git.oblomov.eu Git - wine/blob - windows/defwnd.c

   1 /*
   2  * Default window procedure
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *           1995 Alex Korobka
   6  */
   7
   8 #include <stdlib.h>
   9 #include "win.h"
  10 #include "user.h"
  11 #include "heap.h"
  12 #include "nonclient.h"
  13 #include "winpos.h"
  14 #include "dce.h"
  15 #include "sysmetrics.h"
  16 #include "debug.h"
  17 #include "spy.h"
  18 #include "tweak.h"
  19 #include "wine/winuser16.h"
  20
  21   /* Last COLOR id */
  22 #define COLOR_MAX   COLOR_BTNHIGHLIGHT
  23
  24   /* bits in the dwKeyData */
  25 #define KEYDATA_ALT             0x2000
  26 #define KEYDATA_PREVSTATE       0x4000
  27
  28 static short iF10Key = 0;
  29 static short iMenuSysKey = 0;
  30
  31 /***********************************************************************
  32  *           DEFWND_HandleWindowPosChanged
  33  *
  34  * Handle the WM_WINDOWPOSCHANGED message.
  35  */
  36 static void DEFWND_HandleWindowPosChanged( WND *wndPtr, UINT32 flags )
  37 {
  38     WPARAM16 wp = SIZE_RESTORED;
  39
  40     if (!(flags & SWP_NOCLIENTMOVE))
  41         SendMessage16( wndPtr->hwndSelf, WM_MOVE, 0,
  42                     MAKELONG(wndPtr->rectClient.left, wndPtr->rectClient.top));
  43     if (!(flags & SWP_NOCLIENTSIZE))
  44     {
  45         if (wndPtr->dwStyle & WS_MAXIMIZE) wp = SIZE_MAXIMIZED;
  46         else if (wndPtr->dwStyle & WS_MINIMIZE) wp = SIZE_MINIMIZED;
  47
  48         SendMessage16( wndPtr->hwndSelf, WM_SIZE, wp,
  49                      MAKELONG(wndPtr->rectClient.right-wndPtr->rectClient.left,
  50                             wndPtr->rectClient.bottom-wndPtr->rectClient.top));
  51     }
  52 }
  53
  54
  55 /***********************************************************************
  56  *           DEFWND_SetText
  57  *
  58  * Set the window text.
  59  */
  60 void DEFWND_SetText( WND *wndPtr, LPCSTR text )
  61 {
  62     if (!text) text = "";
  63     if (wndPtr->text) HeapFree( SystemHeap, 0, wndPtr->text );
  64     wndPtr->text = HEAP_strdupA( SystemHeap, 0, text );
  65     wndPtr->pDriver->pSetText(wndPtr, wndPtr->text);
  66 }
  67
  68 /***********************************************************************
  69  *           DEFWND_ControlColor
  70  *
  71  * Default colors for control painting.
  72  */
  73 HBRUSH32 DEFWND_ControlColor( HDC32 hDC, UINT16 ctlType )
  74 {
  75     if( ctlType == CTLCOLOR_SCROLLBAR)
  76     {
  77         HBRUSH32 hb = GetSysColorBrush32(COLOR_SCROLLBAR);
  78         SetBkColor32( hDC, RGB(255, 255, 255) );
  79         SetTextColor32( hDC, RGB(0, 0, 0) );
  80         UnrealizeObject32( hb );
  81         return hb;
  82     }
  83
  84     SetTextColor32( hDC, GetSysColor32(COLOR_WINDOWTEXT));
  85
  86     if (TWEAK_WineLook > WIN31_LOOK) {
  87         if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
  88             SetBkColor32( hDC, GetSysColor32(COLOR_WINDOW) );
  89         else {
  90             SetBkColor32( hDC, GetSysColor32(COLOR_3DFACE) );
  91             return GetSysColorBrush32(COLOR_3DFACE);
  92         }
  93     }
  94     else
  95         SetBkColor32( hDC, GetSysColor32(COLOR_WINDOW) );
  96     return GetSysColorBrush32(COLOR_WINDOW);
  97 }
  98
  99
 100 /***********************************************************************
 101  *           DEFWND_SetRedraw
 102  */
 103 static void DEFWND_SetRedraw( WND* wndPtr, WPARAM32 wParam )
 104 {
 105     BOOL32 bVisible = wndPtr->dwStyle & WS_VISIBLE;
 106
 107     TRACE(win,"%04x %i\n", wndPtr->hwndSelf, (wParam!=0) );
 108
 109     if( wParam )
 110     {
 111         if( !bVisible )
 112         {
 113             wndPtr->dwStyle |= WS_VISIBLE;
 114             DCE_InvalidateDCE( wndPtr, &wndPtr->rectWindow );
 115         }
 116     }
 117     else if( bVisible )
 118     {
 119         if( wndPtr->dwStyle & WS_MINIMIZE ) wParam = RDW_VALIDATE;
 120         else wParam = RDW_ALLCHILDREN | RDW_VALIDATE;
 121
 122         PAINT_RedrawWindow( wndPtr->hwndSelf, NULL, 0, wParam, 0 );
 123         DCE_InvalidateDCE( wndPtr, &wndPtr->rectWindow );
 124         wndPtr->dwStyle &= ~WS_VISIBLE;
 125     }
 126 }
 127
 128 /***********************************************************************
 129  *           DEFWND_DefWinProc
 130  *
 131  * Default window procedure for messages that are the same in Win16 and Win32.
 132  */
 133 static LRESULT DEFWND_DefWinProc( WND *wndPtr, UINT32 msg, WPARAM32 wParam,
 134                                   LPARAM lParam )
 135 {
 136     switch(msg)
 137     {
 138     case WM_NCPAINT:
 139         return NC_HandleNCPaint( wndPtr->hwndSelf, (HRGN32)wParam );
 140
 141     case WM_NCHITTEST:
 142         return NC_HandleNCHitTest( wndPtr->hwndSelf, MAKEPOINT16(lParam) );
 143
 144     case WM_NCLBUTTONDOWN:
 145         return NC_HandleNCLButtonDown( wndPtr, wParam, lParam );
 146
 147     case WM_LBUTTONDBLCLK:
 148     case WM_NCLBUTTONDBLCLK:
 149         return NC_HandleNCLButtonDblClk( wndPtr, wParam, lParam );
 150
 151     case WM_RBUTTONDOWN:
 152     case WM_NCRBUTTONDOWN:
 153         if ((wndPtr->flags & WIN_ISWIN32) || (TWEAK_WineLook > WIN31_LOOK))
 154         {
 155             ClientToScreen16(wndPtr->hwndSelf, (LPPOINT16)&lParam);
 156             SendMessage32A( wndPtr->hwndSelf, WM_CONTEXTMENU,
 157                             wndPtr->hwndSelf, lParam);
 158         }
 159         break;
 160
 161     case WM_CONTEXTMENU:
 162         if( wndPtr->dwStyle & WS_CHILD )
 163             SendMessage32A( wndPtr->parent->hwndSelf, msg, wParam, lParam );
 164         else
 165           if (wndPtr->hSysMenu)
 166           { /*
 167             TrackPopupMenu32(wndPtr->hSysMenu,TPM_LEFTALIGN | TPM_RETURNCMD,LOWORD(lParam),HIWORD(lParam),0,wndPtr->hwndSelf,NULL);
 168             DestroyMenu32(wndPtr->hSysMenu);
 169             */
 170             FIXME(win,"Display default popup menu\n");
 171           /* Track system popup if click was in the caption area. */
 172           }
 173         break;
 174
 175     case WM_NCACTIVATE:
 176         return NC_HandleNCActivate( wndPtr, wParam );
 177
 178     case WM_NCDESTROY:
 179         if (wndPtr->text) HeapFree( SystemHeap, 0, wndPtr->text );
 180         wndPtr->text = NULL;
 181         if (wndPtr->pVScroll) HeapFree( SystemHeap, 0, wndPtr->pVScroll );
 182         if (wndPtr->pHScroll) HeapFree( SystemHeap, 0, wndPtr->pHScroll );
 183         wndPtr->pVScroll = wndPtr->pHScroll = NULL;
 184         return 0;
 185
 186     case WM_PAINTICON:
 187     case WM_PAINT:
 188         {
 189             PAINTSTRUCT16 ps;
 190             HDC16 hdc = BeginPaint16( wndPtr->hwndSelf, &ps );
 191             if( hdc )
 192             {
 193               if( (wndPtr->dwStyle & WS_MINIMIZE) && wndPtr->class->hIcon )
 194               {
 195                 int x = (wndPtr->rectWindow.right - wndPtr->rectWindow.left -
 196                         SYSMETRICS_CXICON)/2;
 197                 int y = (wndPtr->rectWindow.bottom - wndPtr->rectWindow.top -
 198                         SYSMETRICS_CYICON)/2;
 199                 TRACE(win,"Painting class icon: vis rect=(%i,%i - %i,%i)\n",
 200                 ps.rcPaint.left, ps.rcPaint.top, ps.rcPaint.right, ps.rcPaint.bottom );
 201                 DrawIcon32( hdc, x, y, wndPtr->class->hIcon );
 202               }
 203               EndPaint16( wndPtr->hwndSelf, &ps );
 204             }
 205             return 0;
 206         }
 207
 208     case WM_SETREDRAW:
 209         DEFWND_SetRedraw( wndPtr, wParam );
 210         return 0;
 211
 212     case WM_CLOSE:
 213         DestroyWindow32( wndPtr->hwndSelf );
 214         return 0;
 215
 216     case WM_MOUSEACTIVATE:
 217         if (wndPtr->dwStyle & WS_CHILD)
 218         {
 219             LONG ret = SendMessage16( wndPtr->parent->hwndSelf,
 220                                       WM_MOUSEACTIVATE, wParam, lParam );
 221             if (ret) return ret;
 222         }
 223
 224         /* Caption clicks are handled by the NC_HandleNCLButtonDown() */
 225         return (LOWORD(lParam) == HTCAPTION) ? MA_NOACTIVATE : MA_ACTIVATE;
 226
 227     case WM_ACTIVATE:
 228         if (LOWORD(wParam) != WA_INACTIVE)
 229                 SetWindowPos32(wndPtr->hwndSelf, HWND_TOP, 0, 0, 0, 0,
 230                          SWP_NOMOVE | SWP_NOSIZE);
 231         break;
 232
 233     case WM_ERASEBKGND:
 234     case WM_ICONERASEBKGND:
 235         {
 236             if (!wndPtr->class->hbrBackground) return 0;
 237
 238             if (wndPtr->class->hbrBackground <= (HBRUSH16)(COLOR_MAX+1))
 239             {
 240                 HBRUSH32 hbrush = CreateSolidBrush32(
 241                        GetSysColor32(((DWORD)wndPtr->class->hbrBackground)-1));
 242                  FillWindow( GetParent16(wndPtr->hwndSelf), wndPtr->hwndSelf,
 243                              (HDC16)wParam, hbrush);
 244                  DeleteObject32( hbrush );
 245             }
 246             else FillWindow( GetParent16(wndPtr->hwndSelf), wndPtr->hwndSelf,
 247                              (HDC16)wParam, wndPtr->class->hbrBackground );
 248             return 1;
 249         }
 250
 251     case WM_GETDLGCODE:
 252         return 0;
 253
 254     case WM_CTLCOLORMSGBOX:
 255     case WM_CTLCOLOREDIT:
 256     case WM_CTLCOLORLISTBOX:
 257     case WM_CTLCOLORBTN:
 258     case WM_CTLCOLORDLG:
 259     case WM_CTLCOLORSTATIC:
 260     case WM_CTLCOLORSCROLLBAR:
 261         return (LRESULT)DEFWND_ControlColor( (HDC32)wParam, msg - WM_CTLCOLORMSGBOX );
 262
 263     case WM_CTLCOLOR:
 264         return (LRESULT)DEFWND_ControlColor( (HDC32)wParam, HIWORD(lParam) );
 265
 266     case WM_GETTEXTLENGTH:
 267         if (wndPtr->text) return (LRESULT)strlen(wndPtr->text);
 268         return 0;
 269
 270     case WM_SETCURSOR:
 271         if (wndPtr->dwStyle & WS_CHILD)
 272             if (SendMessage16(wndPtr->parent->hwndSelf, WM_SETCURSOR,
 273                             wParam, lParam))
 274                 return TRUE;
 275         return NC_HandleSetCursor( wndPtr->hwndSelf, wParam, lParam );
 276
 277     case WM_SYSCOMMAND:
 278         return NC_HandleSysCommand( wndPtr->hwndSelf, wParam,
 279                                     MAKEPOINT16(lParam) );
 280
 281     case WM_KEYDOWN:
 282         if(wParam == VK_F10) iF10Key = VK_F10;
 283         break;
 284
 285     case WM_SYSKEYDOWN:
 286         if( HIWORD(lParam) & KEYDATA_ALT )
 287         {
 288             /* if( HIWORD(lParam) & ~KEYDATA_PREVSTATE ) */
 289               if( wParam == VK_MENU && !iMenuSysKey )
 290                 iMenuSysKey = 1;
 291               else
 292                 iMenuSysKey = 0;
 293
 294             iF10Key = 0;
 295
 296             if( wParam == VK_F4 )       /* try to close the window */
 297             {
 298                 HWND32 hWnd = WIN_GetTopParent( wndPtr->hwndSelf );
 299                 wndPtr = WIN_FindWndPtr( hWnd );
 300                 if( wndPtr && !(wndPtr->class->style & CS_NOCLOSE) )
 301                     PostMessage16( hWnd, WM_SYSCOMMAND, SC_CLOSE, 0 );
 302             }
 303         }
 304         else if( wParam == VK_F10 )
 305                 iF10Key = 1;
 306              else
 307                 if( wParam == VK_ESCAPE && (GetKeyState32(VK_SHIFT) & 0x8000))
 308                     SendMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 309                                   (WPARAM16)SC_KEYMENU, (LPARAM)VK_SPACE);
 310         break;
 311
 312     case WM_KEYUP:
 313     case WM_SYSKEYUP:
 314         /* Press and release F10 or ALT */
 315         if (((wParam == VK_MENU) && iMenuSysKey) ||
 316             ((wParam == VK_F10) && iF10Key))
 317               SendMessage16( WIN_GetTopParent(wndPtr->hwndSelf),
 318                              WM_SYSCOMMAND, SC_KEYMENU, 0L );
 319         iMenuSysKey = iF10Key = 0;
 320         break;
 321
 322     case WM_SYSCHAR:
 323         iMenuSysKey = 0;
 324         if (wParam == VK_RETURN && (wndPtr->dwStyle & WS_MINIMIZE))
 325         {
 326             PostMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 327                            (WPARAM16)SC_RESTORE, 0L );
 328             break;
 329         }
 330         if ((HIWORD(lParam) & KEYDATA_ALT) && wParam)
 331         {
 332             if (wParam == VK_TAB || wParam == VK_ESCAPE) break;
 333             if (wParam == VK_SPACE && (wndPtr->dwStyle & WS_CHILD))
 334                 SendMessage16( wndPtr->parent->hwndSelf, msg, wParam, lParam );
 335             else
 336                 SendMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 337                                (WPARAM16)SC_KEYMENU, (LPARAM)(DWORD)wParam );
 338         }
 339         else /* check for Ctrl-Esc */
 340             if (wParam != VK_ESCAPE) MessageBeep32(0);
 341         break;
 342
 343     case WM_SHOWWINDOW:
 344         if (!lParam) return 0; /* sent from ShowWindow */
 345         if (!(wndPtr->dwStyle & WS_POPUP) || !wndPtr->owner) return 0;
 346         if ((wndPtr->dwStyle & WS_VISIBLE) && wParam) return 0;
 347         else if (!(wndPtr->dwStyle & WS_VISIBLE) && !wParam) return 0;
 348         ShowWindow32( wndPtr->hwndSelf, wParam ? SW_SHOWNOACTIVATE : SW_HIDE );
 349         break;
 350
 351     case WM_CANCELMODE:
 352         if (wndPtr->parent == WIN_GetDesktop()) EndMenu();
 353         if (GetCapture32() == wndPtr->hwndSelf) ReleaseCapture();
 354         break;
 355
 356     case WM_VKEYTOITEM:
 357     case WM_CHARTOITEM:
 358         return -1;
 359
 360     case WM_DROPOBJECT:
 361         return DRAG_FILE;
 362
 363     case WM_QUERYDROPOBJECT:
 364         if (wndPtr->dwExStyle & WS_EX_ACCEPTFILES) return 1;
 365         break;
 366
 367     case WM_QUERYDRAGICON:
 368         {
 369             HICON16 hIcon=0;
 370             UINT16 len;
 371
 372             if( (hIcon=wndPtr->class->hCursor) ) return (LRESULT)hIcon;
 373             for(len=1; len<64; len++)
 374                 if((hIcon=LoadIcon16(wndPtr->hInstance,MAKEINTRESOURCE16(len))))
 375                     return (LRESULT)hIcon;
 376             return (LRESULT)LoadIcon16(0,IDI_APPLICATION16);
 377         }
 378         break;
 379
 380     case WM_ISACTIVEICON:
 381         return ((wndPtr->flags & WIN_NCACTIVATED) != 0);
 382
 383     case WM_QUERYOPEN:
 384     case WM_QUERYENDSESSION:
 385         return 1;
 386     }
 387     return 0;
 388 }
 389
 390
 391
 392 /***********************************************************************
 393  *           DefWindowProc16   (USER.107)
 394  */
 395 LRESULT WINAPI DefWindowProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 396                                 LPARAM lParam )
 397 {
 398     WND * wndPtr = WIN_FindWndPtr( hwnd );
 399     LRESULT result = 0;
 400
 401     if (!wndPtr) return 0;
 402     SPY_EnterMessage( SPY_DEFWNDPROC16, hwnd, msg, wParam, lParam );
 403
 404     switch(msg)
 405     {
 406     case WM_NCCREATE:
 407         {
 408             CREATESTRUCT16 *cs = (CREATESTRUCT16 *)PTR_SEG_TO_LIN(lParam);
 409             if (cs->lpszName)
 410                 DEFWND_SetText( wndPtr, (LPSTR)PTR_SEG_TO_LIN(cs->lpszName) );
 411             result = 1;
 412         }
 413         break;
 414
 415     case WM_NCCALCSIZE:
 416         {
 417             RECT32 rect32;
 418             CONV_RECT16TO32( (RECT16 *)PTR_SEG_TO_LIN(lParam), &rect32 );
 419             result = NC_HandleNCCalcSize( wndPtr, &rect32 );
 420             CONV_RECT32TO16( &rect32, (RECT16 *)PTR_SEG_TO_LIN(lParam) );
 421         }
 422         break;
 423
 424     case WM_WINDOWPOSCHANGING:
 425         result = WINPOS_HandleWindowPosChanging16( wndPtr,
 426                                        (WINDOWPOS16 *)PTR_SEG_TO_LIN(lParam) );
 427         break;
 428
 429     case WM_WINDOWPOSCHANGED:
 430         {
 431             WINDOWPOS16 * winPos = (WINDOWPOS16 *)PTR_SEG_TO_LIN(lParam);
 432             DEFWND_HandleWindowPosChanged( wndPtr, winPos->flags );
 433         }
 434         break;
 435
 436     case WM_GETTEXT:
 437         if (wParam && wndPtr->text)
 438         {
 439             lstrcpyn32A( (LPSTR)PTR_SEG_TO_LIN(lParam), wndPtr->text, wParam );
 440             result = (LRESULT)strlen( (LPSTR)PTR_SEG_TO_LIN(lParam) );
 441         }
 442         break;
 443
 444     case WM_SETTEXT:
 445         DEFWND_SetText( wndPtr, (LPSTR)PTR_SEG_TO_LIN(lParam) );
 446         if( wndPtr->dwStyle & WS_CAPTION ) NC_HandleNCPaint( hwnd , (HRGN32)1 );
 447         break;
 448
 449     default:
 450         result = DEFWND_DefWinProc( wndPtr, msg, wParam, lParam );
 451         break;
 452     }
 453
 454     SPY_ExitMessage( SPY_RESULT_DEFWND16, hwnd, msg, result );
 455     return result;
 456 }
 457
 458
 459 /***********************************************************************
 460  *  DefWindowProc32A [USER32.126]
 461  *
 462  */
 463 LRESULT WINAPI DefWindowProc32A( HWND32 hwnd, UINT32 msg, WPARAM32 wParam,
 464                                  LPARAM lParam )
 465 {
 466     WND * wndPtr = WIN_FindWndPtr( hwnd );
 467     LRESULT result = 0;
 468
 469     if (!wndPtr) return 0;
 470     SPY_EnterMessage( SPY_DEFWNDPROC32, hwnd, msg, wParam, lParam );
 471
 472     switch(msg)
 473     {
 474     case WM_NCCREATE:
 475         {
 476             CREATESTRUCT32A *cs = (CREATESTRUCT32A *)lParam;
 477             if (cs->lpszName) DEFWND_SetText( wndPtr, cs->lpszName );
 478             result = 1;
 479         }
 480         break;
 481
 482     case WM_NCCALCSIZE:
 483         result = NC_HandleNCCalcSize( wndPtr, (RECT32 *)lParam );
 484         break;
 485
 486     case WM_WINDOWPOSCHANGING:
 487         result = WINPOS_HandleWindowPosChanging32( wndPtr,
 488                                                    (WINDOWPOS32 *)lParam );
 489         break;
 490
 491     case WM_WINDOWPOSCHANGED:
 492         {
 493             WINDOWPOS32 * winPos = (WINDOWPOS32 *)lParam;
 494             DEFWND_HandleWindowPosChanged( wndPtr, winPos->flags );
 495         }
 496         break;
 497
 498     case WM_GETTEXT:
 499         if (wParam && wndPtr->text)
 500         {
 501             lstrcpyn32A( (LPSTR)lParam, wndPtr->text, wParam );
 502             result = (LRESULT)strlen( (LPSTR)lParam );
 503         }
 504         break;
 505
 506     case WM_SETTEXT:
 507         DEFWND_SetText( wndPtr, (LPSTR)lParam );
 508         NC_HandleNCPaint( hwnd , (HRGN32)1 );  /* Repaint caption */
 509         break;
 510
 511     default:
 512         result = DEFWND_DefWinProc( wndPtr, msg, wParam, lParam );
 513         break;
 514     }
 515
 516     SPY_ExitMessage( SPY_RESULT_DEFWND32, hwnd, msg, result );
 517     return result;
 518 }
 519
 520
 521 /***********************************************************************
 522  * DefWindowProc32W [USER32.127] Calls default window message handler
 523  *
 524  * Calls default window procedure for messages not processed
 525  *  by application.
 526  *
 527  *  RETURNS
 528  *     Return value is dependent upon the message.
 529 */
 530 LRESULT WINAPI DefWindowProc32W(
 531     HWND32 hwnd,      /* [in] window procedure recieving message */
 532     UINT32 msg,       /* [in] message identifier */
 533     WPARAM32 wParam,  /* [in] first message parameter */
 534     LPARAM lParam )   /* [in] second message parameter */
 535 {
 536     LRESULT result;
 537
 538     switch(msg)
 539     {
 540     case WM_NCCREATE:
 541         {
 542             CREATESTRUCT32W *cs = (CREATESTRUCT32W *)lParam;
 543             if (cs->lpszName)
 544             {
 545                 WND *wndPtr = WIN_FindWndPtr( hwnd );
 546                 LPSTR str = HEAP_strdupWtoA(GetProcessHeap(), 0, cs->lpszName);
 547                 DEFWND_SetText( wndPtr, str );
 548                 HeapFree( GetProcessHeap(), 0, str );
 549             }
 550             result = 1;
 551         }
 552         break;
 553
 554     case WM_GETTEXT:
 555         {
 556             LPSTR str = HeapAlloc( GetProcessHeap(), 0, wParam );
 557             result = DefWindowProc32A( hwnd, msg, wParam, (LPARAM)str );
 558             lstrcpynAtoW( (LPWSTR)lParam, str, wParam );
 559             HeapFree( GetProcessHeap(), 0, str );
 560         }
 561         break;
 562
 563     case WM_SETTEXT:
 564         {
 565             LPSTR str = HEAP_strdupWtoA( GetProcessHeap(), 0, (LPWSTR)lParam );
 566             result = DefWindowProc32A( hwnd, msg, wParam, (LPARAM)str );
 567             HeapFree( GetProcessHeap(), 0, str );
 568         }
 569         break;
 570
 571     default:
 572         result = DefWindowProc32A( hwnd, msg, wParam, lParam );
 573         break;
 574     }
 575     return result;
 576 }