samples/menu/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        samples/menu.cpp
   3 // Purpose:     wxMenu/wxMenuBar sample
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     01.11.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/app.h"
  29     #include "wx/frame.h"
  30     #include "wx/menu.h"
  31     #include "wx/msgdlg.h"
  32     #include "wx/log.h"
  33     #include "wx/textctrl.h"
  34     #include "wx/textdlg.h"
  35 #endif
  36
  37 #if !wxUSE_MENUS
  38     // nice try...
  39     #error "menu sample requires wxUSE_MENUS=1"
  40 #endif // wxUSE_MENUS
  41
  42 #include "copy.xpm"
  43
  44 // ----------------------------------------------------------------------------
  45 // classes
  46 // ----------------------------------------------------------------------------
  47
  48 // Define a new application
  49 class MyApp: public wxApp
  50 {
  51 public:
  52     bool OnInit();
  53 };
  54
  55 // Define a new frame
  56 class MyFrame: public wxFrame
  57 {
  58 public:
  59     MyFrame();
  60
  61     virtual ~MyFrame();
  62
  63     void LogMenuEvent(const wxCommandEvent& event);
  64
  65 protected:
  66     void OnQuit(wxCommandEvent& event);
  67     void OnClearLog(wxCommandEvent& event);
  68
  69     void OnAbout(wxCommandEvent& event);
  70
  71     void OnDummy(wxCommandEvent& event);
  72
  73     void OnAppendMenuItem(wxCommandEvent& event);
  74     void OnAppendSubMenu(wxCommandEvent& event);
  75     void OnDeleteMenuItem(wxCommandEvent& event);
  76     void OnInsertMenuItem(wxCommandEvent& event);
  77     void OnCheckMenuItem(wxCommandEvent& event);
  78     void OnEnableMenuItem(wxCommandEvent& event);
  79     void OnGetLabelMenuItem(wxCommandEvent& event);
  80     void OnSetLabelMenuItem(wxCommandEvent& event);
  81     void OnGetMenuItemInfo(wxCommandEvent& event);
  82
  83     void OnAppendMenu(wxCommandEvent& event);
  84     void OnInsertMenu(wxCommandEvent& event);
  85     void OnDeleteMenu(wxCommandEvent& event);
  86     void OnToggleMenu(wxCommandEvent& event);
  87     void OnEnableMenu(wxCommandEvent& event);
  88     void OnGetLabelMenu(wxCommandEvent& event);
  89     void OnSetLabelMenu(wxCommandEvent& event);
  90
  91     void OnTestNormal(wxCommandEvent& event);
  92     void OnTestCheck(wxCommandEvent& event);
  93     void OnTestRadio(wxCommandEvent& event);
  94
  95 #ifdef __WXMSW__
  96     void OnContextMenu(wxContextMenuEvent& event)
  97         { ShowContextMenu(ScreenToClient(event.GetPosition())); }
  98 #else
  99     void OnRightUp(wxMouseEvent& event)
 100         { ShowContextMenu(event.GetPosition()); }
 101 #endif
 102
 103     void OnMenuOpen(wxMenuEvent& event)
 104         { LogMenuOpenOrClose(event, _T("opened")); }
 105     void OnMenuClose(wxMenuEvent& event)
 106         { LogMenuOpenOrClose(event, _T("closed")); }
 107
 108     void OnUpdateCheckMenuItemUI(wxUpdateUIEvent& event);
 109
 110     void OnSize(wxSizeEvent& event);
 111
 112 private:
 113     void LogMenuOpenOrClose(const wxMenuEvent& event, const wxChar *what);
 114     void ShowContextMenu(const wxPoint& pos);
 115
 116     wxMenu *CreateDummyMenu(wxString *title);
 117
 118     wxMenuItem *GetLastMenuItem() const;
 119
 120     // the menu previously detached from the menubar (may be NULL)
 121     wxMenu *m_menu;
 122
 123     // the count of dummy menus already created
 124     size_t m_countDummy;
 125
 126     // the control used for logging
 127     wxTextCtrl *m_textctrl;
 128
 129     // the previous log target
 130     wxLog *m_logOld;
 131
 132     DECLARE_EVENT_TABLE()
 133 };
 134
 135 // A small helper class which intercepts all menu events and logs them
 136 class MyEvtHandler : public wxEvtHandler
 137 {
 138 public:
 139     MyEvtHandler(MyFrame *frame) { m_frame = frame; }
 140
 141     void OnMenuEvent(wxCommandEvent& event)
 142     {
 143         m_frame->LogMenuEvent(event);
 144
 145         event.Skip();
 146     }
 147
 148 private:
 149     MyFrame *m_frame;
 150
 151     DECLARE_EVENT_TABLE()
 152 };
 153
 154 // ----------------------------------------------------------------------------
 155 // constants
 156 // ----------------------------------------------------------------------------
 157
 158 enum
 159 {
 160     Menu_File_Quit = 100,
 161     Menu_File_ClearLog,
 162
 163     Menu_MenuBar_Toggle = 200,
 164     Menu_MenuBar_Append,
 165     Menu_MenuBar_Insert,
 166     Menu_MenuBar_Delete,
 167     Menu_MenuBar_Enable,
 168     Menu_MenuBar_GetLabel,
 169     Menu_MenuBar_SetLabel,
 170
 171     Menu_Menu_Append = 300,
 172     Menu_Menu_AppendSub,
 173     Menu_Menu_Insert,
 174     Menu_Menu_Delete,
 175     Menu_Menu_Enable,
 176     Menu_Menu_Check,
 177     Menu_Menu_GetLabel,
 178     Menu_Menu_SetLabel,
 179     Menu_Menu_GetInfo,
 180
 181     Menu_Test_Normal = 400,
 182     Menu_Test_Check,
 183     Menu_Test_Radio1,
 184     Menu_Test_Radio2,
 185     Menu_Test_Radio3,
 186
 187     Menu_Dummy_First = 500,
 188     Menu_Dummy_Second,
 189     Menu_Dummy_Third,
 190     Menu_Dummy_Fourth,
 191     Menu_Dummy_Last,
 192
 193     Menu_Help_About = 1000,
 194
 195     Menu_Popup_ToBeDeleted = 2000,
 196     Menu_Popup_ToBeGreyed,
 197     Menu_Popup_ToBeChecked,
 198     Menu_Popup_Submenu,
 199
 200     Menu_Max
 201 };
 202
 203 // ----------------------------------------------------------------------------
 204 // event tables
 205 // ----------------------------------------------------------------------------
 206
 207 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 208     EVT_MENU(Menu_File_Quit,     MyFrame::OnQuit)
 209     EVT_MENU(Menu_File_ClearLog, MyFrame::OnClearLog)
 210
 211     EVT_MENU(Menu_Help_About, MyFrame::OnAbout)
 212
 213     EVT_MENU(Menu_MenuBar_Toggle,   MyFrame::OnToggleMenu)
 214     EVT_MENU(Menu_MenuBar_Append,   MyFrame::OnAppendMenu)
 215     EVT_MENU(Menu_MenuBar_Insert,   MyFrame::OnInsertMenu)
 216     EVT_MENU(Menu_MenuBar_Delete,   MyFrame::OnDeleteMenu)
 217     EVT_MENU(Menu_MenuBar_Enable,   MyFrame::OnEnableMenu)
 218     EVT_MENU(Menu_MenuBar_GetLabel, MyFrame::OnGetLabelMenu)
 219     EVT_MENU(Menu_MenuBar_SetLabel, MyFrame::OnSetLabelMenu)
 220
 221     EVT_MENU(Menu_Menu_Append,    MyFrame::OnAppendMenuItem)
 222     EVT_MENU(Menu_Menu_AppendSub, MyFrame::OnAppendSubMenu)
 223     EVT_MENU(Menu_Menu_Insert,    MyFrame::OnInsertMenuItem)
 224     EVT_MENU(Menu_Menu_Delete,    MyFrame::OnDeleteMenuItem)
 225     EVT_MENU(Menu_Menu_Enable,    MyFrame::OnEnableMenuItem)
 226     EVT_MENU(Menu_Menu_Check,     MyFrame::OnCheckMenuItem)
 227     EVT_MENU(Menu_Menu_GetLabel,  MyFrame::OnGetLabelMenuItem)
 228     EVT_MENU(Menu_Menu_SetLabel,  MyFrame::OnSetLabelMenuItem)
 229     EVT_MENU(Menu_Menu_GetInfo,   MyFrame::OnGetMenuItemInfo)
 230
 231     EVT_MENU(Menu_Test_Normal,    MyFrame::OnTestNormal)
 232     EVT_MENU(Menu_Test_Check,     MyFrame::OnTestCheck)
 233     EVT_MENU(Menu_Test_Radio1,    MyFrame::OnTestRadio)
 234     EVT_MENU(Menu_Test_Radio2,    MyFrame::OnTestRadio)
 235     EVT_MENU(Menu_Test_Radio3,    MyFrame::OnTestRadio)
 236
 237     EVT_MENU_RANGE(Menu_Dummy_First, Menu_Dummy_Last, MyFrame::OnDummy)
 238
 239     EVT_UPDATE_UI(Menu_Menu_Check, MyFrame::OnUpdateCheckMenuItemUI)
 240
 241 #ifdef __WXMSW__
 242     EVT_CONTEXT_MENU(MyFrame::OnContextMenu)
 243 #else
 244     EVT_RIGHT_UP(MyFrame::OnRightUp)
 245 #endif
 246
 247     EVT_MENU_OPEN(MyFrame::OnMenuOpen)
 248     EVT_MENU_CLOSE(MyFrame::OnMenuClose)
 249
 250     EVT_SIZE(MyFrame::OnSize)
 251 END_EVENT_TABLE()
 252
 253 BEGIN_EVENT_TABLE(MyEvtHandler, wxEvtHandler)
 254     EVT_MENU(-1, MyEvtHandler::OnMenuEvent)
 255 END_EVENT_TABLE()
 256
 257 // ============================================================================
 258 // implementation
 259 // ============================================================================
 260
 261 // ----------------------------------------------------------------------------
 262 // MyApp
 263 // ----------------------------------------------------------------------------
 264
 265 IMPLEMENT_APP(MyApp)
 266
 267 // The `main program' equivalent, creating the windows and returning the
 268 // main frame
 269 bool MyApp::OnInit()
 270 {
 271     // Create the main frame window
 272     MyFrame* frame = new MyFrame;
 273
 274     frame->Show(TRUE);
 275
 276 #if wxUSE_STATUSBAR
 277     frame->SetStatusText("Welcome to wxWindows menu sample");
 278 #endif // wxUSE_STATUSBAR
 279
 280     SetTopWindow(frame);
 281
 282     return TRUE;
 283 }
 284
 285 // ----------------------------------------------------------------------------
 286 // MyFrame
 287 // ----------------------------------------------------------------------------
 288
 289 // Define my frame constructor
 290 MyFrame::MyFrame()
 291        : wxFrame((wxFrame *)NULL, -1, "wxWindows menu sample",
 292                  wxDefaultPosition, wxSize(400, 250))
 293 {
 294     m_textctrl = NULL;
 295     m_menu = NULL;
 296     m_countDummy = 0;
 297     m_logOld = NULL;
 298
 299 #if wxUSE_STATUSBAR
 300     CreateStatusBar();
 301 #endif // wxUSE_STATUSBAR
 302
 303     // create the menubar
 304     wxMenu *fileMenu = new wxMenu;
 305
 306     wxMenuItem *item = new wxMenuItem(fileMenu, Menu_File_ClearLog,
 307                                       "Clear &log\tCtrl-L");
 308     item->SetBitmap(copy_xpm);
 309     fileMenu->Append(item);
 310     fileMenu->AppendSeparator();
 311     fileMenu->Append(Menu_File_Quit, "E&xit\tAlt-X", "Quit menu sample");
 312
 313     wxMenu *menubarMenu = new wxMenu;
 314     menubarMenu->Append(Menu_MenuBar_Append, "&Append menu\tCtrl-A",
 315                         "Append a menu to the menubar");
 316     menubarMenu->Append(Menu_MenuBar_Insert, "&Insert menu\tCtrl-I",
 317                         "Insert a menu into the menubar");
 318     menubarMenu->Append(Menu_MenuBar_Delete, "&Delete menu\tCtrl-D",
 319                         "Delete the last menu from the menubar");
 320     menubarMenu->Append(Menu_MenuBar_Toggle, "&Toggle menu\tCtrl-T",
 321                         "Toggle the first menu in the menubar", TRUE);
 322     menubarMenu->AppendSeparator();
 323     menubarMenu->Append(Menu_MenuBar_Enable, "&Enable menu\tCtrl-E",
 324                         "Enable or disable the last menu", TRUE);
 325     menubarMenu->AppendSeparator();
 326     menubarMenu->Append(Menu_MenuBar_GetLabel, "&Get menu label\tCtrl-G",
 327                         "Get the label of the last menu");
 328     menubarMenu->Append(Menu_MenuBar_SetLabel, "&Set menu label\tCtrl-S",
 329                         "Change the label of the last menu");
 330
 331     wxMenu *menuMenu = new wxMenu;
 332     menuMenu->Append(Menu_Menu_Append, "&Append menu item\tAlt-A",
 333                      "Append a menu item to the last menu");
 334     menuMenu->Append(Menu_Menu_AppendSub, "&Append sub menu\tAlt-S",
 335                      "Append a sub menu to the last menu");
 336     menuMenu->Append(Menu_Menu_Insert, "&Insert menu item\tAlt-I",
 337                      "Insert a menu item in head of the last menu");
 338     menuMenu->Append(Menu_Menu_Delete, "&Delete menu item\tAlt-D",
 339                      "Delete the last menu item from the last menu");
 340     menuMenu->AppendSeparator();
 341     menuMenu->Append(Menu_Menu_Enable, "&Enable menu item\tAlt-E",
 342                      "Enable or disable the last menu item", TRUE);
 343     menuMenu->Append(Menu_Menu_Check, "&Check menu item\tAlt-C",
 344                      "Check or uncheck the last menu item", TRUE);
 345     menuMenu->AppendSeparator();
 346     menuMenu->Append(Menu_Menu_GetLabel, "&Get menu item label\tAlt-G",
 347                      "Get the label of the last menu item");
 348     menuMenu->Append(Menu_Menu_SetLabel, "&Set menu item label\tAlt-S",
 349                      "Change the label of the last menu item");
 350     menuMenu->AppendSeparator();
 351     menuMenu->Append(Menu_Menu_GetInfo, "Get menu item in&fo\tAlt-F",
 352                      "Show the state of the last menu item");
 353
 354     wxMenu *testMenu = new wxMenu;
 355     testMenu->Append(Menu_Test_Normal, "&Normal item");
 356     testMenu->AppendSeparator();
 357     testMenu->AppendCheckItem(Menu_Test_Check, "&Check item");
 358     testMenu->AppendSeparator();
 359     testMenu->AppendRadioItem(Menu_Test_Radio1, "Radio item &1");
 360     testMenu->AppendRadioItem(Menu_Test_Radio2, "Radio item &2");
 361     testMenu->AppendRadioItem(Menu_Test_Radio3, "Radio item &3");
 362
 363     wxMenu *helpMenu = new wxMenu;
 364     helpMenu->Append(Menu_Help_About, "&About\tF1", "About menu sample");
 365
 366     wxMenuBar* menuBar = new wxMenuBar( wxMB_DOCKABLE );
 367
 368     menuBar->Append(fileMenu, "&File");
 369     menuBar->Append(menubarMenu, "Menu&bar");
 370     menuBar->Append(menuMenu, "&Menu");
 371     menuBar->Append(testMenu, "&Test");
 372     menuBar->Append(helpMenu, "&Help");
 373
 374     // these items should be initially checked
 375     menuBar->Check(Menu_MenuBar_Toggle, TRUE);
 376     menuBar->Check(Menu_MenuBar_Enable, TRUE);
 377     menuBar->Check(Menu_Menu_Enable, TRUE);
 378     menuBar->Check(Menu_Menu_Check, FALSE);
 379
 380     // associate the menu bar with the frame
 381     SetMenuBar(menuBar);
 382
 383     // intercept all menu events and log them in this custom event handler
 384     PushEventHandler(new MyEvtHandler(this));
 385
 386     // create the log text window
 387     m_textctrl = new wxTextCtrl(this, -1, _T(""),
 388                                 wxDefaultPosition, wxDefaultSize,
 389                                 wxTE_MULTILINE);
 390     m_textctrl->SetEditable(FALSE);
 391
 392     wxLog::SetTimestamp(NULL);
 393     m_logOld = wxLog::SetActiveTarget(new wxLogTextCtrl(m_textctrl));
 394
 395     wxLogMessage(_T("Brief explanations: the commands or the \"Menu\" menu ")
 396                  _T("append/insert/delete items to/from the last menu.\n")
 397                  _T("The commands from \"Menubar\" menu work with the ")
 398                  _T("menubar itself.\n\n")
 399                  _T("Right click the band below to test popup menus.\n"));
 400 }
 401
 402 MyFrame::~MyFrame()
 403 {
 404     delete m_menu;
 405
 406     // delete the event handler installed in ctor
 407     PopEventHandler(TRUE);
 408
 409     // restore old logger
 410     delete wxLog::SetActiveTarget(m_logOld);
 411 }
 412
 413 wxMenu *MyFrame::CreateDummyMenu(wxString *title)
 414 {
 415     wxMenu *menu = new wxMenu;
 416     menu->Append(Menu_Dummy_First, "&First item\tCtrl-F1");
 417     menu->AppendSeparator();
 418     menu->Append(Menu_Dummy_Second, "&Second item\tCtrl-F2", "", TRUE);
 419
 420     if ( title )
 421     {
 422         title->Printf(wxT("Dummy menu &%d"), ++m_countDummy);
 423     }
 424
 425     return menu;
 426 }
 427
 428 wxMenuItem *MyFrame::GetLastMenuItem() const
 429 {
 430     wxMenuBar *menubar = GetMenuBar();
 431     wxMenu *menu = menubar->GetMenu(menubar->GetMenuCount() - 1);
 432
 433     wxMenuItemList::Node *node = menu->GetMenuItems().GetLast();
 434     if ( !node )
 435     {
 436         wxLogWarning(wxT("No last item in the last menu!"));
 437
 438         return NULL;
 439     }
 440     else
 441     {
 442         return node->GetData();
 443     }
 444 }
 445
 446 void MyFrame::LogMenuEvent(const wxCommandEvent& event)
 447 {
 448     int id = event.GetId();
 449     if ( !GetMenuBar()->FindItem(id) )
 450         return;
 451
 452     wxString msg = wxString::Format(wxT("Menu command %d"), id);
 453     if ( GetMenuBar()->FindItem(id)->IsCheckable() )
 454     {
 455         msg += wxString::Format(wxT(" (the item is currently %schecked)"),
 456                                 event.IsChecked() ? "" : "not ");
 457     }
 458
 459     wxLogMessage(msg);
 460 }
 461
 462 // ----------------------------------------------------------------------------
 463 // menu callbacks
 464 // ----------------------------------------------------------------------------
 465
 466 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 467 {
 468     Close(TRUE);
 469 }
 470
 471 void MyFrame::OnClearLog(wxCommandEvent& WXUNUSED(event))
 472 {
 473     m_textctrl->Clear();
 474 }
 475
 476 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 477 {
 478     (void)wxMessageBox("wxWindows menu sample\n© 1999-2001 Vadim Zeitlin",
 479                        "About wxWindows menu sample",
 480                        wxICON_INFORMATION);
 481 }
 482
 483 void MyFrame::OnDeleteMenu(wxCommandEvent& WXUNUSED(event))
 484 {
 485     wxMenuBar *mbar = GetMenuBar();
 486
 487     size_t count = mbar->GetMenuCount();
 488     if ( count == 2 )
 489     {
 490         // don't let delete the first 2 menus
 491         wxLogError(wxT("Can't delete any more menus"));
 492     }
 493     else
 494     {
 495         delete mbar->Remove(count - 1);
 496     }
 497 }
 498
 499 void MyFrame::OnInsertMenu(wxCommandEvent& WXUNUSED(event))
 500 {
 501     wxString title;
 502     wxMenu *menu = CreateDummyMenu(&title);
 503     GetMenuBar()->Insert(0, menu, title);
 504 }
 505
 506 void MyFrame::OnAppendMenu(wxCommandEvent& WXUNUSED(event))
 507 {
 508     wxString title;
 509     wxMenu *menu = CreateDummyMenu(&title);
 510     GetMenuBar()->Append(menu, title);
 511 }
 512
 513 void MyFrame::OnToggleMenu(wxCommandEvent& WXUNUSED(event))
 514 {
 515     wxMenuBar *mbar = GetMenuBar();
 516     if ( !m_menu )
 517     {
 518         // hide the menu
 519         m_menu = mbar->Remove(0);
 520     }
 521     else
 522     {
 523         // restore it
 524         mbar->Insert(0, m_menu, "&File");
 525         m_menu = NULL;
 526     }
 527 }
 528
 529 void MyFrame::OnEnableMenu(wxCommandEvent& event)
 530 {
 531     wxMenuBar *mbar = GetMenuBar();
 532     size_t count = mbar->GetMenuCount();
 533
 534     mbar->EnableTop(count - 1, event.IsChecked());
 535 }
 536
 537 void MyFrame::OnGetLabelMenu(wxCommandEvent& WXUNUSED(event))
 538 {
 539     wxMenuBar *mbar = GetMenuBar();
 540     size_t count = mbar->GetMenuCount();
 541
 542     wxCHECK_RET( count, _T("no last menu?") );
 543
 544     wxLogMessage(wxT("The label of the last menu item is '%s'"),
 545                  mbar->GetLabelTop(count - 1).c_str());
 546 }
 547
 548 void MyFrame::OnSetLabelMenu(wxCommandEvent& WXUNUSED(event))
 549 {
 550     wxMenuBar *mbar = GetMenuBar();
 551     size_t count = mbar->GetMenuCount();
 552
 553     wxCHECK_RET( count, _T("no last menu?") );
 554
 555     wxString label = wxGetTextFromUser
 556                      (
 557                         _T("Enter new label: "),
 558                         _T("Change last menu text"),
 559                         mbar->GetLabelTop(count - 1),
 560                         this
 561                      );
 562
 563     if ( !label.empty() )
 564     {
 565         mbar->SetLabelTop(count - 1, label);
 566     }
 567 }
 568
 569 void MyFrame::OnDummy(wxCommandEvent& event)
 570 {
 571     wxLogMessage(wxT("Dummy item #%d"), event.GetId() - Menu_Dummy_First + 1);
 572 }
 573
 574 void MyFrame::OnAppendMenuItem(wxCommandEvent& WXUNUSED(event))
 575 {
 576     wxMenuBar *menubar = GetMenuBar();
 577     wxMenu *menu = menubar->GetMenu(menubar->GetMenuCount() - 1);
 578
 579     menu->AppendSeparator();
 580     menu->Append(Menu_Dummy_Third, "&Third dummy item\tCtrl-F3",
 581                  "Checkable item", TRUE);
 582 }
 583
 584 void MyFrame::OnAppendSubMenu(wxCommandEvent& WXUNUSED(event))
 585 {
 586     wxMenuBar *menubar = GetMenuBar();
 587
 588     wxMenu *menu = menubar->GetMenu(menubar->GetMenuCount() - 1);
 589
 590     menu->Append(Menu_Dummy_Last, "&Dummy sub menu",
 591                  CreateDummyMenu(NULL), "Dummy sub menu help");
 592 }
 593
 594 void MyFrame::OnDeleteMenuItem(wxCommandEvent& WXUNUSED(event))
 595 {
 596     wxMenuBar *menubar = GetMenuBar();
 597     wxMenu *menu = menubar->GetMenu(menubar->GetMenuCount() - 1);
 598
 599     size_t count = menu->GetMenuItemCount();
 600     if ( !count )
 601     {
 602         wxLogWarning(wxT("No items to delete!"));
 603     }
 604     else
 605     {
 606         menu->Destroy(menu->GetMenuItems().Item(count - 1)->GetData());
 607     }
 608 }
 609
 610 void MyFrame::OnInsertMenuItem(wxCommandEvent& WXUNUSED(event))
 611 {
 612     wxMenuBar *menubar = GetMenuBar();
 613     wxMenu *menu = menubar->GetMenu(menubar->GetMenuCount() - 1);
 614
 615     menu->Insert(0, wxMenuItem::New(menu, Menu_Dummy_Fourth,
 616                                     "Fourth dummy item\tCtrl-F4"));
 617     menu->Insert(1, wxMenuItem::New(menu, wxID_SEPARATOR, ""));
 618 }
 619
 620 void MyFrame::OnEnableMenuItem(wxCommandEvent& WXUNUSED(event))
 621 {
 622     wxMenuItem *item = GetLastMenuItem();
 623
 624     if ( item )
 625     {
 626         item->Enable(!item->IsEnabled());
 627     }
 628 }
 629
 630 void MyFrame::OnCheckMenuItem(wxCommandEvent& WXUNUSED(event))
 631 {
 632     wxMenuItem *item = GetLastMenuItem();
 633
 634     item->Toggle();
 635 }
 636
 637 void MyFrame::OnUpdateCheckMenuItemUI(wxUpdateUIEvent& event)
 638 {
 639     wxLogNull nolog;
 640
 641     wxMenuItem *item = GetLastMenuItem();
 642
 643     event.Enable(item && item->IsCheckable());
 644 }
 645
 646 void MyFrame::OnGetLabelMenuItem(wxCommandEvent& WXUNUSED(event))
 647 {
 648     wxMenuItem *item = GetLastMenuItem();
 649
 650     if ( item )
 651     {
 652         wxLogMessage(wxT("The label of the last menu item is '%s'"),
 653                      item->GetLabel().c_str());
 654     }
 655 }
 656
 657 void MyFrame::OnSetLabelMenuItem(wxCommandEvent& WXUNUSED(event))
 658 {
 659     wxMenuItem *item = GetLastMenuItem();
 660
 661     if ( item )
 662     {
 663         wxString label = wxGetTextFromUser
 664                          (
 665                             _T("Enter new label: "),
 666                             _T("Change last menu item text"),
 667                             item->GetLabel(),
 668                             this
 669                          );
 670
 671         if ( !label.empty() )
 672         {
 673             item->SetText(label);
 674         }
 675     }
 676 }
 677
 678 void MyFrame::OnGetMenuItemInfo(wxCommandEvent& WXUNUSED(event))
 679 {
 680     wxMenuItem *item = GetLastMenuItem();
 681
 682     if ( item )
 683     {
 684         wxString msg;
 685         msg << "The item is " << (item->IsEnabled() ? "enabled"
 686                                                     : "disabled")
 687             << '\n';
 688
 689         if ( item->IsCheckable() )
 690         {
 691             msg << "It is checkable and " << (item->IsChecked() ? "" : "un")
 692                 << "checked\n";
 693         }
 694
 695 #if wxUSE_ACCEL
 696         wxAcceleratorEntry *accel = item->GetAccel();
 697         if ( accel )
 698         {
 699             msg << "Its accelerator is ";
 700
 701             int flags = accel->GetFlags();
 702             if ( flags & wxACCEL_ALT )
 703                 msg << wxT("Alt-");
 704             if ( flags & wxACCEL_CTRL )
 705                 msg << wxT("Ctrl-");
 706             if ( flags & wxACCEL_SHIFT )
 707                 msg << wxT("Shift-");
 708
 709             int code = accel->GetKeyCode();
 710             switch ( code )
 711             {
 712                 case WXK_F1:
 713                 case WXK_F2:
 714                 case WXK_F3:
 715                 case WXK_F4:
 716                 case WXK_F5:
 717                 case WXK_F6:
 718                 case WXK_F7:
 719                 case WXK_F8:
 720                 case WXK_F9:
 721                 case WXK_F10:
 722                 case WXK_F11:
 723                 case WXK_F12:
 724                     msg << wxT('F') << code - WXK_F1 + 1;
 725                     break;
 726
 727                 // if there are any other keys wxGetAccelFromString() may return,
 728                 // we should process them here
 729
 730                 default:
 731                     if ( wxIsalnum(code) )
 732                     {
 733                         msg << (wxChar)code;
 734
 735                         break;
 736                     }
 737
 738                     wxFAIL_MSG( wxT("unknown keyboard accel") );
 739             }
 740
 741             delete accel;
 742         }
 743         else
 744         {
 745             msg << "It doesn't have an accelerator";
 746         }
 747 #endif // wxUSE_ACCEL
 748
 749         wxLogMessage(msg);
 750     }
 751 }
 752
 753 void MyFrame::ShowContextMenu(const wxPoint& pos)
 754 {
 755     wxMenu menu("Test popup");
 756
 757     menu.Append(Menu_Help_About, "&About");
 758     menu.Append(Menu_Popup_Submenu, "&Submenu", CreateDummyMenu(NULL));
 759     menu.Append(Menu_Popup_ToBeDeleted, "To be &deleted");
 760     menu.Append(Menu_Popup_ToBeChecked, "To be &checked", "", TRUE);
 761     menu.Append(Menu_Popup_ToBeGreyed, "To be &greyed");
 762     menu.AppendSeparator();
 763     menu.Append(Menu_File_Quit, "E&xit");
 764
 765     menu.Delete(Menu_Popup_ToBeDeleted);
 766     menu.Check(Menu_Popup_ToBeChecked, TRUE);
 767     menu.Enable(Menu_Popup_ToBeGreyed, FALSE);
 768
 769     PopupMenu(&menu, pos.x, pos.y);
 770
 771     // test for destroying items in popup menus
 772 #if 0 // doesn't work in wxGTK!
 773     menu.Destroy(Menu_Popup_Submenu);
 774
 775     PopupMenu( &menu, event.GetX(), event.GetY() );
 776 #endif // 0
 777 }
 778
 779 void MyFrame::OnTestNormal(wxCommandEvent& event)
 780 {
 781     wxLogMessage(_T("Normal item selected"));
 782 }
 783
 784 void MyFrame::OnTestCheck(wxCommandEvent& event)
 785 {
 786     wxLogMessage(_T("Check item %schecked"),
 787                  event.IsChecked() ? _T("") : _T("un"));
 788 }
 789
 790 void MyFrame::OnTestRadio(wxCommandEvent& event)
 791 {
 792     wxLogMessage(_T("Radio item %d selected"),
 793                  event.GetId() - Menu_Test_Radio1 + 1);
 794 }
 795
 796 void MyFrame::LogMenuOpenOrClose(const wxMenuEvent& event, const wxChar *what)
 797 {
 798     wxLogStatus(this, _T("A %smenu has been %s."),
 799                 event.IsPopup() ? _T("popup ") : _T(""), what);
 800 }
 801
 802 void MyFrame::OnSize(wxSizeEvent& event)
 803 {
 804     if ( !m_textctrl )
 805         return;
 806
 807     // leave a band below for popup menu testing
 808     wxSize size = GetClientSize();
 809     m_textctrl->SetSize(0, 0, size.x, (3*size.y)/4);
 810
 811     // this is really ugly but we have to do it as we can't just call
 812     // event.Skip() because wxFrameBase would make the text control fill the
 813     // entire frame then
 814 #ifdef __WXUNIVERSAL__
 815     PositionMenuBar();
 816 #endif // __WXUNIVERSAL__
 817 }
 818