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