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 #ifdef __GNUG__
  13 #pragma implementation "menu.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/frame.h"
  25 #include "wx/menu.h"
  26 #include "wx/utils.h"
  27 #endif
  28
  29 #if wxUSE_OWNER_DRAWN
  30   #include "wx/ownerdrw.h"
  31 #endif
  32
  33 #include "wx/msw/private.h"
  34 #include "wx/msw/menu.h"
  35 #include "wx/menuitem.h"
  36 #include "wx/log.h"
  37
  38 // other standard headers
  39 // ----------------------
  40 #include <string.h>
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 // the (popup) menu title has this special id
  47 static const int idMenuTitle = -2;
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWindows macros
  51 // ----------------------------------------------------------------------------
  52 #if !USE_SHARED_LIBRARY
  53   IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  54   IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
  55 #endif
  56
  57 // ============================================================================
  58 // implementation
  59 // ============================================================================
  60
  61 // Menus
  62
  63 // Construct a menu with optional title (then use append)
  64 wxMenu::wxMenu(const wxString& Title, const wxFunction func)
  65 {
  66   m_title = Title;
  67   m_parent = NULL;
  68   m_eventHandler = this;
  69   m_pInvokingWindow = NULL;
  70   m_doBreak = FALSE ;
  71   m_noItems = 0;
  72   m_menuBar = NULL;
  73   m_hMenu = (WXHMENU) CreatePopupMenu();
  74   m_savehMenu = 0 ;
  75   m_topLevelMenu = this;
  76   m_clientData = (void*) NULL;
  77
  78   if (m_title != "")
  79   {
  80     Append(idMenuTitle, m_title) ;
  81     AppendSeparator() ;
  82   }
  83
  84   Callback(func);
  85 }
  86
  87 // The wxWindow destructor will take care of deleting the submenus.
  88 wxMenu::~wxMenu()
  89 {
  90   if (m_hMenu)
  91     DestroyMenu((HMENU) m_hMenu);
  92   m_hMenu = 0;
  93
  94   // Windows seems really bad on Menu de-allocation...
  95   // After many try, here is what I do: RemoveMenu() will ensure
  96   // that popup are "disconnected" from their parent; then call
  97   // delete method on each child (which in turn do a recursive job),
  98   // and finally, DestroyMenu()
  99   //
 100   // With that, BoundCheckers is happy, and no complaints...
 101 /*
 102   int N = 0 ;
 103   if (m_hMenu)
 104     N = GetMenuItemCount(m_hMenu);
 105   int i;
 106   for (i = N-1; i >= 0; i--)
 107     RemoveMenu(m_hMenu, i, MF_BYPOSITION);
 108 */
 109
 110   // How is deleting submenus in this loop any different from deleting
 111   // the submenus in the children list, via ~wxWindow ?
 112   // I'll reinstate this deletion for now and remove addition
 113   // from children list (which doesn't exist now)
 114   // Julian 1/3/97
 115   wxNode *node = m_menuItems.First();
 116   while (node)
 117   {
 118     wxMenuItem *item = (wxMenuItem *)node->Data();
 119
 120     // Delete child menus.
 121     // Beware: they must not be appended to children list!!!
 122     // (because order of delete is significant)
 123     if (item->GetSubMenu())
 124       item->DeleteSubMenu();
 125
 126     wxNode *next = node->Next();
 127     delete item;
 128     delete node;
 129     node = next;
 130   }
 131 /*
 132   if (m_hMenu)
 133     DestroyMenu(m_hMenu);
 134   m_hMenu = 0;
 135 */
 136 }
 137
 138 void wxMenu::Break()
 139 {
 140   m_doBreak = TRUE ;
 141 }
 142
 143 // function appends a new item or submenu to the menu
 144 void wxMenu::Append(wxMenuItem *pItem)
 145 {
 146   wxCHECK_RET( pItem != NULL, "can't append NULL item to the menu" );
 147
 148   m_menuItems.Append(pItem);
 149
 150   UINT  flags = 0;
 151
 152   if ( m_doBreak ) {
 153     flags |= MF_MENUBREAK;
 154     m_doBreak = FALSE;
 155   }
 156
 157   if ( pItem->IsSeparator() ) {
 158     flags |= MF_SEPARATOR;
 159   }
 160
 161   // id is the numeric id for normal menu items and HMENU for submenus
 162   UINT id;
 163   wxMenu *SubMenu = pItem->GetSubMenu();
 164   if ( SubMenu != NULL ) {
 165     wxASSERT( SubMenu->m_hMenu != (WXHMENU) NULL );
 166
 167     id = (UINT)SubMenu->m_hMenu;
 168
 169     SubMenu->m_topLevelMenu = m_topLevelMenu;
 170     SubMenu->m_parent       = this;
 171     SubMenu->m_savehMenu    = (WXHMENU)id;
 172     SubMenu->m_hMenu        = 0;
 173
 174     flags |= MF_POPUP;
 175   }
 176   else {
 177     id = pItem->GetId();
 178   }
 179
 180   LPCSTR pData;
 181
 182 #if wxUSE_OWNER_DRAWN
 183   if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 184     // item draws itself, pass pointer to it in data parameter
 185     flags |= MF_OWNERDRAW;
 186     pData = (LPCSTR)pItem;
 187   }
 188   else
 189 #endif
 190   {
 191     // menu is just a normal string (passed in data parameter)
 192     flags |= MF_STRING;
 193     pData = pItem->GetName();
 194   }
 195
 196   // visually select the menu title
 197   if ( id == idMenuTitle )
 198   {
 199     // TODO use SetMenuItemInfo(MFS_DEFAULT) to put it in bold face
 200   }
 201
 202   HMENU hMenu = (HMENU)((m_hMenu == 0) ? m_savehMenu : m_hMenu);
 203   if ( !AppendMenu(hMenu, flags, id, pData) )
 204   {
 205     wxLogLastError("AppendMenu");
 206   }
 207
 208   m_noItems++;
 209 }
 210
 211 void wxMenu::AppendSeparator()
 212 {
 213   Append(new wxMenuItem(this, ID_SEPARATOR));
 214 }
 215
 216 // Pullright item
 217 void wxMenu::Append(int Id, const wxString& label, wxMenu *SubMenu,
 218                     const wxString& helpString)
 219 {
 220   Append(new wxMenuItem(this, Id, label, helpString, FALSE, SubMenu));
 221 }
 222
 223 // Ordinary menu item
 224 void wxMenu::Append(int Id, const wxString& label,
 225                     const wxString& helpString, bool checkable)
 226 {
 227   // 'checkable' parameter is useless for Windows.
 228   Append(new wxMenuItem(this, Id, label, helpString, checkable));
 229 }
 230
 231 void wxMenu::Delete(int id)
 232 {
 233   wxNode *node;
 234   int pos;
 235   HMENU menu;
 236
 237   wxMenuItem *item = NULL;
 238   for (pos = 0, node = m_menuItems.First(); node; node = node->Next(), pos++) {
 239          item = (wxMenuItem *)node->Data();
 240          if (item->GetId() == id)
 241                 break;
 242   }
 243
 244   if (!node)
 245         return;
 246
 247   menu = (HMENU)(m_hMenu ? m_hMenu : m_savehMenu);
 248
 249   wxMenu *pSubMenu = item->GetSubMenu();
 250   if ( pSubMenu != NULL ) {
 251     RemoveMenu(menu, (UINT)pos, MF_BYPOSITION);
 252     pSubMenu->m_hMenu = pSubMenu->m_savehMenu;
 253     pSubMenu->m_savehMenu = 0;
 254     pSubMenu->m_parent = NULL;
 255     //     RemoveChild(item->subMenu);
 256     pSubMenu->m_topLevelMenu = NULL;
 257     // TODO: Why isn't subMenu deleted here???
 258     // Will put this in for now. Assuming this is supposed
 259     // to delete the menu, not just remove it.
 260     item->DeleteSubMenu();
 261   }
 262   else {
 263     DeleteMenu(menu, (UINT)pos, MF_BYPOSITION);
 264   }
 265
 266   m_menuItems.DeleteNode(node);
 267   delete item;
 268 }
 269
 270 void wxMenu::Enable(int Id, bool Flag)
 271 {
 272   wxMenuItem *item = FindItemForId(Id);
 273   wxCHECK_RET( item != NULL, "can't enable non-existing menu item" );
 274
 275   item->Enable(Flag);
 276 }
 277
 278 bool wxMenu::Enabled(int Id) const
 279 {
 280   wxMenuItem *item = FindItemForId(Id);
 281   wxCHECK( item != NULL, FALSE );
 282
 283   return item->IsEnabled();
 284 }
 285
 286 void wxMenu::Check(int Id, bool Flag)
 287 {
 288   wxMenuItem *item = FindItemForId(Id);
 289   wxCHECK_RET( item != NULL, "can't get status of non-existing menu item" );
 290
 291   item->Check(Flag);
 292 }
 293
 294 bool wxMenu::Checked(int Id) const
 295 {
 296   wxMenuItem *item = FindItemForId(Id);
 297   wxCHECK( item != NULL, FALSE );
 298
 299   return item->IsChecked();
 300 }
 301
 302 void wxMenu::SetTitle(const wxString& label)
 303 {
 304   bool hasNoTitle = m_title.IsEmpty();
 305   m_title = label;
 306
 307   HMENU hMenu = (HMENU)((m_hMenu == 0) ? m_savehMenu : m_hMenu);
 308
 309   if ( hasNoTitle )
 310   {
 311     if ( !label.IsEmpty() )
 312     {
 313       if ( !InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 314                        (unsigned)idMenuTitle, m_title) ||
 315            !InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 316       {
 317         wxLogLastError("InsertMenu");
 318       }
 319     }
 320   }
 321   else
 322   {
 323     if ( label.IsEmpty() )
 324     {
 325       // remove the title and the separator after it
 326       if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 327            !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 328       {
 329         wxLogLastError("RemoveMenu");
 330       }
 331     }
 332     else
 333     {
 334       // modify the title
 335       if ( !ModifyMenu(hMenu, 0u,
 336                        MF_BYPOSITION | MF_STRING,
 337                        (unsigned)idMenuTitle, m_title) )
 338       {
 339         wxLogLastError("ModifyMenu");
 340       }
 341     }
 342   }
 343
 344 #ifndef __WIN16__
 345   // put the title string in bold face
 346   if ( !m_title.IsEmpty() )
 347   {
 348     MENUITEMINFO mii;
 349     mii.cbSize = sizeof(mii);
 350     mii.fMask = MIIM_STATE;
 351     mii.fState = MFS_DEFAULT;
 352
 353     if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 354     {
 355       wxLogLastError("SetMenuItemInfo");
 356     }
 357   }
 358 #endif
 359 }
 360
 361 const wxString wxMenu::GetTitle() const
 362 {
 363    return m_title;
 364 }
 365
 366 void wxMenu::SetLabel(int Id, const wxString& label)
 367 {
 368   wxMenuItem *item = FindItemForId(Id) ;
 369   if (item==NULL)
 370     return;
 371
 372   if (item->GetSubMenu()==NULL)
 373   {
 374     if (m_hMenu)
 375     {
 376       UINT was_flag = GetMenuState((HMENU)m_hMenu,Id,MF_BYCOMMAND) ;
 377       ModifyMenu((HMENU)m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 378     }
 379     else if (m_savehMenu)
 380     {
 381       UINT was_flag = GetMenuState((HMENU)m_savehMenu,Id,MF_BYCOMMAND) ;
 382       ModifyMenu((HMENU)m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 383     }
 384   }
 385   else
 386   {
 387     wxMenu *father = item->GetSubMenu()->m_topLevelMenu ;
 388     wxNode *node = father->m_menuItems.First() ;
 389     int i = 0 ;
 390     while (node)
 391     {
 392       wxMenuItem *matched = (wxMenuItem*)node->Data() ;
 393       if (matched==item)
 394         break ;
 395       i++ ;
 396       node = node->Next() ;
 397     }
 398     // Here, we have the position.
 399     ModifyMenu((HMENU)father->m_savehMenu,i,
 400                MF_BYPOSITION|MF_STRING|MF_POPUP,
 401                (UINT)item->GetSubMenu()->m_savehMenu,(const char *)label) ;
 402   }
 403   item->SetName(label);
 404 }
 405
 406 wxString wxMenu::GetLabel(int id) const
 407 {
 408 /*
 409   static char tmp[128] ;
 410   int len;
 411   if (m_hMenu)
 412     len = GetMenuString((HMENU)m_hMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 413   else if (m_savehMenu)
 414     len = GetMenuString((HMENU)m_savehMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 415   else
 416     len = 0 ;
 417   tmp[len] = '\0' ;
 418   return wxString(tmp) ;
 419
 420 */
 421     wxMenuItem *pItem = FindItemForId(id) ;
 422     if (pItem)
 423         return pItem->GetName() ;
 424     else
 425         return wxEmptyString;
 426 }
 427
 428 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 429 {
 430     // ignore commands from the menu title
 431
 432     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 433     if ( id != (WXWORD)idMenuTitle )
 434     {
 435         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 436         event.SetEventObject( this );
 437         event.SetId( id );
 438         event.SetInt( id );
 439         ProcessCommand(event);
 440     }
 441
 442     return TRUE;
 443 }
 444
 445 // Finds the item id matching the given string, -1 if not found.
 446 int wxMenu::FindItem (const wxString& itemString) const
 447 {
 448   char buf1[200];
 449   char buf2[200];
 450   wxStripMenuCodes ((char *)(const char *)itemString, buf1);
 451
 452   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 453     {
 454       wxMenuItem *item = (wxMenuItem *) node->Data ();
 455       if (item->GetSubMenu())
 456       {
 457         int ans = item->GetSubMenu()->FindItem(itemString);
 458         if (ans > -1)
 459           return ans;
 460       }
 461       if ( !item->IsSeparator() )
 462       {
 463         wxStripMenuCodes((char *)item->GetName().c_str(), buf2);
 464         if (strcmp(buf1, buf2) == 0)
 465           return item->GetId();
 466       }
 467     }
 468
 469   return -1;
 470 }
 471
 472 wxMenuItem *wxMenu::FindItemForId(int itemId, wxMenu ** itemMenu) const
 473 {
 474   if (itemMenu)
 475     *itemMenu = NULL;
 476   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 477   {
 478     wxMenuItem *item = (wxMenuItem *) node->Data ();
 479
 480     if (item->GetId() == itemId)
 481     {
 482       if (itemMenu)
 483         *itemMenu = (wxMenu *) this;
 484       return item;
 485     }
 486
 487     if (item->GetSubMenu())
 488     {
 489       wxMenuItem *ans = item->GetSubMenu()->FindItemForId (itemId, itemMenu);
 490       if (ans)
 491         return ans;
 492     }
 493   }
 494
 495   if (itemMenu)
 496     *itemMenu = NULL;
 497   return NULL;
 498 }
 499
 500 void wxMenu::SetHelpString(int itemId, const wxString& helpString)
 501 {
 502   wxMenuItem *item = FindItemForId (itemId);
 503   if (item)
 504     item->SetHelp(helpString);
 505 }
 506
 507 wxString wxMenu::GetHelpString (int itemId) const
 508 {
 509   wxMenuItem *item = FindItemForId (itemId);
 510   if (item)
 511     return item->GetHelp();
 512   else
 513     return wxEmptyString;
 514 }
 515
 516 void wxMenu::ProcessCommand(wxCommandEvent & event)
 517 {
 518   bool processed = FALSE;
 519
 520   // Try a callback
 521   if (m_callback)
 522   {
 523       (void)(*(m_callback))(*this, event);
 524       processed = TRUE;
 525   }
 526
 527   // Try the menu's event handler
 528   if ( !processed && GetEventHandler())
 529   {
 530       processed = GetEventHandler()->ProcessEvent(event);
 531   }
 532
 533   // Try the window the menu was popped up from (and up
 534   // through the hierarchy)
 535   if ( !processed && GetInvokingWindow())
 536     processed = GetInvokingWindow()->GetEventHandler()->ProcessEvent(event);
 537 }
 538
 539 extern wxMenu *wxCurrentPopupMenu;
 540 bool wxWindow::PopupMenu(wxMenu *menu, int x, int y)
 541 {
 542   menu->SetInvokingWindow(this);
 543   menu->UpdateUI();
 544
 545   HWND hWnd = (HWND) GetHWND();
 546   HMENU hMenu = (HMENU)menu->m_hMenu;
 547   POINT point;
 548   point.x = x;
 549   point.y = y;
 550   ::ClientToScreen(hWnd, &point);
 551   wxCurrentPopupMenu = menu;
 552   ::TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, point.x, point.y, 0, hWnd, NULL);
 553   wxYield();
 554   wxCurrentPopupMenu = NULL;
 555
 556   menu->SetInvokingWindow(NULL);
 557
 558   return TRUE;
 559 }
 560
 561 // Menu Bar
 562 wxMenuBar::wxMenuBar()
 563 {
 564   m_eventHandler = this;
 565
 566   m_menuCount = 0;
 567   m_menus = NULL;
 568   m_titles = NULL;
 569   m_menuBarFrame = NULL;
 570   m_hMenu = 0;
 571 }
 572
 573 wxMenuBar::wxMenuBar(int N, wxMenu *Menus[], const wxString Titles[])
 574 {
 575   m_eventHandler = this;
 576   m_menuCount = N;
 577   m_menus = Menus;
 578   m_titles = new wxString[N];
 579   int i;
 580   for ( i = 0; i < N; i++ )
 581         m_titles[i] = Titles[i];
 582   m_menuBarFrame = NULL;
 583   for (i = 0; i < N; i++)
 584     m_menus[i]->m_menuBar = (wxMenuBar *) this;
 585
 586   m_hMenu = 0;
 587 }
 588
 589 wxMenuBar::~wxMenuBar()
 590 {
 591   // In fact, don't want menu to be destroyed before MDI
 592   // shuffling has taken place. Let it be destroyed
 593   // automatically when the window is destroyed.
 594
 595 //  DestroyMenu(menu);
 596 //  m_hMenu = NULL;
 597
 598   int i;
 599 /*
 600   // See remarks in ::~wxMenu() method
 601   // BEWARE - this may interfere with MDI fixes, so
 602   // may need to remove
 603   int N = 0 ;
 604
 605   if (m_menuBarFrame && ((m_menuBarFrame->GetWindowStyleFlag() & wxSDI) == wxSDI))
 606   {
 607     if (menu)
 608       N = GetMenuItemCount(menu) ;
 609     for (i = N-1; i >= 0; i--)
 610       RemoveMenu(menu, i, MF_BYPOSITION);
 611   }
 612 */
 613   for (i = 0; i < m_menuCount; i++)
 614   {
 615     delete m_menus[i];
 616   }
 617   delete[] m_menus;
 618   delete[] m_titles;
 619
 620 /* Don't destroy menu here, in case we're MDI and
 621    need to do some shuffling with VALID menu handles.
 622   if (menu)
 623     DestroyMenu(menu);
 624   m_hMenu = 0;
 625 */
 626 }
 627
 628 // Must only be used AFTER menu has been attached to frame,
 629 // otherwise use individual menus to enable/disable items
 630 void wxMenuBar::Enable(int Id, bool Flag)
 631 {
 632   int ms_flag;
 633   if (Flag)
 634     ms_flag = MF_ENABLED;
 635   else
 636     ms_flag = MF_GRAYED;
 637
 638   wxMenu *itemMenu = NULL;
 639   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 640   if (!item)
 641     return;
 642
 643   if (itemMenu->m_hMenu)
 644     EnableMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 645   else if (itemMenu->m_savehMenu)
 646     EnableMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 647
 648 }
 649
 650 void wxMenuBar::EnableTop(int pos, bool flag)
 651 {
 652   int ms_flag;
 653   if (flag)
 654     ms_flag = MF_ENABLED;
 655   else
 656     ms_flag = MF_GRAYED;
 657
 658   EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | ms_flag);
 659   DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 660 }
 661
 662 // Must only be used AFTER menu has been attached to frame,
 663 // otherwise use individual menus
 664 void wxMenuBar::Check(int Id, bool Flag)
 665 {
 666   wxMenu *itemMenu = NULL;
 667   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 668   if (!item)
 669     return;
 670
 671   if (!item->IsCheckable())
 672     return ;
 673   int ms_flag;
 674   if (Flag)
 675     ms_flag = MF_CHECKED;
 676   else
 677     ms_flag = MF_UNCHECKED;
 678
 679   if (itemMenu->m_hMenu)
 680     CheckMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 681   else if (itemMenu->m_savehMenu)
 682     CheckMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 683
 684 //  CheckMenuItem((HMENU)m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 685 }
 686
 687 bool wxMenuBar::Checked(int Id) const
 688 {
 689   wxMenu *itemMenu = NULL;
 690   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 691   if (!item)
 692     return FALSE;
 693
 694   int Flag = 0;
 695
 696   if (itemMenu->m_hMenu)
 697     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 698   else if (itemMenu->m_savehMenu)
 699     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 700
 701 //  Flag=GetMenuState((HMENU)m_hMenu, Id, MF_BYCOMMAND) ;
 702
 703   if (Flag&MF_CHECKED)
 704     return TRUE ;
 705   else
 706     return FALSE ;
 707 }
 708
 709 bool wxMenuBar::Enabled(int Id) const
 710 {
 711   wxMenu *itemMenu = NULL;
 712   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 713   if (!item)
 714     return FALSE;
 715
 716   int Flag ;
 717
 718   if (itemMenu->m_hMenu)
 719     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 720   else if (itemMenu->m_savehMenu)
 721     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 722
 723   if (Flag&MF_ENABLED)
 724     return TRUE ;
 725   else
 726     return FALSE ;
 727 }
 728
 729
 730 void wxMenuBar::SetLabel(int Id, const wxString& label)
 731 {
 732   wxMenu *itemMenu = NULL;
 733   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 734
 735   if (!item)
 736     return;
 737
 738   if (itemMenu->m_hMenu)
 739   {
 740     UINT was_flag = GetMenuState((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND) ;
 741     ModifyMenu((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 742   }
 743   else if (itemMenu->m_savehMenu)
 744   {
 745     UINT was_flag = GetMenuState((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND) ;
 746     ModifyMenu((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 747   }
 748 }
 749
 750 wxString wxMenuBar::GetLabel(int Id) const
 751 {
 752   wxMenu *itemMenu = NULL;
 753   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 754
 755   if (!item)
 756     return wxString("");
 757
 758   static char tmp[128] ;
 759   int len = 0;
 760   if (itemMenu->m_hMenu)
 761   {
 762     len = GetMenuString((HMENU)itemMenu->m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 763   }
 764   else if (itemMenu->m_savehMenu)
 765   {
 766     len = GetMenuString((HMENU)itemMenu->m_savehMenu,Id,tmp,127,MF_BYCOMMAND) ;
 767   }
 768
 769 //  int len = GetMenuString((HMENU)m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 770   tmp[len] = '\0' ;
 771   return wxString(tmp) ;
 772 }
 773
 774 void wxMenuBar::SetLabelTop(int pos, const wxString& label)
 775 {
 776   UINT was_flag = GetMenuState((HMENU)m_hMenu,pos,MF_BYPOSITION) ;
 777   if (was_flag&MF_POPUP)
 778   {
 779     was_flag &= 0xff ;
 780     HMENU popup = GetSubMenu((HMENU)m_hMenu,pos) ;
 781     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,(UINT)popup,(const char *)label) ;
 782   }
 783   else
 784     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,pos,(const char *)label) ;
 785 }
 786
 787 wxString wxMenuBar::GetLabelTop(int pos) const
 788 {
 789   static char tmp[128] ;
 790   int len = GetMenuString((HMENU)m_hMenu,pos,tmp,127,MF_BYPOSITION) ;
 791   tmp[len] = '\0' ;
 792   return wxString(tmp);
 793 }
 794
 795 bool wxMenuBar::OnDelete(wxMenu *a_menu, int pos)
 796 {
 797   if (!m_menuBarFrame)
 798          return TRUE;
 799
 800   if (RemoveMenu((HMENU)m_hMenu, (UINT)pos, MF_BYPOSITION)) {
 801          m_menus[pos]->m_hMenu = m_menus[pos]->m_savehMenu;
 802          m_menus[pos]->m_savehMenu = 0;
 803
 804          if (m_menuBarFrame) {
 805                 DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 806          }
 807
 808          return TRUE;
 809   }
 810
 811   return FALSE;
 812 }
 813
 814 bool wxMenuBar::OnAppend(wxMenu *a_menu, const char *title)
 815 {
 816   if (!a_menu->m_hMenu)
 817          return FALSE;
 818
 819   if (!m_menuBarFrame)
 820          return TRUE;
 821
 822   a_menu->m_savehMenu = a_menu->m_hMenu;
 823   a_menu->m_hMenu = 0;
 824
 825   AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING, (UINT)a_menu->m_savehMenu, title);
 826
 827   DrawMenuBar((HWND) m_menuBarFrame->GetHWND());
 828
 829   return TRUE;
 830 }
 831
 832 void wxMenuBar::Append (wxMenu * menu, const wxString& title)
 833 {
 834   if (!OnAppend(menu, title))
 835          return;
 836
 837   m_menuCount ++;
 838   wxMenu **new_menus = new wxMenu *[m_menuCount];
 839   wxString *new_titles = new wxString[m_menuCount];
 840   int i;
 841
 842   for (i = 0; i < m_menuCount - 1; i++)
 843          {
 844                 new_menus[i] = m_menus[i];
 845                 m_menus[i] = NULL;
 846                 new_titles[i] = m_titles[i];
 847                 m_titles[i] = "";
 848          }
 849   if (m_menus)
 850          {
 851                 delete[]m_menus;
 852                 delete[]m_titles;
 853          }
 854   m_menus = new_menus;
 855   m_titles = new_titles;
 856
 857   m_menus[m_menuCount - 1] = (wxMenu *)menu;
 858   m_titles[m_menuCount - 1] = title;
 859
 860   ((wxMenu *)menu)->m_menuBar = (wxMenuBar *) this;
 861   ((wxMenu *)menu)->SetParent(this);
 862 }
 863
 864 void wxMenuBar::Delete(wxMenu * menu, int i)
 865 {
 866   int j;
 867   int ii = (int) i;
 868
 869   if (menu != 0) {
 870          for (ii = 0; ii < m_menuCount; ii++) {
 871                 if (m_menus[ii] == menu)
 872         break;
 873          }
 874          if (ii >= m_menuCount)
 875                 return;
 876   } else {
 877          if (ii < 0 || ii >= m_menuCount)
 878                 return;
 879          menu = m_menus[ii];
 880   }
 881
 882   if (!OnDelete(menu, ii))
 883          return;
 884
 885   menu->SetParent(NULL);
 886
 887   -- m_menuCount;
 888   for (j = ii; j < m_menuCount; j++) {
 889          m_menus[j] = m_menus[j + 1];
 890          m_titles[j] = m_titles[j + 1];
 891   }
 892 }
 893
 894 // Find the menu menuString, item itemString, and return the item id.
 895 // Returns -1 if none found.
 896 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
 897 {
 898   char buf1[200];
 899   char buf2[200];
 900   wxStripMenuCodes ((char *)(const char *)menuString, buf1);
 901   int i;
 902   for (i = 0; i < m_menuCount; i++)
 903     {
 904       wxStripMenuCodes ((char *)(const char *)m_titles[i], buf2);
 905       if (strcmp (buf1, buf2) == 0)
 906         return m_menus[i]->FindItem (itemString);
 907     }
 908   return -1;
 909 }
 910
 911 wxMenuItem *wxMenuBar::FindItemForId (int Id, wxMenu ** itemMenu) const
 912 {
 913   if (itemMenu)
 914     *itemMenu = NULL;
 915
 916   wxMenuItem *item = NULL;
 917   int i;
 918   for (i = 0; i < m_menuCount; i++)
 919   {
 920     item = m_menus[i]->FindItemForId (Id, itemMenu);
 921     if (item)
 922       return item;
 923   }
 924   return NULL;
 925 }
 926
 927 void wxMenuBar::SetHelpString (int Id, const wxString& helpString)
 928 {
 929   int i;
 930   for (i = 0; i < m_menuCount; i++)
 931     {
 932       if (m_menus[i]->FindItemForId (Id))
 933         {
 934           m_menus[i]->SetHelpString (Id, helpString);
 935           return;
 936         }
 937     }
 938 }
 939
 940 wxString wxMenuBar::GetHelpString (int Id) const
 941 {
 942   int i;
 943   for (i = 0; i < m_menuCount; i++)
 944     {
 945       if (m_menus[i]->FindItemForId (Id))
 946             return wxString(m_menus[i]->GetHelpString (Id));
 947     }
 948   return wxString("");
 949 }
 950
 951 wxWindow *wxMenu::GetWindow() const
 952 {
 953   if ( m_pInvokingWindow != NULL )
 954     return m_pInvokingWindow;
 955   if ( m_menuBar != NULL)
 956     return m_menuBar->m_menuBarFrame;
 957   return NULL;
 958 }
 959
 960 WXHMENU wxMenu::GetHMenu() const
 961 {
 962   if ( m_hMenu != 0 )
 963     return m_hMenu;
 964   else if ( m_savehMenu != 0 )
 965     return m_savehMenu;
 966
 967   return 0;
 968 }
 969
 970 // Update a menu and all submenus recursively.
 971 // source is the object that has the update event handlers
 972 // defined for it. If NULL, the menu or associated window
 973 // will be used.
 974 void wxMenu::UpdateUI(wxEvtHandler* source)
 975 {
 976   if (!source && GetInvokingWindow())
 977     source = GetInvokingWindow()->GetEventHandler();
 978   if (!source)
 979     source = GetEventHandler();
 980   if (!source)
 981     source = this;
 982
 983   wxNode* node = GetItems().First();
 984   while (node)
 985   {
 986     wxMenuItem* item = (wxMenuItem*) node->Data();
 987     if ( !item->IsSeparator() )
 988     {
 989       wxWindowID id = item->GetId();
 990       wxUpdateUIEvent event(id);
 991       event.SetEventObject( source );
 992
 993       if (source->ProcessEvent(event))
 994       {
 995         if (event.GetSetText())
 996           SetLabel(id, event.GetText());
 997         if (event.GetSetChecked())
 998           Check(id, event.GetChecked());
 999         if (event.GetSetEnabled())
1000           Enable(id, event.GetEnabled());
1001       }
1002
1003       if (item->GetSubMenu())
1004         item->GetSubMenu()->UpdateUI(source);
1005     }
1006     node = node->Next();
1007   }
1008 }