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 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/menu.h"
  34     #include "wx/utils.h"
  35     #include "wx/intl.h"
  36     #include "wx/log.h"
  37 #endif
  38
  39 #if wxUSE_OWNER_DRAWN
  40     #include "wx/ownerdrw.h"
  41 #endif
  42
  43 #include "wx/msw/private.h"
  44
  45 // other standard headers
  46 #include <string.h>
  47
  48 // ----------------------------------------------------------------------------
  49 // global variables
  50 // ----------------------------------------------------------------------------
  51
  52 extern wxMenu *wxCurrentPopupMenu;
  53
  54 // ----------------------------------------------------------------------------
  55 // constants
  56 // ----------------------------------------------------------------------------
  57
  58 // the (popup) menu title has this special id
  59 static const int idMenuTitle = -2;
  60
  61 // ----------------------------------------------------------------------------
  62 // macros
  63 // ----------------------------------------------------------------------------
  64
  65 #if !USE_SHARED_LIBRARY
  66     IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  67     IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
  68 #endif
  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("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("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     // find the (new) accel for this item
 141     wxAcceleratorEntry *accel = wxGetAccelFromString(item->GetText());
 142     if ( accel )
 143         accel->m_command = item->GetId();
 144
 145     // find the old one
 146     int n = FindAccel(item->GetId());
 147     if ( n == wxNOT_FOUND )
 148     {
 149         // no old, add new if any
 150         if ( accel )
 151             m_accels.Add(accel);
 152         else
 153             return;     // skipping RebuildAccelTable() below
 154     }
 155     else
 156     {
 157         // replace old with new or just remove the old one if no new
 158         delete m_accels[n];
 159         if ( accel )
 160             m_accels[n] = accel;
 161         else
 162             m_accels.Remove(n);
 163     }
 164
 165     if ( IsAttached() )
 166     {
 167         m_menuBar->RebuildAccelTable();
 168     }
 169 }
 170
 171 #endif // wxUSE_ACCEL
 172
 173 // append a new item or submenu to the menu
 174 bool wxMenu::DoInsertOrAppend(wxMenuItem *pItem, size_t pos)
 175 {
 176 #if wxUSE_ACCEL
 177     UpdateAccel(pItem);
 178 #endif // wxUSE_ACCEL
 179
 180     UINT flags = 0;
 181
 182     // if "Break" has just been called, insert a menu break before this item
 183     // (and don't forget to reset the flag)
 184     if ( m_doBreak ) {
 185         flags |= MF_MENUBREAK;
 186         m_doBreak = FALSE;
 187     }
 188
 189     if ( pItem->IsSeparator() ) {
 190         flags |= MF_SEPARATOR;
 191     }
 192
 193     // id is the numeric id for normal menu items and HMENU for submenus as
 194     // required by ::AppendMenu() API
 195     UINT id;
 196     wxMenu *submenu = pItem->GetSubMenu();
 197     if ( submenu != NULL ) {
 198         wxASSERT_MSG( submenu->GetHMenu(), wxT("invalid submenu") );
 199
 200         submenu->SetParent(this);
 201
 202         id = (UINT)submenu->GetHMenu();
 203
 204         flags |= MF_POPUP;
 205     }
 206     else {
 207         id = pItem->GetId();
 208     }
 209
 210     LPCTSTR pData;
 211
 212 #if wxUSE_OWNER_DRAWN
 213     if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 214         // item draws itself, pass pointer to it in data parameter
 215         flags |= MF_OWNERDRAW;
 216         pData = (LPCTSTR)pItem;
 217     }
 218     else
 219 #endif
 220     {
 221         // menu is just a normal string (passed in data parameter)
 222         flags |= MF_STRING;
 223
 224         pData = (char*)pItem->GetText().c_str();
 225     }
 226
 227     BOOL ok;
 228     if ( pos == (size_t)-1 )
 229     {
 230         ok = ::AppendMenu(GetHmenu(), flags, id, pData);
 231     }
 232     else
 233     {
 234         ok = ::InsertMenu(GetHmenu(), pos, flags | MF_BYPOSITION, id, pData);
 235     }
 236
 237     if ( !ok )
 238     {
 239         wxLogLastError("Insert or AppendMenu");
 240
 241         return FALSE;
 242     }
 243     else
 244     {
 245         // if we just appended the title, highlight it
 246 #ifdef __WIN32__
 247         if ( (int)id == idMenuTitle )
 248         {
 249             // visually select the menu title
 250             MENUITEMINFO mii;
 251             mii.cbSize = sizeof(mii);
 252             mii.fMask = MIIM_STATE;
 253             mii.fState = MFS_DEFAULT;
 254
 255             if ( !SetMenuItemInfo(GetHmenu(), (unsigned)id, FALSE, &mii) )
 256             {
 257                 wxLogLastError(wxT("SetMenuItemInfo"));
 258             }
 259         }
 260 #endif // __WIN32__
 261
 262         // if we're already attached to the menubar, we must update it
 263         if ( IsAttached() )
 264         {
 265             m_menuBar->Refresh();
 266         }
 267
 268         return TRUE;
 269     }
 270 }
 271
 272 bool wxMenu::DoAppend(wxMenuItem *item)
 273 {
 274     return wxMenuBase::DoAppend(item) && DoInsertOrAppend(item);
 275 }
 276
 277 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
 278 {
 279     return wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos);
 280 }
 281
 282 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
 283 {
 284     // we need to find the items position in the child list
 285     size_t pos;
 286     wxMenuItemList::Node *node = GetMenuItems().GetFirst();
 287     for ( pos = 0; node; pos++ )
 288     {
 289         if ( node->GetData() == item )
 290             break;
 291
 292         node = node->GetNext();
 293     }
 294
 295     // DoRemove() (unlike Remove) can only be called for existing item!
 296     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 297
 298 #if wxUSE_ACCEL
 299     // remove the corresponding accel from the accel table
 300     int n = FindAccel(item->GetId());
 301     if ( n != wxNOT_FOUND )
 302     {
 303         delete m_accels[n];
 304
 305         m_accels.Remove(n);
 306     }
 307     //else: this item doesn't have an accel, nothing to do
 308 #endif // wxUSE_ACCEL
 309
 310     // remove the item from the menu
 311     if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 312     {
 313         wxLogLastError("RemoveMenu");
 314     }
 315
 316     if ( IsAttached() )
 317     {
 318         // otherwise, the chane won't be visible
 319         m_menuBar->Refresh();
 320     }
 321
 322     // and from internal data structures
 323     return wxMenuBase::DoRemove(item);
 324 }
 325
 326 // ---------------------------------------------------------------------------
 327 // accelerator helpers
 328 // ---------------------------------------------------------------------------
 329
 330 #if wxUSE_ACCEL
 331
 332 // create the wxAcceleratorEntries for our accels and put them into provided
 333 // array - return the number of accels we have
 334 size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
 335 {
 336     size_t count = GetAccelCount();
 337     for ( size_t n = 0; n < count; n++ )
 338     {
 339         *accels++ = *m_accels[n];
 340     }
 341
 342     return count;
 343 }
 344
 345 #endif // wxUSE_ACCEL
 346
 347 // ---------------------------------------------------------------------------
 348 // set wxMenu title
 349 // ---------------------------------------------------------------------------
 350
 351 void wxMenu::SetTitle(const wxString& label)
 352 {
 353     bool hasNoTitle = m_title.IsEmpty();
 354     m_title = label;
 355
 356     HMENU hMenu = GetHmenu();
 357
 358     if ( hasNoTitle )
 359     {
 360         if ( !label.IsEmpty() )
 361         {
 362             if ( !::InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 363                                (unsigned)idMenuTitle, m_title) ||
 364                  !::InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 365             {
 366                 wxLogLastError("InsertMenu");
 367             }
 368         }
 369     }
 370     else
 371     {
 372         if ( label.IsEmpty() )
 373         {
 374             // remove the title and the separator after it
 375             if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 376                  !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 377             {
 378                 wxLogLastError("RemoveMenu");
 379             }
 380         }
 381         else
 382         {
 383             // modify the title
 384             if ( !ModifyMenu(hMenu, 0u,
 385                              MF_BYPOSITION | MF_STRING,
 386                              (unsigned)idMenuTitle, m_title) )
 387             {
 388                 wxLogLastError("ModifyMenu");
 389             }
 390         }
 391     }
 392
 393 #ifdef __WIN32__
 394     // put the title string in bold face
 395     if ( !m_title.IsEmpty() )
 396     {
 397         MENUITEMINFO mii;
 398         mii.cbSize = sizeof(mii);
 399         mii.fMask = MIIM_STATE;
 400         mii.fState = MFS_DEFAULT;
 401
 402         if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 403         {
 404             wxLogLastError("SetMenuItemInfo");
 405         }
 406     }
 407 #endif // Win32
 408 }
 409
 410 // ---------------------------------------------------------------------------
 411 // event processing
 412 // ---------------------------------------------------------------------------
 413
 414 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 415 {
 416     // ignore commands from the menu title
 417
 418     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 419     if ( id != (WXWORD)idMenuTitle )
 420     {
 421         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 422         event.SetEventObject( this );
 423         event.SetId( id );
 424         event.SetInt( id );
 425         ProcessCommand(event);
 426     }
 427
 428     return TRUE;
 429 }
 430
 431 bool wxMenu::ProcessCommand(wxCommandEvent & event)
 432 {
 433     bool processed = FALSE;
 434
 435 #if wxUSE_MENU_CALLBACK
 436     // Try a callback
 437     if (m_callback)
 438     {
 439         (void)(*(m_callback))(*this, event);
 440         processed = TRUE;
 441     }
 442 #endif // wxUSE_MENU_CALLBACK
 443
 444     // Try the menu's event handler
 445     if ( !processed && GetEventHandler())
 446     {
 447         processed = GetEventHandler()->ProcessEvent(event);
 448     }
 449
 450     // Try the window the menu was popped up from (and up through the
 451     // hierarchy)
 452     wxWindow *win = GetInvokingWindow();
 453     if ( !processed && win )
 454         processed = win->GetEventHandler()->ProcessEvent(event);
 455
 456     return processed;
 457 }
 458
 459 // ---------------------------------------------------------------------------
 460 // other
 461 // ---------------------------------------------------------------------------
 462
 463 void wxMenu::Attach(wxMenuBar *menubar)
 464 {
 465     // menu can be in at most one menubar because otherwise they would both
 466     // delete the menu pointer
 467     wxASSERT_MSG( !m_menuBar, wxT("menu belongs to 2 menubars, expect a crash") );
 468
 469     m_menuBar = menubar;
 470 }
 471
 472 void wxMenu::Detach()
 473 {
 474     wxASSERT_MSG( m_menuBar, wxT("can't detach menu if it's not attached") );
 475
 476     m_menuBar = NULL;
 477 }
 478
 479 wxWindow *wxMenu::GetWindow() const
 480 {
 481     if ( m_invokingWindow != NULL )
 482         return m_invokingWindow;
 483     else if ( m_menuBar != NULL)
 484         return m_menuBar->GetFrame();
 485
 486     return NULL;
 487 }
 488
 489 // ---------------------------------------------------------------------------
 490 // Menu Bar
 491 // ---------------------------------------------------------------------------
 492
 493 void wxMenuBar::Init()
 494 {
 495     m_eventHandler = this;
 496     m_menuBarFrame = NULL;
 497     m_hMenu = 0;
 498 }
 499
 500 wxMenuBar::wxMenuBar()
 501 {
 502     Init();
 503 }
 504
 505 wxMenuBar::wxMenuBar( long WXUNUSED(style) )
 506 {
 507     Init();
 508 }
 509
 510 wxMenuBar::wxMenuBar(int count, wxMenu *menus[], const wxString titles[])
 511 {
 512     Init();
 513
 514     m_titles.Alloc(count);
 515
 516     for ( int i = 0; i < count; i++ )
 517     {
 518         m_menus.Append(menus[i]);
 519         m_titles.Add(titles[i]);
 520
 521         menus[i]->Attach(this);
 522     }
 523 }
 524
 525 wxMenuBar::~wxMenuBar()
 526 {
 527 }
 528
 529 // ---------------------------------------------------------------------------
 530 // wxMenuBar helpers
 531 // ---------------------------------------------------------------------------
 532
 533 void wxMenuBar::Refresh()
 534 {
 535     wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );
 536
 537     DrawMenuBar(GetHwndOf(m_menuBarFrame));
 538 }
 539
 540 WXHMENU wxMenuBar::Create()
 541 {
 542     if (m_hMenu != 0 )
 543         return m_hMenu;
 544
 545     wxCHECK_MSG( !m_hMenu, TRUE, wxT("menubar already created") );
 546
 547     m_hMenu = (WXHMENU)::CreateMenu();
 548
 549     if ( !m_hMenu )
 550     {
 551         wxLogLastError("CreateMenu");
 552     }
 553     else
 554     {
 555         size_t count = GetMenuCount();
 556         for ( size_t i = 0; i < count; i++ )
 557         {
 558             if ( !::AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING,
 559                                (UINT)m_menus[i]->GetHMenu(),
 560                                m_titles[i]) )
 561             {
 562                 wxLogLastError("AppendMenu");
 563             }
 564         }
 565     }
 566
 567     return m_hMenu;
 568 }
 569
 570 // ---------------------------------------------------------------------------
 571 // wxMenuBar functions to work with the top level submenus
 572 // ---------------------------------------------------------------------------
 573
 574 // NB: we don't support owner drawn top level items for now, if we do these
 575 //     functions would have to be changed to use wxMenuItem as well
 576
 577 void wxMenuBar::EnableTop(size_t pos, bool enable)
 578 {
 579     wxCHECK_RET( IsAttached(), wxT("doesn't work with unattached menubars") );
 580
 581     int flag = enable ? MF_ENABLED : MF_GRAYED;
 582
 583     EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | flag);
 584
 585     Refresh();
 586 }
 587
 588 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
 589 {
 590     wxCHECK_RET( pos < GetMenuCount(), wxT("invalid menu index") );
 591
 592     m_titles[pos] = label;
 593
 594     if ( !IsAttached() )
 595     {
 596         return;
 597     }
 598     //else: have to modify the existing menu
 599
 600     UINT id;
 601     UINT flagsOld = ::GetMenuState((HMENU)m_hMenu, pos, MF_BYPOSITION);
 602     if ( flagsOld == 0xFFFFFFFF )
 603     {
 604         wxLogLastError(wxT("GetMenuState"));
 605
 606         return;
 607     }
 608
 609     if ( flagsOld & MF_POPUP )
 610     {
 611         // HIBYTE contains the number of items in the submenu in this case
 612         flagsOld &= 0xff;
 613         id = (UINT)::GetSubMenu((HMENU)m_hMenu, pos);
 614     }
 615     else
 616     {
 617         id = pos;
 618     }
 619
 620     if ( ::ModifyMenu(GetHmenu(), pos, MF_BYPOSITION | MF_STRING | flagsOld,
 621                       id, label) == (int)0xFFFFFFFF )
 622     {
 623         wxLogLastError("ModifyMenu");
 624     }
 625
 626     Refresh();
 627 }
 628
 629 wxString wxMenuBar::GetLabelTop(size_t pos) const
 630 {
 631     wxCHECK_MSG( pos < GetMenuCount(), wxEmptyString,
 632                  wxT("invalid menu index in wxMenuBar::GetLabelTop") );
 633
 634     return m_titles[pos];
 635 }
 636
 637 int wxMenuBar::FindMenu(const wxString& title)
 638 {
 639     wxString menuTitle = wxStripMenuCodes(title);
 640
 641     size_t count = GetMenuCount();
 642     for ( size_t i = 0; i < count; i++ )
 643     {
 644         wxString title = wxStripMenuCodes(m_titles[i]);
 645         if ( menuTitle == title )
 646             return i;
 647     }
 648
 649     return wxNOT_FOUND;
 650
 651 }
 652
 653 // ---------------------------------------------------------------------------
 654 // wxMenuBar construction
 655 // ---------------------------------------------------------------------------
 656
 657 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
 658 {
 659     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
 660     if ( !menuOld )
 661         return FALSE;
 662     m_titles[pos] = title;
 663
 664     if ( IsAttached() )
 665     {
 666         // can't use ModifyMenu() because it deletes the submenu it replaces
 667         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 668         {
 669             wxLogLastError("RemoveMenu");
 670         }
 671
 672         if ( !::InsertMenu(GetHmenu(), (UINT)pos,
 673                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 674                            (UINT)GetHmenuOf(menu), title) )
 675         {
 676             wxLogLastError("InsertMenu");
 677         }
 678
 679 #if wxUSE_ACCEL
 680         if ( menuOld->HasAccels() || menu->HasAccels() )
 681         {
 682             // need to rebuild accell table
 683             RebuildAccelTable();
 684         }
 685 #endif // wxUSE_ACCEL
 686
 687         Refresh();
 688     }
 689
 690     return menuOld;
 691 }
 692
 693 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
 694 {
 695     if ( !wxMenuBarBase::Insert(pos, menu, title) )
 696         return FALSE;
 697
 698     m_titles.Insert(title, pos);
 699
 700     menu->Attach(this);
 701
 702     if ( IsAttached() )
 703     {
 704         if ( !::InsertMenu(GetHmenu(), pos,
 705                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 706                            (UINT)GetHmenuOf(menu), title) )
 707         {
 708             wxLogLastError("InsertMenu");
 709         }
 710
 711 #if wxUSE_ACCEL
 712         if ( menu->HasAccels() )
 713         {
 714             // need to rebuild accell table
 715             RebuildAccelTable();
 716         }
 717 #endif // wxUSE_ACCEL
 718
 719         Refresh();
 720     }
 721
 722     return TRUE;
 723 }
 724
 725 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
 726 {
 727     WXHMENU submenu = menu ? menu->GetHMenu() : 0;
 728     wxCHECK_MSG( submenu, FALSE, wxT("can't append invalid menu to menubar") );
 729
 730     if ( !wxMenuBarBase::Append(menu, title) )
 731         return FALSE;
 732
 733     menu->Attach(this);
 734
 735     m_titles.Add(title);
 736
 737     if ( IsAttached() )
 738     {
 739         if ( !::AppendMenu(GetHmenu(), MF_POPUP | MF_STRING,
 740                            (UINT)submenu, title) )
 741         {
 742             wxLogLastError(wxT("AppendMenu"));
 743         }
 744
 745 #if wxUSE_ACCEL
 746         if ( menu->HasAccels() )
 747         {
 748             // need to rebuild accell table
 749             RebuildAccelTable();
 750         }
 751 #endif // wxUSE_ACCEL
 752
 753         Refresh();
 754     }
 755
 756     return TRUE;
 757 }
 758
 759 wxMenu *wxMenuBar::Remove(size_t pos)
 760 {
 761     wxMenu *menu = wxMenuBarBase::Remove(pos);
 762     if ( !menu )
 763         return NULL;
 764
 765     if ( IsAttached() )
 766     {
 767         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 768         {
 769             wxLogLastError("RemoveMenu");
 770         }
 771
 772         menu->Detach();
 773
 774 #if wxUSE_ACCEL
 775         if ( menu->HasAccels() )
 776         {
 777             // need to rebuild accell table
 778             RebuildAccelTable();
 779         }
 780 #endif // wxUSE_ACCEL
 781
 782         Refresh();
 783     }
 784
 785     m_titles.Remove(pos);
 786
 787     return menu;
 788 }
 789
 790 #if wxUSE_ACCEL
 791
 792 void wxMenuBar::RebuildAccelTable()
 793 {
 794     // merge the accelerators of all menus into one accel table
 795     size_t nAccelCount = 0;
 796     size_t i, count = GetMenuCount();
 797     for ( i = 0; i < count; i++ )
 798     {
 799         nAccelCount += m_menus[i]->GetAccelCount();
 800     }
 801
 802     if ( nAccelCount )
 803     {
 804         wxAcceleratorEntry *accelEntries = new wxAcceleratorEntry[nAccelCount];
 805
 806         nAccelCount = 0;
 807         for ( i = 0; i < count; i++ )
 808         {
 809             nAccelCount += m_menus[i]->CopyAccels(&accelEntries[nAccelCount]);
 810         }
 811
 812         m_accelTable = wxAcceleratorTable(nAccelCount, accelEntries);
 813
 814         delete [] accelEntries;
 815     }
 816 }
 817
 818 #endif // wxUSE_ACCEL
 819
 820 void wxMenuBar::Attach(wxFrame *frame)
 821 {
 822 //    wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 823
 824     m_menuBarFrame = frame;
 825
 826 #if wxUSE_ACCEL
 827     RebuildAccelTable();
 828 #endif // wxUSE_ACCEL
 829 }
 830
 831 void wxMenuBar::Detach()
 832 {
 833 //    ::DestroyMenu((HMENU)m_hMenu);
 834     m_hMenu = (WXHMENU)NULL;
 835     m_menuBarFrame = NULL;
 836 }
 837
 838
 839 // ---------------------------------------------------------------------------
 840 // wxMenuBar searching for menu items
 841 // ---------------------------------------------------------------------------
 842
 843 // Find the itemString in menuString, and return the item id or wxNOT_FOUND
 844 int wxMenuBar::FindMenuItem(const wxString& menuString,
 845                             const wxString& itemString) const
 846 {
 847     wxString menuLabel = wxStripMenuCodes(menuString);
 848     size_t count = GetMenuCount();
 849     for ( size_t i = 0; i < count; i++ )
 850     {
 851         wxString title = wxStripMenuCodes(m_titles[i]);
 852         if ( menuString == title )
 853             return m_menus[i]->FindItem(itemString);
 854     }
 855
 856     return wxNOT_FOUND;
 857 }
 858
 859 wxMenuItem *wxMenuBar::FindItem(int id, wxMenu **itemMenu) const
 860 {
 861     if ( itemMenu )
 862         *itemMenu = NULL;
 863
 864     wxMenuItem *item = NULL;
 865     size_t count = GetMenuCount();
 866     for ( size_t i = 0; !item && (i < count); i++ )
 867     {
 868         item = m_menus[i]->FindItem(id, itemMenu);
 869     }
 870
 871     return item;
 872 }
 873