windows/defwnd.c

   1 /*
   2  * Default window procedure
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *           1995 Alex Korobka
   6  */
   7
   8 #include <string.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, UINT 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 HBRUSH DEFWND_ControlColor( HDC hDC, UINT16 ctlType )
  74 {
  75     if( ctlType == CTLCOLOR_SCROLLBAR)
  76     {
  77         HBRUSH hb = GetSysColorBrush(COLOR_SCROLLBAR);
  78         SetBkColor( hDC, RGB(255, 255, 255) );
  79         SetTextColor( hDC, RGB(0, 0, 0) );
  80         UnrealizeObject( hb );
  81         return hb;
  82     }
  83
  84     SetTextColor( hDC, GetSysColor(COLOR_WINDOWTEXT));
  85
  86     if (TWEAK_WineLook > WIN31_LOOK) {
  87         if ((ctlType == CTLCOLOR_EDIT) || (ctlType == CTLCOLOR_LISTBOX))
  88             SetBkColor( hDC, GetSysColor(COLOR_WINDOW) );
  89         else {
  90             SetBkColor( hDC, GetSysColor(COLOR_3DFACE) );
  91             return GetSysColorBrush(COLOR_3DFACE);
  92         }
  93     }
  94     else
  95         SetBkColor( hDC, GetSysColor(COLOR_WINDOW) );
  96     return GetSysColorBrush(COLOR_WINDOW);
  97 }
  98
  99
 100 /***********************************************************************
 101  *           DEFWND_SetRedraw
 102  */
 103 static void DEFWND_SetRedraw( WND* wndPtr, WPARAM wParam )
 104 {
 105     BOOL 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, UINT msg, WPARAM wParam,
 134                                   LPARAM lParam )
 135 {
 136     switch(msg)
 137     {
 138     case WM_NCPAINT:
 139         return NC_HandleNCPaint( wndPtr->hwndSelf, (HRGN)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             SendMessageA( wndPtr->hwndSelf, WM_CONTEXTMENU,
 157                             wndPtr->hwndSelf, lParam);
 158         }
 159         break;
 160
 161     case WM_CONTEXTMENU:
 162         if( wndPtr->dwStyle & WS_CHILD )
 163             SendMessageA( 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                 DrawIcon( 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         DestroyWindow( 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         /* The default action in Windows is to set the keyboard focus to
 229          * the window, if it's being activated and not minimized */
 230         if (LOWORD(wParam) != WA_INACTIVE) {
 231                 /* I don't know who put this SetWindowPos here, it does not
 232                  * seem very logical to have it here... (FIXME?) */
 233                 SetWindowPos(wndPtr->hwndSelf, HWND_TOP, 0, 0, 0, 0,
 234                          SWP_NOMOVE | SWP_NOSIZE);
 235                 if (!(wndPtr->dwStyle & WS_MINIMIZE))
 236                         SetFocus(wndPtr->hwndSelf);
 237         }
 238         break;
 239
 240     case WM_ERASEBKGND:
 241     case WM_ICONERASEBKGND:
 242         {
 243             if (!wndPtr->class->hbrBackground) return 0;
 244
 245             if (wndPtr->class->hbrBackground <= (HBRUSH16)(COLOR_MAX+1))
 246             {
 247                 HBRUSH hbrush = CreateSolidBrush(
 248                        GetSysColor(((DWORD)wndPtr->class->hbrBackground)-1));
 249                  FillWindow16( GetParent16(wndPtr->hwndSelf), wndPtr->hwndSelf,
 250                              (HDC16)wParam, hbrush);
 251                  DeleteObject( hbrush );
 252             }
 253             else FillWindow16( GetParent16(wndPtr->hwndSelf), wndPtr->hwndSelf,
 254                              (HDC16)wParam, wndPtr->class->hbrBackground );
 255             return 1;
 256         }
 257
 258     case WM_GETDLGCODE:
 259         return 0;
 260
 261     case WM_CTLCOLORMSGBOX:
 262     case WM_CTLCOLOREDIT:
 263     case WM_CTLCOLORLISTBOX:
 264     case WM_CTLCOLORBTN:
 265     case WM_CTLCOLORDLG:
 266     case WM_CTLCOLORSTATIC:
 267     case WM_CTLCOLORSCROLLBAR:
 268         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, msg - WM_CTLCOLORMSGBOX );
 269
 270     case WM_CTLCOLOR:
 271         return (LRESULT)DEFWND_ControlColor( (HDC)wParam, HIWORD(lParam) );
 272
 273     case WM_GETTEXTLENGTH:
 274         if (wndPtr->text) return (LRESULT)strlen(wndPtr->text);
 275         return 0;
 276
 277     case WM_SETCURSOR:
 278         if (wndPtr->dwStyle & WS_CHILD)
 279             if (SendMessage16(wndPtr->parent->hwndSelf, WM_SETCURSOR,
 280                             wParam, lParam))
 281                 return TRUE;
 282         return NC_HandleSetCursor( wndPtr->hwndSelf, wParam, lParam );
 283
 284     case WM_SYSCOMMAND:
 285         return NC_HandleSysCommand( wndPtr->hwndSelf, wParam,
 286                                     MAKEPOINT16(lParam) );
 287
 288     case WM_KEYDOWN:
 289         if(wParam == VK_F10) iF10Key = VK_F10;
 290         break;
 291
 292     case WM_SYSKEYDOWN:
 293         if( HIWORD(lParam) & KEYDATA_ALT )
 294         {
 295             /* if( HIWORD(lParam) & ~KEYDATA_PREVSTATE ) */
 296               if( wParam == VK_MENU && !iMenuSysKey )
 297                 iMenuSysKey = 1;
 298               else
 299                 iMenuSysKey = 0;
 300
 301             iF10Key = 0;
 302
 303             if( wParam == VK_F4 )       /* try to close the window */
 304             {
 305                 HWND hWnd = WIN_GetTopParent( wndPtr->hwndSelf );
 306                 wndPtr = WIN_FindWndPtr( hWnd );
 307                 if( wndPtr && !(wndPtr->class->style & CS_NOCLOSE) )
 308                     PostMessage16( hWnd, WM_SYSCOMMAND, SC_CLOSE, 0 );
 309             }
 310         }
 311         else if( wParam == VK_F10 )
 312                 iF10Key = 1;
 313              else
 314                 if( wParam == VK_ESCAPE && (GetKeyState(VK_SHIFT) & 0x8000))
 315                     SendMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 316                                   (WPARAM16)SC_KEYMENU, (LPARAM)VK_SPACE);
 317         break;
 318
 319     case WM_KEYUP:
 320     case WM_SYSKEYUP:
 321         /* Press and release F10 or ALT */
 322         if (((wParam == VK_MENU) && iMenuSysKey) ||
 323             ((wParam == VK_F10) && iF10Key))
 324               SendMessage16( WIN_GetTopParent(wndPtr->hwndSelf),
 325                              WM_SYSCOMMAND, SC_KEYMENU, 0L );
 326         iMenuSysKey = iF10Key = 0;
 327         break;
 328
 329     case WM_SYSCHAR:
 330         iMenuSysKey = 0;
 331         if (wParam == VK_RETURN && (wndPtr->dwStyle & WS_MINIMIZE))
 332         {
 333             PostMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 334                            (WPARAM16)SC_RESTORE, 0L );
 335             break;
 336         }
 337         if ((HIWORD(lParam) & KEYDATA_ALT) && wParam)
 338         {
 339             if (wParam == VK_TAB || wParam == VK_ESCAPE) break;
 340             if (wParam == VK_SPACE && (wndPtr->dwStyle & WS_CHILD))
 341                 SendMessage16( wndPtr->parent->hwndSelf, msg, wParam, lParam );
 342             else
 343                 SendMessage16( wndPtr->hwndSelf, WM_SYSCOMMAND,
 344                                (WPARAM16)SC_KEYMENU, (LPARAM)(DWORD)wParam );
 345         }
 346         else /* check for Ctrl-Esc */
 347             if (wParam != VK_ESCAPE) MessageBeep(0);
 348         break;
 349
 350     case WM_SHOWWINDOW:
 351         if (!lParam) return 0; /* sent from ShowWindow */
 352         if (!(wndPtr->dwStyle & WS_POPUP) || !wndPtr->owner) return 0;
 353         if ((wndPtr->dwStyle & WS_VISIBLE) && wParam) return 0;
 354         else if (!(wndPtr->dwStyle & WS_VISIBLE) && !wParam) return 0;
 355         ShowWindow( wndPtr->hwndSelf, wParam ? SW_SHOWNOACTIVATE : SW_HIDE );
 356         break;
 357
 358     case WM_CANCELMODE:
 359         if (wndPtr->parent == WIN_GetDesktop()) EndMenu();
 360         if (GetCapture() == wndPtr->hwndSelf) ReleaseCapture();
 361         break;
 362
 363     case WM_VKEYTOITEM:
 364     case WM_CHARTOITEM:
 365         return -1;
 366
 367     case WM_DROPOBJECT:
 368         return DRAG_FILE;
 369
 370     case WM_QUERYDROPOBJECT:
 371         if (wndPtr->dwExStyle & WS_EX_ACCEPTFILES) return 1;
 372         break;
 373
 374     case WM_QUERYDRAGICON:
 375         {
 376             HICON16 hIcon=0;
 377             UINT16 len;
 378
 379             if( (hIcon=wndPtr->class->hCursor) ) return (LRESULT)hIcon;
 380             for(len=1; len<64; len++)
 381                 if((hIcon=LoadIcon16(wndPtr->hInstance,MAKEINTRESOURCE16(len))))
 382                     return (LRESULT)hIcon;
 383             return (LRESULT)LoadIcon16(0,IDI_APPLICATION16);
 384         }
 385         break;
 386
 387     case WM_ISACTIVEICON:
 388         return ((wndPtr->flags & WIN_NCACTIVATED) != 0);
 389
 390     case WM_QUERYOPEN:
 391     case WM_QUERYENDSESSION:
 392         return 1;
 393     }
 394     return 0;
 395 }
 396
 397
 398
 399 /***********************************************************************
 400  *           DefWindowProc16   (USER.107)
 401  */
 402 LRESULT WINAPI DefWindowProc16( HWND16 hwnd, UINT16 msg, WPARAM16 wParam,
 403                                 LPARAM lParam )
 404 {
 405     WND * wndPtr = WIN_FindWndPtr( hwnd );
 406     LRESULT result = 0;
 407
 408     if (!wndPtr) return 0;
 409     SPY_EnterMessage( SPY_DEFWNDPROC16, hwnd, msg, wParam, lParam );
 410
 411     switch(msg)
 412     {
 413     case WM_NCCREATE:
 414         {
 415             CREATESTRUCT16 *cs = (CREATESTRUCT16 *)PTR_SEG_TO_LIN(lParam);
 416             if (cs->lpszName)
 417                 DEFWND_SetText( wndPtr, (LPSTR)PTR_SEG_TO_LIN(cs->lpszName) );
 418             result = 1;
 419         }
 420         break;
 421
 422     case WM_NCCALCSIZE:
 423         {
 424             RECT rect32;
 425             CONV_RECT16TO32( (RECT16 *)PTR_SEG_TO_LIN(lParam), &rect32 );
 426             result = NC_HandleNCCalcSize( wndPtr, &rect32 );
 427             CONV_RECT32TO16( &rect32, (RECT16 *)PTR_SEG_TO_LIN(lParam) );
 428         }
 429         break;
 430
 431     case WM_WINDOWPOSCHANGING:
 432         result = WINPOS_HandleWindowPosChanging16( wndPtr,
 433                                        (WINDOWPOS16 *)PTR_SEG_TO_LIN(lParam) );
 434         break;
 435
 436     case WM_WINDOWPOSCHANGED:
 437         {
 438             WINDOWPOS16 * winPos = (WINDOWPOS16 *)PTR_SEG_TO_LIN(lParam);
 439             DEFWND_HandleWindowPosChanged( wndPtr, winPos->flags );
 440         }
 441         break;
 442
 443     case WM_GETTEXT:
 444         if (wParam && wndPtr->text)
 445         {
 446             lstrcpynA( (LPSTR)PTR_SEG_TO_LIN(lParam), wndPtr->text, wParam );
 447             result = (LRESULT)strlen( (LPSTR)PTR_SEG_TO_LIN(lParam) );
 448         }
 449         break;
 450
 451     case WM_SETTEXT:
 452         DEFWND_SetText( wndPtr, (LPSTR)PTR_SEG_TO_LIN(lParam) );
 453         if( wndPtr->dwStyle & WS_CAPTION ) NC_HandleNCPaint( hwnd , (HRGN)1 );
 454         break;
 455
 456     default:
 457         result = DEFWND_DefWinProc( wndPtr, msg, wParam, lParam );
 458         break;
 459     }
 460
 461     SPY_ExitMessage( SPY_RESULT_DEFWND16, hwnd, msg, result );
 462     return result;
 463 }
 464
 465
 466 /***********************************************************************
 467  *  DefWindowProc32A [USER32.126]
 468  *
 469  */
 470 LRESULT WINAPI DefWindowProcA( HWND hwnd, UINT msg, WPARAM wParam,
 471                                  LPARAM lParam )
 472 {
 473     WND * wndPtr = WIN_FindWndPtr( hwnd );
 474     LRESULT result = 0;
 475
 476     if (!wndPtr) return 0;
 477     SPY_EnterMessage( SPY_DEFWNDPROC, hwnd, msg, wParam, lParam );
 478
 479     switch(msg)
 480     {
 481     case WM_NCCREATE:
 482         {
 483             CREATESTRUCTA *cs = (CREATESTRUCTA *)lParam;
 484             if (cs->lpszName) DEFWND_SetText( wndPtr, cs->lpszName );
 485             result = 1;
 486         }
 487         break;
 488
 489     case WM_NCCALCSIZE:
 490         result = NC_HandleNCCalcSize( wndPtr, (RECT *)lParam );
 491         break;
 492
 493     case WM_WINDOWPOSCHANGING:
 494         result = WINPOS_HandleWindowPosChanging( wndPtr,
 495                                                    (WINDOWPOS *)lParam );
 496         break;
 497
 498     case WM_WINDOWPOSCHANGED:
 499         {
 500             WINDOWPOS * winPos = (WINDOWPOS *)lParam;
 501             DEFWND_HandleWindowPosChanged( wndPtr, winPos->flags );
 502         }
 503         break;
 504
 505     case WM_GETTEXT:
 506         if (wParam && wndPtr->text)
 507         {
 508             lstrcpynA( (LPSTR)lParam, wndPtr->text, wParam );
 509             result = (LRESULT)strlen( (LPSTR)lParam );
 510         }
 511         break;
 512
 513     case WM_SETTEXT:
 514         DEFWND_SetText( wndPtr, (LPSTR)lParam );
 515         NC_HandleNCPaint( hwnd , (HRGN)1 );  /* Repaint caption */
 516         break;
 517
 518     default:
 519         result = DEFWND_DefWinProc( wndPtr, msg, wParam, lParam );
 520         break;
 521     }
 522
 523     SPY_ExitMessage( SPY_RESULT_DEFWND, hwnd, msg, result );
 524     return result;
 525 }
 526
 527
 528 /***********************************************************************
 529  * DefWindowProc32W [USER32.127] Calls default window message handler
 530  *
 531  * Calls default window procedure for messages not processed
 532  *  by application.
 533  *
 534  *  RETURNS
 535  *     Return value is dependent upon the message.
 536 */
 537 LRESULT WINAPI DefWindowProcW(
 538     HWND hwnd,      /* [in] window procedure recieving message */
 539     UINT msg,       /* [in] message identifier */
 540     WPARAM wParam,  /* [in] first message parameter */
 541     LPARAM lParam )   /* [in] second message parameter */
 542 {
 543     LRESULT result;
 544
 545     switch(msg)
 546     {
 547     case WM_NCCREATE:
 548         {
 549             CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
 550             if (cs->lpszName)
 551             {
 552                 WND *wndPtr = WIN_FindWndPtr( hwnd );
 553                 LPSTR str = HEAP_strdupWtoA(GetProcessHeap(), 0, cs->lpszName);
 554                 DEFWND_SetText( wndPtr, str );
 555                 HeapFree( GetProcessHeap(), 0, str );
 556             }
 557             result = 1;
 558         }
 559         break;
 560
 561     case WM_GETTEXT:
 562         {
 563             LPSTR str = HeapAlloc( GetProcessHeap(), 0, wParam );
 564             result = DefWindowProcA( hwnd, msg, wParam, (LPARAM)str );
 565             lstrcpynAtoW( (LPWSTR)lParam, str, wParam );
 566             HeapFree( GetProcessHeap(), 0, str );
 567         }
 568         break;
 569
 570     case WM_SETTEXT:
 571         {
 572             LPSTR str = HEAP_strdupWtoA( GetProcessHeap(), 0, (LPWSTR)lParam );
 573             result = DefWindowProcA( hwnd, msg, wParam, (LPARAM)str );
 574             HeapFree( GetProcessHeap(), 0, str );
 575         }
 576         break;
 577
 578     default:
 579         result = DefWindowProcA( hwnd, msg, wParam, lParam );
 580         break;
 581     }
 582     return result;
 583 }