src/msw/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        menu.cpp
   3 // Purpose:     wxMenu, wxMenuBar, wxMenuItem
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "menu.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_MENUS
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/frame.h"
  35     #include "wx/menu.h"
  36     #include "wx/utils.h"
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39 #endif
  40
  41 #if wxUSE_OWNER_DRAWN
  42     #include "wx/ownerdrw.h"
  43 #endif
  44
  45 #include "wx/msw/private.h"
  46
  47 // other standard headers
  48 #include <string.h>
  49
  50 // ----------------------------------------------------------------------------
  51 // global variables
  52 // ----------------------------------------------------------------------------
  53
  54 extern wxMenu *wxCurrentPopupMenu;
  55
  56 // ----------------------------------------------------------------------------
  57 // constants
  58 // ----------------------------------------------------------------------------
  59
  60 // the (popup) menu title has this special id
  61 static const int idMenuTitle = -2;
  62
  63 // ----------------------------------------------------------------------------
  64 // macros
  65 // ----------------------------------------------------------------------------
  66
  67 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  68 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
  69
  70 // ============================================================================
  71 // implementation
  72 // ============================================================================
  73
  74 // ---------------------------------------------------------------------------
  75 // wxMenu construction, adding and removing menu items
  76 // ---------------------------------------------------------------------------
  77
  78 // Construct a menu with optional title (then use append)
  79 void wxMenu::Init()
  80 {
  81     m_doBreak = FALSE;
  82
  83     // create the menu
  84     m_hMenu = (WXHMENU)CreatePopupMenu();
  85     if ( !m_hMenu )
  86     {
  87         wxLogLastError(wxT("CreatePopupMenu"));
  88     }
  89
  90     // if we have a title, insert it in the beginning of the menu
  91     if ( !!m_title )
  92     {
  93         Append(idMenuTitle, m_title);
  94         AppendSeparator();
  95     }
  96 }
  97
  98 // The wxWindow destructor will take care of deleting the submenus.
  99 wxMenu::~wxMenu()
 100 {
 101     // we should free Windows resources only if Windows doesn't do it for us
 102     // which happens if we're attached to a menubar or a submenu of another
 103     // menu
 104     if ( !IsAttached() && !GetParent() )
 105     {
 106         if ( !::DestroyMenu(GetHmenu()) )
 107         {
 108             wxLogLastError(wxT("DestroyMenu"));
 109         }
 110     }
 111
 112 #if wxUSE_ACCEL
 113     // delete accels
 114     WX_CLEAR_ARRAY(m_accels);
 115 #endif // wxUSE_ACCEL
 116 }
 117
 118 void wxMenu::Break()
 119 {
 120     // this will take effect during the next call to Append()
 121     m_doBreak = TRUE;
 122 }
 123
 124 #if wxUSE_ACCEL
 125
 126 int wxMenu::FindAccel(int id) const
 127 {
 128     size_t n, count = m_accels.GetCount();
 129     for ( n = 0; n < count; n++ )
 130     {
 131         if ( m_accels[n]->m_command == id )
 132             return n;
 133     }
 134
 135     return wxNOT_FOUND;
 136 }
 137
 138 void wxMenu::UpdateAccel(wxMenuItem *item)
 139 {
 140     if ( item->IsSubMenu() )
 141     {
 142         wxMenu *submenu = item->GetSubMenu();
 143         wxMenuItemList::Node *node = submenu->GetMenuItems().GetFirst();
 144         while ( node )
 145         {
 146             UpdateAccel(node->GetData());
 147
 148             node = node->GetNext();
 149         }
 150     }
 151     else if ( !item->IsSeparator() )
 152     {
 153         // find the (new) accel for this item
 154         wxAcceleratorEntry *accel = wxGetAccelFromString(item->GetText());
 155         if ( accel )
 156             accel->m_command = item->GetId();
 157
 158         // find the old one
 159         int n = FindAccel(item->GetId());
 160         if ( n == wxNOT_FOUND )
 161         {
 162             // no old, add new if any
 163             if ( accel )
 164                 m_accels.Add(accel);
 165             else
 166                 return;     // skipping RebuildAccelTable() below
 167         }
 168         else
 169         {
 170             // replace old with new or just remove the old one if no new
 171             delete m_accels[n];
 172             if ( accel )
 173                 m_accels[n] = accel;
 174             else
 175                 m_accels.RemoveAt(n);
 176         }
 177
 178         if ( IsAttached() )
 179         {
 180             m_menuBar->RebuildAccelTable();
 181         }
 182     }
 183     //else: it is a separator, they can't have accels, nothing to do
 184 }
 185
 186 #endif // wxUSE_ACCEL
 187
 188 // append a new item or submenu to the menu
 189 bool wxMenu::DoInsertOrAppend(wxMenuItem *pItem, size_t pos)
 190 {
 191 #if wxUSE_ACCEL
 192     UpdateAccel(pItem);
 193 #endif // wxUSE_ACCEL
 194
 195     UINT flags = 0;
 196
 197     // if "Break" has just been called, insert a menu break before this item
 198     // (and don't forget to reset the flag)
 199     if ( m_doBreak ) {
 200         flags |= MF_MENUBREAK;
 201         m_doBreak = FALSE;
 202     }
 203
 204     if ( pItem->IsSeparator() ) {
 205         flags |= MF_SEPARATOR;
 206     }
 207
 208     // id is the numeric id for normal menu items and HMENU for submenus as
 209     // required by ::AppendMenu() API
 210     UINT id;
 211     wxMenu *submenu = pItem->GetSubMenu();
 212     if ( submenu != NULL ) {
 213         wxASSERT_MSG( submenu->GetHMenu(), wxT("invalid submenu") );
 214
 215         submenu->SetParent(this);
 216
 217         id = (UINT)submenu->GetHMenu();
 218
 219         flags |= MF_POPUP;
 220     }
 221     else {
 222         id = pItem->GetId();
 223     }
 224
 225     LPCTSTR pData;
 226
 227 #if wxUSE_OWNER_DRAWN
 228     if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 229         // item draws itself, pass pointer to it in data parameter
 230         flags |= MF_OWNERDRAW;
 231         pData = (LPCTSTR)pItem;
 232     }
 233     else
 234 #endif
 235     {
 236         // menu is just a normal string (passed in data parameter)
 237         flags |= MF_STRING;
 238
 239         pData = (wxChar*)pItem->GetText().c_str();
 240     }
 241
 242     BOOL ok;
 243     if ( pos == (size_t)-1 )
 244     {
 245         ok = ::AppendMenu(GetHmenu(), flags, id, pData);
 246     }
 247     else
 248     {
 249         ok = ::InsertMenu(GetHmenu(), pos, flags | MF_BYPOSITION, id, pData);
 250     }
 251
 252     if ( !ok )
 253     {
 254         wxLogLastError(wxT("Insert or AppendMenu"));
 255
 256         return FALSE;
 257     }
 258     else
 259     {
 260         // if we just appended the title, highlight it
 261 #ifdef __WIN32__
 262         if ( (int)id == idMenuTitle )
 263         {
 264             // visually select the menu title
 265             MENUITEMINFO mii;
 266             mii.cbSize = sizeof(mii);
 267             mii.fMask = MIIM_STATE;
 268             mii.fState = MFS_DEFAULT;
 269
 270             if ( !SetMenuItemInfo(GetHmenu(), (unsigned)id, FALSE, &mii) )
 271             {
 272                 wxLogLastError(wxT("SetMenuItemInfo"));
 273             }
 274         }
 275 #endif // __WIN32__
 276
 277         // if we're already attached to the menubar, we must update it
 278         if ( IsAttached() && m_menuBar->IsAttached() )
 279         {
 280             m_menuBar->Refresh();
 281         }
 282
 283         return TRUE;
 284     }
 285 }
 286
 287 bool wxMenu::DoAppend(wxMenuItem *item)
 288 {
 289     return wxMenuBase::DoAppend(item) && DoInsertOrAppend(item);
 290 }
 291
 292 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
 293 {
 294     return wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos);
 295 }
 296
 297 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
 298 {
 299     // we need to find the items position in the child list
 300     size_t pos;
 301     wxMenuItemList::Node *node = GetMenuItems().GetFirst();
 302     for ( pos = 0; node; pos++ )
 303     {
 304         if ( node->GetData() == item )
 305             break;
 306
 307         node = node->GetNext();
 308     }
 309
 310     // DoRemove() (unlike Remove) can only be called for existing item!
 311     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 312
 313 #if wxUSE_ACCEL
 314     // remove the corresponding accel from the accel table
 315     int n = FindAccel(item->GetId());
 316     if ( n != wxNOT_FOUND )
 317     {
 318         delete m_accels[n];
 319
 320         m_accels.RemoveAt(n);
 321     }
 322     //else: this item doesn't have an accel, nothing to do
 323 #endif // wxUSE_ACCEL
 324
 325     // remove the item from the menu
 326     if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 327     {
 328         wxLogLastError(wxT("RemoveMenu"));
 329     }
 330
 331     if ( IsAttached() && m_menuBar->IsAttached() )
 332     {
 333         // otherwise, the chane won't be visible
 334         m_menuBar->Refresh();
 335     }
 336
 337     // and from internal data structures
 338     return wxMenuBase::DoRemove(item);
 339 }
 340
 341 // ---------------------------------------------------------------------------
 342 // accelerator helpers
 343 // ---------------------------------------------------------------------------
 344
 345 #if wxUSE_ACCEL
 346
 347 // create the wxAcceleratorEntries for our accels and put them into provided
 348 // array - return the number of accels we have
 349 size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
 350 {
 351     size_t count = GetAccelCount();
 352     for ( size_t n = 0; n < count; n++ )
 353     {
 354         *accels++ = *m_accels[n];
 355     }
 356
 357     return count;
 358 }
 359
 360 #endif // wxUSE_ACCEL
 361
 362 // ---------------------------------------------------------------------------
 363 // set wxMenu title
 364 // ---------------------------------------------------------------------------
 365
 366 void wxMenu::SetTitle(const wxString& label)
 367 {
 368     bool hasNoTitle = m_title.IsEmpty();
 369     m_title = label;
 370
 371     HMENU hMenu = GetHmenu();
 372
 373     if ( hasNoTitle )
 374     {
 375         if ( !label.IsEmpty() )
 376         {
 377             if ( !::InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 378                                (unsigned)idMenuTitle, m_title) ||
 379                  !::InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 380             {
 381                 wxLogLastError(wxT("InsertMenu"));
 382             }
 383         }
 384     }
 385     else
 386     {
 387         if ( label.IsEmpty() )
 388         {
 389             // remove the title and the separator after it
 390             if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 391                  !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 392             {
 393                 wxLogLastError(wxT("RemoveMenu"));
 394             }
 395         }
 396         else
 397         {
 398             // modify the title
 399             if ( !ModifyMenu(hMenu, 0u,
 400                              MF_BYPOSITION | MF_STRING,
 401                              (unsigned)idMenuTitle, m_title) )
 402             {
 403                 wxLogLastError(wxT("ModifyMenu"));
 404             }
 405         }
 406     }
 407
 408 #ifdef __WIN32__
 409     // put the title string in bold face
 410     if ( !m_title.IsEmpty() )
 411     {
 412         MENUITEMINFO mii;
 413         mii.cbSize = sizeof(mii);
 414         mii.fMask = MIIM_STATE;
 415         mii.fState = MFS_DEFAULT;
 416
 417         if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 418         {
 419             wxLogLastError(wxT("SetMenuItemInfo"));
 420         }
 421     }
 422 #endif // Win32
 423 }
 424
 425 // ---------------------------------------------------------------------------
 426 // event processing
 427 // ---------------------------------------------------------------------------
 428
 429 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 430 {
 431     // ignore commands from the menu title
 432
 433     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 434     if ( id != (WXWORD)idMenuTitle )
 435     {
 436         // VZ: previosuly, the command int was set to id too which was quite
 437         //     useless anyhow (as it could be retrieved using GetId()) and
 438         //     uncompatible with wxGTK, so now we use the command int instead
 439         //     to pass the checked status
 440         SendEvent(id, ::GetMenuState(GetHmenu(), id, MF_BYCOMMAND) & MF_CHECKED);
 441     }
 442
 443     return TRUE;
 444 }
 445
 446 // ---------------------------------------------------------------------------
 447 // other
 448 // ---------------------------------------------------------------------------
 449
 450 wxWindow *wxMenu::GetWindow() const
 451 {
 452     if ( m_invokingWindow != NULL )
 453         return m_invokingWindow;
 454     else if ( m_menuBar != NULL)
 455         return m_menuBar->GetFrame();
 456
 457     return NULL;
 458 }
 459
 460 // ---------------------------------------------------------------------------
 461 // Menu Bar
 462 // ---------------------------------------------------------------------------
 463
 464 void wxMenuBar::Init()
 465 {
 466     m_eventHandler = this;
 467     m_hMenu = 0;
 468 }
 469
 470 wxMenuBar::wxMenuBar()
 471 {
 472     Init();
 473 }
 474
 475 wxMenuBar::wxMenuBar( long WXUNUSED(style) )
 476 {
 477     Init();
 478 }
 479
 480 wxMenuBar::wxMenuBar(int count, wxMenu *menus[], const wxString titles[])
 481 {
 482     Init();
 483
 484     m_titles.Alloc(count);
 485
 486     for ( int i = 0; i < count; i++ )
 487     {
 488         m_menus.Append(menus[i]);
 489         m_titles.Add(titles[i]);
 490
 491         menus[i]->Attach(this);
 492     }
 493 }
 494
 495 wxMenuBar::~wxMenuBar()
 496 {
 497 }
 498
 499 // ---------------------------------------------------------------------------
 500 // wxMenuBar helpers
 501 // ---------------------------------------------------------------------------
 502
 503 void wxMenuBar::Refresh()
 504 {
 505     wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );
 506
 507     DrawMenuBar(GetHwndOf(GetFrame()));
 508 }
 509
 510 WXHMENU wxMenuBar::Create()
 511 {
 512     if ( m_hMenu != 0 )
 513         return m_hMenu;
 514
 515     m_hMenu = (WXHMENU)::CreateMenu();
 516
 517     if ( !m_hMenu )
 518     {
 519         wxLogLastError(wxT("CreateMenu"));
 520     }
 521     else
 522     {
 523         size_t count = GetMenuCount();
 524         for ( size_t i = 0; i < count; i++ )
 525         {
 526             if ( !::AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING,
 527                                (UINT)m_menus[i]->GetHMenu(),
 528                                m_titles[i]) )
 529             {
 530                 wxLogLastError(wxT("AppendMenu"));
 531             }
 532         }
 533     }
 534
 535     return m_hMenu;
 536 }
 537
 538 // ---------------------------------------------------------------------------
 539 // wxMenuBar functions to work with the top level submenus
 540 // ---------------------------------------------------------------------------
 541
 542 // NB: we don't support owner drawn top level items for now, if we do these
 543 //     functions would have to be changed to use wxMenuItem as well
 544
 545 void wxMenuBar::EnableTop(size_t pos, bool enable)
 546 {
 547     wxCHECK_RET( IsAttached(), wxT("doesn't work with unattached menubars") );
 548
 549     int flag = enable ? MF_ENABLED : MF_GRAYED;
 550
 551     EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | flag);
 552
 553     Refresh();
 554 }
 555
 556 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
 557 {
 558     wxCHECK_RET( pos < GetMenuCount(), wxT("invalid menu index") );
 559
 560     m_titles[pos] = label;
 561
 562     if ( !IsAttached() )
 563     {
 564         return;
 565     }
 566     //else: have to modify the existing menu
 567
 568     UINT id;
 569     UINT flagsOld = ::GetMenuState((HMENU)m_hMenu, pos, MF_BYPOSITION);
 570     if ( flagsOld == 0xFFFFFFFF )
 571     {
 572         wxLogLastError(wxT("GetMenuState"));
 573
 574         return;
 575     }
 576
 577     if ( flagsOld & MF_POPUP )
 578     {
 579         // HIBYTE contains the number of items in the submenu in this case
 580         flagsOld &= 0xff;
 581         id = (UINT)::GetSubMenu((HMENU)m_hMenu, pos);
 582     }
 583     else
 584     {
 585         id = pos;
 586     }
 587
 588     if ( ::ModifyMenu(GetHmenu(), pos, MF_BYPOSITION | MF_STRING | flagsOld,
 589                       id, label) == (int)0xFFFFFFFF )
 590     {
 591         wxLogLastError(wxT("ModifyMenu"));
 592     }
 593
 594     Refresh();
 595 }
 596
 597 wxString wxMenuBar::GetLabelTop(size_t pos) const
 598 {
 599     wxCHECK_MSG( pos < GetMenuCount(), wxEmptyString,
 600                  wxT("invalid menu index in wxMenuBar::GetLabelTop") );
 601
 602     return m_titles[pos];
 603 }
 604
 605 // ---------------------------------------------------------------------------
 606 // wxMenuBar construction
 607 // ---------------------------------------------------------------------------
 608
 609 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
 610 {
 611     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
 612     if ( !menuOld )
 613         return FALSE;
 614     m_titles[pos] = title;
 615
 616     if ( IsAttached() )
 617     {
 618         // can't use ModifyMenu() because it deletes the submenu it replaces
 619         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 620         {
 621             wxLogLastError(wxT("RemoveMenu"));
 622         }
 623
 624         if ( !::InsertMenu(GetHmenu(), (UINT)pos,
 625                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 626                            (UINT)GetHmenuOf(menu), title) )
 627         {
 628             wxLogLastError(wxT("InsertMenu"));
 629         }
 630
 631 #if wxUSE_ACCEL
 632         if ( menuOld->HasAccels() || menu->HasAccels() )
 633         {
 634             // need to rebuild accell table
 635             RebuildAccelTable();
 636         }
 637 #endif // wxUSE_ACCEL
 638
 639         Refresh();
 640     }
 641
 642     return menuOld;
 643 }
 644
 645 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
 646 {
 647     if ( !wxMenuBarBase::Insert(pos, menu, title) )
 648         return FALSE;
 649
 650     m_titles.Insert(title, pos);
 651
 652     if ( IsAttached() )
 653     {
 654         if ( !::InsertMenu(GetHmenu(), pos,
 655                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 656                            (UINT)GetHmenuOf(menu), title) )
 657         {
 658             wxLogLastError(wxT("InsertMenu"));
 659         }
 660
 661 #if wxUSE_ACCEL
 662         if ( menu->HasAccels() )
 663         {
 664             // need to rebuild accell table
 665             RebuildAccelTable();
 666         }
 667 #endif // wxUSE_ACCEL
 668
 669         Refresh();
 670     }
 671
 672     return TRUE;
 673 }
 674
 675 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
 676 {
 677     WXHMENU submenu = menu ? menu->GetHMenu() : 0;
 678     wxCHECK_MSG( submenu, FALSE, wxT("can't append invalid menu to menubar") );
 679
 680     if ( !wxMenuBarBase::Append(menu, title) )
 681         return FALSE;
 682
 683     // Already done in Append above
 684     //menu->Attach(this);
 685
 686     m_titles.Add(title);
 687
 688     if ( IsAttached() )
 689     {
 690         if ( !::AppendMenu(GetHmenu(), MF_POPUP | MF_STRING,
 691                            (UINT)submenu, title) )
 692         {
 693             wxLogLastError(wxT("AppendMenu"));
 694         }
 695
 696 #if wxUSE_ACCEL
 697         if ( menu->HasAccels() )
 698         {
 699             // need to rebuild accell table
 700             RebuildAccelTable();
 701         }
 702 #endif // wxUSE_ACCEL
 703
 704         Refresh();
 705     }
 706
 707     return TRUE;
 708 }
 709
 710 wxMenu *wxMenuBar::Remove(size_t pos)
 711 {
 712     wxMenu *menu = wxMenuBarBase::Remove(pos);
 713     if ( !menu )
 714         return NULL;
 715
 716     if ( IsAttached() )
 717     {
 718         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 719         {
 720             wxLogLastError(wxT("RemoveMenu"));
 721         }
 722
 723 #if wxUSE_ACCEL
 724         if ( menu->HasAccels() )
 725         {
 726             // need to rebuild accell table
 727             RebuildAccelTable();
 728         }
 729 #endif // wxUSE_ACCEL
 730
 731         Refresh();
 732     }
 733
 734     m_titles.Remove(pos);
 735
 736     return menu;
 737 }
 738
 739 #if wxUSE_ACCEL
 740
 741 void wxMenuBar::RebuildAccelTable()
 742 {
 743     // merge the accelerators of all menus into one accel table
 744     size_t nAccelCount = 0;
 745     size_t i, count = GetMenuCount();
 746     for ( i = 0; i < count; i++ )
 747     {
 748         nAccelCount += m_menus[i]->GetAccelCount();
 749     }
 750
 751     if ( nAccelCount )
 752     {
 753         wxAcceleratorEntry *accelEntries = new wxAcceleratorEntry[nAccelCount];
 754
 755         nAccelCount = 0;
 756         for ( i = 0; i < count; i++ )
 757         {
 758             nAccelCount += m_menus[i]->CopyAccels(&accelEntries[nAccelCount]);
 759         }
 760
 761         m_accelTable = wxAcceleratorTable(nAccelCount, accelEntries);
 762
 763         delete [] accelEntries;
 764     }
 765 }
 766
 767 #endif // wxUSE_ACCEL
 768
 769 void wxMenuBar::Attach(wxFrame *frame)
 770 {
 771     wxMenuBarBase::Attach(frame);
 772
 773 #if wxUSE_ACCEL
 774     RebuildAccelTable();
 775 #endif // wxUSE_ACCEL
 776 }
 777
 778 void wxMenuBar::Detach()
 779 {
 780     m_hMenu = (WXHMENU)NULL;
 781
 782     wxMenuBarBase::Detach();
 783 }
 784
 785 #endif // wxUSE_MENUS