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 1088
  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 HFONT MSGBOX_OnInit(HWND hwnd, LPMSGBOXPARAMSW lpmb)
  65 {
  66     HFONT hFont = 0, hPrevFont = 0;
  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 buf[256];
  78     /* Index the order the buttons need to appear to an ID* constant */
  79     static const int buttonOrder[10] = { 6, 7, 1, 3, 4, 2, 5, 10, 11, 9 };
  80
  81     nclm.cbSize = sizeof(nclm);
  82     SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, 0, &nclm, 0);
  83     hFont = CreateFontIndirectW (&nclm.lfMessageFont);
  84     /* set button font */
  85     for (i=1; i < 12; i++)
  86         /* No button 8 (Close) */
  87         if (i != 8) {
  88             SendDlgItemMessageW (hwnd, i, WM_SETFONT, (WPARAM)hFont, 0);
  89         }
  90     /* set text font */
  91     SendDlgItemMessageW (hwnd, MSGBOX_IDTEXT, WM_SETFONT, (WPARAM)hFont, 0);
  92
  93     if (HIWORD(lpmb->lpszCaption)) {
  94        SetWindowTextW(hwnd, lpmb->lpszCaption);
  95     } else {
  96        UINT res_id = LOWORD(lpmb->lpszCaption);
  97        if (res_id)
  98        {
  99            if (LoadStringW(lpmb->hInstance, res_id, buf, 256))
 100                SetWindowTextW(hwnd, buf);
 101        }
 102        else
 103        {
 104            if (LoadStringW(user32_module, IDS_ERROR, buf, 256))
 105                SetWindowTextW(hwnd, buf);
 106        }
 107     }
 108     if (HIWORD(lpmb->lpszText)) {
 109        lpszText = lpmb->lpszText;
 110     } else {
 111        lpszText = buf;
 112        if (!LoadStringW(lpmb->hInstance, LOWORD(lpmb->lpszText), buf, 256))
 113           *buf = 0;     /* FIXME ?? */
 114     }
 115
 116     TRACE_(msgbox)("%s\n", debugstr_w(lpszText));
 117     SetWindowTextW(GetDlgItem(hwnd, MSGBOX_IDTEXT), lpszText);
 118
 119     /* Hide not selected buttons */
 120     switch(lpmb->dwStyle & MB_TYPEMASK) {
 121     case MB_OK:
 122         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 123         /* fall through */
 124     case MB_OKCANCEL:
 125         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 126         ShowWindow(GetDlgItem(hwnd, IDRETRY), SW_HIDE);
 127         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 128         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 129         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 130         ShowWindow(GetDlgItem(hwnd, IDTRYAGAIN), SW_HIDE);
 131         ShowWindow(GetDlgItem(hwnd, IDCONTINUE), SW_HIDE);
 132         break;
 133     case MB_ABORTRETRYIGNORE:
 134         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 135         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 136         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 137         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 138         ShowWindow(GetDlgItem(hwnd, IDCONTINUE), SW_HIDE);
 139         ShowWindow(GetDlgItem(hwnd, IDTRYAGAIN), SW_HIDE);
 140         break;
 141     case MB_YESNO:
 142         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 143         /* fall through */
 144     case MB_YESNOCANCEL:
 145         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 146         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 147         ShowWindow(GetDlgItem(hwnd, IDRETRY), SW_HIDE);
 148         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 149         ShowWindow(GetDlgItem(hwnd, IDCONTINUE), SW_HIDE);
 150         ShowWindow(GetDlgItem(hwnd, IDTRYAGAIN), SW_HIDE);
 151         break;
 152     case MB_RETRYCANCEL:
 153         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 154         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 155         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 156         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 157         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 158         ShowWindow(GetDlgItem(hwnd, IDCONTINUE), SW_HIDE);
 159         ShowWindow(GetDlgItem(hwnd, IDTRYAGAIN), SW_HIDE);
 160         break;
 161     case MB_CANCELTRYCONTINUE:
 162         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 163         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 164         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 165         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 166         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 167         ShowWindow(GetDlgItem(hwnd, IDRETRY), SW_HIDE);
 168     }
 169     /* Set the icon */
 170     switch(lpmb->dwStyle & MB_ICONMASK) {
 171     case MB_ICONEXCLAMATION:
 172         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 173                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_EXCLAMATION), 0);
 174         break;
 175     case MB_ICONQUESTION:
 176         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 177                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_QUESTION), 0);
 178         break;
 179     case MB_ICONASTERISK:
 180         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 181                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_ASTERISK), 0);
 182         break;
 183     case MB_ICONHAND:
 184       SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 185                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_HAND), 0);
 186       break;
 187     case MB_USERICON:
 188       SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 189                           (WPARAM)LoadIconW(lpmb->hInstance, lpmb->lpszIcon), 0);
 190       break;
 191     default:
 192         /* By default, Windows 95/98/NT do not associate an icon to message boxes.
 193          * So wine should do the same.
 194          */
 195         break;
 196     }
 197
 198     /* Hide Help button unless MB_HELP supplied */
 199     if (!(lpmb->dwStyle & MB_HELP)) {
 200         ShowWindow(GetDlgItem(hwnd, IDHELP), SW_HIDE);
 201     }
 202
 203     /* Position everything */
 204     GetWindowRect(hwnd, &rect);
 205     borheight = rect.bottom - rect.top;
 206     borwidth  = rect.right - rect.left;
 207     GetClientRect(hwnd, &rect);
 208     borheight -= rect.bottom - rect.top;
 209     borwidth  -= rect.right - rect.left;
 210
 211     /* Get the icon height */
 212     GetWindowRect(GetDlgItem(hwnd, MSGBOX_IDICON), &rect);
 213     MapWindowPoints(0, hwnd, (LPPOINT)&rect, 2);
 214     if (!(lpmb->dwStyle & MB_ICONMASK))
 215     {
 216         rect.bottom = rect.top;
 217         rect.right = rect.left;
 218     }
 219     iheight = rect.bottom - rect.top;
 220     ileft = rect.left;
 221     iwidth = rect.right - ileft;
 222
 223     hdc = GetDC(hwnd);
 224     if (hFont)
 225         hPrevFont = SelectObject(hdc, hFont);
 226
 227     /* Get the number of visible buttons and their size */
 228     bh = bw = 1; /* Minimum button sizes */
 229     for (buttons = 0, i = 1; i < 12; i++)
 230     {
 231         if (i == 8) continue; /* No CLOSE button */
 232         hItem = GetDlgItem(hwnd, i);
 233         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE)
 234         {
 235             WCHAR buttonText[1024];
 236             int w, h;
 237             buttons++;
 238             if (GetWindowTextW(hItem, buttonText, 1024))
 239             {
 240                 DrawTextW( hdc, buttonText, -1, &rect, DT_LEFT | DT_EXPANDTABS | DT_CALCRECT);
 241                 h = rect.bottom - rect.top;
 242                 w = rect.right - rect.left;
 243                 if (h > bh) bh = h;
 244                 if (w > bw)  bw = w ;
 245             }
 246         }
 247     }
 248     bw = max(bw, bh * 2);
 249     /* Button white space */
 250     bh = bh * 2;
 251     bw = bw * 2;
 252     bspace = bw/3; /* Space between buttons */
 253
 254     /* Get the text size */
 255     GetClientRect(GetDlgItem(hwnd, MSGBOX_IDTEXT), &rect);
 256     rect.top = rect.left = rect.bottom = 0;
 257     DrawTextW( hdc, lpszText, -1, &rect,
 258                DT_LEFT | DT_EXPANDTABS | DT_WORDBREAK | DT_CALCRECT);
 259     /* Min text width corresponds to space for the buttons */
 260     tleft = ileft;
 261     if (iwidth) tleft += ileft + iwidth;
 262     twidth = max((bw + bspace) * buttons + bspace - tleft, rect.right);
 263     theight = rect.bottom;
 264
 265     if (hFont)
 266         SelectObject(hdc, hPrevFont);
 267     ReleaseDC(hwnd, hdc);
 268
 269     tiheight = 16 + max(iheight, theight);
 270     wwidth  = tleft + twidth + ileft + borwidth;
 271     wheight = 8 + tiheight + bh + borheight;
 272
 273     /* Message boxes are always desktop centered, so query desktop size and center window */
 274     monitor = MonitorFromWindow(lpmb->hwndOwner ? lpmb->hwndOwner : GetActiveWindow(), MONITOR_DEFAULTTOPRIMARY);
 275     mon_info.cbSize = sizeof(mon_info);
 276     GetMonitorInfoW(monitor, &mon_info);
 277     wleft = (mon_info.rcWork.left + mon_info.rcWork.right - wwidth) / 2;
 278     wtop = (mon_info.rcWork.top + mon_info.rcWork.bottom - wheight) / 2;
 279
 280     /* Resize and center the window */
 281     SetWindowPos(hwnd, 0, wleft, wtop, wwidth, wheight,
 282                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 283
 284     /* Position the icon */
 285     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDICON), 0, ileft, (tiheight - iheight) / 2, 0, 0,
 286                  SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 287
 288     /* Position the text */
 289     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDTEXT), 0, tleft, (tiheight - theight) / 2, twidth, theight,
 290                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 291
 292     /* Position the buttons */
 293     bpos = (wwidth - (bw + bspace) * buttons + bspace) / 2;
 294     for (buttons = i = 0; i < (sizeof(buttonOrder) / sizeof(buttonOrder[0])); i++) {
 295
 296         /* Convert the button order to ID* value to order for the buttons */
 297         hItem = GetDlgItem(hwnd, buttonOrder[i]);
 298         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE) {
 299             if (buttons++ == ((lpmb->dwStyle & MB_DEFMASK) >> 8)) {
 300                 SetFocus(hItem);
 301                 SendMessageW( hItem, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 302             }
 303             SetWindowPos(hItem, 0, bpos, tiheight, bw, bh,
 304                          SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREDRAW);
 305             bpos += bw + bspace;
 306         }
 307     }
 308
 309     /*handle modal message boxes*/
 310     if (((lpmb->dwStyle & MB_TASKMODAL) && (lpmb->hwndOwner==NULL)) || (lpmb->dwStyle & MB_SYSTEMMODAL))
 311         SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 312
 313     return hFont;
 314 }
 315
 316
 317 /**************************************************************************
 318  *           MSGBOX_DlgProc
 319  *
 320  * Dialog procedure for message boxes.
 321  */
 322 static INT_PTR CALLBACK MSGBOX_DlgProc( HWND hwnd, UINT message,
 323                                         WPARAM wParam, LPARAM lParam )
 324 {
 325   HFONT hFont;
 326
 327   switch(message) {
 328    case WM_INITDIALOG:
 329    {
 330        LPMSGBOXPARAMSW mbp = (LPMSGBOXPARAMSW)lParam;
 331        SetWindowContextHelpId(hwnd, mbp->dwContextHelpId);
 332        hFont = MSGBOX_OnInit(hwnd, mbp);
 333        SetPropA(hwnd, "WINE_MSGBOX_HFONT", (HANDLE)hFont);
 334        SetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK", (HANDLE)mbp->lpfnMsgBoxCallback);
 335        break;
 336    }
 337
 338    case WM_COMMAND:
 339     switch (LOWORD(wParam))
 340     {
 341      case IDOK:
 342      case IDCANCEL:
 343      case IDABORT:
 344      case IDRETRY:
 345      case IDIGNORE:
 346      case IDYES:
 347      case IDNO:
 348      case IDTRYAGAIN:
 349      case IDCONTINUE:
 350       hFont = GetPropA(hwnd, "WINE_MSGBOX_HFONT");
 351       EndDialog(hwnd, wParam);
 352       if (hFont)
 353           DeleteObject(hFont);
 354       break;
 355      case IDHELP:
 356       FIXME("Help button not supported yet\n");
 357       break;
 358     }
 359     break;
 360
 361     case WM_HELP:
 362     {
 363         MSGBOXCALLBACK callback = (MSGBOXCALLBACK)GetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK");
 364         HELPINFO hi;
 365
 366         memcpy(&hi, (void *)lParam, sizeof(hi));
 367         hi.dwContextId = GetWindowContextHelpId(hwnd);
 368
 369         if (callback)
 370             callback(&hi);
 371         else
 372             SendMessageW(GetWindow(hwnd, GW_OWNER), WM_HELP, 0, (LPARAM)&hi);
 373         break;
 374    }
 375
 376    default:
 377      /* Ok. Ignore all the other messages */
 378      TRACE("Message number 0x%04x is being ignored.\n", message);
 379     break;
 380   }
 381   return 0;
 382 }
 383
 384
 385 /**************************************************************************
 386  *              MessageBoxA (USER32.@)
 387  */
 388 INT WINAPI MessageBoxA(HWND hWnd, LPCSTR text, LPCSTR title, UINT type)
 389 {
 390     return MessageBoxExA(hWnd, text, title, type, LANG_NEUTRAL);
 391 }
 392
 393
 394 /**************************************************************************
 395  *              MessageBoxW (USER32.@)
 396  */
 397 INT WINAPI MessageBoxW( HWND hwnd, LPCWSTR text, LPCWSTR title, UINT type )
 398 {
 399     return MessageBoxExW(hwnd, text, title, type, LANG_NEUTRAL);
 400 }
 401
 402
 403 /**************************************************************************
 404  *              MessageBoxExA (USER32.@)
 405  */
 406 INT WINAPI MessageBoxExA( HWND hWnd, LPCSTR text, LPCSTR title,
 407                               UINT type, WORD langid )
 408 {
 409     MSGBOXPARAMSA msgbox;
 410
 411     msgbox.cbSize = sizeof(msgbox);
 412     msgbox.hwndOwner = hWnd;
 413     msgbox.hInstance = 0;
 414     msgbox.lpszText = text;
 415     msgbox.lpszCaption = title;
 416     msgbox.dwStyle = type;
 417     msgbox.lpszIcon = NULL;
 418     msgbox.dwContextHelpId = 0;
 419     msgbox.lpfnMsgBoxCallback = NULL;
 420     msgbox.dwLanguageId = langid;
 421
 422     return MessageBoxIndirectA(&msgbox);
 423 }
 424
 425 /**************************************************************************
 426  *              MessageBoxExW (USER32.@)
 427  */
 428 INT WINAPI MessageBoxExW( HWND hWnd, LPCWSTR text, LPCWSTR title,
 429                               UINT type, WORD langid )
 430 {
 431     MSGBOXPARAMSW msgbox;
 432
 433     msgbox.cbSize = sizeof(msgbox);
 434     msgbox.hwndOwner = hWnd;
 435     msgbox.hInstance = 0;
 436     msgbox.lpszText = text;
 437     msgbox.lpszCaption = title;
 438     msgbox.dwStyle = type;
 439     msgbox.lpszIcon = NULL;
 440     msgbox.dwContextHelpId = 0;
 441     msgbox.lpfnMsgBoxCallback = NULL;
 442     msgbox.dwLanguageId = langid;
 443
 444     return MessageBoxIndirectW(&msgbox);
 445 }
 446
 447 /**************************************************************************
 448  *              MessageBoxIndirectA (USER32.@)
 449  */
 450 INT WINAPI MessageBoxIndirectA( LPMSGBOXPARAMSA msgbox )
 451 {
 452     MSGBOXPARAMSW msgboxW;
 453     UNICODE_STRING textW, captionW, iconW;
 454     int ret;
 455
 456     if (HIWORD(msgbox->lpszText))
 457         RtlCreateUnicodeStringFromAsciiz(&textW, msgbox->lpszText);
 458     else
 459         textW.Buffer = (LPWSTR)msgbox->lpszText;
 460     if (HIWORD(msgbox->lpszCaption))
 461         RtlCreateUnicodeStringFromAsciiz(&captionW, msgbox->lpszCaption);
 462     else
 463         captionW.Buffer = (LPWSTR)msgbox->lpszCaption;
 464
 465     if (msgbox->dwStyle & MB_USERICON)
 466     {
 467         if (HIWORD(msgbox->lpszIcon))
 468             RtlCreateUnicodeStringFromAsciiz(&iconW, msgbox->lpszIcon);
 469         else
 470             iconW.Buffer = (LPWSTR)msgbox->lpszIcon;
 471     }
 472     else
 473         iconW.Buffer = NULL;
 474
 475     msgboxW.cbSize = sizeof(msgboxW);
 476     msgboxW.hwndOwner = msgbox->hwndOwner;
 477     msgboxW.hInstance = msgbox->hInstance;
 478     msgboxW.lpszText = textW.Buffer;
 479     msgboxW.lpszCaption = captionW.Buffer;
 480     msgboxW.dwStyle = msgbox->dwStyle;
 481     msgboxW.lpszIcon = iconW.Buffer;
 482     msgboxW.dwContextHelpId = msgbox->dwContextHelpId;
 483     msgboxW.lpfnMsgBoxCallback = msgbox->lpfnMsgBoxCallback;
 484     msgboxW.dwLanguageId = msgbox->dwLanguageId;
 485
 486     ret = MessageBoxIndirectW(&msgboxW);
 487
 488     if (HIWORD(textW.Buffer)) RtlFreeUnicodeString(&textW);
 489     if (HIWORD(captionW.Buffer)) RtlFreeUnicodeString(&captionW);
 490     if (HIWORD(iconW.Buffer)) RtlFreeUnicodeString(&iconW);
 491     return ret;
 492 }
 493
 494 /**************************************************************************
 495  *              MessageBoxIndirectW (USER32.@)
 496  */
 497 INT WINAPI MessageBoxIndirectW( LPMSGBOXPARAMSW msgbox )
 498 {
 499     LPVOID tmplate;
 500     HRSRC hRes;
 501     int ret;
 502     UINT i;
 503     struct ThreadWindows threadWindows;
 504     static const WCHAR msg_box_res_nameW[] = { 'M','S','G','B','O','X',0 };
 505
 506     if (!(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG,
 507                                  msg_box_res_nameW, msgbox->dwLanguageId)))
 508         return 0;
 509     if (!(tmplate = LoadResource(user32_module, hRes)))
 510         return 0;
 511
 512     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 513     {
 514         threadWindows.numHandles = 0;
 515         threadWindows.numAllocs = 10;
 516         threadWindows.handles = HeapAlloc(GetProcessHeap(), 0, 10*sizeof(HWND));
 517         EnumThreadWindows(GetCurrentThreadId(), MSGBOX_EnumProc, (LPARAM)&threadWindows);
 518     }
 519
 520     ret=DialogBoxIndirectParamW(msgbox->hInstance, tmplate,
 521                                 msgbox->hwndOwner, MSGBOX_DlgProc, (LPARAM)msgbox);
 522
 523     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 524     {
 525         for (i = 0; i < threadWindows.numHandles; i++)
 526             EnableWindow(threadWindows.handles[i], TRUE);
 527         HeapFree(GetProcessHeap(), 0, threadWindows.handles);
 528     }
 529     return ret;
 530 }