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