dlls/user32/msgbox.c

   1 /*
   2  * Message boxes
   3  *
   4  * Copyright 1995 Bernd Schmidt
   5  * Copyright 2004 Ivan Leo Puoti, Juan Lang
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23 #include <string.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winternl.h"
  29 #include "dlgs.h"
  30 #include "user_private.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(dialog);
  34 WINE_DECLARE_DEBUG_CHANNEL(msgbox);
  35
  36 #define MSGBOX_IDICON stc1
  37 #define MSGBOX_IDTEXT 100
  38 #define IDS_ERROR     2
  39
  40 struct ThreadWindows
  41 {
  42     UINT numHandles;
  43     UINT numAllocs;
  44     HWND *handles;
  45 };
  46
  47 static BOOL CALLBACK MSGBOX_EnumProc(HWND hwnd, LPARAM lParam)
  48 {
  49     struct ThreadWindows *threadWindows = (struct ThreadWindows *)lParam;
  50
  51     if (!EnableWindow(hwnd, FALSE))
  52     {
  53         if(threadWindows->numHandles >= threadWindows->numAllocs)
  54         {
  55             threadWindows->handles = HeapReAlloc(GetProcessHeap(), 0, threadWindows->handles,
  56                                                  (threadWindows->numAllocs*2)*sizeof(HWND));
  57             threadWindows->numAllocs *= 2;
  58         }
  59         threadWindows->handles[threadWindows->numHandles++]=hwnd;
  60     }
  61    return TRUE;
  62 }
  63
  64 static void MSGBOX_OnInit(HWND hwnd, LPMSGBOXPARAMSW lpmb)
  65 {
  66     HFONT hPrevFont;
  67     RECT rect;
  68     HWND hItem;
  69     HDC hdc;
  70     int i, buttons;
  71     int bspace, bw, bh, theight, tleft, wwidth, wheight, wleft, wtop, bpos;
  72     int borheight, borwidth, iheight, ileft, iwidth, twidth, tiheight;
  73     NONCLIENTMETRICSW nclm;
  74     HMONITOR monitor = 0;
  75     MONITORINFO mon_info;
  76     LPCWSTR lpszText;
  77     WCHAR *buffer = NULL;
  78     const WCHAR *ptr;
  79
  80     /* Index the order the buttons need to appear to an ID* constant */
  81     static const int buttonOrder[10] = { IDYES, IDNO, IDOK, IDABORT, IDRETRY,
  82                                          IDCANCEL, IDIGNORE, IDTRYAGAIN,
  83                                          IDCONTINUE, IDHELP };
  84
  85     nclm.cbSize = sizeof(nclm);
  86     SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, 0, &nclm, 0);
  87
  88     if (!IS_INTRESOURCE(lpmb->lpszCaption)) {
  89        SetWindowTextW(hwnd, lpmb->lpszCaption);
  90     } else {
  91         UINT len = LoadStringW( lpmb->hInstance, LOWORD(lpmb->lpszCaption), (LPWSTR)&ptr, 0 );
  92         if (!len) len = LoadStringW( user32_module, IDS_ERROR, (LPWSTR)&ptr, 0 );
  93         buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
  94         if (buffer)
  95         {
  96             memcpy( buffer, ptr, len * sizeof(WCHAR) );
  97             buffer[len] = 0;
  98             SetWindowTextW( hwnd, buffer );
  99             HeapFree( GetProcessHeap(), 0, buffer );
 100             buffer = NULL;
 101         }
 102     }
 103     if (IS_INTRESOURCE(lpmb->lpszText)) {
 104         UINT len = LoadStringW( lpmb->hInstance, LOWORD(lpmb->lpszText), (LPWSTR)&ptr, 0 );
 105         lpszText = buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
 106         if (buffer)
 107         {
 108             memcpy( buffer, ptr, len * sizeof(WCHAR) );
 109             buffer[len] = 0;
 110         }
 111     } else {
 112        lpszText = lpmb->lpszText;
 113     }
 114
 115     TRACE_(msgbox)("%s\n", debugstr_w(lpszText));
 116     SetWindowTextW(GetDlgItem(hwnd, MSGBOX_IDTEXT), lpszText);
 117
 118     /* Remove not selected buttons */
 119     switch(lpmb->dwStyle & MB_TYPEMASK) {
 120     case MB_OK:
 121         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 122         /* fall through */
 123     case MB_OKCANCEL:
 124         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 125         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 126         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 127         DestroyWindow(GetDlgItem(hwnd, IDYES));
 128         DestroyWindow(GetDlgItem(hwnd, IDNO));
 129         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 130         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 131         break;
 132     case MB_ABORTRETRYIGNORE:
 133         DestroyWindow(GetDlgItem(hwnd, IDOK));
 134         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 135         DestroyWindow(GetDlgItem(hwnd, IDYES));
 136         DestroyWindow(GetDlgItem(hwnd, IDNO));
 137         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 138         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 139         break;
 140     case MB_YESNO:
 141         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 142         /* fall through */
 143     case MB_YESNOCANCEL:
 144         DestroyWindow(GetDlgItem(hwnd, IDOK));
 145         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 146         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 147         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 148         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 149         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 150         break;
 151     case MB_RETRYCANCEL:
 152         DestroyWindow(GetDlgItem(hwnd, IDOK));
 153         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 154         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 155         DestroyWindow(GetDlgItem(hwnd, IDYES));
 156         DestroyWindow(GetDlgItem(hwnd, IDNO));
 157         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 158         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 159         break;
 160     case MB_CANCELTRYCONTINUE:
 161         DestroyWindow(GetDlgItem(hwnd, IDOK));
 162         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 163         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 164         DestroyWindow(GetDlgItem(hwnd, IDYES));
 165         DestroyWindow(GetDlgItem(hwnd, IDNO));
 166         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 167     }
 168     /* Set the icon */
 169     switch(lpmb->dwStyle & MB_ICONMASK) {
 170     case MB_ICONEXCLAMATION:
 171         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 172                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_EXCLAMATION), 0);
 173         break;
 174     case MB_ICONQUESTION:
 175         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 176                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_QUESTION), 0);
 177         break;
 178     case MB_ICONASTERISK:
 179         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 180                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_ASTERISK), 0);
 181         break;
 182     case MB_ICONHAND:
 183       SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 184                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_HAND), 0);
 185       break;
 186     case MB_USERICON:
 187       SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 188                           (WPARAM)LoadIconW(lpmb->hInstance, lpmb->lpszIcon), 0);
 189       break;
 190     default:
 191         /* By default, Windows 95/98/NT do not associate an icon to message boxes.
 192          * So wine should do the same.
 193          */
 194         break;
 195     }
 196
 197     /* Remove Help button unless MB_HELP supplied */
 198     if (!(lpmb->dwStyle & MB_HELP)) {
 199         DestroyWindow(GetDlgItem(hwnd, IDHELP));
 200     }
 201
 202     /* Position everything */
 203     GetWindowRect(hwnd, &rect);
 204     borheight = rect.bottom - rect.top;
 205     borwidth  = rect.right - rect.left;
 206     GetClientRect(hwnd, &rect);
 207     borheight -= rect.bottom - rect.top;
 208     borwidth  -= rect.right - rect.left;
 209
 210     /* Get the icon height */
 211     GetWindowRect(GetDlgItem(hwnd, MSGBOX_IDICON), &rect);
 212     MapWindowPoints(0, hwnd, (LPPOINT)&rect, 2);
 213     if (!(lpmb->dwStyle & MB_ICONMASK))
 214     {
 215         rect.bottom = rect.top;
 216         rect.right = rect.left;
 217     }
 218     iheight = rect.bottom - rect.top;
 219     ileft = rect.left;
 220     iwidth = rect.right - ileft;
 221
 222     hdc = GetDC(hwnd);
 223     hPrevFont = SelectObject( hdc, (HFONT)SendMessageW( hwnd, WM_GETFONT, 0, 0 ));
 224
 225     /* Get the number of visible buttons and their size */
 226     bh = bw = 1; /* Minimum button sizes */
 227     for (buttons = 0, i = IDOK; i <= IDCONTINUE; i++)
 228     {
 229         if (i == IDCLOSE) continue; /* No CLOSE button */
 230         hItem = GetDlgItem(hwnd, i);
 231         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE)
 232         {
 233             WCHAR buttonText[1024];
 234             int w, h;
 235             buttons++;
 236             if (GetWindowTextW(hItem, buttonText, 1024))
 237             {
 238                 DrawTextW( hdc, buttonText, -1, &rect, DT_LEFT | DT_EXPANDTABS | DT_CALCRECT);
 239                 h = rect.bottom - rect.top;
 240                 w = rect.right - rect.left;
 241                 if (h > bh) bh = h;
 242                 if (w > bw)  bw = w ;
 243             }
 244         }
 245     }
 246     bw = max(bw, bh * 2);
 247     /* Button white space */
 248     bh = bh * 2;
 249     bw = bw * 2;
 250     bspace = bw/3; /* Space between buttons */
 251
 252     /* Get the text size */
 253     GetClientRect(GetDlgItem(hwnd, MSGBOX_IDTEXT), &rect);
 254     rect.top = rect.left = rect.bottom = 0;
 255     DrawTextW( hdc, lpszText, -1, &rect,
 256                DT_LEFT | DT_EXPANDTABS | DT_WORDBREAK | DT_CALCRECT);
 257     /* Min text width corresponds to space for the buttons */
 258     tleft = ileft;
 259     if (iwidth) tleft += ileft + iwidth;
 260     twidth = max((bw + bspace) * buttons + bspace - tleft, rect.right);
 261     theight = rect.bottom;
 262
 263     SelectObject(hdc, hPrevFont);
 264     ReleaseDC(hwnd, hdc);
 265
 266     tiheight = 16 + max(iheight, theight);
 267     wwidth  = tleft + twidth + ileft + borwidth;
 268     wheight = 8 + tiheight + bh + borheight;
 269
 270     /* Message boxes are always desktop centered, so query desktop size and center window */
 271     monitor = MonitorFromWindow(lpmb->hwndOwner ? lpmb->hwndOwner : GetActiveWindow(), MONITOR_DEFAULTTOPRIMARY);
 272     mon_info.cbSize = sizeof(mon_info);
 273     GetMonitorInfoW(monitor, &mon_info);
 274     wleft = (mon_info.rcWork.left + mon_info.rcWork.right - wwidth) / 2;
 275     wtop = (mon_info.rcWork.top + mon_info.rcWork.bottom - wheight) / 2;
 276
 277     /* Resize and center the window */
 278     SetWindowPos(hwnd, 0, wleft, wtop, wwidth, wheight,
 279                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 280
 281     /* Position the icon */
 282     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDICON), 0, ileft, (tiheight - iheight) / 2, 0, 0,
 283                  SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 284
 285     /* Position the text */
 286     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDTEXT), 0, tleft, (tiheight - theight) / 2, twidth, theight,
 287                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 288
 289     /* Position the buttons */
 290     bpos = (wwidth - (bw + bspace) * buttons + bspace) / 2;
 291     for (buttons = i = 0; i < (sizeof(buttonOrder) / sizeof(buttonOrder[0])); i++) {
 292
 293         /* Convert the button order to ID* value to order for the buttons */
 294         hItem = GetDlgItem(hwnd, buttonOrder[i]);
 295         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE) {
 296             if (buttons++ == ((lpmb->dwStyle & MB_DEFMASK) >> 8)) {
 297                 SetFocus(hItem);
 298                 SendMessageW( hItem, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 299             }
 300             SetWindowPos(hItem, 0, bpos, tiheight, bw, bh,
 301                          SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREDRAW);
 302             bpos += bw + bspace;
 303         }
 304     }
 305
 306     /*handle modal message boxes*/
 307     if (((lpmb->dwStyle & MB_TASKMODAL) && (lpmb->hwndOwner==NULL)) || (lpmb->dwStyle & MB_SYSTEMMODAL))
 308         SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 309
 310     HeapFree( GetProcessHeap(), 0, buffer );
 311 }
 312
 313
 314 /**************************************************************************
 315  *           MSGBOX_DlgProc
 316  *
 317  * Dialog procedure for message boxes.
 318  */
 319 static INT_PTR CALLBACK MSGBOX_DlgProc( HWND hwnd, UINT message,
 320                                         WPARAM wParam, LPARAM lParam )
 321 {
 322   switch(message) {
 323    case WM_INITDIALOG:
 324    {
 325        LPMSGBOXPARAMSW mbp = (LPMSGBOXPARAMSW)lParam;
 326        SetWindowContextHelpId(hwnd, mbp->dwContextHelpId);
 327        MSGBOX_OnInit(hwnd, mbp);
 328        SetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK", mbp->lpfnMsgBoxCallback);
 329        break;
 330    }
 331
 332    case WM_COMMAND:
 333     switch (LOWORD(wParam))
 334     {
 335      case IDOK:
 336      case IDCANCEL:
 337      case IDABORT:
 338      case IDRETRY:
 339      case IDIGNORE:
 340      case IDYES:
 341      case IDNO:
 342      case IDTRYAGAIN:
 343      case IDCONTINUE:
 344       EndDialog(hwnd, wParam);
 345       break;
 346      case IDHELP:
 347       FIXME("Help button not supported yet\n");
 348       break;
 349     }
 350     break;
 351
 352     case WM_HELP:
 353     {
 354         MSGBOXCALLBACK callback = (MSGBOXCALLBACK)GetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK");
 355         HELPINFO hi;
 356
 357         memcpy(&hi, (void *)lParam, sizeof(hi));
 358         hi.dwContextId = GetWindowContextHelpId(hwnd);
 359
 360         if (callback)
 361             callback(&hi);
 362         else
 363             SendMessageW(GetWindow(hwnd, GW_OWNER), WM_HELP, 0, (LPARAM)&hi);
 364         break;
 365    }
 366
 367    default:
 368      /* Ok. Ignore all the other messages */
 369      TRACE("Message number 0x%04x is being ignored.\n", message);
 370     break;
 371   }
 372   return 0;
 373 }
 374
 375
 376 /**************************************************************************
 377  *              MessageBoxA (USER32.@)
 378  */
 379 INT WINAPI MessageBoxA(HWND hWnd, LPCSTR text, LPCSTR title, UINT type)
 380 {
 381     return MessageBoxExA(hWnd, text, title, type, LANG_NEUTRAL);
 382 }
 383
 384
 385 /**************************************************************************
 386  *              MessageBoxW (USER32.@)
 387  */
 388 INT WINAPI MessageBoxW( HWND hwnd, LPCWSTR text, LPCWSTR title, UINT type )
 389 {
 390     return MessageBoxExW(hwnd, text, title, type, LANG_NEUTRAL);
 391 }
 392
 393
 394 /**************************************************************************
 395  *              MessageBoxExA (USER32.@)
 396  */
 397 INT WINAPI MessageBoxExA( HWND hWnd, LPCSTR text, LPCSTR title,
 398                               UINT type, WORD langid )
 399 {
 400     MSGBOXPARAMSA msgbox;
 401
 402     msgbox.cbSize = sizeof(msgbox);
 403     msgbox.hwndOwner = hWnd;
 404     msgbox.hInstance = 0;
 405     msgbox.lpszText = text;
 406     msgbox.lpszCaption = title;
 407     msgbox.dwStyle = type;
 408     msgbox.lpszIcon = NULL;
 409     msgbox.dwContextHelpId = 0;
 410     msgbox.lpfnMsgBoxCallback = NULL;
 411     msgbox.dwLanguageId = langid;
 412
 413     return MessageBoxIndirectA(&msgbox);
 414 }
 415
 416 /**************************************************************************
 417  *              MessageBoxExW (USER32.@)
 418  */
 419 INT WINAPI MessageBoxExW( HWND hWnd, LPCWSTR text, LPCWSTR title,
 420                               UINT type, WORD langid )
 421 {
 422     MSGBOXPARAMSW msgbox;
 423
 424     msgbox.cbSize = sizeof(msgbox);
 425     msgbox.hwndOwner = hWnd;
 426     msgbox.hInstance = 0;
 427     msgbox.lpszText = text;
 428     msgbox.lpszCaption = title;
 429     msgbox.dwStyle = type;
 430     msgbox.lpszIcon = NULL;
 431     msgbox.dwContextHelpId = 0;
 432     msgbox.lpfnMsgBoxCallback = NULL;
 433     msgbox.dwLanguageId = langid;
 434
 435     return MessageBoxIndirectW(&msgbox);
 436 }
 437
 438 /**************************************************************************
 439  *      MessageBoxTimeoutA (USER32.@)
 440  */
 441 INT WINAPI MessageBoxTimeoutA( HWND hWnd, LPCSTR text, LPCSTR title,
 442                                UINT type, WORD langid, DWORD timeout )
 443 {
 444     FIXME("timeout not supported (%u)\n", timeout);
 445     return MessageBoxExA( hWnd, text, title, type, langid );
 446 }
 447
 448 /**************************************************************************
 449  *      MessageBoxTimeoutW (USER32.@)
 450  */
 451 INT WINAPI MessageBoxTimeoutW( HWND hWnd, LPCWSTR text, LPCWSTR title,
 452                                UINT type, WORD langid, DWORD timeout )
 453 {
 454     FIXME("timeout not supported (%u)\n", timeout);
 455     return MessageBoxExW( hWnd, text, title, type, langid );
 456 }
 457
 458 /**************************************************************************
 459  *              MessageBoxIndirectA (USER32.@)
 460  */
 461 INT WINAPI MessageBoxIndirectA( LPMSGBOXPARAMSA msgbox )
 462 {
 463     MSGBOXPARAMSW msgboxW;
 464     UNICODE_STRING textW, captionW, iconW;
 465     int ret;
 466
 467     if (IS_INTRESOURCE(msgbox->lpszText))
 468         textW.Buffer = (LPWSTR)msgbox->lpszText;
 469     else
 470         RtlCreateUnicodeStringFromAsciiz(&textW, msgbox->lpszText);
 471     if (IS_INTRESOURCE(msgbox->lpszCaption))
 472         captionW.Buffer = (LPWSTR)msgbox->lpszCaption;
 473     else
 474         RtlCreateUnicodeStringFromAsciiz(&captionW, msgbox->lpszCaption);
 475
 476     if (msgbox->dwStyle & MB_USERICON)
 477     {
 478         if (IS_INTRESOURCE(msgbox->lpszIcon))
 479             iconW.Buffer = (LPWSTR)msgbox->lpszIcon;
 480         else
 481             RtlCreateUnicodeStringFromAsciiz(&iconW, msgbox->lpszIcon);
 482     }
 483     else
 484         iconW.Buffer = NULL;
 485
 486     msgboxW.cbSize = sizeof(msgboxW);
 487     msgboxW.hwndOwner = msgbox->hwndOwner;
 488     msgboxW.hInstance = msgbox->hInstance;
 489     msgboxW.lpszText = textW.Buffer;
 490     msgboxW.lpszCaption = captionW.Buffer;
 491     msgboxW.dwStyle = msgbox->dwStyle;
 492     msgboxW.lpszIcon = iconW.Buffer;
 493     msgboxW.dwContextHelpId = msgbox->dwContextHelpId;
 494     msgboxW.lpfnMsgBoxCallback = msgbox->lpfnMsgBoxCallback;
 495     msgboxW.dwLanguageId = msgbox->dwLanguageId;
 496
 497     ret = MessageBoxIndirectW(&msgboxW);
 498
 499     if (!IS_INTRESOURCE(textW.Buffer)) RtlFreeUnicodeString(&textW);
 500     if (!IS_INTRESOURCE(captionW.Buffer)) RtlFreeUnicodeString(&captionW);
 501     if (!IS_INTRESOURCE(iconW.Buffer)) RtlFreeUnicodeString(&iconW);
 502     return ret;
 503 }
 504
 505 /**************************************************************************
 506  *              MessageBoxIndirectW (USER32.@)
 507  */
 508 INT WINAPI MessageBoxIndirectW( LPMSGBOXPARAMSW msgbox )
 509 {
 510     LPVOID tmplate;
 511     HRSRC hRes;
 512     int ret;
 513     UINT i;
 514     struct ThreadWindows threadWindows;
 515     static const WCHAR msg_box_res_nameW[] = { 'M','S','G','B','O','X',0 };
 516
 517     if (!(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG,
 518                                  msg_box_res_nameW, msgbox->dwLanguageId)))
 519     {
 520         if (!msgbox->dwLanguageId ||
 521             !(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG, msg_box_res_nameW, LANG_NEUTRAL)))
 522             return 0;
 523     }
 524     if (!(tmplate = LoadResource(user32_module, hRes)))
 525         return 0;
 526
 527     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 528     {
 529         threadWindows.numHandles = 0;
 530         threadWindows.numAllocs = 10;
 531         threadWindows.handles = HeapAlloc(GetProcessHeap(), 0, 10*sizeof(HWND));
 532         EnumThreadWindows(GetCurrentThreadId(), MSGBOX_EnumProc, (LPARAM)&threadWindows);
 533     }
 534
 535     ret=DialogBoxIndirectParamW(msgbox->hInstance, tmplate,
 536                                 msgbox->hwndOwner, MSGBOX_DlgProc, (LPARAM)msgbox);
 537
 538     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 539     {
 540         for (i = 0; i < threadWindows.numHandles; i++)
 541             EnableWindow(threadWindows.handles[i], TRUE);
 542         HeapFree(GetProcessHeap(), 0, threadWindows.handles);
 543     }
 544     return ret;
 545 }