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 "wine/winbase16.h"
  29 #include "wine/winuser16.h"
  30 #include "winternl.h"
  31 #include "dlgs.h"
  32 #include "user_private.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(dialog);
  36 WINE_DECLARE_DEBUG_CHANNEL(msgbox);
  37
  38 #define MSGBOX_IDICON 1088
  39 #define MSGBOX_IDTEXT 100
  40 #define IDS_ERROR     2
  41
  42 struct ThreadWindows
  43 {
  44     UINT numHandles;
  45     UINT numAllocs;
  46     HWND *handles;
  47 };
  48
  49 static BOOL CALLBACK MSGBOX_EnumProc(HWND hwnd, LPARAM lParam)
  50 {
  51     struct ThreadWindows *threadWindows = (struct ThreadWindows *)lParam;
  52
  53     if (!EnableWindow(hwnd, FALSE))
  54     {
  55         if(threadWindows->numHandles >= threadWindows->numAllocs)
  56         {
  57             threadWindows->handles = HeapReAlloc(GetProcessHeap(), 0, threadWindows->handles,
  58                                                  (threadWindows->numAllocs*2)*sizeof(HWND));
  59             threadWindows->numAllocs *= 2;
  60         }
  61         threadWindows->handles[threadWindows->numHandles++]=hwnd;
  62     }
  63    return TRUE;
  64 }
  65
  66 static HFONT MSGBOX_OnInit(HWND hwnd, LPMSGBOXPARAMSW lpmb)
  67 {
  68     HFONT hFont = 0, hPrevFont = 0;
  69     RECT rect;
  70     HWND hItem;
  71     HDC hdc;
  72     int i, buttons;
  73     int bspace, bw, bh, theight, tleft, wwidth, wheight, bpos;
  74     int borheight, borwidth, iheight, ileft, iwidth, twidth, tiheight;
  75     NONCLIENTMETRICSW nclm;
  76     LPCWSTR lpszText;
  77     WCHAR buf[256];
  78
  79     nclm.cbSize = sizeof(nclm);
  80     SystemParametersInfoW (SPI_GETNONCLIENTMETRICS, 0, &nclm, 0);
  81     hFont = CreateFontIndirectW (&nclm.lfMessageFont);
  82     /* set button font */
  83     for (i=1; i < 8; i++)
  84         SendDlgItemMessageW (hwnd, i, WM_SETFONT, (WPARAM)hFont, 0);
  85     /* set text font */
  86     SendDlgItemMessageW (hwnd, MSGBOX_IDTEXT, WM_SETFONT, (WPARAM)hFont, 0);
  87
  88     if (HIWORD(lpmb->lpszCaption)) {
  89        SetWindowTextW(hwnd, lpmb->lpszCaption);
  90     } else {
  91        UINT res_id = LOWORD(lpmb->lpszCaption);
  92        if (res_id)
  93        {
  94            if (LoadStringW(lpmb->hInstance, res_id, buf, 256))
  95                SetWindowTextW(hwnd, buf);
  96        }
  97        else
  98        {
  99            if (LoadStringW(user32_module, IDS_ERROR, buf, 256))
 100                SetWindowTextW(hwnd, buf);
 101        }
 102     }
 103     if (HIWORD(lpmb->lpszText)) {
 104        lpszText = lpmb->lpszText;
 105     } else {
 106        lpszText = buf;
 107        if (!LoadStringW(lpmb->hInstance, LOWORD(lpmb->lpszText), buf, 256))
 108           *buf = 0;     /* FIXME ?? */
 109     }
 110
 111     TRACE_(msgbox)("%s\n", debugstr_w(lpszText));
 112     SetWindowTextW(GetDlgItem(hwnd, MSGBOX_IDTEXT), lpszText);
 113
 114     /* Hide not selected buttons */
 115     switch(lpmb->dwStyle & MB_TYPEMASK) {
 116     case MB_OK:
 117         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 118         /* fall through */
 119     case MB_OKCANCEL:
 120         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 121         ShowWindow(GetDlgItem(hwnd, IDRETRY), SW_HIDE);
 122         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 123         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 124         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 125         break;
 126     case MB_ABORTRETRYIGNORE:
 127         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 128         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 129         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 130         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 131         break;
 132     case MB_YESNO:
 133         ShowWindow(GetDlgItem(hwnd, IDCANCEL), SW_HIDE);
 134         /* fall through */
 135     case MB_YESNOCANCEL:
 136         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 137         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 138         ShowWindow(GetDlgItem(hwnd, IDRETRY), SW_HIDE);
 139         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 140         break;
 141     case MB_RETRYCANCEL:
 142         ShowWindow(GetDlgItem(hwnd, IDOK), SW_HIDE);
 143         ShowWindow(GetDlgItem(hwnd, IDABORT), SW_HIDE);
 144         ShowWindow(GetDlgItem(hwnd, IDIGNORE), SW_HIDE);
 145         ShowWindow(GetDlgItem(hwnd, IDYES), SW_HIDE);
 146         ShowWindow(GetDlgItem(hwnd, IDNO), SW_HIDE);
 147         break;
 148     }
 149     /* Set the icon */
 150     switch(lpmb->dwStyle & MB_ICONMASK) {
 151     case MB_ICONEXCLAMATION:
 152         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 153                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_EXCLAMATION), 0);
 154         break;
 155     case MB_ICONQUESTION:
 156         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 157                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_QUESTION), 0);
 158         break;
 159     case MB_ICONASTERISK:
 160         SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 161                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_ASTERISK), 0);
 162         break;
 163     case MB_ICONHAND:
 164       SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 165                             (WPARAM)LoadIconW(0, (LPWSTR)IDI_HAND), 0);
 166       break;
 167     case MB_USERICON:
 168       SendDlgItemMessageW(hwnd, stc1, STM_SETICON,
 169                           (WPARAM)LoadIconW(lpmb->hInstance, lpmb->lpszIcon), 0);
 170       break;
 171     default:
 172         /* By default, Windows 95/98/NT do not associate an icon to message boxes.
 173          * So wine should do the same.
 174          */
 175         break;
 176     }
 177
 178     /* Position everything */
 179     GetWindowRect(hwnd, &rect);
 180     borheight = rect.bottom - rect.top;
 181     borwidth  = rect.right - rect.left;
 182     GetClientRect(hwnd, &rect);
 183     borheight -= rect.bottom - rect.top;
 184     borwidth  -= rect.right - rect.left;
 185
 186     /* Get the icon height */
 187     GetWindowRect(GetDlgItem(hwnd, MSGBOX_IDICON), &rect);
 188     MapWindowPoints(0, hwnd, (LPPOINT)&rect, 2);
 189     if (!(lpmb->dwStyle & MB_ICONMASK))
 190     {
 191         rect.bottom = rect.top;
 192         rect.right = rect.left;
 193     }
 194     iheight = rect.bottom - rect.top;
 195     ileft = rect.left;
 196     iwidth = rect.right - ileft;
 197
 198     hdc = GetDC(hwnd);
 199     if (hFont)
 200         hPrevFont = SelectObject(hdc, hFont);
 201
 202     /* Get the number of visible buttons and their size */
 203     bh = bw = 1; /* Minimum button sizes */
 204     for (buttons = 0, i = 1; i < 8; i++)
 205     {
 206         hItem = GetDlgItem(hwnd, i);
 207         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE)
 208         {
 209             WCHAR buttonText[1024];
 210             int w, h;
 211             buttons++;
 212             if (GetWindowTextW(hItem, buttonText, 1024))
 213             {
 214                 DrawTextW( hdc, buttonText, -1, &rect, DT_LEFT | DT_EXPANDTABS | DT_CALCRECT);
 215                 h = rect.bottom - rect.top;
 216                 w = rect.right - rect.left;
 217                 if (h > bh) bh = h;
 218                 if (w > bw)  bw = w ;
 219             }
 220         }
 221     }
 222     bw = max(bw, bh * 2);
 223     /* Button white space */
 224     bh = bh * 2;
 225     bw = bw * 2;
 226     bspace = bw/3; /* Space between buttons */
 227
 228     /* Get the text size */
 229     GetClientRect(GetDlgItem(hwnd, MSGBOX_IDTEXT), &rect);
 230     rect.top = rect.left = rect.bottom = 0;
 231     DrawTextW( hdc, lpszText, -1, &rect,
 232                DT_LEFT | DT_EXPANDTABS | DT_WORDBREAK | DT_CALCRECT);
 233     /* Min text width corresponds to space for the buttons */
 234     tleft = ileft;
 235     if (iwidth) tleft += ileft + iwidth;
 236     twidth = max((bw + bspace) * buttons + bspace - tleft, rect.right);
 237     theight = rect.bottom;
 238
 239     if (hFont)
 240         SelectObject(hdc, hPrevFont);
 241     ReleaseDC(hwnd, hdc);
 242
 243     tiheight = 16 + max(iheight, theight);
 244     wwidth  = tleft + twidth + ileft + borwidth;
 245     wheight = 8 + tiheight + bh + borheight;
 246
 247     /* Resize the window */
 248     SetWindowPos(hwnd, 0, 0, 0, wwidth, wheight,
 249                  SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 250
 251     /* Position the icon */
 252     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDICON), 0, ileft, (tiheight - iheight) / 2, 0, 0,
 253                  SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 254
 255     /* Position the text */
 256     SetWindowPos(GetDlgItem(hwnd, MSGBOX_IDTEXT), 0, tleft, (tiheight - theight) / 2, twidth, theight,
 257                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW);
 258
 259     /* Position the buttons */
 260     bpos = (wwidth - (bw + bspace) * buttons + bspace) / 2;
 261     for (buttons = i = 0; i < 7; i++) {
 262         /* some arithmetic to get the right order for YesNoCancel windows */
 263         hItem = GetDlgItem(hwnd, (i + 5) % 7 + 1);
 264         if (GetWindowLongW(hItem, GWL_STYLE) & WS_VISIBLE) {
 265             if (buttons++ == ((lpmb->dwStyle & MB_DEFMASK) >> 8)) {
 266                 SetFocus(hItem);
 267                 SendMessageW( hItem, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 268             }
 269             SetWindowPos(hItem, 0, bpos, tiheight, bw, bh,
 270                          SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREDRAW);
 271             bpos += bw + bspace;
 272         }
 273     }
 274
 275     /*handle modal message boxes*/
 276     if (((lpmb->dwStyle & MB_TASKMODAL) && (lpmb->hwndOwner==NULL)) || (lpmb->dwStyle & MB_SYSTEMMODAL))
 277         SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
 278
 279     return hFont;
 280 }
 281
 282
 283 /**************************************************************************
 284  *           MSGBOX_DlgProc
 285  *
 286  * Dialog procedure for message boxes.
 287  */
 288 static INT_PTR CALLBACK MSGBOX_DlgProc( HWND hwnd, UINT message,
 289                                         WPARAM wParam, LPARAM lParam )
 290 {
 291   HFONT hFont;
 292
 293   switch(message) {
 294    case WM_INITDIALOG:
 295    {
 296        LPMSGBOXPARAMSW mbp = (LPMSGBOXPARAMSW)lParam;
 297        SetWindowContextHelpId(hwnd, mbp->dwContextHelpId);
 298        hFont = MSGBOX_OnInit(hwnd, mbp);
 299        SetPropA(hwnd, "WINE_MSGBOX_HFONT", (HANDLE)hFont);
 300        SetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK", (HANDLE)mbp->lpfnMsgBoxCallback);
 301        break;
 302    }
 303
 304    case WM_COMMAND:
 305     switch (LOWORD(wParam))
 306     {
 307      case IDOK:
 308      case IDCANCEL:
 309      case IDABORT:
 310      case IDRETRY:
 311      case IDIGNORE:
 312      case IDYES:
 313      case IDNO:
 314       hFont = GetPropA(hwnd, "WINE_MSGBOX_HFONT");
 315       EndDialog(hwnd, wParam);
 316       if (hFont)
 317           DeleteObject(hFont);
 318       break;
 319     }
 320     break;
 321
 322     case WM_HELP:
 323     {
 324         MSGBOXCALLBACK callback = (MSGBOXCALLBACK)GetPropA(hwnd, "WINE_MSGBOX_HELPCALLBACK");
 325         HELPINFO hi;
 326
 327         memcpy(&hi, (void *)lParam, sizeof(hi));
 328         hi.dwContextId = GetWindowContextHelpId(hwnd);
 329
 330         if (callback)
 331             callback(&hi);
 332         else
 333             SendMessageW(GetWindow(hwnd, GW_OWNER), WM_HELP, 0, (LPARAM)&hi);
 334         break;
 335    }
 336
 337    default:
 338      /* Ok. Ignore all the other messages */
 339      TRACE("Message number 0x%04x is being ignored.\n", message);
 340     break;
 341   }
 342   return 0;
 343 }
 344
 345
 346 /**************************************************************************
 347  *              MessageBoxA (USER32.@)
 348  */
 349 INT WINAPI MessageBoxA(HWND hWnd, LPCSTR text, LPCSTR title, UINT type)
 350 {
 351     return MessageBoxExA(hWnd, text, title, type, LANG_NEUTRAL);
 352 }
 353
 354
 355 /**************************************************************************
 356  *              MessageBoxW (USER32.@)
 357  */
 358 INT WINAPI MessageBoxW( HWND hwnd, LPCWSTR text, LPCWSTR title, UINT type )
 359 {
 360     return MessageBoxExW(hwnd, text, title, type, LANG_NEUTRAL);
 361 }
 362
 363
 364 /**************************************************************************
 365  *              MessageBoxExA (USER32.@)
 366  */
 367 INT WINAPI MessageBoxExA( HWND hWnd, LPCSTR text, LPCSTR title,
 368                               UINT type, WORD langid )
 369 {
 370     MSGBOXPARAMSA msgbox;
 371
 372     msgbox.cbSize = sizeof(msgbox);
 373     msgbox.hwndOwner = hWnd;
 374     msgbox.hInstance = 0;
 375     msgbox.lpszText = text;
 376     msgbox.lpszCaption = title;
 377     msgbox.dwStyle = type;
 378     msgbox.lpszIcon = NULL;
 379     msgbox.dwContextHelpId = 0;
 380     msgbox.lpfnMsgBoxCallback = NULL;
 381     msgbox.dwLanguageId = langid;
 382
 383     return MessageBoxIndirectA(&msgbox);
 384 }
 385
 386 /**************************************************************************
 387  *              MessageBoxExW (USER32.@)
 388  */
 389 INT WINAPI MessageBoxExW( HWND hWnd, LPCWSTR text, LPCWSTR title,
 390                               UINT type, WORD langid )
 391 {
 392     MSGBOXPARAMSW msgbox;
 393
 394     msgbox.cbSize = sizeof(msgbox);
 395     msgbox.hwndOwner = hWnd;
 396     msgbox.hInstance = 0;
 397     msgbox.lpszText = text;
 398     msgbox.lpszCaption = title;
 399     msgbox.dwStyle = type;
 400     msgbox.lpszIcon = NULL;
 401     msgbox.dwContextHelpId = 0;
 402     msgbox.lpfnMsgBoxCallback = NULL;
 403     msgbox.dwLanguageId = langid;
 404
 405     return MessageBoxIndirectW(&msgbox);
 406 }
 407
 408 /**************************************************************************
 409  *              MessageBoxIndirectA (USER32.@)
 410  */
 411 INT WINAPI MessageBoxIndirectA( LPMSGBOXPARAMSA msgbox )
 412 {
 413     MSGBOXPARAMSW msgboxW;
 414     UNICODE_STRING textW, captionW, iconW;
 415     int ret;
 416
 417     if (HIWORD(msgbox->lpszText))
 418         RtlCreateUnicodeStringFromAsciiz(&textW, msgbox->lpszText);
 419     else
 420         textW.Buffer = (LPWSTR)msgbox->lpszText;
 421     if (HIWORD(msgbox->lpszCaption))
 422         RtlCreateUnicodeStringFromAsciiz(&captionW, msgbox->lpszCaption);
 423     else
 424         captionW.Buffer = (LPWSTR)msgbox->lpszCaption;
 425
 426     if (msgbox->dwStyle & MB_USERICON)
 427     {
 428         if (HIWORD(msgbox->lpszIcon))
 429             RtlCreateUnicodeStringFromAsciiz(&iconW, msgbox->lpszIcon);
 430         else
 431             iconW.Buffer = (LPWSTR)msgbox->lpszIcon;
 432     }
 433     else
 434         iconW.Buffer = NULL;
 435
 436     msgboxW.cbSize = sizeof(msgboxW);
 437     msgboxW.hwndOwner = msgbox->hwndOwner;
 438     msgboxW.hInstance = msgbox->hInstance;
 439     msgboxW.lpszText = textW.Buffer;
 440     msgboxW.lpszCaption = captionW.Buffer;
 441     msgboxW.dwStyle = msgbox->dwStyle;
 442     msgboxW.lpszIcon = iconW.Buffer;
 443     msgboxW.dwContextHelpId = msgbox->dwContextHelpId;
 444     msgboxW.lpfnMsgBoxCallback = msgbox->lpfnMsgBoxCallback;
 445     msgboxW.dwLanguageId = msgbox->dwLanguageId;
 446
 447     ret = MessageBoxIndirectW(&msgboxW);
 448
 449     if (HIWORD(textW.Buffer)) RtlFreeUnicodeString(&textW);
 450     if (HIWORD(captionW.Buffer)) RtlFreeUnicodeString(&captionW);
 451     if (HIWORD(iconW.Buffer)) RtlFreeUnicodeString(&iconW);
 452     return ret;
 453 }
 454
 455 /**************************************************************************
 456  *              MessageBoxIndirectW (USER32.@)
 457  */
 458 INT WINAPI MessageBoxIndirectW( LPMSGBOXPARAMSW msgbox )
 459 {
 460     LPVOID tmplate;
 461     HRSRC hRes;
 462     int ret;
 463     UINT i;
 464     struct ThreadWindows threadWindows;
 465     static const WCHAR msg_box_res_nameW[] = { 'M','S','G','B','O','X',0 };
 466
 467     if (!(hRes = FindResourceExW(user32_module, (LPWSTR)RT_DIALOG,
 468                                  msg_box_res_nameW, msgbox->dwLanguageId)))
 469         return 0;
 470     if (!(tmplate = (LPVOID)LoadResource(user32_module, hRes)))
 471         return 0;
 472
 473     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 474     {
 475         threadWindows.numHandles = 0;
 476         threadWindows.numAllocs = 10;
 477         threadWindows.handles = HeapAlloc(GetProcessHeap(), 0, 10*sizeof(HWND));
 478         EnumThreadWindows(GetCurrentThreadId(), MSGBOX_EnumProc, (LPARAM)&threadWindows);
 479     }
 480
 481     ret=DialogBoxIndirectParamW(msgbox->hInstance, tmplate,
 482                                 msgbox->hwndOwner, MSGBOX_DlgProc, (LPARAM)msgbox);
 483
 484     if ((msgbox->dwStyle & MB_TASKMODAL) && (msgbox->hwndOwner==NULL))
 485     {
 486         for (i = 0; i < threadWindows.numHandles; i++)
 487             EnableWindow(threadWindows.handles[i], TRUE);
 488         HeapFree(GetProcessHeap(), 0, threadWindows.handles);
 489     }
 490     return ret;
 491 }