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     IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  66     IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
  67
  68 // ============================================================================
  69 // implementation
  70 // ============================================================================
  71
  72 // ---------------------------------------------------------------------------
  73 // wxMenu construction, adding and removing menu items
  74 // ---------------------------------------------------------------------------
  75
  76 // Construct a menu with optional title (then use append)
  77 void wxMenu::Init()
  78 {
  79     m_doBreak = FALSE;
  80
  81     // create the menu
  82     m_hMenu = (WXHMENU)CreatePopupMenu();
  83     if ( !m_hMenu )
  84     {
  85         wxLogLastError("CreatePopupMenu");
  86     }
  87
  88     // if we have a title, insert it in the beginning of the menu
  89     if ( !!m_title )
  90     {
  91         Append(idMenuTitle, m_title);
  92         AppendSeparator();
  93     }
  94 }
  95
  96 // The wxWindow destructor will take care of deleting the submenus.
  97 wxMenu::~wxMenu()
  98 {
  99     // we should free Windows resources only if Windows doesn't do it for us
 100     // which happens if we're attached to a menubar or a submenu of another
 101     // menu
 102     if ( !IsAttached() && !GetParent() )
 103     {
 104         if ( !::DestroyMenu(GetHmenu()) )
 105         {
 106             wxLogLastError("DestroyMenu");
 107         }
 108     }
 109
 110 #if wxUSE_ACCEL
 111     // delete accels
 112     WX_CLEAR_ARRAY(m_accels);
 113 #endif // wxUSE_ACCEL
 114 }
 115
 116 void wxMenu::Break()
 117 {
 118     // this will take effect during the next call to Append()
 119     m_doBreak = TRUE;
 120 }
 121
 122 #if wxUSE_ACCEL
 123
 124 int wxMenu::FindAccel(int id) const
 125 {
 126     size_t n, count = m_accels.GetCount();
 127     for ( n = 0; n < count; n++ )
 128     {
 129         if ( m_accels[n]->m_command == id )
 130             return n;
 131     }
 132
 133     return wxNOT_FOUND;
 134 }
 135
 136 void wxMenu::UpdateAccel(wxMenuItem *item)
 137 {
 138     // find the (new) accel for this item
 139     wxAcceleratorEntry *accel = wxGetAccelFromString(item->GetText());
 140     if ( accel )
 141         accel->m_command = item->GetId();
 142
 143     // find the old one
 144     int n = FindAccel(item->GetId());
 145     if ( n == wxNOT_FOUND )
 146     {
 147         // no old, add new if any
 148         if ( accel )
 149             m_accels.Add(accel);
 150         else
 151             return;     // skipping RebuildAccelTable() below
 152     }
 153     else
 154     {
 155         // replace old with new or just remove the old one if no new
 156         delete m_accels[n];
 157         if ( accel )
 158             m_accels[n] = accel;
 159         else
 160             m_accels.Remove(n);
 161     }
 162
 163     if ( IsAttached() )
 164     {
 165         m_menuBar->RebuildAccelTable();
 166     }
 167 }
 168
 169 #endif // wxUSE_ACCEL
 170
 171 // append a new item or submenu to the menu
 172 bool wxMenu::DoInsertOrAppend(wxMenuItem *pItem, size_t pos)
 173 {
 174 #if wxUSE_ACCEL
 175     UpdateAccel(pItem);
 176 #endif // wxUSE_ACCEL
 177
 178     UINT flags = 0;
 179
 180     // if "Break" has just been called, insert a menu break before this item
 181     // (and don't forget to reset the flag)
 182     if ( m_doBreak ) {
 183         flags |= MF_MENUBREAK;
 184         m_doBreak = FALSE;
 185     }
 186
 187     if ( pItem->IsSeparator() ) {
 188         flags |= MF_SEPARATOR;
 189     }
 190
 191     // id is the numeric id for normal menu items and HMENU for submenus as
 192     // required by ::AppendMenu() API
 193     UINT id;
 194     wxMenu *submenu = pItem->GetSubMenu();
 195     if ( submenu != NULL ) {
 196         wxASSERT_MSG( submenu->GetHMenu(), wxT("invalid submenu") );
 197
 198         submenu->SetParent(this);
 199
 200         id = (UINT)submenu->GetHMenu();
 201
 202         flags |= MF_POPUP;
 203     }
 204     else {
 205         id = pItem->GetId();
 206     }
 207
 208     LPCTSTR pData;
 209
 210 #if wxUSE_OWNER_DRAWN
 211     if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 212         // item draws itself, pass pointer to it in data parameter
 213         flags |= MF_OWNERDRAW;
 214         pData = (LPCTSTR)pItem;
 215     }
 216     else
 217 #endif
 218     {
 219         // menu is just a normal string (passed in data parameter)
 220         flags |= MF_STRING;
 221
 222         pData = (char*)pItem->GetText().c_str();
 223     }
 224
 225     BOOL ok;
 226     if ( pos == (size_t)-1 )
 227     {
 228         ok = ::AppendMenu(GetHmenu(), flags, id, pData);
 229     }
 230     else
 231     {
 232         ok = ::InsertMenu(GetHmenu(), pos, flags | MF_BYPOSITION, id, pData);
 233     }
 234
 235     if ( !ok )
 236     {
 237         wxLogLastError("Insert or AppendMenu");
 238
 239         return FALSE;
 240     }
 241     else
 242     {
 243         // if we just appended the title, highlight it
 244 #ifdef __WIN32__
 245         if ( (int)id == idMenuTitle )
 246         {
 247             // visually select the menu title
 248             MENUITEMINFO mii;
 249             mii.cbSize = sizeof(mii);
 250             mii.fMask = MIIM_STATE;
 251             mii.fState = MFS_DEFAULT;
 252
 253             if ( !SetMenuItemInfo(GetHmenu(), (unsigned)id, FALSE, &mii) )
 254             {
 255                 wxLogLastError(wxT("SetMenuItemInfo"));
 256             }
 257         }
 258 #endif // __WIN32__
 259
 260         // if we're already attached to the menubar, we must update it
 261         if ( IsAttached() )
 262         {
 263             m_menuBar->Refresh();
 264         }
 265
 266         return TRUE;
 267     }
 268 }
 269
 270 bool wxMenu::DoAppend(wxMenuItem *item)
 271 {
 272     return wxMenuBase::DoAppend(item) && DoInsertOrAppend(item);
 273 }
 274
 275 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
 276 {
 277     return wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos);
 278 }
 279
 280 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
 281 {
 282     // we need to find the items position in the child list
 283     size_t pos;
 284     wxMenuItemList::Node *node = GetMenuItems().GetFirst();
 285     for ( pos = 0; node; pos++ )
 286     {
 287         if ( node->GetData() == item )
 288             break;
 289
 290         node = node->GetNext();
 291     }
 292
 293     // DoRemove() (unlike Remove) can only be called for existing item!
 294     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 295
 296 #if wxUSE_ACCEL
 297     // remove the corresponding accel from the accel table
 298     int n = FindAccel(item->GetId());
 299     if ( n != wxNOT_FOUND )
 300     {
 301         delete m_accels[n];
 302
 303         m_accels.Remove(n);
 304     }
 305     //else: this item doesn't have an accel, nothing to do
 306 #endif // wxUSE_ACCEL
 307
 308     // remove the item from the menu
 309     if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 310     {
 311         wxLogLastError("RemoveMenu");
 312     }
 313
 314     if ( IsAttached() )
 315     {
 316         // otherwise, the chane won't be visible
 317         m_menuBar->Refresh();
 318     }
 319
 320     // and from internal data structures
 321     return wxMenuBase::DoRemove(item);
 322 }
 323
 324 // ---------------------------------------------------------------------------
 325 // accelerator helpers
 326 // ---------------------------------------------------------------------------
 327
 328 #if wxUSE_ACCEL
 329
 330 // create the wxAcceleratorEntries for our accels and put them into provided
 331 // array - return the number of accels we have
 332 size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
 333 {
 334     size_t count = GetAccelCount();
 335     for ( size_t n = 0; n < count; n++ )
 336     {
 337         *accels++ = *m_accels[n];
 338     }
 339
 340     return count;
 341 }
 342
 343 #endif // wxUSE_ACCEL
 344
 345 // ---------------------------------------------------------------------------
 346 // set wxMenu title
 347 // ---------------------------------------------------------------------------
 348
 349 void wxMenu::SetTitle(const wxString& label)
 350 {
 351     bool hasNoTitle = m_title.IsEmpty();
 352     m_title = label;
 353
 354     HMENU hMenu = GetHmenu();
 355
 356     if ( hasNoTitle )
 357     {
 358         if ( !label.IsEmpty() )
 359         {
 360             if ( !::InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 361                                (unsigned)idMenuTitle, m_title) ||
 362                  !::InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 363             {
 364                 wxLogLastError("InsertMenu");
 365             }
 366         }
 367     }
 368     else
 369     {
 370         if ( label.IsEmpty() )
 371         {
 372             // remove the title and the separator after it
 373             if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 374                  !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 375             {
 376                 wxLogLastError("RemoveMenu");
 377             }
 378         }
 379         else
 380         {
 381             // modify the title
 382             if ( !ModifyMenu(hMenu, 0u,
 383                              MF_BYPOSITION | MF_STRING,
 384                              (unsigned)idMenuTitle, m_title) )
 385             {
 386                 wxLogLastError("ModifyMenu");
 387             }
 388         }
 389     }
 390
 391 #ifdef __WIN32__
 392     // put the title string in bold face
 393     if ( !m_title.IsEmpty() )
 394     {
 395         MENUITEMINFO mii;
 396         mii.cbSize = sizeof(mii);
 397         mii.fMask = MIIM_STATE;
 398         mii.fState = MFS_DEFAULT;
 399
 400         if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 401         {
 402             wxLogLastError("SetMenuItemInfo");
 403         }
 404     }
 405 #endif // Win32
 406 }
 407
 408 // ---------------------------------------------------------------------------
 409 // event processing
 410 // ---------------------------------------------------------------------------
 411
 412 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 413 {
 414     // ignore commands from the menu title
 415
 416     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 417     if ( id != (WXWORD)idMenuTitle )
 418     {
 419         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 420         event.SetEventObject( this );
 421         event.SetId( id );
 422         event.SetInt( id );
 423         ProcessCommand(event);
 424     }
 425
 426     return TRUE;
 427 }
 428
 429 bool wxMenu::ProcessCommand(wxCommandEvent & event)
 430 {
 431     bool processed = FALSE;
 432
 433 #if wxUSE_MENU_CALLBACK
 434     // Try a callback
 435     if (m_callback)
 436     {
 437         (void)(*(m_callback))(*this, event);
 438         processed = TRUE;
 439     }
 440 #endif // wxUSE_MENU_CALLBACK
 441
 442     // Try the menu's event handler
 443     if ( !processed && GetEventHandler())
 444     {
 445         processed = GetEventHandler()->ProcessEvent(event);
 446     }
 447
 448     // Try the window the menu was popped up from (and up through the
 449     // hierarchy)
 450     wxWindow *win = GetInvokingWindow();
 451     if ( !processed && win )
 452         processed = win->GetEventHandler()->ProcessEvent(event);
 453
 454     return processed;
 455 }
 456
 457 // ---------------------------------------------------------------------------
 458 // other
 459 // ---------------------------------------------------------------------------
 460
 461 void wxMenu::Attach(wxMenuBar *menubar)
 462 {
 463     // menu can be in at most one menubar because otherwise they would both
 464     // delete the menu pointer
 465     wxASSERT_MSG( !m_menuBar, wxT("menu belongs to 2 menubars, expect a crash") );
 466
 467     m_menuBar = menubar;
 468 }
 469
 470 void wxMenu::Detach()
 471 {
 472     wxASSERT_MSG( m_menuBar, wxT("can't detach menu if it's not attached") );
 473
 474     m_menuBar = NULL;
 475 }
 476
 477 wxWindow *wxMenu::GetWindow() const
 478 {
 479     if ( m_invokingWindow != NULL )
 480         return m_invokingWindow;
 481     else if ( m_menuBar != NULL)
 482         return m_menuBar->GetFrame();
 483
 484     return NULL;
 485 }
 486
 487 // ---------------------------------------------------------------------------
 488 // Menu Bar
 489 // ---------------------------------------------------------------------------
 490
 491 void wxMenuBar::Init()
 492 {
 493     m_eventHandler = this;
 494     m_menuBarFrame = NULL;
 495     m_hMenu = 0;
 496 }
 497
 498 wxMenuBar::wxMenuBar()
 499 {
 500     Init();
 501 }
 502
 503 wxMenuBar::wxMenuBar( long WXUNUSED(style) )
 504 {
 505     Init();
 506 }
 507
 508 wxMenuBar::wxMenuBar(int count, wxMenu *menus[], const wxString titles[])
 509 {
 510     Init();
 511
 512     m_titles.Alloc(count);
 513
 514     for ( int i = 0; i < count; i++ )
 515     {
 516         m_menus.Append(menus[i]);
 517         m_titles.Add(titles[i]);
 518
 519         menus[i]->Attach(this);
 520     }
 521 }
 522
 523 wxMenuBar::~wxMenuBar()
 524 {
 525 }
 526
 527 // ---------------------------------------------------------------------------
 528 // wxMenuBar helpers
 529 // ---------------------------------------------------------------------------
 530
 531 void wxMenuBar::Refresh()
 532 {
 533     wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );
 534
 535     DrawMenuBar(GetHwndOf(m_menuBarFrame));
 536 }
 537
 538 WXHMENU wxMenuBar::Create()
 539 {
 540     if (m_hMenu != 0 )
 541         return m_hMenu;
 542
 543     wxCHECK_MSG( !m_hMenu, TRUE, wxT("menubar already created") );
 544
 545     m_hMenu = (WXHMENU)::CreateMenu();
 546
 547     if ( !m_hMenu )
 548     {
 549         wxLogLastError("CreateMenu");
 550     }
 551     else
 552     {
 553         size_t count = GetMenuCount();
 554         for ( size_t i = 0; i < count; i++ )
 555         {
 556             if ( !::AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING,
 557                                (UINT)m_menus[i]->GetHMenu(),
 558                                m_titles[i]) )
 559             {
 560                 wxLogLastError("AppendMenu");
 561             }
 562         }
 563     }
 564
 565     return m_hMenu;
 566 }
 567
 568 // ---------------------------------------------------------------------------
 569 // wxMenuBar functions to work with the top level submenus
 570 // ---------------------------------------------------------------------------
 571
 572 // NB: we don't support owner drawn top level items for now, if we do these
 573 //     functions would have to be changed to use wxMenuItem as well
 574
 575 void wxMenuBar::EnableTop(size_t pos, bool enable)
 576 {
 577     wxCHECK_RET( IsAttached(), wxT("doesn't work with unattached menubars") );
 578
 579     int flag = enable ? MF_ENABLED : MF_GRAYED;
 580
 581     EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | flag);
 582
 583     Refresh();
 584 }
 585
 586 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
 587 {
 588     wxCHECK_RET( pos < GetMenuCount(), wxT("invalid menu index") );
 589
 590     m_titles[pos] = label;
 591
 592     if ( !IsAttached() )
 593     {
 594         return;
 595     }
 596     //else: have to modify the existing menu
 597
 598     UINT id;
 599     UINT flagsOld = ::GetMenuState((HMENU)m_hMenu, pos, MF_BYPOSITION);
 600     if ( flagsOld == 0xFFFFFFFF )
 601     {
 602         wxLogLastError(wxT("GetMenuState"));
 603
 604         return;
 605     }
 606
 607     if ( flagsOld & MF_POPUP )
 608     {
 609         // HIBYTE contains the number of items in the submenu in this case
 610         flagsOld &= 0xff;
 611         id = (UINT)::GetSubMenu((HMENU)m_hMenu, pos);
 612     }
 613     else
 614     {
 615         id = pos;
 616     }
 617
 618     if ( ::ModifyMenu(GetHmenu(), pos, MF_BYPOSITION | MF_STRING | flagsOld,
 619                       id, label) == (int)0xFFFFFFFF )
 620     {
 621         wxLogLastError("ModifyMenu");
 622     }
 623
 624     Refresh();
 625 }
 626
 627 wxString wxMenuBar::GetLabelTop(size_t pos) const
 628 {
 629     wxCHECK_MSG( pos < GetMenuCount(), wxEmptyString,
 630                  wxT("invalid menu index in wxMenuBar::GetLabelTop") );
 631
 632     return m_titles[pos];
 633 }
 634
 635 int wxMenuBar::FindMenu(const wxString& title)
 636 {
 637     wxString menuTitle = wxStripMenuCodes(title);
 638
 639     size_t count = GetMenuCount();
 640     for ( size_t i = 0; i < count; i++ )
 641     {
 642         wxString title = wxStripMenuCodes(m_titles[i]);
 643         if ( menuTitle == title )
 644             return i;
 645     }
 646
 647     return wxNOT_FOUND;
 648
 649 }
 650
 651 // ---------------------------------------------------------------------------
 652 // wxMenuBar construction
 653 // ---------------------------------------------------------------------------
 654
 655 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
 656 {
 657     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
 658     if ( !menuOld )
 659         return FALSE;
 660     m_titles[pos] = title;
 661
 662     if ( IsAttached() )
 663     {
 664         // can't use ModifyMenu() because it deletes the submenu it replaces
 665         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 666         {
 667             wxLogLastError("RemoveMenu");
 668         }
 669
 670         if ( !::InsertMenu(GetHmenu(), (UINT)pos,
 671                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 672                            (UINT)GetHmenuOf(menu), title) )
 673         {
 674             wxLogLastError("InsertMenu");
 675         }
 676
 677 #if wxUSE_ACCEL
 678         if ( menuOld->HasAccels() || menu->HasAccels() )
 679         {
 680             // need to rebuild accell table
 681             RebuildAccelTable();
 682         }
 683 #endif // wxUSE_ACCEL
 684
 685         Refresh();
 686     }
 687
 688     return menuOld;
 689 }
 690
 691 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
 692 {
 693     if ( !wxMenuBarBase::Insert(pos, menu, title) )
 694         return FALSE;
 695
 696     m_titles.Insert(title, pos);
 697
 698     menu->Attach(this);
 699
 700     if ( IsAttached() )
 701     {
 702         if ( !::InsertMenu(GetHmenu(), pos,
 703                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 704                            (UINT)GetHmenuOf(menu), title) )
 705         {
 706             wxLogLastError("InsertMenu");
 707         }
 708
 709 #if wxUSE_ACCEL
 710         if ( menu->HasAccels() )
 711         {
 712             // need to rebuild accell table
 713             RebuildAccelTable();
 714         }
 715 #endif // wxUSE_ACCEL
 716
 717         Refresh();
 718     }
 719
 720     return TRUE;
 721 }
 722
 723 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
 724 {
 725     WXHMENU submenu = menu ? menu->GetHMenu() : 0;
 726     wxCHECK_MSG( submenu, FALSE, wxT("can't append invalid menu to menubar") );
 727
 728     if ( !wxMenuBarBase::Append(menu, title) )
 729         return FALSE;
 730
 731     menu->Attach(this);
 732
 733     m_titles.Add(title);
 734
 735     if ( IsAttached() )
 736     {
 737         if ( !::AppendMenu(GetHmenu(), MF_POPUP | MF_STRING,
 738                            (UINT)submenu, title) )
 739         {
 740             wxLogLastError(wxT("AppendMenu"));
 741         }
 742
 743 #if wxUSE_ACCEL
 744         if ( menu->HasAccels() )
 745         {
 746             // need to rebuild accell table
 747             RebuildAccelTable();
 748         }
 749 #endif // wxUSE_ACCEL
 750
 751         Refresh();
 752     }
 753
 754     return TRUE;
 755 }
 756
 757 wxMenu *wxMenuBar::Remove(size_t pos)
 758 {
 759     wxMenu *menu = wxMenuBarBase::Remove(pos);
 760     if ( !menu )
 761         return NULL;
 762
 763     if ( IsAttached() )
 764     {
 765         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 766         {
 767             wxLogLastError("RemoveMenu");
 768         }
 769
 770         menu->Detach();
 771
 772 #if wxUSE_ACCEL
 773         if ( menu->HasAccels() )
 774         {
 775             // need to rebuild accell table
 776             RebuildAccelTable();
 777         }
 778 #endif // wxUSE_ACCEL
 779
 780         Refresh();
 781     }
 782
 783     m_titles.Remove(pos);
 784
 785     return menu;
 786 }
 787
 788 #if wxUSE_ACCEL
 789
 790 void wxMenuBar::RebuildAccelTable()
 791 {
 792     // merge the accelerators of all menus into one accel table
 793     size_t nAccelCount = 0;
 794     size_t i, count = GetMenuCount();
 795     for ( i = 0; i < count; i++ )
 796     {
 797         nAccelCount += m_menus[i]->GetAccelCount();
 798     }
 799
 800     if ( nAccelCount )
 801     {
 802         wxAcceleratorEntry *accelEntries = new wxAcceleratorEntry[nAccelCount];
 803
 804         nAccelCount = 0;
 805         for ( i = 0; i < count; i++ )
 806         {
 807             nAccelCount += m_menus[i]->CopyAccels(&accelEntries[nAccelCount]);
 808         }
 809
 810         m_accelTable = wxAcceleratorTable(nAccelCount, accelEntries);
 811
 812         delete [] accelEntries;
 813     }
 814 }
 815
 816 #endif // wxUSE_ACCEL
 817
 818 void wxMenuBar::Attach(wxFrame *frame)
 819 {
 820 //    wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 821
 822     m_menuBarFrame = frame;
 823
 824 #if wxUSE_ACCEL
 825     RebuildAccelTable();
 826 #endif // wxUSE_ACCEL
 827 }
 828
 829 void wxMenuBar::Detach()
 830 {
 831 //    ::DestroyMenu((HMENU)m_hMenu);
 832     m_hMenu = (WXHMENU)NULL;
 833     m_menuBarFrame = NULL;
 834 }
 835
 836
 837 // ---------------------------------------------------------------------------
 838 // wxMenuBar searching for menu items
 839 // ---------------------------------------------------------------------------
 840
 841 // Find the itemString in menuString, and return the item id or wxNOT_FOUND
 842 int wxMenuBar::FindMenuItem(const wxString& menuString,
 843                             const wxString& itemString) const
 844 {
 845     wxString menuLabel = wxStripMenuCodes(menuString);
 846     size_t count = GetMenuCount();
 847     for ( size_t i = 0; i < count; i++ )
 848     {
 849         wxString title = wxStripMenuCodes(m_titles[i]);
 850         if ( menuString == title )
 851             return m_menus[i]->FindItem(itemString);
 852     }
 853
 854     return wxNOT_FOUND;
 855 }
 856
 857 wxMenuItem *wxMenuBar::FindItem(int id, wxMenu **itemMenu) const
 858 {
 859     if ( itemMenu )
 860         *itemMenu = NULL;
 861
 862     wxMenuItem *item = NULL;
 863     size_t count = GetMenuCount();
 864     for ( size_t i = 0; !item && (i < count); i++ )
 865     {
 866         item = m_menus[i]->FindItem(id, itemMenu);
 867     }
 868
 869     return item;
 870 }
 871