;
1132          HDC hDC;
1133 
1134          /* If already in Paint and Client area is not empty just return. */
1135          if (Wnd->state2 & WNDS2_STARTPAINT && !RECTL_bIsEmptyRect(&Wnd->rcClient))
1136          {
1137             ERR("In Paint and Client area is not empty!\n");
1138             return 0;
1139          }
1140 
1141          hDC = IntBeginPaint(Wnd, &Ps);
1142          if (hDC)
1143          {
1144              if (((Wnd->style & WS_MINIMIZE) != 0) && (Wnd->pcls->spicn))
1145              {
1146                  RECT ClientRect;
1147                  INT x, y;
1148 
1149                  ERR("Doing Paint and Client area is empty!\n");
1150                  IntGetClientRect(Wnd, &ClientRect);
1151                  x = (ClientRect.right - ClientRect.left - UserGetSystemMetrics(SM_CXICON)) / 2;
1152                  y = (ClientRect.bottom - ClientRect.top - UserGetSystemMetrics(SM_CYICON)) / 2;
1153                  UserReferenceObject(Wnd->pcls->spicn);
1154                  UserDrawIconEx(hDC, x, y, Wnd->pcls->spicn, 0, 0, 0, 0, DI_NORMAL | DI_COMPAT | DI_DEFAULTSIZE);
1155                  UserDereferenceObject(Wnd->pcls->spicn);
1156              }
1157 
1158              IntEndPaint(Wnd, &Ps);
1159          }
1160          return (0);
1161       }
1162 
1163       case WM_SYNCPAINT:
1164       {
1165          HRGN hRgn;
1166          Wnd->state &= ~WNDS_SYNCPAINTPENDING;
1167          TRACE("WM_SYNCPAINT\n");
1168          hRgn = NtGdiCreateRectRgn(0, 0, 0, 0);
1169          if (hRgn)
1170          {
1171              if (co_UserGetUpdateRgn(Wnd, hRgn, FALSE) != NULLREGION)
1172              {
1173                 PREGION pRgn = REGION_LockRgn(hRgn);
1174                 if (pRgn) REGION_UnlockRgn(pRgn);
1175                 if (!wParam)
1176                     wParam = (RDW_ERASENOW | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN);
1177                 co_UserRedrawWindow(Wnd, NULL, pRgn, wParam);
1178              }
1179              GreDeleteObject(hRgn);
1180          }
1181          return 0;
1182       }
1183 
1184       case WM_SETREDRAW:
1185           if (wParam)
1186           {
1187              if (!(Wnd->style & WS_VISIBLE))
1188              {
1189                 IntSetStyle( Wnd, WS_VISIBLE, 0 );
1190                 Wnd->state |= WNDS_SENDNCPAINT;
1191              }
1192           }
1193           else
1194           {
1195              if (Wnd->style & WS_VISIBLE)
1196              {
1197                 co_UserRedrawWindow( Wnd, NULL, NULL, RDW_ALLCHILDREN | RDW_VALIDATE );
1198                 IntSetStyle( Wnd, 0, WS_VISIBLE );
1199              }
1200           }
1201           return 0;
1202 
1203       case WM_WINDOWPOSCHANGING:
1204       {
1205           return (DefWndHandleWindowPosChanging(Wnd, (WINDOWPOS*)lParam));
1206       }
1207 
1208       case WM_WINDOWPOSCHANGED:
1209       {
1210           return (DefWndHandleWindowPosChanged(Wnd, (WINDOWPOS*)lParam));
1211       }
1212 
1213       case WM_NCCALCSIZE:
1214       {
1215          return NC_HandleNCCalcSize( Wnd, wParam, (RECTL *)lParam, FALSE );
1216       }
1217 
1218       case WM_NCACTIVATE:
1219       {
1220           return NC_HandleNCActivate( Wnd, wParam, lParam );
1221       }
1222 
1223       //
1224       // NC Paint mode.
1225       //
1226       case WM_NCPAINT:
1227       {
1228           HDC hDC = UserGetDCEx(Wnd, (HRGN)wParam, DCX_WINDOW | DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN);
1229           Wnd->state |= WNDS_FORCEMENUDRAW;
1230           NC_DoNCPaint(Wnd, hDC, -1);
1231           Wnd->state &= ~WNDS_FORCEMENUDRAW;
1232           UserReleaseDC(Wnd, hDC, FALSE);
1233           return 0;
1234       }
1235       //
1236       //  Draw Caption mode.
1237       //
1238       //  wParam are DC_* flags.
1239       //
1240       case WM_NCUAHDRAWCAPTION:
1241       {
1242           HDC hDC = UserGetDCEx(Wnd, NULL, DCX_WINDOW|DCX_USESTYLE);
1243           TRACE("WM_NCUAHDRAWCAPTION: wParam DC_ flags %08x\n",wParam);
1244           UserDrawCaptionBar(Wnd, hDC, wParam | DC_FRAME); // Include DC_FRAME to comp for drawing glitch.
1245           UserReleaseDC(Wnd, hDC, FALSE);
1246           return 0;
1247       }
1248       //
1249       //  Draw Frame mode.
1250       //
1251       //  wParam is HDC, lParam are DC_ACTIVE and or DC_REDRAWHUNGWND.
1252       //
1253       case WM_NCUAHDRAWFRAME:
1254       {
1255           TRACE("WM_NCUAHDRAWFRAME: wParam hDC %p lParam DC_ flags %08x\n",wParam,lParam);
1256           NC_DoNCPaint(Wnd, (HDC)wParam, lParam|DC_NC);
1257           return 0;
1258       }
1259 
1260       /* ReactOS only. */
1261       case WM_CBT:
1262       {
1263          switch (wParam)
1264          {
1265             case HCBT_MOVESIZE:
1266             {
1267                RECTL rt;
1268 
1269                if (lParam)
1270                {
1271                   _SEH2_TRY
1272                   {
1273                       ProbeForRead((PVOID)lParam,
1274                                    sizeof(RECT),
1275                                    1);
1276 
1277                       RtlCopyMemory(&rt,
1278                                     (PVOID)lParam,
1279                                     sizeof(RECT));
1280                   }
1281                   _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1282                   {
1283                       lResult = 1;
1284                   }
1285                   _SEH2_END;
1286                }
1287                if (!lResult)
1288                   lResult = co_HOOK_CallHooks(WH_CBT, HCBT_MOVESIZE, (WPARAM)UserHMGetHandle(Wnd), lParam ? (LPARAM)&rt : 0);
1289            }
1290             break;
1291          }
1292          break;
1293       }
1294       break;
1295    }
1296    return lResult;
1297 }
1298 
1299 /* EOF */
1300