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, wxWindow)
  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(wxT("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(wxT("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     if ( item->IsSubMenu() )
 139     {
 140         wxMenu *submenu = item->GetSubMenu();
 141         wxMenuItemList::Node *node = submenu->GetMenuItems().GetFirst();
 142         while ( node )
 143         {
 144             UpdateAccel(node->GetData());
 145
 146             node = node->GetNext();
 147         }
 148     }
 149     else if ( !item->IsSeparator() )
 150     {
 151         // find the (new) accel for this item
 152         wxAcceleratorEntry *accel = wxGetAccelFromString(item->GetText());
 153         if ( accel )
 154             accel->m_command = item->GetId();
 155
 156         // find the old one
 157         int n = FindAccel(item->GetId());
 158         if ( n == wxNOT_FOUND )
 159         {
 160             // no old, add new if any
 161             if ( accel )
 162                 m_accels.Add(accel);
 163             else
 164                 return;     // skipping RebuildAccelTable() below
 165         }
 166         else
 167         {
 168             // replace old with new or just remove the old one if no new
 169             delete m_accels[n];
 170             if ( accel )
 171                 m_accels[n] = accel;
 172             else
 173                 m_accels.Remove(n);
 174         }
 175
 176         if ( IsAttached() )
 177         {
 178             m_menuBar->RebuildAccelTable();
 179         }
 180     }
 181     //else: it is a separator, they can't have accels, nothing to do
 182 }
 183
 184 #endif // wxUSE_ACCEL
 185
 186 // append a new item or submenu to the menu
 187 bool wxMenu::DoInsertOrAppend(wxMenuItem *pItem, size_t pos)
 188 {
 189 #if wxUSE_ACCEL
 190     UpdateAccel(pItem);
 191 #endif // wxUSE_ACCEL
 192
 193     UINT flags = 0;
 194
 195     // if "Break" has just been called, insert a menu break before this item
 196     // (and don't forget to reset the flag)
 197     if ( m_doBreak ) {
 198         flags |= MF_MENUBREAK;
 199         m_doBreak = FALSE;
 200     }
 201
 202     if ( pItem->IsSeparator() ) {
 203         flags |= MF_SEPARATOR;
 204     }
 205
 206     // id is the numeric id for normal menu items and HMENU for submenus as
 207     // required by ::AppendMenu() API
 208     UINT id;
 209     wxMenu *submenu = pItem->GetSubMenu();
 210     if ( submenu != NULL ) {
 211         wxASSERT_MSG( submenu->GetHMenu(), wxT("invalid submenu") );
 212
 213         submenu->SetParent(this);
 214
 215         id = (UINT)submenu->GetHMenu();
 216
 217         flags |= MF_POPUP;
 218     }
 219     else {
 220         id = pItem->GetId();
 221     }
 222
 223     LPCTSTR pData;
 224
 225 #if wxUSE_OWNER_DRAWN
 226     if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 227         // item draws itself, pass pointer to it in data parameter
 228         flags |= MF_OWNERDRAW;
 229         pData = (LPCTSTR)pItem;
 230     }
 231     else
 232 #endif
 233     {
 234         // menu is just a normal string (passed in data parameter)
 235         flags |= MF_STRING;
 236
 237         pData = (wxChar*)pItem->GetText().c_str();
 238     }
 239
 240     BOOL ok;
 241     if ( pos == (size_t)-1 )
 242     {
 243         ok = ::AppendMenu(GetHmenu(), flags, id, pData);
 244     }
 245     else
 246     {
 247         ok = ::InsertMenu(GetHmenu(), pos, flags | MF_BYPOSITION, id, pData);
 248     }
 249
 250     if ( !ok )
 251     {
 252         wxLogLastError(wxT("Insert or AppendMenu"));
 253
 254         return FALSE;
 255     }
 256     else
 257     {
 258         // if we just appended the title, highlight it
 259 #ifdef __WIN32__
 260         if ( (int)id == idMenuTitle )
 261         {
 262             // visually select the menu title
 263             MENUITEMINFO mii;
 264             mii.cbSize = sizeof(mii);
 265             mii.fMask = MIIM_STATE;
 266             mii.fState = MFS_DEFAULT;
 267
 268             if ( !SetMenuItemInfo(GetHmenu(), (unsigned)id, FALSE, &mii) )
 269             {
 270                 wxLogLastError(wxT("SetMenuItemInfo"));
 271             }
 272         }
 273 #endif // __WIN32__
 274
 275         // if we're already attached to the menubar, we must update it
 276         if ( IsAttached() )
 277         {
 278             m_menuBar->Refresh();
 279         }
 280
 281         return TRUE;
 282     }
 283 }
 284
 285 bool wxMenu::DoAppend(wxMenuItem *item)
 286 {
 287     return wxMenuBase::DoAppend(item) && DoInsertOrAppend(item);
 288 }
 289
 290 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
 291 {
 292     return wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos);
 293 }
 294
 295 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
 296 {
 297     // we need to find the items position in the child list
 298     size_t pos;
 299     wxMenuItemList::Node *node = GetMenuItems().GetFirst();
 300     for ( pos = 0; node; pos++ )
 301     {
 302         if ( node->GetData() == item )
 303             break;
 304
 305         node = node->GetNext();
 306     }
 307
 308     // DoRemove() (unlike Remove) can only be called for existing item!
 309     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 310
 311 #if wxUSE_ACCEL
 312     // remove the corresponding accel from the accel table
 313     int n = FindAccel(item->GetId());
 314     if ( n != wxNOT_FOUND )
 315     {
 316         delete m_accels[n];
 317
 318         m_accels.Remove(n);
 319     }
 320     //else: this item doesn't have an accel, nothing to do
 321 #endif // wxUSE_ACCEL
 322
 323     // remove the item from the menu
 324     if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 325     {
 326         wxLogLastError(wxT("RemoveMenu"));
 327     }
 328
 329     if ( IsAttached() )
 330     {
 331         // otherwise, the chane won't be visible
 332         m_menuBar->Refresh();
 333     }
 334
 335     // and from internal data structures
 336     return wxMenuBase::DoRemove(item);
 337 }
 338
 339 // ---------------------------------------------------------------------------
 340 // accelerator helpers
 341 // ---------------------------------------------------------------------------
 342
 343 #if wxUSE_ACCEL
 344
 345 // create the wxAcceleratorEntries for our accels and put them into provided
 346 // array - return the number of accels we have
 347 size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
 348 {
 349     size_t count = GetAccelCount();
 350     for ( size_t n = 0; n < count; n++ )
 351     {
 352         *accels++ = *m_accels[n];
 353     }
 354
 355     return count;
 356 }
 357
 358 #endif // wxUSE_ACCEL
 359
 360 // ---------------------------------------------------------------------------
 361 // set wxMenu title
 362 // ---------------------------------------------------------------------------
 363
 364 void wxMenu::SetTitle(const wxString& label)
 365 {
 366     bool hasNoTitle = m_title.IsEmpty();
 367     m_title = label;
 368
 369     HMENU hMenu = GetHmenu();
 370
 371     if ( hasNoTitle )
 372     {
 373         if ( !label.IsEmpty() )
 374         {
 375             if ( !::InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 376                                (unsigned)idMenuTitle, m_title) ||
 377                  !::InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 378             {
 379                 wxLogLastError(wxT("InsertMenu"));
 380             }
 381         }
 382     }
 383     else
 384     {
 385         if ( label.IsEmpty() )
 386         {
 387             // remove the title and the separator after it
 388             if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 389                  !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 390             {
 391                 wxLogLastError(wxT("RemoveMenu"));
 392             }
 393         }
 394         else
 395         {
 396             // modify the title
 397             if ( !ModifyMenu(hMenu, 0u,
 398                              MF_BYPOSITION | MF_STRING,
 399                              (unsigned)idMenuTitle, m_title) )
 400             {
 401                 wxLogLastError(wxT("ModifyMenu"));
 402             }
 403         }
 404     }
 405
 406 #ifdef __WIN32__
 407     // put the title string in bold face
 408     if ( !m_title.IsEmpty() )
 409     {
 410         MENUITEMINFO mii;
 411         mii.cbSize = sizeof(mii);
 412         mii.fMask = MIIM_STATE;
 413         mii.fState = MFS_DEFAULT;
 414
 415         if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 416         {
 417             wxLogLastError(wxT("SetMenuItemInfo"));
 418         }
 419     }
 420 #endif // Win32
 421 }
 422
 423 // ---------------------------------------------------------------------------
 424 // event processing
 425 // ---------------------------------------------------------------------------
 426
 427 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 428 {
 429     // ignore commands from the menu title
 430
 431     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 432     if ( id != (WXWORD)idMenuTitle )
 433     {
 434         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 435         event.SetEventObject( this );
 436         event.SetId( id );
 437
 438         // VZ: previosuly, the command int was set to id too which was quite
 439         //     useless anyhow (as it could be retrieved using GetId()) and
 440         //     uncompatible with wxGTK, so now we use the command int instead
 441         //     to pass the checked status
 442         event.SetInt(::GetMenuState(GetHmenu(), id, MF_BYCOMMAND) & MF_CHECKED);
 443
 444         ProcessCommand(event);
 445     }
 446
 447     return TRUE;
 448 }
 449
 450 bool wxMenu::ProcessCommand(wxCommandEvent & event)
 451 {
 452     bool processed = FALSE;
 453
 454 #if wxUSE_MENU_CALLBACK
 455     // Try a callback
 456     if (m_callback)
 457     {
 458         (void)(*(m_callback))(*this, event);
 459         processed = TRUE;
 460     }
 461 #endif // wxUSE_MENU_CALLBACK
 462
 463     // Try the menu's event handler
 464     if ( !processed && GetEventHandler())
 465     {
 466         processed = GetEventHandler()->ProcessEvent(event);
 467     }
 468
 469     // Try the window the menu was popped up from (and up through the
 470     // hierarchy)
 471     wxWindow *win = GetInvokingWindow();
 472     if ( !processed && win )
 473         processed = win->GetEventHandler()->ProcessEvent(event);
 474
 475     return processed;
 476 }
 477
 478 // ---------------------------------------------------------------------------
 479 // other
 480 // ---------------------------------------------------------------------------
 481
 482 void wxMenu::Attach(wxMenuBar *menubar)
 483 {
 484     // menu can be in at most one menubar because otherwise they would both
 485     // delete the menu pointer
 486     wxASSERT_MSG( !m_menuBar, wxT("menu belongs to 2 menubars, expect a crash") );
 487
 488     m_menuBar = menubar;
 489 }
 490
 491 void wxMenu::Detach()
 492 {
 493     wxASSERT_MSG( m_menuBar, wxT("can't detach menu if it's not attached") );
 494
 495     m_menuBar = NULL;
 496 }
 497
 498 wxWindow *wxMenu::GetWindow() const
 499 {
 500     if ( m_invokingWindow != NULL )
 501         return m_invokingWindow;
 502     else if ( m_menuBar != NULL)
 503         return m_menuBar->GetFrame();
 504
 505     return NULL;
 506 }
 507
 508 // ---------------------------------------------------------------------------
 509 // Menu Bar
 510 // ---------------------------------------------------------------------------
 511
 512 void wxMenuBar::Init()
 513 {
 514     m_eventHandler = this;
 515     m_menuBarFrame = NULL;
 516     m_hMenu = 0;
 517 }
 518
 519 wxMenuBar::wxMenuBar()
 520 {
 521     Init();
 522 }
 523
 524 wxMenuBar::wxMenuBar( long WXUNUSED(style) )
 525 {
 526     Init();
 527 }
 528
 529 wxMenuBar::wxMenuBar(int count, wxMenu *menus[], const wxString titles[])
 530 {
 531     Init();
 532
 533     m_titles.Alloc(count);
 534
 535     for ( int i = 0; i < count; i++ )
 536     {
 537         m_menus.Append(menus[i]);
 538         m_titles.Add(titles[i]);
 539
 540         menus[i]->Attach(this);
 541     }
 542 }
 543
 544 wxMenuBar::~wxMenuBar()
 545 {
 546 }
 547
 548 // ---------------------------------------------------------------------------
 549 // wxMenuBar helpers
 550 // ---------------------------------------------------------------------------
 551
 552 void wxMenuBar::Refresh()
 553 {
 554     wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );
 555
 556     DrawMenuBar(GetHwndOf(m_menuBarFrame));
 557 }
 558
 559 WXHMENU wxMenuBar::Create()
 560 {
 561     if ( m_hMenu != 0 )
 562         return m_hMenu;
 563
 564     m_hMenu = (WXHMENU)::CreateMenu();
 565
 566     if ( !m_hMenu )
 567     {
 568         wxLogLastError(wxT("CreateMenu"));
 569     }
 570     else
 571     {
 572         size_t count = GetMenuCount();
 573         for ( size_t i = 0; i < count; i++ )
 574         {
 575             if ( !::AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING,
 576                                (UINT)m_menus[i]->GetHMenu(),
 577                                m_titles[i]) )
 578             {
 579                 wxLogLastError(wxT("AppendMenu"));
 580             }
 581         }
 582     }
 583
 584     return m_hMenu;
 585 }
 586
 587 // ---------------------------------------------------------------------------
 588 // wxMenuBar functions to work with the top level submenus
 589 // ---------------------------------------------------------------------------
 590
 591 // NB: we don't support owner drawn top level items for now, if we do these
 592 //     functions would have to be changed to use wxMenuItem as well
 593
 594 void wxMenuBar::EnableTop(size_t pos, bool enable)
 595 {
 596     wxCHECK_RET( IsAttached(), wxT("doesn't work with unattached menubars") );
 597
 598     int flag = enable ? MF_ENABLED : MF_GRAYED;
 599
 600     EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | flag);
 601
 602     Refresh();
 603 }
 604
 605 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
 606 {
 607     wxCHECK_RET( pos < GetMenuCount(), wxT("invalid menu index") );
 608
 609     m_titles[pos] = label;
 610
 611     if ( !IsAttached() )
 612     {
 613         return;
 614     }
 615     //else: have to modify the existing menu
 616
 617     UINT id;
 618     UINT flagsOld = ::GetMenuState((HMENU)m_hMenu, pos, MF_BYPOSITION);
 619     if ( flagsOld == 0xFFFFFFFF )
 620     {
 621         wxLogLastError(wxT("GetMenuState"));
 622
 623         return;
 624     }
 625
 626     if ( flagsOld & MF_POPUP )
 627     {
 628         // HIBYTE contains the number of items in the submenu in this case
 629         flagsOld &= 0xff;
 630         id = (UINT)::GetSubMenu((HMENU)m_hMenu, pos);
 631     }
 632     else
 633     {
 634         id = pos;
 635     }
 636
 637     if ( ::ModifyMenu(GetHmenu(), pos, MF_BYPOSITION | MF_STRING | flagsOld,
 638                       id, label) == (int)0xFFFFFFFF )
 639     {
 640         wxLogLastError(wxT("ModifyMenu"));
 641     }
 642
 643     Refresh();
 644 }
 645
 646 wxString wxMenuBar::GetLabelTop(size_t pos) const
 647 {
 648     wxCHECK_MSG( pos < GetMenuCount(), wxEmptyString,
 649                  wxT("invalid menu index in wxMenuBar::GetLabelTop") );
 650
 651     return m_titles[pos];
 652 }
 653
 654 // ---------------------------------------------------------------------------
 655 // wxMenuBar construction
 656 // ---------------------------------------------------------------------------
 657
 658 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
 659 {
 660     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
 661     if ( !menuOld )
 662         return FALSE;
 663     m_titles[pos] = title;
 664
 665     if ( IsAttached() )
 666     {
 667         // can't use ModifyMenu() because it deletes the submenu it replaces
 668         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 669         {
 670             wxLogLastError(wxT("RemoveMenu"));
 671         }
 672
 673         if ( !::InsertMenu(GetHmenu(), (UINT)pos,
 674                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 675                            (UINT)GetHmenuOf(menu), title) )
 676         {
 677             wxLogLastError(wxT("InsertMenu"));
 678         }
 679
 680 #if wxUSE_ACCEL
 681         if ( menuOld->HasAccels() || menu->HasAccels() )
 682         {
 683             // need to rebuild accell table
 684             RebuildAccelTable();
 685         }
 686 #endif // wxUSE_ACCEL
 687
 688         Refresh();
 689     }
 690
 691     return menuOld;
 692 }
 693
 694 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
 695 {
 696     if ( !wxMenuBarBase::Insert(pos, menu, title) )
 697         return FALSE;
 698
 699     m_titles.Insert(title, pos);
 700
 701     menu->Attach(this);
 702
 703     if ( IsAttached() )
 704     {
 705         if ( !::InsertMenu(GetHmenu(), pos,
 706                            MF_BYPOSITION | MF_POPUP | MF_STRING,
 707                            (UINT)GetHmenuOf(menu), title) )
 708         {
 709             wxLogLastError(wxT("InsertMenu"));
 710         }
 711
 712 #if wxUSE_ACCEL
 713         if ( menu->HasAccels() )
 714         {
 715             // need to rebuild accell table
 716             RebuildAccelTable();
 717         }
 718 #endif // wxUSE_ACCEL
 719
 720         Refresh();
 721     }
 722
 723     return TRUE;
 724 }
 725
 726 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
 727 {
 728     WXHMENU submenu = menu ? menu->GetHMenu() : 0;
 729     wxCHECK_MSG( submenu, FALSE, wxT("can't append invalid menu to menubar") );
 730
 731     if ( !wxMenuBarBase::Append(menu, title) )
 732         return FALSE;
 733
 734     menu->Attach(this);
 735
 736     m_titles.Add(title);
 737
 738     if ( IsAttached() )
 739     {
 740         if ( !::AppendMenu(GetHmenu(), MF_POPUP | MF_STRING,
 741                            (UINT)submenu, title) )
 742         {
 743             wxLogLastError(wxT("AppendMenu"));
 744         }
 745
 746 #if wxUSE_ACCEL
 747         if ( menu->HasAccels() )
 748         {
 749             // need to rebuild accell table
 750             RebuildAccelTable();
 751         }
 752 #endif // wxUSE_ACCEL
 753
 754         Refresh();
 755     }
 756
 757     return TRUE;
 758 }
 759
 760 wxMenu *wxMenuBar::Remove(size_t pos)
 761 {
 762     wxMenu *menu = wxMenuBarBase::Remove(pos);
 763     if ( !menu )
 764         return NULL;
 765
 766     if ( IsAttached() )
 767     {
 768         if ( !::RemoveMenu(GetHmenu(), (UINT)pos, MF_BYPOSITION) )
 769         {
 770             wxLogLastError(wxT("RemoveMenu"));
 771         }
 772
 773         menu->Detach();
 774
 775 #if wxUSE_ACCEL
 776         if ( menu->HasAccels() )
 777         {
 778             // need to rebuild accell table
 779             RebuildAccelTable();
 780         }
 781 #endif // wxUSE_ACCEL
 782
 783         Refresh();
 784     }
 785
 786     m_titles.Remove(pos);
 787
 788     return menu;
 789 }
 790
 791 #if wxUSE_ACCEL
 792
 793 void wxMenuBar::RebuildAccelTable()
 794 {
 795     // merge the accelerators of all menus into one accel table
 796     size_t nAccelCount = 0;
 797     size_t i, count = GetMenuCount();
 798     for ( i = 0; i < count; i++ )
 799     {
 800         nAccelCount += m_menus[i]->GetAccelCount();
 801     }
 802
 803     if ( nAccelCount )
 804     {
 805         wxAcceleratorEntry *accelEntries = new wxAcceleratorEntry[nAccelCount];
 806
 807         nAccelCount = 0;
 808         for ( i = 0; i < count; i++ )
 809         {
 810             nAccelCount += m_menus[i]->CopyAccels(&accelEntries[nAccelCount]);
 811         }
 812
 813         m_accelTable = wxAcceleratorTable(nAccelCount, accelEntries);
 814
 815         delete [] accelEntries;
 816     }
 817 }
 818
 819 #endif // wxUSE_ACCEL
 820
 821 void wxMenuBar::Attach(wxFrame *frame)
 822 {
 823 //    wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 824
 825     m_menuBarFrame = frame;
 826
 827 #if wxUSE_ACCEL
 828     RebuildAccelTable();
 829 #endif // wxUSE_ACCEL
 830 }
 831
 832 void wxMenuBar::Detach()
 833 {
 834 //    ::DestroyMenu((HMENU)m_hMenu);
 835     m_hMenu = (WXHMENU)NULL;
 836     m_menuBarFrame = NULL;
 837 }
 838
 839
 840 // ---------------------------------------------------------------------------
 841 // wxMenuBar searching for menu items
 842 // ---------------------------------------------------------------------------
 843
 844 // Find the itemString in menuString, and return the item id or wxNOT_FOUND
 845 int wxMenuBar::FindMenuItem(const wxString& menuString,
 846                             const wxString& itemString) const
 847 {
 848     wxString menuLabel = wxStripMenuCodes(menuString);
 849     size_t count = GetMenuCount();
 850     for ( size_t i = 0; i < count; i++ )
 851     {
 852         wxString title = wxStripMenuCodes(m_titles[i]);
 853         if ( menuLabel == title )
 854             return m_menus[i]->FindItem(itemString);
 855     }
 856
 857     return wxNOT_FOUND;
 858 }
 859
 860 wxMenuItem *wxMenuBar::FindItem(int id, wxMenu **itemMenu) const
 861 {
 862     if ( itemMenu )
 863         *itemMenu = NULL;
 864
 865     wxMenuItem *item = NULL;
 866     size_t count = GetMenuCount();
 867     for ( size_t i = 0; !item && (i < count); i++ )
 868     {
 869         item = m_menus[i]->FindItem(id, itemMenu);
 870     }
 871
 872     return item;
 873 }
 874