samples/widgets/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        combobox.cpp
   4 // Purpose:     Part of the widgets sample showing wxComboBox
   5 // Author:      Vadim Zeitlin
   6 // Created:     27.03.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // License:     wxWindows license
  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 #if wxUSE_COMBOBOX
  28
  29 // for all others, include the necessary headers
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32
  33     #include "wx/bitmap.h"
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/combobox.h"
  37     #include "wx/radiobox.h"
  38     #include "wx/statbox.h"
  39     #include "wx/textctrl.h"
  40 #endif
  41
  42 #include "wx/sizer.h"
  43
  44 #include "itemcontainer.h"
  45 #include "widgets.h"
  46 #if 1
  47 #include "icons/combobox.xpm"
  48
  49 // ----------------------------------------------------------------------------
  50 // constants
  51 // ----------------------------------------------------------------------------
  52
  53 // control ids
  54 enum
  55 {
  56     ComboPage_Reset = wxID_HIGHEST,
  57     ComboPage_SetCurrent,
  58     ComboPage_CurText,
  59     ComboPage_InsertionPointText,
  60     ComboPage_Insert,
  61     ComboPage_InsertText,
  62     ComboPage_Add,
  63     ComboPage_AddText,
  64     ComboPage_AddSeveral,
  65     ComboPage_AddMany,
  66     ComboPage_Clear,
  67     ComboPage_Change,
  68     ComboPage_ChangeText,
  69     ComboPage_Delete,
  70     ComboPage_DeleteText,
  71     ComboPage_DeleteSel,
  72     ComboPage_SetValue,
  73     ComboPage_SetValueText,
  74     ComboPage_Combo,
  75     ComboPage_ContainerTests
  76 };
  77
  78 // kinds of comboboxes
  79 enum
  80 {
  81     ComboKind_Default,
  82     ComboKind_Simple,
  83     ComboKind_DropDown
  84 };
  85
  86 // ----------------------------------------------------------------------------
  87 // ComboboxWidgetsPage
  88 // ----------------------------------------------------------------------------
  89
  90 class ComboboxWidgetsPage : public ItemContainerWidgetsPage
  91 {
  92 public:
  93     ComboboxWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  94
  95     virtual wxControl *GetWidget() const { return m_combobox; }
  96     virtual wxTextEntryBase *GetTextEntry() const { return m_combobox; }
  97     virtual wxItemContainer* GetContainer() const { return m_combobox; }
  98     virtual void RecreateWidget() { CreateCombo(); }
  99
 100     // lazy creation of the content
 101     virtual void CreateContent();
 102
 103 protected:
 104     // event handlers
 105     void OnButtonReset(wxCommandEvent& event);
 106     void OnButtonChange(wxCommandEvent& event);
 107     void OnButtonDelete(wxCommandEvent& event);
 108     void OnButtonDeleteSel(wxCommandEvent& event);
 109     void OnButtonClear(wxCommandEvent& event);
 110     void OnButtonInsert(wxCommandEvent &event);
 111     void OnButtonAdd(wxCommandEvent& event);
 112     void OnButtonAddSeveral(wxCommandEvent& event);
 113     void OnButtonAddMany(wxCommandEvent& event);
 114     void OnButtonSetValue(wxCommandEvent& event);
 115     void OnButtonSetCurrent(wxCommandEvent& event);
 116
 117     void OnComboBox(wxCommandEvent& event);
 118     void OnComboText(wxCommandEvent& event);
 119
 120     void OnCheckOrRadioBox(wxCommandEvent& event);
 121
 122     void OnUpdateUIInsertionPointText(wxUpdateUIEvent& event);
 123
 124     void OnUpdateUIInsert(wxUpdateUIEvent& event);
 125     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
 126     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 127     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 128     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 129     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 130     void OnUpdateUISetCurrent(wxUpdateUIEvent& event);
 131
 132     // reset the combobox parameters
 133     void Reset();
 134
 135     // (re)create the combobox
 136     void CreateCombo();
 137
 138     // the controls
 139     // ------------
 140
 141     // the sel mode radiobox
 142     wxRadioBox *m_radioKind;
 143
 144     // the checkboxes for styles
 145     wxCheckBox *m_chkSort,
 146                *m_chkReadonly,
 147                *m_chkFilename;
 148
 149     // the combobox itself and the sizer it is in
 150     wxComboBox *m_combobox;
 151     wxSizer *m_sizerCombo;
 152
 153     // the text entries for "Add/change string" and "Delete" buttons
 154     wxTextCtrl *m_textInsert,
 155                *m_textAdd,
 156                *m_textChange,
 157                *m_textSetValue,
 158                *m_textDelete,
 159                *m_textCur;
 160
 161 private:
 162     DECLARE_EVENT_TABLE()
 163     DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage)
 164 };
 165
 166 // ----------------------------------------------------------------------------
 167 // event tables
 168 // ----------------------------------------------------------------------------
 169
 170 BEGIN_EVENT_TABLE(ComboboxWidgetsPage, WidgetsPage)
 171     EVT_BUTTON(ComboPage_Reset, ComboboxWidgetsPage::OnButtonReset)
 172     EVT_BUTTON(ComboPage_Change, ComboboxWidgetsPage::OnButtonChange)
 173     EVT_BUTTON(ComboPage_Delete, ComboboxWidgetsPage::OnButtonDelete)
 174     EVT_BUTTON(ComboPage_DeleteSel, ComboboxWidgetsPage::OnButtonDeleteSel)
 175     EVT_BUTTON(ComboPage_Clear, ComboboxWidgetsPage::OnButtonClear)
 176     EVT_BUTTON(ComboPage_Insert, ComboboxWidgetsPage::OnButtonInsert)
 177     EVT_BUTTON(ComboPage_Add, ComboboxWidgetsPage::OnButtonAdd)
 178     EVT_BUTTON(ComboPage_AddSeveral, ComboboxWidgetsPage::OnButtonAddSeveral)
 179     EVT_BUTTON(ComboPage_AddMany, ComboboxWidgetsPage::OnButtonAddMany)
 180     EVT_BUTTON(ComboPage_SetValue, ComboboxWidgetsPage::OnButtonSetValue)
 181     EVT_BUTTON(ComboPage_SetCurrent, ComboboxWidgetsPage::OnButtonSetCurrent)
 182     EVT_BUTTON(ComboPage_ContainerTests, ItemContainerWidgetsPage::OnButtonTestItemContainer)
 183
 184     EVT_TEXT_ENTER(ComboPage_InsertText, ComboboxWidgetsPage::OnButtonInsert)
 185     EVT_TEXT_ENTER(ComboPage_AddText, ComboboxWidgetsPage::OnButtonAdd)
 186     EVT_TEXT_ENTER(ComboPage_DeleteText, ComboboxWidgetsPage::OnButtonDelete)
 187
 188     EVT_UPDATE_UI(ComboPage_InsertionPointText, ComboboxWidgetsPage::OnUpdateUIInsertionPointText)
 189
 190     EVT_UPDATE_UI(ComboPage_Reset, ComboboxWidgetsPage::OnUpdateUIResetButton)
 191     EVT_UPDATE_UI(ComboPage_Insert, ComboboxWidgetsPage::OnUpdateUIInsert)
 192     EVT_UPDATE_UI(ComboPage_AddSeveral, ComboboxWidgetsPage::OnUpdateUIAddSeveral)
 193     EVT_UPDATE_UI(ComboPage_Clear, ComboboxWidgetsPage::OnUpdateUIClearButton)
 194     EVT_UPDATE_UI(ComboPage_DeleteText, ComboboxWidgetsPage::OnUpdateUIClearButton)
 195     EVT_UPDATE_UI(ComboPage_Delete, ComboboxWidgetsPage::OnUpdateUIDeleteButton)
 196     EVT_UPDATE_UI(ComboPage_Change, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 197     EVT_UPDATE_UI(ComboPage_ChangeText, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 198     EVT_UPDATE_UI(ComboPage_DeleteSel, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 199     EVT_UPDATE_UI(ComboPage_SetCurrent, ComboboxWidgetsPage::OnUpdateUISetCurrent)
 200
 201     EVT_COMBOBOX(ComboPage_Combo, ComboboxWidgetsPage::OnComboBox)
 202     EVT_TEXT(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 203     EVT_TEXT_ENTER(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 204
 205     EVT_CHECKBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 206     EVT_RADIOBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 207 END_EVENT_TABLE()
 208
 209 // ============================================================================
 210 // implementation
 211 // ============================================================================
 212
 213 #if defined(__WXUNIVERSAL__)
 214     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 215 #else
 216     #define FAMILY_CTRLS NATIVE_CTRLS
 217 #endif
 218
 219 IMPLEMENT_WIDGETS_PAGE(ComboboxWidgetsPage, _T("Combobox"),
 220                        FAMILY_CTRLS | WITH_ITEMS_CTRLS | COMBO_CTRLS
 221                        );
 222
 223 ComboboxWidgetsPage::ComboboxWidgetsPage(WidgetsBookCtrl *book,
 224                                          wxImageList *imaglist)
 225                   : ItemContainerWidgetsPage(book, imaglist, combobox_xpm)
 226 {
 227     // init everything
 228     m_chkSort =
 229     m_chkReadonly =
 230     m_chkFilename = (wxCheckBox *)NULL;
 231
 232     m_combobox = (wxComboBox *)NULL;
 233     m_sizerCombo = (wxSizer *)NULL;
 234 }
 235
 236 void ComboboxWidgetsPage::CreateContent()
 237 {
 238     /*
 239        What we create here is a frame having 3 panes: style pane is the
 240        leftmost one, in the middle the pane with buttons allowing to perform
 241        miscellaneous combobox operations and the pane containing the combobox
 242        itself to the right
 243     */
 244     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 245
 246     // left pane
 247     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 248
 249     // should be in sync with ComboKind_XXX values
 250     static const wxString kinds[] =
 251     {
 252         _T("default"),
 253         _T("simple"),
 254         _T("drop down"),
 255     };
 256
 257     m_radioKind = new wxRadioBox(this, wxID_ANY, _T("Combobox &kind:"),
 258                                  wxDefaultPosition, wxDefaultSize,
 259                                  WXSIZEOF(kinds), kinds,
 260                                  1, wxRA_SPECIFY_COLS);
 261
 262     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 263
 264     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items"));
 265     m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Read only"));
 266     m_chkFilename = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&File name"));
 267     m_chkFilename->Disable(); // not implemented yet
 268
 269     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 270     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 271
 272     wxButton *btn = new wxButton(this, ComboPage_Reset, _T("&Reset"));
 273     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 274
 275     // middle pane
 276     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 277         _T("&Change combobox contents"));
 278     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 279
 280     wxSizer *sizerRow;
 281
 282     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetCurrent,
 283                                             _T("Current &selection"),
 284                                             ComboPage_CurText,
 285                                             &m_textCur);
 286
 287     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 288
 289     wxTextCtrl *text;
 290     sizerRow = CreateSizerWithTextAndLabel(_T("Insertion Point"),
 291                                            ComboPage_InsertionPointText,
 292                                            &text);
 293     text->SetEditable(false);
 294
 295     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 296
 297     sizerRow = CreateSizerWithTextAndButton(ComboPage_Insert,
 298                                             _T("&Insert this string"),
 299                                             ComboPage_InsertText,
 300                                             &m_textInsert);
 301     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 302
 303     sizerRow = CreateSizerWithTextAndButton(ComboPage_Add,
 304                                             _T("&Add this string"),
 305                                             ComboPage_AddText,
 306                                             &m_textAdd);
 307     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 308
 309     btn = new wxButton(this, ComboPage_AddSeveral, _T("&Append a few strings"));
 310     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 311
 312     btn = new wxButton(this, ComboPage_AddMany, _T("Append &many strings"));
 313     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 314
 315     sizerRow = CreateSizerWithTextAndButton(ComboPage_Change,
 316                                             _T("C&hange current"),
 317                                             ComboPage_ChangeText,
 318                                             &m_textChange);
 319     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 320
 321     sizerRow = CreateSizerWithTextAndButton(ComboPage_Delete,
 322                                             _T("&Delete this item"),
 323                                             ComboPage_DeleteText,
 324                                             &m_textDelete);
 325     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 326
 327     btn = new wxButton(this, ComboPage_DeleteSel, _T("Delete &selection"));
 328     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 329
 330     btn = new wxButton(this, ComboPage_Clear, _T("&Clear"));
 331     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 332
 333     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetValue,
 334                                             _T("SetValue"),
 335                                             ComboPage_SetValueText,
 336                                             &m_textSetValue);
 337     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 338
 339     btn = new wxButton(this, ComboPage_ContainerTests, _T("Run &tests"));
 340     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 341
 342
 343
 344     // right pane
 345     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 346     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 347                                 wxDefaultPosition, wxDefaultSize,
 348                                 0, NULL,
 349                                 0);
 350     sizerRight->Add(m_combobox, 0, wxGROW | wxALL, 5);
 351     sizerRight->SetMinSize(150, 0);
 352     m_sizerCombo = sizerRight; // save it to modify it later
 353
 354     // the 3 panes panes compose the window
 355     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 356     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 357     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 358
 359     // final initializations
 360     Reset();
 361
 362     SetSizer(sizerTop);
 363 }
 364
 365 // ----------------------------------------------------------------------------
 366 // operations
 367 // ----------------------------------------------------------------------------
 368
 369 void ComboboxWidgetsPage::Reset()
 370 {
 371     m_chkSort->SetValue(false);
 372     m_chkReadonly->SetValue(false);
 373     m_chkFilename->SetValue(false);
 374 }
 375
 376 void ComboboxWidgetsPage::CreateCombo()
 377 {
 378     int flags = ms_defaultFlags;
 379
 380     if ( m_chkSort->GetValue() )
 381         flags |= wxCB_SORT;
 382     if ( m_chkReadonly->GetValue() )
 383         flags |= wxCB_READONLY;
 384
 385     switch ( m_radioKind->GetSelection() )
 386     {
 387         default:
 388             wxFAIL_MSG( _T("unknown combo kind") );
 389             // fall through
 390
 391         case ComboKind_Default:
 392             break;
 393
 394         case ComboKind_Simple:
 395             flags |= wxCB_SIMPLE;
 396             break;
 397
 398         case ComboKind_DropDown:
 399             flags = wxCB_DROPDOWN;
 400             break;
 401     }
 402
 403     wxArrayString items;
 404     if ( m_combobox )
 405     {
 406         unsigned int count = m_combobox->GetCount();
 407         for ( unsigned int n = 0; n < count; n++ )
 408         {
 409             items.Add(m_combobox->GetString(n));
 410         }
 411
 412         m_sizerCombo->Detach( m_combobox );
 413         delete m_combobox;
 414     }
 415
 416     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 417                                 wxDefaultPosition, wxDefaultSize,
 418                                 0, NULL,
 419                                 flags);
 420
 421 #if 0
 422     if ( m_chkFilename->GetValue() )
 423         ;
 424 #endif // TODO
 425
 426     unsigned int count = items.GetCount();
 427     for ( unsigned int n = 0; n < count; n++ )
 428     {
 429         m_combobox->Append(items[n]);
 430     }
 431
 432     m_sizerCombo->Add(m_combobox, 0, wxGROW | wxALL, 5);
 433     m_sizerCombo->Layout();
 434 }
 435
 436 // ----------------------------------------------------------------------------
 437 // event handlers
 438 // ----------------------------------------------------------------------------
 439
 440 void ComboboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 441 {
 442     Reset();
 443
 444     CreateCombo();
 445 }
 446
 447 void ComboboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 448 {
 449     int sel = m_combobox->GetSelection();
 450     if ( sel != wxNOT_FOUND )
 451     {
 452 #ifndef __WXGTK__
 453         m_combobox->SetString(sel, m_textChange->GetValue());
 454 #else
 455         wxLogMessage(_T("Not implemented in wxGTK"));
 456 #endif
 457     }
 458 }
 459
 460 void ComboboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 461 {
 462     unsigned long n;
 463     if ( !m_textDelete->GetValue().ToULong(&n) ||
 464             (n >= m_combobox->GetCount()) )
 465     {
 466         return;
 467     }
 468
 469     m_combobox->Delete(n);
 470 }
 471
 472 void ComboboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 473 {
 474     int sel = m_combobox->GetSelection();
 475     if ( sel != wxNOT_FOUND )
 476     {
 477         m_combobox->Delete(sel);
 478     }
 479 }
 480
 481 void ComboboxWidgetsPage::OnButtonSetValue(wxCommandEvent& WXUNUSED(event))
 482 {
 483     wxString value = m_textSetValue->GetValue();
 484     m_combobox->SetValue( value );
 485 }
 486
 487 void ComboboxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 488 {
 489     m_combobox->Clear();
 490 }
 491
 492 void ComboboxWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 493 {
 494     static unsigned int s_item = 0;
 495
 496     wxString s = m_textInsert->GetValue();
 497     if ( !m_textInsert->IsModified() )
 498     {
 499         // update the default string
 500         m_textInsert->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 501     }
 502
 503     if (m_combobox->GetSelection() >= 0)
 504         m_combobox->Insert(s, m_combobox->GetSelection());
 505 }
 506
 507 void ComboboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 508 {
 509     static unsigned int s_item = 0;
 510
 511     wxString s = m_textAdd->GetValue();
 512     if ( !m_textAdd->IsModified() )
 513     {
 514         // update the default string
 515         m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 516     }
 517
 518     m_combobox->Append(s);
 519 }
 520
 521 void ComboboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 522 {
 523     // "many" means 1000 here
 524     for ( unsigned int n = 0; n < 1000; n++ )
 525     {
 526         m_combobox->Append(wxString::Format(_T("item #%u"), n));
 527     }
 528 }
 529
 530 void ComboboxWidgetsPage::OnButtonSetCurrent(wxCommandEvent& WXUNUSED(event))
 531 {
 532     long n;
 533     if ( !m_textCur->GetValue().ToLong(&n) )
 534         return;
 535
 536     m_combobox->SetSelection(n);
 537 }
 538
 539 void ComboboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 540 {
 541     m_combobox->Append(_T("First"));
 542     m_combobox->Append(_T("another one"));
 543     m_combobox->Append(_T("and the last (very very very very very very very very very very long) one"));
 544 }
 545
 546 void ComboboxWidgetsPage::OnUpdateUIInsertionPointText(wxUpdateUIEvent& event)
 547 {
 548     if (m_combobox)
 549         event.SetText( wxString::Format(_T("%ld"), m_combobox->GetInsertionPoint()) );
 550 }
 551
 552 void ComboboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 553 {
 554     event.Enable( m_chkSort->GetValue() ||
 555                     m_chkReadonly->GetValue() ||
 556                         m_chkFilename->GetValue() );
 557 }
 558
 559 void ComboboxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
 560 {
 561     if (m_combobox)
 562     {
 563         bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT) &&
 564                        (m_combobox->GetSelection() >= 0);
 565
 566         event.Enable(enable);
 567     }
 568 }
 569
 570 void ComboboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 571 {
 572     if (m_combobox)
 573     {
 574       unsigned long n;
 575       event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 576         (n < (unsigned)m_combobox->GetCount()));
 577     }
 578 }
 579
 580 void ComboboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 581 {
 582     if (m_combobox)
 583         event.Enable(m_combobox->GetSelection() != wxNOT_FOUND);
 584 }
 585
 586 void ComboboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 587 {
 588     if (m_combobox)
 589         event.Enable(m_combobox->GetCount() != 0);
 590 }
 591
 592 void ComboboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 593 {
 594     if (m_combobox)
 595         event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
 596 }
 597
 598 void ComboboxWidgetsPage::OnUpdateUISetCurrent(wxUpdateUIEvent& event)
 599 {
 600     long n;
 601     event.Enable( m_textCur->GetValue().ToLong(&n) &&
 602                     (n == wxNOT_FOUND ||
 603                         (n >= 0 && (unsigned)n < m_combobox->GetCount())) );
 604 }
 605
 606 void ComboboxWidgetsPage::OnComboText(wxCommandEvent& event)
 607 {
 608     if (!m_combobox)
 609         return;
 610
 611     wxString s = event.GetString();
 612
 613     wxASSERT_MSG( s == m_combobox->GetValue(),
 614                   _T("event and combobox values should be the same") );
 615
 616     if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
 617         wxLogMessage(_T("Combobox enter pressed (now '%s')"), s.c_str());
 618     else
 619         wxLogMessage(_T("Combobox text changed (now '%s')"), s.c_str());
 620 }
 621
 622 void ComboboxWidgetsPage::OnComboBox(wxCommandEvent& event)
 623 {
 624     long sel = event.GetInt();
 625     const wxString selstr = wxString::Format(_T("%ld"), sel);
 626     m_textDelete->SetValue(selstr);
 627     m_textCur->SetValue(selstr);
 628
 629     wxLogMessage(_T("Combobox item %ld selected"), sel);
 630
 631     wxLogMessage(_T("Combobox GetValue(): %s"), m_combobox->GetValue().c_str() );
 632 }
 633
 634 void ComboboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 635 {
 636     CreateCombo();
 637 }
 638
 639 #endif //wxUSE_COMBOBOX
 640
 641 #endif