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