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 #include "icons/combobox.xpm"
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // control ids
  53 enum
  54 {
  55     ComboPage_Reset = wxID_HIGHEST,
  56     ComboPage_Popup,
  57     ComboPage_Dismiss,
  58     ComboPage_SetCurrent,
  59     ComboPage_CurText,
  60     ComboPage_InsertionPointText,
  61     ComboPage_Insert,
  62     ComboPage_InsertText,
  63     ComboPage_Add,
  64     ComboPage_AddText,
  65     ComboPage_AddSeveral,
  66     ComboPage_AddMany,
  67     ComboPage_Clear,
  68     ComboPage_Change,
  69     ComboPage_ChangeText,
  70     ComboPage_Delete,
  71     ComboPage_DeleteText,
  72     ComboPage_DeleteSel,
  73     ComboPage_SetValue,
  74     ComboPage_SetValueText,
  75     ComboPage_Combo,
  76     ComboPage_ContainerTests
  77 };
  78
  79 // kinds of comboboxes
  80 enum
  81 {
  82     ComboKind_Default,
  83     ComboKind_Simple,
  84     ComboKind_DropDown
  85 };
  86
  87 // ----------------------------------------------------------------------------
  88 // ComboboxWidgetsPage
  89 // ----------------------------------------------------------------------------
  90
  91 class ComboboxWidgetsPage : public ItemContainerWidgetsPage
  92 {
  93 public:
  94     ComboboxWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  95
  96     virtual wxControl *GetWidget() const { return m_combobox; }
  97     virtual wxTextEntryBase *GetTextEntry() const { return m_combobox; }
  98     virtual wxItemContainer* GetContainer() const { return m_combobox; }
  99     virtual void RecreateWidget() { CreateCombo(); }
 100
 101     // lazy creation of the content
 102     virtual void CreateContent();
 103
 104 protected:
 105     // event handlers
 106     void OnButtonReset(wxCommandEvent& event);
 107     void OnButtonPopup(wxCommandEvent&) { m_combobox->Popup(); }
 108     void OnButtonDismiss(wxCommandEvent&) { m_combobox->Dismiss(); }
 109     void OnButtonChange(wxCommandEvent& event);
 110     void OnButtonDelete(wxCommandEvent& event);
 111     void OnButtonDeleteSel(wxCommandEvent& event);
 112     void OnButtonClear(wxCommandEvent& event);
 113     void OnButtonInsert(wxCommandEvent &event);
 114     void OnButtonAdd(wxCommandEvent& event);
 115     void OnButtonAddSeveral(wxCommandEvent& event);
 116     void OnButtonAddMany(wxCommandEvent& event);
 117     void OnButtonSetValue(wxCommandEvent& event);
 118     void OnButtonSetCurrent(wxCommandEvent& event);
 119
 120     void OnDropdown(wxCommandEvent& event);
 121     void OnCloseup(wxCommandEvent& event);
 122     void OnComboBox(wxCommandEvent& event);
 123     void OnComboText(wxCommandEvent& event);
 124
 125     void OnCheckOrRadioBox(wxCommandEvent& event);
 126
 127     void OnUpdateUIInsertionPointText(wxUpdateUIEvent& event);
 128
 129     void OnUpdateUIInsert(wxUpdateUIEvent& event);
 130     void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
 131     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 132     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 133     void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
 134     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 135     void OnUpdateUISetCurrent(wxUpdateUIEvent& event);
 136
 137     // reset the combobox parameters
 138     void Reset();
 139
 140     // (re)create the combobox
 141     void CreateCombo();
 142
 143     // the controls
 144     // ------------
 145
 146     // the sel mode radiobox
 147     wxRadioBox *m_radioKind;
 148
 149     // the checkboxes for styles
 150     wxCheckBox *m_chkSort,
 151                *m_chkReadonly,
 152                *m_chkFilename;
 153
 154     // the combobox itself and the sizer it is in
 155     wxComboBox *m_combobox;
 156     wxSizer *m_sizerCombo;
 157
 158     // the text entries for "Add/change string" and "Delete" buttons
 159     wxTextCtrl *m_textInsert,
 160                *m_textAdd,
 161                *m_textChange,
 162                *m_textSetValue,
 163                *m_textDelete,
 164                *m_textCur;
 165
 166 private:
 167     DECLARE_EVENT_TABLE()
 168     DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage)
 169 };
 170
 171 // ----------------------------------------------------------------------------
 172 // event tables
 173 // ----------------------------------------------------------------------------
 174
 175 BEGIN_EVENT_TABLE(ComboboxWidgetsPage, WidgetsPage)
 176     EVT_BUTTON(ComboPage_Reset, ComboboxWidgetsPage::OnButtonReset)
 177     EVT_BUTTON(ComboPage_Popup, ComboboxWidgetsPage::OnButtonPopup)
 178     EVT_BUTTON(ComboPage_Dismiss, ComboboxWidgetsPage::OnButtonDismiss)
 179     EVT_BUTTON(ComboPage_Change, ComboboxWidgetsPage::OnButtonChange)
 180     EVT_BUTTON(ComboPage_Delete, ComboboxWidgetsPage::OnButtonDelete)
 181     EVT_BUTTON(ComboPage_DeleteSel, ComboboxWidgetsPage::OnButtonDeleteSel)
 182     EVT_BUTTON(ComboPage_Clear, ComboboxWidgetsPage::OnButtonClear)
 183     EVT_BUTTON(ComboPage_Insert, ComboboxWidgetsPage::OnButtonInsert)
 184     EVT_BUTTON(ComboPage_Add, ComboboxWidgetsPage::OnButtonAdd)
 185     EVT_BUTTON(ComboPage_AddSeveral, ComboboxWidgetsPage::OnButtonAddSeveral)
 186     EVT_BUTTON(ComboPage_AddMany, ComboboxWidgetsPage::OnButtonAddMany)
 187     EVT_BUTTON(ComboPage_SetValue, ComboboxWidgetsPage::OnButtonSetValue)
 188     EVT_BUTTON(ComboPage_SetCurrent, ComboboxWidgetsPage::OnButtonSetCurrent)
 189     EVT_BUTTON(ComboPage_ContainerTests, ItemContainerWidgetsPage::OnButtonTestItemContainer)
 190
 191     EVT_TEXT_ENTER(ComboPage_InsertText, ComboboxWidgetsPage::OnButtonInsert)
 192     EVT_TEXT_ENTER(ComboPage_AddText, ComboboxWidgetsPage::OnButtonAdd)
 193     EVT_TEXT_ENTER(ComboPage_DeleteText, ComboboxWidgetsPage::OnButtonDelete)
 194
 195     EVT_UPDATE_UI(ComboPage_InsertionPointText, ComboboxWidgetsPage::OnUpdateUIInsertionPointText)
 196
 197     EVT_UPDATE_UI(ComboPage_Reset, ComboboxWidgetsPage::OnUpdateUIResetButton)
 198     EVT_UPDATE_UI(ComboPage_Insert, ComboboxWidgetsPage::OnUpdateUIInsert)
 199     EVT_UPDATE_UI(ComboPage_AddSeveral, ComboboxWidgetsPage::OnUpdateUIAddSeveral)
 200     EVT_UPDATE_UI(ComboPage_Clear, ComboboxWidgetsPage::OnUpdateUIClearButton)
 201     EVT_UPDATE_UI(ComboPage_DeleteText, ComboboxWidgetsPage::OnUpdateUIClearButton)
 202     EVT_UPDATE_UI(ComboPage_Delete, ComboboxWidgetsPage::OnUpdateUIDeleteButton)
 203     EVT_UPDATE_UI(ComboPage_Change, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 204     EVT_UPDATE_UI(ComboPage_ChangeText, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 205     EVT_UPDATE_UI(ComboPage_DeleteSel, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
 206     EVT_UPDATE_UI(ComboPage_SetCurrent, ComboboxWidgetsPage::OnUpdateUISetCurrent)
 207
 208     EVT_COMBOBOX(ComboPage_Combo, ComboboxWidgetsPage::OnComboBox)
 209     EVT_COMBOBOX_DROPDOWN(ComboPage_Combo, ComboboxWidgetsPage::OnDropdown)
 210     EVT_COMBOBOX_CLOSEUP(ComboPage_Combo, ComboboxWidgetsPage::OnCloseup)
 211     EVT_TEXT(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 212     EVT_TEXT_ENTER(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
 213
 214     EVT_CHECKBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 215     EVT_RADIOBOX(wxID_ANY, ComboboxWidgetsPage::OnCheckOrRadioBox)
 216 END_EVENT_TABLE()
 217
 218 // ============================================================================
 219 // implementation
 220 // ============================================================================
 221
 222 #if defined(__WXUNIVERSAL__)
 223     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 224 #else
 225     #define FAMILY_CTRLS NATIVE_CTRLS
 226 #endif
 227
 228 IMPLEMENT_WIDGETS_PAGE(ComboboxWidgetsPage, wxT("Combobox"),
 229                        FAMILY_CTRLS | WITH_ITEMS_CTRLS | COMBO_CTRLS
 230                        );
 231
 232 ComboboxWidgetsPage::ComboboxWidgetsPage(WidgetsBookCtrl *book,
 233                                          wxImageList *imaglist)
 234                   : ItemContainerWidgetsPage(book, imaglist, combobox_xpm)
 235 {
 236     // init everything
 237     m_chkSort =
 238     m_chkReadonly =
 239     m_chkFilename = (wxCheckBox *)NULL;
 240
 241     m_combobox = (wxComboBox *)NULL;
 242     m_sizerCombo = (wxSizer *)NULL;
 243 }
 244
 245 void ComboboxWidgetsPage::CreateContent()
 246 {
 247     /*
 248        What we create here is a frame having 3 panes: style pane is the
 249        leftmost one, in the middle the pane with buttons allowing to perform
 250        miscellaneous combobox operations and the pane containing the combobox
 251        itself to the right
 252     */
 253     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 254
 255     // upper left pane
 256
 257     // should be in sync with ComboKind_XXX values
 258     static const wxString kinds[] =
 259     {
 260         wxT("default"),
 261         wxT("simple"),
 262         wxT("drop down"),
 263     };
 264
 265     m_radioKind = new wxRadioBox(this, wxID_ANY, wxT("Combobox &kind:"),
 266                                  wxDefaultPosition, wxDefaultSize,
 267                                  WXSIZEOF(kinds), kinds,
 268                                  1, wxRA_SPECIFY_COLS);
 269
 270     wxSizer *sizerLeftTop = new wxStaticBoxSizer(wxVERTICAL, this, "&Set style");
 271
 272     m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&Sort items"));
 273     m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&Read only"));
 274     m_chkFilename = CreateCheckBoxAndAddToSizer(sizerLeftTop, wxT("&File name"));
 275     m_chkFilename->Disable(); // not implemented yet
 276
 277     sizerLeftTop->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 278     sizerLeftTop->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 279
 280     wxButton *btn = new wxButton(this, ComboPage_Reset, wxT("&Reset"));
 281     sizerLeftTop->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 282
 283     // lower left pane
 284     wxSizer *sizerLeftBottom = new wxStaticBoxSizer(wxVERTICAL, this, "&Popup");
 285     sizerLeftBottom->Add(new wxButton(this, ComboPage_Popup, "&Show"),
 286                          wxSizerFlags().Border().Centre());
 287     sizerLeftBottom->Add(new wxButton(this, ComboPage_Dismiss, "&Hide"),
 288                          wxSizerFlags().Border().Centre());
 289
 290
 291     wxSizer *sizerLeft = new wxBoxSizer(wxVERTICAL);
 292     sizerLeft->Add(sizerLeftTop);
 293     sizerLeft->AddSpacer(10);
 294     sizerLeft->Add(sizerLeftBottom);
 295
 296     // middle pane
 297     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 298         wxT("&Change combobox contents"));
 299     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 300
 301     wxSizer *sizerRow;
 302
 303     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetCurrent,
 304                                             wxT("Current &selection"),
 305                                             ComboPage_CurText,
 306                                             &m_textCur);
 307
 308     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 309
 310     wxTextCtrl *text;
 311     sizerRow = CreateSizerWithTextAndLabel(wxT("Insertion Point"),
 312                                            ComboPage_InsertionPointText,
 313                                            &text);
 314     text->SetEditable(false);
 315
 316     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 317
 318     sizerRow = CreateSizerWithTextAndButton(ComboPage_Insert,
 319                                             wxT("&Insert this string"),
 320                                             ComboPage_InsertText,
 321                                             &m_textInsert);
 322     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 323
 324     sizerRow = CreateSizerWithTextAndButton(ComboPage_Add,
 325                                             wxT("&Add this string"),
 326                                             ComboPage_AddText,
 327                                             &m_textAdd);
 328     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 329
 330     btn = new wxButton(this, ComboPage_AddSeveral, wxT("&Append a few strings"));
 331     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 332
 333     btn = new wxButton(this, ComboPage_AddMany, wxT("Append &many strings"));
 334     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 335
 336     sizerRow = CreateSizerWithTextAndButton(ComboPage_Change,
 337                                             wxT("C&hange current"),
 338                                             ComboPage_ChangeText,
 339                                             &m_textChange);
 340     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 341
 342     sizerRow = CreateSizerWithTextAndButton(ComboPage_Delete,
 343                                             wxT("&Delete this item"),
 344                                             ComboPage_DeleteText,
 345                                             &m_textDelete);
 346     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 347
 348     btn = new wxButton(this, ComboPage_DeleteSel, wxT("Delete &selection"));
 349     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 350
 351     btn = new wxButton(this, ComboPage_Clear, wxT("&Clear"));
 352     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 353
 354     sizerRow = CreateSizerWithTextAndButton(ComboPage_SetValue,
 355                                             wxT("SetValue"),
 356                                             ComboPage_SetValueText,
 357                                             &m_textSetValue);
 358     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 359
 360     btn = new wxButton(this, ComboPage_ContainerTests, wxT("Run &tests"));
 361     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 362
 363
 364
 365     // right pane
 366     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 367     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 368                                 wxDefaultPosition, wxDefaultSize,
 369                                 0, NULL,
 370                                 0);
 371     sizerRight->Add(m_combobox, 0, wxGROW | wxALL, 5);
 372     sizerRight->SetMinSize(150, 0);
 373     m_sizerCombo = sizerRight; // save it to modify it later
 374
 375     // the 3 panes panes compose the window
 376     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 377     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 378     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 379
 380     // final initializations
 381     Reset();
 382
 383     SetSizer(sizerTop);
 384 }
 385
 386 // ----------------------------------------------------------------------------
 387 // operations
 388 // ----------------------------------------------------------------------------
 389
 390 void ComboboxWidgetsPage::Reset()
 391 {
 392     m_chkSort->SetValue(false);
 393     m_chkReadonly->SetValue(false);
 394     m_chkFilename->SetValue(false);
 395 }
 396
 397 void ComboboxWidgetsPage::CreateCombo()
 398 {
 399     int flags = ms_defaultFlags;
 400
 401     if ( m_chkSort->GetValue() )
 402         flags |= wxCB_SORT;
 403     if ( m_chkReadonly->GetValue() )
 404         flags |= wxCB_READONLY;
 405
 406     switch ( m_radioKind->GetSelection() )
 407     {
 408         default:
 409             wxFAIL_MSG( wxT("unknown combo kind") );
 410             // fall through
 411
 412         case ComboKind_Default:
 413             break;
 414
 415         case ComboKind_Simple:
 416             flags |= wxCB_SIMPLE;
 417             break;
 418
 419         case ComboKind_DropDown:
 420             flags = wxCB_DROPDOWN;
 421             break;
 422     }
 423
 424     wxArrayString items;
 425     if ( m_combobox )
 426     {
 427         unsigned int count = m_combobox->GetCount();
 428         for ( unsigned int n = 0; n < count; n++ )
 429         {
 430             items.Add(m_combobox->GetString(n));
 431         }
 432
 433         m_sizerCombo->Detach( m_combobox );
 434         delete m_combobox;
 435     }
 436
 437     m_combobox = new wxComboBox(this, ComboPage_Combo, wxEmptyString,
 438                                 wxDefaultPosition, wxDefaultSize,
 439                                 0, NULL,
 440                                 flags);
 441
 442 #if 0
 443     if ( m_chkFilename->GetValue() )
 444         ;
 445 #endif // TODO
 446
 447     unsigned int count = items.GetCount();
 448     for ( unsigned int n = 0; n < count; n++ )
 449     {
 450         m_combobox->Append(items[n]);
 451     }
 452
 453     m_sizerCombo->Add(m_combobox, 0, wxGROW | wxALL, 5);
 454     m_sizerCombo->Layout();
 455 }
 456
 457 // ----------------------------------------------------------------------------
 458 // event handlers
 459 // ----------------------------------------------------------------------------
 460
 461 void ComboboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 462 {
 463     Reset();
 464
 465     CreateCombo();
 466 }
 467
 468 void ComboboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 469 {
 470     int sel = m_combobox->GetSelection();
 471     if ( sel != wxNOT_FOUND )
 472     {
 473 #ifndef __WXGTK__
 474         m_combobox->SetString(sel, m_textChange->GetValue());
 475 #else
 476         wxLogMessage(wxT("Not implemented in wxGTK"));
 477 #endif
 478     }
 479 }
 480
 481 void ComboboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 482 {
 483     unsigned long n;
 484     if ( !m_textDelete->GetValue().ToULong(&n) ||
 485             (n >= m_combobox->GetCount()) )
 486     {
 487         return;
 488     }
 489
 490     m_combobox->Delete(n);
 491 }
 492
 493 void ComboboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 494 {
 495     int sel = m_combobox->GetSelection();
 496     if ( sel != wxNOT_FOUND )
 497     {
 498         m_combobox->Delete(sel);
 499     }
 500 }
 501
 502 void ComboboxWidgetsPage::OnButtonSetValue(wxCommandEvent& WXUNUSED(event))
 503 {
 504     wxString value = m_textSetValue->GetValue();
 505     m_combobox->SetValue( value );
 506 }
 507
 508 void ComboboxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 509 {
 510     m_combobox->Clear();
 511 }
 512
 513 void ComboboxWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 514 {
 515     static unsigned int s_item = 0;
 516
 517     wxString s = m_textInsert->GetValue();
 518     if ( !m_textInsert->IsModified() )
 519     {
 520         // update the default string
 521         m_textInsert->SetValue(wxString::Format(wxT("test item %u"), ++s_item));
 522     }
 523
 524     if (m_combobox->GetSelection() >= 0)
 525         m_combobox->Insert(s, m_combobox->GetSelection());
 526 }
 527
 528 void ComboboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event))
 529 {
 530     static unsigned int s_item = 0;
 531
 532     wxString s = m_textAdd->GetValue();
 533     if ( !m_textAdd->IsModified() )
 534     {
 535         // update the default string
 536         m_textAdd->SetValue(wxString::Format(wxT("test item %u"), ++s_item));
 537     }
 538
 539     m_combobox->Append(s);
 540 }
 541
 542 void ComboboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 543 {
 544     // "many" means 1000 here
 545     for ( unsigned int n = 0; n < 1000; n++ )
 546     {
 547         m_combobox->Append(wxString::Format(wxT("item #%u"), n));
 548     }
 549 }
 550
 551 void ComboboxWidgetsPage::OnButtonSetCurrent(wxCommandEvent& WXUNUSED(event))
 552 {
 553     long n;
 554     if ( !m_textCur->GetValue().ToLong(&n) )
 555         return;
 556
 557     m_combobox->SetSelection(n);
 558 }
 559
 560 void ComboboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 561 {
 562     m_combobox->Append(wxT("First"));
 563     m_combobox->Append(wxT("another one"));
 564     m_combobox->Append(wxT("and the last (very very very very very very very very very very long) one"));
 565 }
 566
 567 void ComboboxWidgetsPage::OnUpdateUIInsertionPointText(wxUpdateUIEvent& event)
 568 {
 569     if (m_combobox)
 570         event.SetText( wxString::Format(wxT("%ld"), m_combobox->GetInsertionPoint()) );
 571 }
 572
 573 void ComboboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 574 {
 575     event.Enable( m_chkSort->GetValue() ||
 576                     m_chkReadonly->GetValue() ||
 577                         m_chkFilename->GetValue() );
 578 }
 579
 580 void ComboboxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
 581 {
 582     if (m_combobox)
 583     {
 584         bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT) &&
 585                        (m_combobox->GetSelection() >= 0);
 586
 587         event.Enable(enable);
 588     }
 589 }
 590
 591 void ComboboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 592 {
 593     if (m_combobox)
 594     {
 595       unsigned long n;
 596       event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 597         (n < (unsigned)m_combobox->GetCount()));
 598     }
 599 }
 600
 601 void ComboboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 602 {
 603     if (m_combobox)
 604         event.Enable(m_combobox->GetSelection() != wxNOT_FOUND);
 605 }
 606
 607 void ComboboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 608 {
 609     if (m_combobox)
 610         event.Enable(m_combobox->GetCount() != 0);
 611 }
 612
 613 void ComboboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 614 {
 615     if (m_combobox)
 616         event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
 617 }
 618
 619 void ComboboxWidgetsPage::OnUpdateUISetCurrent(wxUpdateUIEvent& event)
 620 {
 621     long n;
 622     event.Enable( m_textCur->GetValue().ToLong(&n) &&
 623                     (n == wxNOT_FOUND ||
 624                         (n >= 0 && (unsigned)n < m_combobox->GetCount())) );
 625 }
 626
 627 void ComboboxWidgetsPage::OnComboText(wxCommandEvent& event)
 628 {
 629     if (!m_combobox)
 630         return;
 631
 632     wxString s = event.GetString();
 633
 634     wxASSERT_MSG( s == m_combobox->GetValue(),
 635                   wxT("event and combobox values should be the same") );
 636
 637     if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
 638     {
 639         wxLogMessage(wxT("Combobox enter pressed (now '%s')"), s.c_str());
 640     }
 641     else
 642     {
 643         wxLogMessage(wxT("Combobox text changed (now '%s')"), s.c_str());
 644     }
 645 }
 646
 647 void ComboboxWidgetsPage::OnComboBox(wxCommandEvent& event)
 648 {
 649     long sel = event.GetInt();
 650     const wxString selstr = wxString::Format(wxT("%ld"), sel);
 651     m_textDelete->SetValue(selstr);
 652     m_textCur->SetValue(selstr);
 653
 654     wxLogMessage(wxT("Combobox item %ld selected"), sel);
 655
 656     wxLogMessage(wxT("Combobox GetValue(): %s"), m_combobox->GetValue().c_str() );
 657 }
 658
 659 void ComboboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 660 {
 661     CreateCombo();
 662 }
 663
 664 void ComboboxWidgetsPage::OnDropdown(wxCommandEvent& WXUNUSED(event))
 665 {
 666     wxLogMessage(wxT("Combobox dropped down"));
 667 }
 668
 669 void ComboboxWidgetsPage::OnCloseup(wxCommandEvent& WXUNUSED(event))
 670 {
 671     wxLogMessage(wxT("Combobox closed up"));
 672 }
 673
 674 #endif // wxUSE_COMBOBOX