| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/msw/msgdlg.cpp |
| 3 | // Purpose: wxMessageDialog |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #ifdef __BORLANDC__ |
| 16 | #pragma hdrstop |
| 17 | #endif |
| 18 | |
| 19 | #if wxUSE_MSGDLG |
| 20 | |
| 21 | #include "wx/msgdlg.h" |
| 22 | |
| 23 | // there is no hook support under CE so we can't use the code for message box |
| 24 | // positioning there |
| 25 | #ifndef __WXWINCE__ |
| 26 | #define wxUSE_MSGBOX_HOOK 1 |
| 27 | #else |
| 28 | #define wxUSE_MSGBOX_HOOK 0 |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/app.h" |
| 33 | #include "wx/intl.h" |
| 34 | #include "wx/utils.h" |
| 35 | #include "wx/dialog.h" |
| 36 | #if wxUSE_MSGBOX_HOOK |
| 37 | #include "wx/hashmap.h" |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | #include "wx/msw/private.h" |
| 42 | #include "wx/msw/private/button.h" |
| 43 | #include "wx/msw/private/metrics.h" |
| 44 | |
| 45 | #if wxUSE_MSGBOX_HOOK |
| 46 | #include "wx/fontutil.h" |
| 47 | #include "wx/textbuf.h" |
| 48 | #include "wx/display.h" |
| 49 | #endif |
| 50 | |
| 51 | // For MB_TASKMODAL |
| 52 | #ifdef __WXWINCE__ |
| 53 | #include "wx/msw/wince/missing.h" |
| 54 | #endif |
| 55 | |
| 56 | IMPLEMENT_CLASS(wxMessageDialog, wxDialog) |
| 57 | |
| 58 | #if wxUSE_MSGBOX_HOOK |
| 59 | |
| 60 | // there can potentially be one message box per thread so we use a hash map |
| 61 | // with thread ids as keys and (currently shown) message boxes as values |
| 62 | // |
| 63 | // TODO: replace this with wxTLS once it's available |
| 64 | WX_DECLARE_HASH_MAP(unsigned long, wxMessageDialog *, |
| 65 | wxIntegerHash, wxIntegerEqual, |
| 66 | wxMessageDialogMap); |
| 67 | |
| 68 | // the order in this array is the one in which buttons appear in the |
| 69 | // message box |
| 70 | const wxMessageDialog::ButtonAccessors wxMessageDialog::ms_buttons[] = |
| 71 | { |
| 72 | { IDYES, &wxMessageDialog::GetYesLabel }, |
| 73 | { IDNO, &wxMessageDialog::GetNoLabel }, |
| 74 | { IDOK, &wxMessageDialog::GetOKLabel }, |
| 75 | { IDCANCEL, &wxMessageDialog::GetCancelLabel }, |
| 76 | }; |
| 77 | |
| 78 | namespace |
| 79 | { |
| 80 | |
| 81 | wxMessageDialogMap& HookMap() |
| 82 | { |
| 83 | static wxMessageDialogMap s_Map; |
| 84 | |
| 85 | return s_Map; |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | All this code is used for adjusting the message box layout when we mess |
| 90 | with its contents. It's rather complicated because we try hard to avoid |
| 91 | assuming much about the standard layout details and so, instead of just |
| 92 | laying out everything ourselves (which would have been so much simpler!) |
| 93 | we try to only modify the existing controls positions by offsetting them |
| 94 | from their default ones in the hope that this will continue to work with |
| 95 | the future Windows versions. |
| 96 | */ |
| 97 | |
| 98 | // convert the given RECT from screen to client coordinates in place |
| 99 | void ScreenRectToClient(HWND hwnd, RECT& rc) |
| 100 | { |
| 101 | // map from desktop (i.e. screen) coordinates to ones of this window |
| 102 | // |
| 103 | // notice that a RECT is laid out as 2 consecutive POINTs so the cast is |
| 104 | // valid |
| 105 | ::MapWindowPoints(HWND_DESKTOP, hwnd, reinterpret_cast<POINT *>(&rc), 2); |
| 106 | } |
| 107 | |
| 108 | // set window position to the given rect |
| 109 | inline void SetWindowRect(HWND hwnd, const RECT& rc) |
| 110 | { |
| 111 | ::MoveWindow(hwnd, |
| 112 | rc.left, rc.top, |
| 113 | rc.right - rc.left, rc.bottom - rc.top, |
| 114 | FALSE); |
| 115 | } |
| 116 | |
| 117 | // set window position expressed in screen coordinates, whether the window is |
| 118 | // child or top level |
| 119 | void MoveWindowToScreenRect(HWND hwnd, RECT rc) |
| 120 | { |
| 121 | ScreenRectToClient(::GetParent(hwnd), rc); |
| 122 | |
| 123 | SetWindowRect(hwnd, rc); |
| 124 | } |
| 125 | |
| 126 | // helper of AdjustButtonLabels(): move the given window by dx |
| 127 | // |
| 128 | // works for both child and top level windows |
| 129 | void OffsetWindow(HWND hwnd, int dx) |
| 130 | { |
| 131 | RECT rc = wxGetWindowRect(hwnd); |
| 132 | |
| 133 | rc.left += dx; |
| 134 | rc.right += dx; |
| 135 | |
| 136 | MoveWindowToScreenRect(hwnd, rc); |
| 137 | } |
| 138 | |
| 139 | } // anonymous namespace |
| 140 | |
| 141 | /* static */ |
| 142 | WXLRESULT wxCALLBACK |
| 143 | wxMessageDialog::HookFunction(int code, WXWPARAM wParam, WXLPARAM lParam) |
| 144 | { |
| 145 | // Find the thread-local instance of wxMessageDialog |
| 146 | const DWORD tid = ::GetCurrentThreadId(); |
| 147 | wxMessageDialogMap::iterator node = HookMap().find(tid); |
| 148 | wxCHECK_MSG( node != HookMap().end(), false, |
| 149 | wxT("bogus thread id in wxMessageDialog::Hook") ); |
| 150 | |
| 151 | wxMessageDialog * const wnd = node->second; |
| 152 | |
| 153 | const HHOOK hhook = (HHOOK)wnd->m_hook; |
| 154 | const LRESULT rc = ::CallNextHookEx(hhook, code, wParam, lParam); |
| 155 | |
| 156 | if ( code == HCBT_ACTIVATE ) |
| 157 | { |
| 158 | // we won't need this hook any longer |
| 159 | ::UnhookWindowsHookEx(hhook); |
| 160 | wnd->m_hook = NULL; |
| 161 | HookMap().erase(tid); |
| 162 | |
| 163 | wnd->SetHWND((HWND)wParam); |
| 164 | |
| 165 | // replace the static text with an edit control if the message box is |
| 166 | // too big to fit the display |
| 167 | wnd->ReplaceStaticWithEdit(); |
| 168 | |
| 169 | // update the labels if necessary: we need to do it before centering |
| 170 | // the dialog as this can change its size |
| 171 | if ( wnd->HasCustomLabels() ) |
| 172 | wnd->AdjustButtonLabels(); |
| 173 | |
| 174 | // centre the message box on its parent if requested |
| 175 | if ( wnd->GetMessageDialogStyle() & wxCENTER ) |
| 176 | wnd->Center(); // center on parent |
| 177 | //else: default behaviour, center on screen |
| 178 | |
| 179 | // there seems to be no reason to leave it set |
| 180 | wnd->SetHWND(NULL); |
| 181 | } |
| 182 | |
| 183 | return rc; |
| 184 | } |
| 185 | |
| 186 | void wxMessageDialog::ReplaceStaticWithEdit() |
| 187 | { |
| 188 | // check if the message box fits the display |
| 189 | int nDisplay = wxDisplay::GetFromWindow(this); |
| 190 | if ( nDisplay == wxNOT_FOUND ) |
| 191 | nDisplay = 0; |
| 192 | const wxRect rectDisplay = wxDisplay(nDisplay).GetClientArea(); |
| 193 | |
| 194 | if ( rectDisplay.Contains(GetRect()) ) |
| 195 | { |
| 196 | // nothing to do |
| 197 | return; |
| 198 | } |
| 199 | |
| 200 | |
| 201 | // find the static control to replace: normally there are two of them, the |
| 202 | // icon and the text itself so search for all of them and ignore the icon |
| 203 | // ones |
| 204 | HWND hwndStatic = ::FindWindowEx(GetHwnd(), NULL, wxT("STATIC"), NULL); |
| 205 | if ( ::GetWindowLong(hwndStatic, GWL_STYLE) & SS_ICON ) |
| 206 | hwndStatic = ::FindWindowEx(GetHwnd(), hwndStatic, wxT("STATIC"), NULL); |
| 207 | |
| 208 | if ( !hwndStatic ) |
| 209 | { |
| 210 | wxLogDebug("Failed to find the static text control in message box."); |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | // set the right font for GetCharHeight() call below |
| 215 | wxWindowBase::SetFont(GetMessageFont()); |
| 216 | |
| 217 | // put the new edit control at the same place |
| 218 | RECT rc = wxGetWindowRect(hwndStatic); |
| 219 | ScreenRectToClient(GetHwnd(), rc); |
| 220 | |
| 221 | // but make it less tall so that the message box fits on the screen: we try |
| 222 | // to make the message box take no more than 7/8 of the screen to leave |
| 223 | // some space above and below it |
| 224 | const int hText = (7*rectDisplay.height)/8 - |
| 225 | ( |
| 226 | 2*::GetSystemMetrics(SM_CYFIXEDFRAME) + |
| 227 | ::GetSystemMetrics(SM_CYCAPTION) + |
| 228 | 5*GetCharHeight() // buttons + margins |
| 229 | ); |
| 230 | const int dh = (rc.bottom - rc.top) - hText; // vertical space we save |
| 231 | rc.bottom -= dh; |
| 232 | |
| 233 | // and it also must be wider as it needs a vertical scrollbar (in order |
| 234 | // to preserve the word wrap, otherwise the number of lines would change |
| 235 | // and we want the control to look as similar as possible to the original) |
| 236 | // |
| 237 | // NB: you would have thought that 2*SM_CXEDGE would be enough but it |
| 238 | // isn't, somehow, and the text control breaks lines differently from |
| 239 | // the static one so fudge by adding some extra space |
| 240 | const int dw = ::GetSystemMetrics(SM_CXVSCROLL) + |
| 241 | 4*::GetSystemMetrics(SM_CXEDGE); |
| 242 | rc.right += dw; |
| 243 | |
| 244 | |
| 245 | // chop of the trailing new line(s) from the message box text, they are |
| 246 | // ignored by the static control but result in extra lines and hence extra |
| 247 | // scrollbar position in the edit one |
| 248 | wxString text(wxGetWindowText(hwndStatic)); |
| 249 | for ( wxString::iterator i = text.end() - 1; i != text.begin(); --i ) |
| 250 | { |
| 251 | if ( *i != '\n' ) |
| 252 | { |
| 253 | text.erase(i + 1, text.end()); |
| 254 | break; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | // do create the new control |
| 259 | HWND hwndEdit = ::CreateWindow |
| 260 | ( |
| 261 | wxT("EDIT"), |
| 262 | wxTextBuffer::Translate(text).wx_str(), |
| 263 | WS_CHILD | WS_VSCROLL | WS_VISIBLE | |
| 264 | ES_MULTILINE | ES_READONLY | ES_AUTOVSCROLL, |
| 265 | rc.left, rc.top, |
| 266 | rc.right - rc.left, rc.bottom - rc.top, |
| 267 | GetHwnd(), |
| 268 | NULL, |
| 269 | wxhInstance, |
| 270 | NULL |
| 271 | ); |
| 272 | |
| 273 | if ( !hwndEdit ) |
| 274 | { |
| 275 | wxLogDebug("Creation of replacement edit control failed in message box"); |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | // copy the font from the original control |
| 280 | LRESULT hfont = ::SendMessage(hwndStatic, WM_GETFONT, 0, 0); |
| 281 | ::SendMessage(hwndEdit, WM_SETFONT, hfont, 0); |
| 282 | |
| 283 | // and get rid of it |
| 284 | ::DestroyWindow(hwndStatic); |
| 285 | |
| 286 | |
| 287 | // shrink and centre the message box vertically and widen it box to account |
| 288 | // for the extra scrollbar |
| 289 | RECT rcBox = wxGetWindowRect(GetHwnd()); |
| 290 | const int hMsgBox = rcBox.bottom - rcBox.top - dh; |
| 291 | rcBox.top = (rectDisplay.height - hMsgBox)/2; |
| 292 | rcBox.bottom = rcBox.top + hMsgBox + (rectDisplay.height - hMsgBox)%2; |
| 293 | rcBox.left -= dw/2; |
| 294 | rcBox.right += dw - dw/2; |
| 295 | SetWindowRect(GetHwnd(), rcBox); |
| 296 | |
| 297 | // and adjust all the buttons positions |
| 298 | for ( unsigned n = 0; n < WXSIZEOF(ms_buttons); n++ ) |
| 299 | { |
| 300 | const HWND hwndBtn = ::GetDlgItem(GetHwnd(), ms_buttons[n].id); |
| 301 | if ( !hwndBtn ) |
| 302 | continue; // it's ok, not all buttons are always present |
| 303 | |
| 304 | RECT rc = wxGetWindowRect(hwndBtn); |
| 305 | rc.top -= dh; |
| 306 | rc.bottom -= dh; |
| 307 | rc.left += dw/2; |
| 308 | rc.right += dw/2; |
| 309 | MoveWindowToScreenRect(hwndBtn, rc); |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | void wxMessageDialog::AdjustButtonLabels() |
| 314 | { |
| 315 | // changing the button labels is the easy part but we also need to ensure |
| 316 | // that the buttons are big enough for the label strings and increase their |
| 317 | // size (and maybe the size of the message box itself) if they are not |
| 318 | |
| 319 | // TODO-RTL: check whether this works correctly in RTL |
| 320 | |
| 321 | // we want to use this font in GetTextExtent() calls below but we don't |
| 322 | // want to send WM_SETFONT to the message box, who knows how is it going to |
| 323 | // react to it (right now it doesn't seem to do anything but what if this |
| 324 | // changes) |
| 325 | wxWindowBase::SetFont(GetMessageFont()); |
| 326 | |
| 327 | // first iteration: find the widest button and update the buttons labels |
| 328 | int wBtnOld = 0, // current buttons width |
| 329 | wBtnNew = 0; // required new buttons width |
| 330 | RECT rcBtn; // stores the button height and y positions |
| 331 | unsigned numButtons = 0; // total number of buttons in the message box |
| 332 | unsigned n; |
| 333 | for ( n = 0; n < WXSIZEOF(ms_buttons); n++ ) |
| 334 | { |
| 335 | const HWND hwndBtn = ::GetDlgItem(GetHwnd(), ms_buttons[n].id); |
| 336 | if ( !hwndBtn ) |
| 337 | continue; // it's ok, not all buttons are always present |
| 338 | |
| 339 | numButtons++; |
| 340 | |
| 341 | const wxString label = (this->*ms_buttons[n].getter)(); |
| 342 | const wxSize sizeLabel = wxWindowBase::GetTextExtent(label); |
| 343 | |
| 344 | // check if the button is big enough for this label |
| 345 | const RECT rc = wxGetWindowRect(hwndBtn); |
| 346 | if ( !wBtnOld ) |
| 347 | { |
| 348 | // initialize wBtnOld using the first button width, all the other |
| 349 | // ones should have the same one |
| 350 | wBtnOld = rc.right - rc.left; |
| 351 | |
| 352 | rcBtn = rc; // remember for use below when we reposition the buttons |
| 353 | } |
| 354 | else |
| 355 | { |
| 356 | wxASSERT_MSG( wBtnOld == rc.right - rc.left, |
| 357 | "all buttons are supposed to be of same width" ); |
| 358 | } |
| 359 | |
| 360 | const int widthNeeded = wxMSWButton::GetFittingSize(this, sizeLabel).x; |
| 361 | if ( widthNeeded > wBtnNew ) |
| 362 | wBtnNew = widthNeeded; |
| 363 | |
| 364 | ::SetWindowText(hwndBtn, label.wx_str()); |
| 365 | } |
| 366 | |
| 367 | if ( wBtnNew <= wBtnOld ) |
| 368 | { |
| 369 | // all buttons fit, nothing else to do |
| 370 | return; |
| 371 | } |
| 372 | |
| 373 | // resize the message box to be wider if needed |
| 374 | const int wBoxOld = wxGetClientRect(GetHwnd()).right; |
| 375 | |
| 376 | const int CHAR_WIDTH = GetCharWidth(); |
| 377 | const int MARGIN_OUTER = 2*CHAR_WIDTH; // margin between box and buttons |
| 378 | const int MARGIN_INNER = CHAR_WIDTH; // margin between buttons |
| 379 | |
| 380 | RECT rcBox = wxGetWindowRect(GetHwnd()); |
| 381 | |
| 382 | const int wAllButtons = numButtons*(wBtnNew + MARGIN_INNER) - MARGIN_INNER; |
| 383 | int wBoxNew = 2*MARGIN_OUTER + wAllButtons; |
| 384 | if ( wBoxNew > wBoxOld ) |
| 385 | { |
| 386 | const int dw = wBoxNew - wBoxOld; |
| 387 | rcBox.left -= dw/2; |
| 388 | rcBox.right += dw - dw/2; |
| 389 | |
| 390 | SetWindowRect(GetHwnd(), rcBox); |
| 391 | |
| 392 | // surprisingly, we don't need to resize the static text control, it |
| 393 | // seems to adjust itself to the new size, at least under Windows 2003 |
| 394 | // (TODO: test if this happens on older Windows versions) |
| 395 | } |
| 396 | else // the current width is big enough |
| 397 | { |
| 398 | wBoxNew = wBoxOld; |
| 399 | } |
| 400 | |
| 401 | |
| 402 | // finally position all buttons |
| 403 | |
| 404 | // notice that we have to take into account the difference between window |
| 405 | // and client width |
| 406 | rcBtn.left = (rcBox.left + rcBox.right - wxGetClientRect(GetHwnd()).right + |
| 407 | wBoxNew - wAllButtons) / 2; |
| 408 | rcBtn.right = rcBtn.left + wBtnNew; |
| 409 | |
| 410 | for ( n = 0; n < WXSIZEOF(ms_buttons); n++ ) |
| 411 | { |
| 412 | const HWND hwndBtn = ::GetDlgItem(GetHwnd(), ms_buttons[n].id); |
| 413 | if ( !hwndBtn ) |
| 414 | continue; |
| 415 | |
| 416 | MoveWindowToScreenRect(hwndBtn, rcBtn); |
| 417 | |
| 418 | rcBtn.left += wBtnNew + MARGIN_INNER; |
| 419 | rcBtn.right += wBtnNew + MARGIN_INNER; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | #endif // wxUSE_MSGBOX_HOOK |
| 424 | |
| 425 | /* static */ |
| 426 | wxFont wxMessageDialog::GetMessageFont() |
| 427 | { |
| 428 | const NONCLIENTMETRICS& ncm = wxMSWImpl::GetNonClientMetrics(); |
| 429 | return wxNativeFontInfo(ncm.lfMessageFont); |
| 430 | } |
| 431 | |
| 432 | int wxMessageDialog::ShowModal() |
| 433 | { |
| 434 | if ( !wxTheApp->GetTopWindow() ) |
| 435 | { |
| 436 | // when the message box is shown from wxApp::OnInit() (i.e. before the |
| 437 | // message loop is entered), this must be done or the next message box |
| 438 | // will never be shown - just try putting 2 calls to wxMessageBox() in |
| 439 | // OnInit() to see it |
| 440 | while ( wxTheApp->Pending() ) |
| 441 | wxTheApp->Dispatch(); |
| 442 | } |
| 443 | |
| 444 | // use the top level window as parent if none specified |
| 445 | if ( !m_parent ) |
| 446 | m_parent = GetParentForModalDialog(); |
| 447 | HWND hWnd = m_parent ? GetHwndOf(m_parent) : NULL; |
| 448 | |
| 449 | #if wxUSE_INTL |
| 450 | // native message box always uses the current user locale but the program |
| 451 | // may be using a different one and in this case we need to manually |
| 452 | // translate the button labels to avoid mismatch between the language of |
| 453 | // the message box text and its buttons |
| 454 | wxLocale * const loc = wxGetLocale(); |
| 455 | if ( loc && loc->GetLanguage() != wxLocale::GetSystemLanguage() ) |
| 456 | { |
| 457 | if ( m_dialogStyle & wxYES_NO ) |
| 458 | { |
| 459 | // use the strings with mnemonics here as the native message box |
| 460 | // does |
| 461 | SetYesNoLabels(_("&Yes"), _("&No")); |
| 462 | } |
| 463 | |
| 464 | // we may or not have the Ok/Cancel buttons but either we do have them |
| 465 | // or we already made the labels custom because we called |
| 466 | // SetYesNoLabels() above so doing this does no harm -- and is |
| 467 | // necessary in wxYES_NO | wxCANCEL case |
| 468 | // |
| 469 | // note that we don't use mnemonics here for consistency with the |
| 470 | // native message box (which probably doesn't use them because |
| 471 | // Enter/Esc keys can be already used to dismiss the message box |
| 472 | // using keyboard) |
| 473 | SetOKCancelLabels(_("OK"), _("Cancel")); |
| 474 | } |
| 475 | #endif // wxUSE_INTL |
| 476 | |
| 477 | // translate wx style in MSW |
| 478 | unsigned int msStyle; |
| 479 | const long wxStyle = GetMessageDialogStyle(); |
| 480 | if ( wxStyle & wxYES_NO ) |
| 481 | { |
| 482 | #if !(defined(__SMARTPHONE__) && defined(__WXWINCE__)) |
| 483 | if (wxStyle & wxCANCEL) |
| 484 | msStyle = MB_YESNOCANCEL; |
| 485 | else |
| 486 | #endif // !(__SMARTPHONE__ && __WXWINCE__) |
| 487 | msStyle = MB_YESNO; |
| 488 | |
| 489 | if ( wxStyle & wxNO_DEFAULT ) |
| 490 | msStyle |= MB_DEFBUTTON2; |
| 491 | else if ( wxStyle & wxCANCEL_DEFAULT ) |
| 492 | msStyle |= MB_DEFBUTTON3; |
| 493 | } |
| 494 | else // without Yes/No we're going to have an OK button |
| 495 | { |
| 496 | if ( wxStyle & wxCANCEL ) |
| 497 | { |
| 498 | msStyle = MB_OKCANCEL; |
| 499 | |
| 500 | if ( wxStyle & wxCANCEL_DEFAULT ) |
| 501 | msStyle |= MB_DEFBUTTON2; |
| 502 | } |
| 503 | else // just "OK" |
| 504 | { |
| 505 | msStyle = MB_OK; |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | if (wxStyle & wxICON_EXCLAMATION) |
| 510 | msStyle |= MB_ICONEXCLAMATION; |
| 511 | else if (wxStyle & wxICON_HAND) |
| 512 | msStyle |= MB_ICONHAND; |
| 513 | else if (wxStyle & wxICON_INFORMATION) |
| 514 | msStyle |= MB_ICONINFORMATION; |
| 515 | else if (wxStyle & wxICON_QUESTION) |
| 516 | msStyle |= MB_ICONQUESTION; |
| 517 | |
| 518 | if ( wxStyle & wxSTAY_ON_TOP ) |
| 519 | msStyle |= MB_TOPMOST; |
| 520 | |
| 521 | #ifndef __WXWINCE__ |
| 522 | if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft ) |
| 523 | msStyle |= MB_RTLREADING | MB_RIGHT; |
| 524 | #endif |
| 525 | |
| 526 | if (hWnd) |
| 527 | msStyle |= MB_APPLMODAL; |
| 528 | else |
| 529 | msStyle |= MB_TASKMODAL; |
| 530 | |
| 531 | // per MSDN documentation for MessageBox() we can prefix the message with 2 |
| 532 | // right-to-left mark characters to tell the function to use RTL layout |
| 533 | // (unfortunately this only works in Unicode builds) |
| 534 | wxString message = GetFullMessage(); |
| 535 | #if wxUSE_UNICODE |
| 536 | if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft ) |
| 537 | { |
| 538 | // NB: not all compilers support \u escapes |
| 539 | static const wchar_t wchRLM = 0x200f; |
| 540 | message.Prepend(wxString(wchRLM, 2)); |
| 541 | } |
| 542 | #endif // wxUSE_UNICODE |
| 543 | |
| 544 | #if wxUSE_MSGBOX_HOOK |
| 545 | // install the hook in any case as we don't know in advance if the message |
| 546 | // box is not going to be too big (requiring the replacement of the static |
| 547 | // control with an edit one) |
| 548 | const DWORD tid = ::GetCurrentThreadId(); |
| 549 | m_hook = ::SetWindowsHookEx(WH_CBT, |
| 550 | &wxMessageDialog::HookFunction, NULL, tid); |
| 551 | HookMap()[tid] = this; |
| 552 | #endif // wxUSE_MSGBOX_HOOK |
| 553 | |
| 554 | // do show the dialog |
| 555 | int msAns = MessageBox(hWnd, message.wx_str(), m_caption.wx_str(), msStyle); |
| 556 | int ans; |
| 557 | switch (msAns) |
| 558 | { |
| 559 | default: |
| 560 | wxFAIL_MSG(wxT("unexpected ::MessageBox() return code")); |
| 561 | // fall through |
| 562 | |
| 563 | case IDCANCEL: |
| 564 | ans = wxID_CANCEL; |
| 565 | break; |
| 566 | case IDOK: |
| 567 | ans = wxID_OK; |
| 568 | break; |
| 569 | case IDYES: |
| 570 | ans = wxID_YES; |
| 571 | break; |
| 572 | case IDNO: |
| 573 | ans = wxID_NO; |
| 574 | break; |
| 575 | } |
| 576 | return ans; |
| 577 | } |
| 578 | |
| 579 | #endif // wxUSE_MSGDLG |