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   // put the title string in bold face
 345   if ( !m_title.IsEmpty() )
 346   {
 347     MENUITEMINFO mii;
 348     mii.cbSize = sizeof(mii);
 349     mii.fMask = MIIM_STATE;
 350     mii.fState = MFS_DEFAULT;
 351
 352     if ( !SetMenuItemInfo(hMenu, (unsigned)idMenuTitle, FALSE, &mii) )
 353     {
 354       wxLogLastError("SetMenuItemInfo");
 355     }
 356   }
 357 }
 358
 359 const wxString wxMenu::GetTitle() const
 360 {
 361    return m_title;
 362 }
 363
 364 void wxMenu::SetLabel(int Id, const wxString& label)
 365 {
 366   wxMenuItem *item = FindItemForId(Id) ;
 367   if (item==NULL)
 368     return;
 369
 370   if (item->GetSubMenu()==NULL)
 371   {
 372     if (m_hMenu)
 373     {
 374       UINT was_flag = GetMenuState((HMENU)m_hMenu,Id,MF_BYCOMMAND) ;
 375       ModifyMenu((HMENU)m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 376     }
 377     else if (m_savehMenu)
 378     {
 379       UINT was_flag = GetMenuState((HMENU)m_savehMenu,Id,MF_BYCOMMAND) ;
 380       ModifyMenu((HMENU)m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 381     }
 382   }
 383   else
 384   {
 385     wxMenu *father = item->GetSubMenu()->m_topLevelMenu ;
 386     wxNode *node = father->m_menuItems.First() ;
 387     int i = 0 ;
 388     while (node)
 389     {
 390       wxMenuItem *matched = (wxMenuItem*)node->Data() ;
 391       if (matched==item)
 392         break ;
 393       i++ ;
 394       node = node->Next() ;
 395     }
 396     // Here, we have the position.
 397     ModifyMenu((HMENU)father->m_savehMenu,i,
 398                MF_BYPOSITION|MF_STRING|MF_POPUP,
 399                (UINT)item->GetSubMenu()->m_savehMenu,(const char *)label) ;
 400   }
 401   item->SetName(label);
 402 }
 403
 404 wxString wxMenu::GetLabel(int id) const
 405 {
 406 /*
 407   static char tmp[128] ;
 408   int len;
 409   if (m_hMenu)
 410     len = GetMenuString((HMENU)m_hMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 411   else if (m_savehMenu)
 412     len = GetMenuString((HMENU)m_savehMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 413   else
 414     len = 0 ;
 415   tmp[len] = '\0' ;
 416   return wxString(tmp) ;
 417
 418 */
 419     wxMenuItem *pItem = FindItemForId(id) ;
 420     if (pItem)
 421         return pItem->GetName() ;
 422     else
 423         return wxEmptyString;
 424 }
 425
 426 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 427 {
 428     // ignore commands from the menu title
 429
 430     // NB: VC++ generates wrong assembler for `if ( id != idMenuTitle )'!!
 431     if ( id != (WXWORD)idMenuTitle )
 432     {
 433         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 434         event.SetEventObject( this );
 435         event.SetId( id );
 436         event.SetInt( id );
 437         ProcessCommand(event);
 438     }
 439
 440     return TRUE;
 441 }
 442
 443 // Finds the item id matching the given string, -1 if not found.
 444 int wxMenu::FindItem (const wxString& itemString) const
 445 {
 446   char buf1[200];
 447   char buf2[200];
 448   wxStripMenuCodes ((char *)(const char *)itemString, buf1);
 449
 450   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 451     {
 452       wxMenuItem *item = (wxMenuItem *) node->Data ();
 453       if (item->GetSubMenu())
 454       {
 455         int ans = item->GetSubMenu()->FindItem(itemString);
 456         if (ans > -1)
 457           return ans;
 458       }
 459       if ( !item->IsSeparator() )
 460       {
 461         wxStripMenuCodes((char *)item->GetName().c_str(), buf2);
 462         if (strcmp(buf1, buf2) == 0)
 463           return item->GetId();
 464       }
 465     }
 466
 467   return -1;
 468 }
 469
 470 wxMenuItem *wxMenu::FindItemForId(int itemId, wxMenu ** itemMenu) const
 471 {
 472   if (itemMenu)
 473     *itemMenu = NULL;
 474   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 475   {
 476     wxMenuItem *item = (wxMenuItem *) node->Data ();
 477
 478     if (item->GetId() == itemId)
 479     {
 480       if (itemMenu)
 481         *itemMenu = (wxMenu *) this;
 482       return item;
 483     }
 484
 485     if (item->GetSubMenu())
 486     {
 487       wxMenuItem *ans = item->GetSubMenu()->FindItemForId (itemId, itemMenu);
 488       if (ans)
 489         return ans;
 490     }
 491   }
 492
 493   if (itemMenu)
 494     *itemMenu = NULL;
 495   return NULL;
 496 }
 497
 498 void wxMenu::SetHelpString(int itemId, const wxString& helpString)
 499 {
 500   wxMenuItem *item = FindItemForId (itemId);
 501   if (item)
 502     item->SetHelp(helpString);
 503 }
 504
 505 wxString wxMenu::GetHelpString (int itemId) const
 506 {
 507   wxMenuItem *item = FindItemForId (itemId);
 508   if (item)
 509     return item->GetHelp();
 510   else
 511     return wxEmptyString;
 512 }
 513
 514 void wxMenu::ProcessCommand(wxCommandEvent & event)
 515 {
 516   bool processed = FALSE;
 517
 518   // Try a callback
 519   if (m_callback)
 520   {
 521       (void)(*(m_callback))(*this, event);
 522       processed = TRUE;
 523   }
 524
 525   // Try the menu's event handler
 526   if ( !processed && GetEventHandler())
 527   {
 528       processed = GetEventHandler()->ProcessEvent(event);
 529   }
 530
 531   // Try the window the menu was popped up from (and up
 532   // through the hierarchy)
 533   if ( !processed && GetInvokingWindow())
 534     processed = GetInvokingWindow()->GetEventHandler()->ProcessEvent(event);
 535 }
 536
 537 extern wxMenu *wxCurrentPopupMenu;
 538 bool wxWindow::PopupMenu(wxMenu *menu, int x, int y)
 539 {
 540   menu->SetInvokingWindow(this);
 541   menu->UpdateUI();
 542
 543   HWND hWnd = (HWND) GetHWND();
 544   HMENU hMenu = (HMENU)menu->m_hMenu;
 545   POINT point;
 546   point.x = x;
 547   point.y = y;
 548   ::ClientToScreen(hWnd, &point);
 549   wxCurrentPopupMenu = menu;
 550   ::TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, point.x, point.y, 0, hWnd, NULL);
 551   wxYield();
 552   wxCurrentPopupMenu = NULL;
 553
 554   menu->SetInvokingWindow(NULL);
 555
 556   return TRUE;
 557 }
 558
 559 // Menu Bar
 560 wxMenuBar::wxMenuBar()
 561 {
 562   m_eventHandler = this;
 563
 564   m_menuCount = 0;
 565   m_menus = NULL;
 566   m_titles = NULL;
 567   m_menuBarFrame = NULL;
 568   m_hMenu = 0;
 569 }
 570
 571 wxMenuBar::wxMenuBar(int N, wxMenu *Menus[], const wxString Titles[])
 572 {
 573   m_eventHandler = this;
 574   m_menuCount = N;
 575   m_menus = Menus;
 576   m_titles = new wxString[N];
 577   int i;
 578   for ( i = 0; i < N; i++ )
 579         m_titles[i] = Titles[i];
 580   m_menuBarFrame = NULL;
 581   for (i = 0; i < N; i++)
 582     m_menus[i]->m_menuBar = (wxMenuBar *) this;
 583
 584   m_hMenu = 0;
 585 }
 586
 587 wxMenuBar::~wxMenuBar()
 588 {
 589   // In fact, don't want menu to be destroyed before MDI
 590   // shuffling has taken place. Let it be destroyed
 591   // automatically when the window is destroyed.
 592
 593 //  DestroyMenu(menu);
 594 //  m_hMenu = NULL;
 595
 596   int i;
 597 /*
 598   // See remarks in ::~wxMenu() method
 599   // BEWARE - this may interfere with MDI fixes, so
 600   // may need to remove
 601   int N = 0 ;
 602
 603   if (m_menuBarFrame && ((m_menuBarFrame->GetWindowStyleFlag() & wxSDI) == wxSDI))
 604   {
 605     if (menu)
 606       N = GetMenuItemCount(menu) ;
 607     for (i = N-1; i >= 0; i--)
 608       RemoveMenu(menu, i, MF_BYPOSITION);
 609   }
 610 */
 611   for (i = 0; i < m_menuCount; i++)
 612   {
 613     delete m_menus[i];
 614   }
 615   delete[] m_menus;
 616   delete[] m_titles;
 617
 618 /* Don't destroy menu here, in case we're MDI and
 619    need to do some shuffling with VALID menu handles.
 620   if (menu)
 621     DestroyMenu(menu);
 622   m_hMenu = 0;
 623 */
 624 }
 625
 626 // Must only be used AFTER menu has been attached to frame,
 627 // otherwise use individual menus to enable/disable items
 628 void wxMenuBar::Enable(int Id, bool Flag)
 629 {
 630   int ms_flag;
 631   if (Flag)
 632     ms_flag = MF_ENABLED;
 633   else
 634     ms_flag = MF_GRAYED;
 635
 636   wxMenu *itemMenu = NULL;
 637   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 638   if (!item)
 639     return;
 640
 641   if (itemMenu->m_hMenu)
 642     EnableMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 643   else if (itemMenu->m_savehMenu)
 644     EnableMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 645
 646 }
 647
 648 void wxMenuBar::EnableTop(int pos, bool flag)
 649 {
 650   int ms_flag;
 651   if (flag)
 652     ms_flag = MF_ENABLED;
 653   else
 654     ms_flag = MF_GRAYED;
 655
 656   EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | ms_flag);
 657   DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 658 }
 659
 660 // Must only be used AFTER menu has been attached to frame,
 661 // otherwise use individual menus
 662 void wxMenuBar::Check(int Id, bool Flag)
 663 {
 664   wxMenu *itemMenu = NULL;
 665   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 666   if (!item)
 667     return;
 668
 669   if (!item->IsCheckable())
 670     return ;
 671   int ms_flag;
 672   if (Flag)
 673     ms_flag = MF_CHECKED;
 674   else
 675     ms_flag = MF_UNCHECKED;
 676
 677   if (itemMenu->m_hMenu)
 678     CheckMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 679   else if (itemMenu->m_savehMenu)
 680     CheckMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 681
 682 //  CheckMenuItem((HMENU)m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 683 }
 684
 685 bool wxMenuBar::Checked(int Id) const
 686 {
 687   wxMenu *itemMenu = NULL;
 688   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 689   if (!item)
 690     return FALSE;
 691
 692   int Flag = 0;
 693
 694   if (itemMenu->m_hMenu)
 695     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 696   else if (itemMenu->m_savehMenu)
 697     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 698
 699 //  Flag=GetMenuState((HMENU)m_hMenu, Id, MF_BYCOMMAND) ;
 700
 701   if (Flag&MF_CHECKED)
 702     return TRUE ;
 703   else
 704     return FALSE ;
 705 }
 706
 707 bool wxMenuBar::Enabled(int Id) const
 708 {
 709   wxMenu *itemMenu = NULL;
 710   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 711   if (!item)
 712     return FALSE;
 713
 714   int Flag ;
 715
 716   if (itemMenu->m_hMenu)
 717     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 718   else if (itemMenu->m_savehMenu)
 719     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 720
 721   if (Flag&MF_ENABLED)
 722     return TRUE ;
 723   else
 724     return FALSE ;
 725 }
 726
 727
 728 void wxMenuBar::SetLabel(int Id, const wxString& label)
 729 {
 730   wxMenu *itemMenu = NULL;
 731   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 732
 733   if (!item)
 734     return;
 735
 736   if (itemMenu->m_hMenu)
 737   {
 738     UINT was_flag = GetMenuState((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND) ;
 739     ModifyMenu((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 740   }
 741   else if (itemMenu->m_savehMenu)
 742   {
 743     UINT was_flag = GetMenuState((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND) ;
 744     ModifyMenu((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 745   }
 746 }
 747
 748 wxString wxMenuBar::GetLabel(int Id) const
 749 {
 750   wxMenu *itemMenu = NULL;
 751   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 752
 753   if (!item)
 754     return wxString("");
 755
 756   static char tmp[128] ;
 757   int len = 0;
 758   if (itemMenu->m_hMenu)
 759   {
 760     len = GetMenuString((HMENU)itemMenu->m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 761   }
 762   else if (itemMenu->m_savehMenu)
 763   {
 764     len = GetMenuString((HMENU)itemMenu->m_savehMenu,Id,tmp,127,MF_BYCOMMAND) ;
 765   }
 766
 767 //  int len = GetMenuString((HMENU)m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 768   tmp[len] = '\0' ;
 769   return wxString(tmp) ;
 770 }
 771
 772 void wxMenuBar::SetLabelTop(int pos, const wxString& label)
 773 {
 774   UINT was_flag = GetMenuState((HMENU)m_hMenu,pos,MF_BYPOSITION) ;
 775   if (was_flag&MF_POPUP)
 776   {
 777     was_flag &= 0xff ;
 778     HMENU popup = GetSubMenu((HMENU)m_hMenu,pos) ;
 779     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,(UINT)popup,(const char *)label) ;
 780   }
 781   else
 782     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,pos,(const char *)label) ;
 783 }
 784
 785 wxString wxMenuBar::GetLabelTop(int pos) const
 786 {
 787   static char tmp[128] ;
 788   int len = GetMenuString((HMENU)m_hMenu,pos,tmp,127,MF_BYPOSITION) ;
 789   tmp[len] = '\0' ;
 790   return wxString(tmp);
 791 }
 792
 793 bool wxMenuBar::OnDelete(wxMenu *a_menu, int pos)
 794 {
 795   if (!m_menuBarFrame)
 796          return TRUE;
 797
 798   if (RemoveMenu((HMENU)m_hMenu, (UINT)pos, MF_BYPOSITION)) {
 799          m_menus[pos]->m_hMenu = m_menus[pos]->m_savehMenu;
 800          m_menus[pos]->m_savehMenu = 0;
 801
 802          if (m_menuBarFrame) {
 803                 DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 804          }
 805
 806          return TRUE;
 807   }
 808
 809   return FALSE;
 810 }
 811
 812 bool wxMenuBar::OnAppend(wxMenu *a_menu, const char *title)
 813 {
 814   if (!a_menu->m_hMenu)
 815          return FALSE;
 816
 817   if (!m_menuBarFrame)
 818          return TRUE;
 819
 820   a_menu->m_savehMenu = a_menu->m_hMenu;
 821   a_menu->m_hMenu = 0;
 822
 823   AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING, (UINT)a_menu->m_savehMenu, title);
 824
 825   DrawMenuBar((HWND) m_menuBarFrame->GetHWND());
 826
 827   return TRUE;
 828 }
 829
 830 void wxMenuBar::Append (wxMenu * menu, const wxString& title)
 831 {
 832   if (!OnAppend(menu, title))
 833          return;
 834
 835   m_menuCount ++;
 836   wxMenu **new_menus = new wxMenu *[m_menuCount];
 837   wxString *new_titles = new wxString[m_menuCount];
 838   int i;
 839
 840   for (i = 0; i < m_menuCount - 1; i++)
 841          {
 842                 new_menus[i] = m_menus[i];
 843                 m_menus[i] = NULL;
 844                 new_titles[i] = m_titles[i];
 845                 m_titles[i] = "";
 846          }
 847   if (m_menus)
 848          {
 849                 delete[]m_menus;
 850                 delete[]m_titles;
 851          }
 852   m_menus = new_menus;
 853   m_titles = new_titles;
 854
 855   m_menus[m_menuCount - 1] = (wxMenu *)menu;
 856   m_titles[m_menuCount - 1] = title;
 857
 858   ((wxMenu *)menu)->m_menuBar = (wxMenuBar *) this;
 859   ((wxMenu *)menu)->SetParent(this);
 860 }
 861
 862 void wxMenuBar::Delete(wxMenu * menu, int i)
 863 {
 864   int j;
 865   int ii = (int) i;
 866
 867   if (menu != 0) {
 868          for (ii = 0; ii < m_menuCount; ii++) {
 869                 if (m_menus[ii] == menu)
 870         break;
 871          }
 872          if (ii >= m_menuCount)
 873                 return;
 874   } else {
 875          if (ii < 0 || ii >= m_menuCount)
 876                 return;
 877          menu = m_menus[ii];
 878   }
 879
 880   if (!OnDelete(menu, ii))
 881          return;
 882
 883   menu->SetParent(NULL);
 884
 885   -- m_menuCount;
 886   for (j = ii; j < m_menuCount; j++) {
 887          m_menus[j] = m_menus[j + 1];
 888          m_titles[j] = m_titles[j + 1];
 889   }
 890 }
 891
 892 // Find the menu menuString, item itemString, and return the item id.
 893 // Returns -1 if none found.
 894 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
 895 {
 896   char buf1[200];
 897   char buf2[200];
 898   wxStripMenuCodes ((char *)(const char *)menuString, buf1);
 899   int i;
 900   for (i = 0; i < m_menuCount; i++)
 901     {
 902       wxStripMenuCodes ((char *)(const char *)m_titles[i], buf2);
 903       if (strcmp (buf1, buf2) == 0)
 904         return m_menus[i]->FindItem (itemString);
 905     }
 906   return -1;
 907 }
 908
 909 wxMenuItem *wxMenuBar::FindItemForId (int Id, wxMenu ** itemMenu) const
 910 {
 911   if (itemMenu)
 912     *itemMenu = NULL;
 913
 914   wxMenuItem *item = NULL;
 915   int i;
 916   for (i = 0; i < m_menuCount; i++)
 917   {
 918     item = m_menus[i]->FindItemForId (Id, itemMenu);
 919     if (item)
 920       return item;
 921   }
 922   return NULL;
 923 }
 924
 925 void wxMenuBar::SetHelpString (int Id, const wxString& helpString)
 926 {
 927   int i;
 928   for (i = 0; i < m_menuCount; i++)
 929     {
 930       if (m_menus[i]->FindItemForId (Id))
 931         {
 932           m_menus[i]->SetHelpString (Id, helpString);
 933           return;
 934         }
 935     }
 936 }
 937
 938 wxString wxMenuBar::GetHelpString (int Id) const
 939 {
 940   int i;
 941   for (i = 0; i < m_menuCount; i++)
 942     {
 943       if (m_menus[i]->FindItemForId (Id))
 944             return wxString(m_menus[i]->GetHelpString (Id));
 945     }
 946   return wxString("");
 947 }
 948
 949 wxWindow *wxMenu::GetWindow() const
 950 {
 951   if ( m_pInvokingWindow != NULL )
 952     return m_pInvokingWindow;
 953   if ( m_menuBar != NULL)
 954     return m_menuBar->m_menuBarFrame;
 955   return NULL;
 956 }
 957
 958 WXHMENU wxMenu::GetHMenu() const
 959 {
 960   if ( m_hMenu != 0 )
 961     return m_hMenu;
 962   else if ( m_savehMenu != 0 )
 963     return m_savehMenu;
 964
 965   return 0;
 966 }
 967
 968 // Update a menu and all submenus recursively.
 969 // source is the object that has the update event handlers
 970 // defined for it. If NULL, the menu or associated window
 971 // will be used.
 972 void wxMenu::UpdateUI(wxEvtHandler* source)
 973 {
 974   if (!source && GetInvokingWindow())
 975     source = GetInvokingWindow()->GetEventHandler();
 976   if (!source)
 977     source = GetEventHandler();
 978   if (!source)
 979     source = this;
 980
 981   wxNode* node = GetItems().First();
 982   while (node)
 983   {
 984     wxMenuItem* item = (wxMenuItem*) node->Data();
 985     if ( !item->IsSeparator() )
 986     {
 987       wxWindowID id = item->GetId();
 988       wxUpdateUIEvent event(id);
 989       event.SetEventObject( source );
 990
 991       if (source->ProcessEvent(event))
 992       {
 993         if (event.GetSetText())
 994           SetLabel(id, event.GetText());
 995         if (event.GetSetChecked())
 996           Check(id, event.GetChecked());
 997         if (event.GetSetEnabled())
 998           Enable(id, event.GetEnabled());
 999       }
1000
1001       if (item->GetSubMenu())
1002         item->GetSubMenu()->UpdateUI(source);
1003     }
1004     node = node->Next();
1005   }
1006 }