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;
  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 and assign the WS_GROUP style to the first button */
 119     hItem = 0;
 120     switch(lpmb->dwStyle & MB_TYPEMASK) {
 121     case MB_OK:
 122         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 123         /* fall through */
 124     case MB_OKCANCEL:
 125         hItem = GetDlgItem(hwnd, IDOK);
 126         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 127         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 128         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 129         DestroyWindow(GetDlgItem(hwnd, IDYES));
 130         DestroyWindow(GetDlgItem(hwnd, IDNO));
 131         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 132         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 133         break;
 134     case MB_ABORTRETRYIGNORE:
 135         hItem = GetDlgItem(hwnd, IDABORT);
 136         DestroyWindow(GetDlgItem(hwnd, IDOK));
 137         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 138         DestroyWindow(GetDlgItem(hwnd, IDYES));
 139         DestroyWindow(GetDlgItem(hwnd, IDNO));
 140         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 141         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 142         break;
 143     case MB_YESNO:
 144         DestroyWindow(GetDlgItem(hwnd, IDCANCEL));
 145         /* fall through */
 146     case MB_YESNOCANCEL:
 147         hItem = GetDlgItem(hwnd, IDYES);
 148         DestroyWindow(GetDlgItem(hwnd, IDOK));
 149         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 150         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 151         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 152         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 153         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 154         break;
 155     case MB_RETRYCANCEL:
 156         hItem = GetDlgItem(hwnd, IDRETRY);
 157         DestroyWindow(GetDlgItem(hwnd, IDOK));
 158         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 159         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 160         DestroyWindow(GetDlgItem(hwnd, IDYES));
 161         DestroyWindow(GetDlgItem(hwnd, IDNO));
 162         DestroyWindow(GetDlgItem(hwnd, IDCONTINUE));
 163         DestroyWindow(GetDlgItem(hwnd, IDTRYAGAIN));
 164         break;
 165     case MB_CANCELTRYCONTINUE:
 166         hItem = GetDlgItem(hwnd, IDCANCEL);
 167         DestroyWindow(GetDlgItem(hwnd, IDOK));
 168         DestroyWindow(GetDlgItem(hwnd, IDABORT));
 169         DestroyWindow(GetDlgItem(hwnd, IDIGNORE));
 170         DestroyWindow(GetDlgItem(hwnd, IDYES));
 171         DestroyWindow(GetDlgItem(hwnd, IDNO));
 172         DestroyWindow(GetDlgItem(hwnd, IDRETRY));
 173     }
 174
 175     if (hItem) SetWindowLongW(hItem, GWL_STYLE, GetWindowLongW(hItem, GWL_STYLE) | WS_GROUP);
 176
 177     /* Set the icon */
 178     switch(lpmb->dwStyle & MB_ICONMASK) {
 179     case MB_ICONEXCLAMATION:
 180         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 181                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_EXCLAMATION), 0);
 182         break;
 183     case MB_ICONQUESTION:
 184         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 185                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_QUESTION), 0);
 186         break;
 187     case MB_ICONASTERISK:
 188         SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 189                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_ASTERISK), 0);
 190         break;
 191     case MB_ICONHAND:
 192       SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 193                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_HAND), 0);
 194       break;
 195     case MB_USERICON:
 196       SendDlgItemMessageW(hwnd, MSGBOX_IDICON, STM_SETICON,
 197                           (WPARAM)LoadIconW(lpmb->hInstance, lpmb->lpszIcon), 0);
 198       break;
 199     default:
 200         /* By default, Windows 95/98/NT do not associate an icon to message boxes.
 201          * So wine should do the same.
 202          */
 203         break;
 204     }
 205
 206     /* Remove Help button unless MB_HELP supplied */
 207     if (!(lpmb->dwStyle & MB_HELP)) {
 208         DestroyWindow(GetDlgItem(hwnd, IDHELP));
 209     }
 210
 211     /* Position everything */
 212     GetWindowRect(hwnd, &rect);
 213     borheight = rect.bottom - rect.top;
 214     borwidth  = rect.right - rect.left;
 215     GetClientRect(hwnd, &rect);
 216     borheight -= rect.bottom - rect.top;
 217     borwidth  -= rect.right - rect.left;
 218
 219     /* Get the icon height */
 220     GetWindowRect(GetDlgItem(hwnd, MSGBOX_IDICON), &rect);
 221     MapWindowPoints(0, hwnd, (LPPOINT)&rect, 2);
 222     if (!(lpmb->dwStyle & MB_ICONMASK))
 223     {
 224         rect.bottom = rect.top;
 225         rect.right = rect.left;
 226     }
 227     iheight = rect.bottom - rect.top;
 228     ileft = rect.left;
 229     iwidth = rect.right - ileft;
 230
 231     hdc = GetDC(hwnd);
 232     hPrevFont = SelectObject( hdc, (HFONT)SendMessageW( hwnd, WM_GETFONT, 0, 0 ));
 233
 234     /* Get the number of visible buttons and their size */
 235     bh = bw = 1; /* Minimum button sizes */
 236     for (buttons = 0, i = IDOK; i <= IDCONTINUE; i++)
 237     {
 238         if (i == IDCLOSE) continue; /* No CLOSE button */
 239         hItem = GetDlgItem(hwnd, i);
 240         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE)
 241         {
 242             WCHAR buttonText[1024];
 243             int w, h;
 244             buttons++;
 245             if (GetWindowTextW(hItem, buttonText, 1024))
 246             {
 247                 DrawTextW( hdc, buttonText, -1, &rect, DT_LEFT | DT_EXPANDTABS | DT_CALCRECT);
 248                 h = rect.bottom - rect.top;
 249                 w = rect.right - rect.left;
 250                 if (h > bh) bh = h;
 251                 if (w > bw)  bw = w ;
 252             }
 253         }
 254     }
 255     bw = max(bw, bh * 2);
 256     /* Button white space */
 257     bh = bh * 2;
 258     bw = bw * 2;
 259     bspace = bw/3; /* Space between buttons */
 260
 261     /* Get the text size */
 262     GetClientRect(GetDlgItem(hwnd, MSGBOX_IDTEXT), &rect);
 263     rect.top = rect.left = rect.bottom = 0;
 264     DrawTextW(hdc, lpszText, -1, &rect,
 265               DT_LEFT | DT_EXPANDTABS | DT_WORDBREAK | DT_CALCRECT | DT_NOPREFIX);
 266     /* Min text width corresponds to space for the buttons */
 267     tleft = ileft;
 268     if (iwidth) tleft += ileft + iwidth;
 269     twidth = max((bw + bspace) * buttons + bspace - tleft, rect.right);
 270     theight = rect.bottom;
 271
 272     SelectObject(hdc, hPrevFont);
 273     ReleaseDC(hwnd, hdc);
 274
 275     tiheight = 16 + max(iheight, theight);
 276     wwidth  = tleft + twidth + ileft + borwidth;
 277     wheight = 8 + tiheight + bh + borheight;
 278
 279     /* Message boxes are always desktop centered, so query desktop size and center window */
 280     monitor = MonitorFromWindow(lpmb->hwndOwner ? lpmb->hwndOwner : GetActiveWindow(), MONITOR_DEFAULTTOPRIMARY);
 281     mon_info.cbSize = sizeof(mon_info);
 282     GetMonitorInfoW(monitor, &mon_info);
 283     wleft = (mon_info.rcWork.left + mon_info.rcWork.right - wwidth) / 2;
 284     wtop = (mon_info.rcWork.top + mon_info.rcWork.bottom - wheight) / 2;
 285
 286     /* Resize and center the window */
 287     SetWindowPos(hwnd, 0, wleft, wtop, wwidth, wheight,
 288                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 289
 290     /* Position the icon */
 291     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDICON), 0, ileft, (tiheight - iheight) / 2, 0, 0,
 292                  SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 293
 294     /* Position the text */
 295     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDTEXT), 0, tleft, (tiheight - theight) / 2, twidth, theight,
 296                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 297
 298     /* Position the buttons */
 299     bpos = (wwidth - (bw + bspace) * buttons + bspace) / 2;
 300     for (buttons = i = 0; i < (sizeof(buttonOrder) / sizeof(buttonOrder[0])); i++) {
 301
 302         /* Convert the button order to ID* value to order for the buttons */
 303         hItem = GetDlgItem(hwnd, buttonOrder[i]);
 304         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE) {
 305             if (buttons++ == ((lpmb->dwStyle & MB_DEFMASK) >> 8)) {
 306                 SetFocus(hItem);
 307                 SendMessageW( hItem, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 308             }
 309             SetWindowPos(hItem, 0, bpos, tiheight, bw, bh,
 310                          SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREDRAW);
 311             bpos += bw + bspace;
 312         }
 313     }
 314
 315     /*handle modal message boxes*/
 316     if (((lpmb->dwStyle & MB_TASKMODAL) && (lpmb->hwndOwner==NULL)) || (lpmb->dwStyle & MB_SYSTEMMODAL))
 317         SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 318
 319     HeapFree( GetProcessHeap(), 0, buffer );
 320 }
 321
 322
 323 /**************************************************************************
 324  *           MSGBOX_DlgProc
 325  *
 326  * Dialog procedure for message boxes.
 327  */
 328 static INT_PTR CALLBACK MSGBOX_DlgProc( HWND hwnd, UINT message,
 329                                         WPARAM wParam, LPARAM lParam )
 330 {
 331   switch(message) {
 332    case WM_INITDIALOG:
 333    {
 334        LPMSGBOXPARAMSW mbp = (LPMSGBOXPARAMSW)lParam;
 335        SetWindowContextHelpId(hwnd, mbp->dwContextHelpId);
 336        MSGBOX_OnInit(hwnd, mbp);
 337        SetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK", mbp->lpfnMsgBoxCallback);
 338        break;
 339    }
 340
 341    case WM_COMMAND:
 342     switch (LOWORD(wParam))
 343     {
 344      case IDOK:
 345      case IDCANCEL:
 346      case IDABORT:
 347      case IDRETRY:
 348      case IDIGNORE:
 349      case IDYES:
 350      case IDNO:
 351      case IDTRYAGAIN:
 352      case IDCONTINUE:
 353       EndDialog(hwnd, wParam);
 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  *      MessageBoxTimeoutA (USER32.@)
 449  */
 450 INT WINAPI MessageBoxTimeoutA( HWND hWnd, LPCSTR text, LPCSTR title,
 451                                UINT type, WORD langid, DWORD timeout )
 452 {
 453     FIXME("timeout not supported (%u)\n", timeout);
 454     return MessageBoxExA( hWnd, text, title, type, langid );
 455 }
 456
 457 /**************************************************************************
 458  *      MessageBoxTimeoutW (USER32.@)
 459  */
 460 INT WINAPI MessageBoxTimeoutW( HWND hWnd, LPCWSTR text, LPCWSTR title,
 461                                UINT type, WORD langid, DWORD timeout )
 462 {
 463     FIXME("timeout not supported (%u)\n", timeout);
 464     return MessageBoxExW( hWnd, text, title, type, langid );
 465 }
 466
 467 /**************************************************************************
 468  *              MessageBoxIndirectA (USER32.@)
 469  */
 470 INT WINAPI MessageBoxIndirectA( LPMSGBOXPARAMSA msgbox )
 471 {
 472     MSGBOXPARAMSW msgboxW;
 473     UNICODE_STRING textW, captionW, iconW;
 474     int ret;
 475
 476     if (IS_INTRESOURCE(msgbox->lpszText))
 477         textW.Buffer = (LPWSTR)msgbox->lpszText;
 478     else
 479         RtlCreateUnicodeStringFromAsciiz(&textW, msgbox->lpszText);
 480     if (IS_INTRESOURCE(msgbox->lpszCaption))
 481         captionW.Buffer = (LPWSTR)msgbox->lpszCaption;
 482     else
 483         RtlCreateUnicodeStringFromAsciiz(&captionW, msgbox->lpszCaption);
 484
 485     if (msgbox->dwStyle & MB_USERICON)
 486     {
 487         if (IS_INTRESOURCE(msgbox->lpszIcon))
 488             iconW.Buffer = (LPWSTR)msgbox->lpszIcon;
 489         else
 490             RtlCreateUnicodeStringFromAsciiz(&iconW, msgbox->lpszIcon);
 491     }
 492     else
 493         iconW.Buffer = NULL;
 494
 495     msgboxW.cbSize = sizeof(msgboxW);
 496     msgboxW.hwndOwner = msgbox->hwndOwner;
 497     msgboxW.hInstance = msgbox->hInstance;
 498     msgboxW.lpszText = textW.Buffer;
 499     msgboxW.lpszCaption = captionW.Buffer;
 500     msgboxW.dwStyle = msgbox->dwStyle;
 501     msgboxW.lpszIcon = iconW.Buffer;
 502     msgboxW.dwContextHelpId = msgbox->dwContextHelpId;
 503     msgboxW.lpfnMsgBoxCallback = msgbox->lpfnMsgBoxCallback;
 504     msgboxW.dwLanguageId = msgbox->dwLanguageId;
 505
 506     ret = MessageBoxIndirectW(&msgboxW);
 507
 508     if (!IS_INTRESOURCE(textW.Buffer)) RtlFreeUnicodeString(&textW);
 509     if (!IS_INTRESOURCE(captionW.Buffer)) RtlFreeUnicodeString(&captionW);
 510     if (!IS_INTRESOURCE(iconW.Buffer)) RtlFreeUnicodeString(&iconW);
 511     return ret;
 512 }
 513
 514 /**************************************************************************
 515  *              MessageBoxIndirectW (USER32.@)
 516  */
 517 INT WINAPI MessageBoxIndirectW( LPMSGBOXPARAMSW msgbox )
 518 {
 519     LPVOID tmplate;
 520     HRSRC hRes;
 521     int ret;
 522     UINT i;
 523     struct ThreadWindows threadWindows;
 524     static const WCHAR msg_box_res_nameW[] = { 'M','S','G','B','O','X',0 };
 525
 526     if (!(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG,
 527                                  msg_box_res_nameW, msgbox->dwLanguageId)))
 528     {
 529         if (!msgbox->dwLanguageId ||
 530             !(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG, msg_box_res_nameW, LANG_NEUTRAL)))
 531             return 0;
 532     }
 533     if (!(tmplate = LoadResource(user32_module, hRes)))
 534         return 0;
 535
 536     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 537     {
 538         threadWindows.numHandles = 0;
 539         threadWindows.numAllocs = 10;
 540         threadWindows.handles = HeapAlloc(GetProcessHeap(), 0, 10*sizeof(HWND));
 541         EnumThreadWindows(GetCurrentThreadId(), MSGBOX_EnumProc, (LPARAM)&threadWindows);
 542     }
 543
 544     ret=DialogBoxIndirectParamW(msgbox->hInstance, tmplate,
 545                                 msgbox->hwndOwner, MSGBOX_DlgProc, (LPARAM)msgbox);
 546
 547     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 548     {
 549         for (i = 0; i < threadWindows.numHandles; i++)
 550             EnableWindow(threadWindows.handles[i], TRUE);
 551         HeapFree(GetProcessHeap(), 0, threadWindows.handles);
 552     }
 553     return ret;
 554 }