src/osx/carbon/combobxc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/combobxc.cpp
   3 // Purpose:     wxComboBox class using HIView ComboBox
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/combobox.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/button.h"
  18     #include "wx/menu.h"
  19 #endif
  20
  21 #include "wx/osx/uma.h"
  22 #if TARGET_API_MAC_OSX
  23 #ifndef __HIVIEW__
  24     #include <HIToolbox/HIView.h>
  25 #endif
  26 #endif
  27
  28 #if TARGET_API_MAC_OSX
  29 #define USE_HICOMBOBOX 1 //use hi combobox define
  30 #else
  31 #define USE_HICOMBOBOX 0
  32 #endif
  33
  34 static int nextPopUpMenuId = 1000;
  35 MenuHandle NewUniqueMenu()
  36 {
  37   MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" );
  38   nextPopUpMenuId++;
  39   return handle;
  40 }
  41
  42 #if USE_HICOMBOBOX
  43 static const EventTypeSpec eventList[] =
  44 {
  45     { kEventClassTextField , kEventTextAccepted } ,
  46 };
  47
  48 static pascal OSStatus wxMacComboBoxEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
  49 {
  50     OSStatus result = eventNotHandledErr;
  51     wxComboBox* cb = (wxComboBox*) data;
  52
  53     wxMacCarbonEvent cEvent( event );
  54
  55     switch( cEvent.GetClass() )
  56     {
  57         case kEventClassTextField :
  58             switch( cEvent.GetKind() )
  59             {
  60                 case kEventTextAccepted :
  61                     {
  62                         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, cb->GetId() );
  63                         event.SetInt( cb->GetSelection() );
  64                         event.SetString( cb->GetStringSelection() );
  65                         event.SetEventObject( cb );
  66                         cb->HandleWindowEvent( event );
  67                     }
  68                     break;
  69                 default :
  70                     break;
  71             }
  72             break;
  73         default :
  74             break;
  75     }
  76
  77
  78     return result;
  79 }
  80
  81 DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacComboBoxEventHandler )
  82
  83 #endif
  84
  85 // ----------------------------------------------------------------------------
  86 // constants
  87 // ----------------------------------------------------------------------------
  88
  89 // the margin between the text control and the choice
  90 static const wxCoord MARGIN = 2;
  91 #if TARGET_API_MAC_OSX
  92 static const int    POPUPWIDTH = 24;
  93 #else
  94 static const int    POPUPWIDTH = 18;
  95 #endif
  96 static const int    POPUPHEIGHT = 23;
  97
  98 // ----------------------------------------------------------------------------
  99 // wxComboBoxText: text control forwards events to combobox
 100 // ----------------------------------------------------------------------------
 101
 102 class wxComboBoxText : public wxTextCtrl
 103 {
 104 public:
 105     wxComboBoxText( wxComboBox * cb )
 106         : wxTextCtrl( cb , 1 )
 107     {
 108         m_cb = cb;
 109     }
 110
 111 protected:
 112     void OnChar( wxKeyEvent& event )
 113     {
 114         if ( event.GetKeyCode() == WXK_RETURN )
 115         {
 116             wxString value = GetValue();
 117
 118             if ( m_cb->GetCount() == 0 )
 119             {
 120                 // make Enter generate "selected" event if there is only one item
 121                 // in the combobox - without it, it's impossible to select it at
 122                 // all!
 123                 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 124                 event.SetInt( 0 );
 125                 event.SetString( value );
 126                 event.SetEventObject( m_cb );
 127                 m_cb->HandleWindowEvent( event );
 128             }
 129             else
 130             {
 131                 // add the item to the list if it's not there yet
 132                 if ( m_cb->FindString(value) == wxNOT_FOUND )
 133                 {
 134                     m_cb->Append(value);
 135                     m_cb->SetStringSelection(value);
 136
 137                     // and generate the selected event for it
 138                     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 139                     event.SetInt( m_cb->GetCount() - 1 );
 140                     event.SetString( value );
 141                     event.SetEventObject( m_cb );
 142                     m_cb->HandleWindowEvent( event );
 143                 }
 144
 145                 // This will invoke the dialog default action, such
 146                 // as the clicking the default button.
 147
 148                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 149                 if ( tlw && tlw->GetDefaultItem() )
 150                 {
 151                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 152                     if ( def && def->IsEnabled() )
 153                     {
 154                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 155                         event.SetEventObject(def);
 156                         def->Command(event);
 157                         return;
 158                     }
 159                 }
 160
 161                 return;
 162             }
 163         }
 164
 165         event.Skip();
 166     }
 167 private:
 168     wxComboBox *m_cb;
 169
 170     DECLARE_EVENT_TABLE()
 171 };
 172
 173 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
 174     EVT_CHAR( wxComboBoxText::OnChar)
 175 END_EVENT_TABLE()
 176
 177 class wxComboBoxChoice : public wxChoice
 178 {
 179 public:
 180     wxComboBoxChoice(wxComboBox *cb, int style)
 181         : wxChoice( cb , 1 )
 182     {
 183         m_cb = cb;
 184     }
 185
 186 protected:
 187     void OnChoice( wxCommandEvent& e )
 188     {
 189         wxString    s = e.GetString();
 190
 191         m_cb->DelegateChoice( s );
 192         wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
 193         event2.SetInt(m_cb->GetSelection());
 194         event2.SetEventObject(m_cb);
 195         event2.SetString(m_cb->GetStringSelection());
 196         m_cb->ProcessCommand(event2);
 197     }
 198     virtual wxSize DoGetBestSize() const
 199     {
 200         wxSize sz = wxChoice::DoGetBestSize();
 201         sz.x = POPUPWIDTH;
 202         return sz;
 203     }
 204
 205 private:
 206     wxComboBox *m_cb;
 207
 208     DECLARE_EVENT_TABLE()
 209 };
 210
 211 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
 212     EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
 213 END_EVENT_TABLE()
 214
 215 wxComboBox::~wxComboBox()
 216 {
 217     // delete the controls now, don't leave them alive even though they would
 218     // still be eventually deleted by our parent - but it will be too late, the
 219     // user code expects them to be gone now
 220     wxDELETE( m_text );
 221     wxDELETE( m_choice );
 222 }
 223
 224
 225 // ----------------------------------------------------------------------------
 226 // geometry
 227 // ----------------------------------------------------------------------------
 228
 229 wxSize wxComboBox::DoGetBestSize() const
 230 {
 231 #if USE_HICOMBOBOX
 232     return wxControl::DoGetBestSize();
 233 #else
 234     wxSize size = m_choice->GetBestSize();
 235
 236     if ( m_text != NULL )
 237     {
 238         wxSize  sizeText = m_text->GetBestSize();
 239
 240         size.x = POPUPWIDTH + sizeText.x + MARGIN;
 241     }
 242
 243     return size;
 244 #endif
 245 }
 246
 247 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
 248 #if USE_HICOMBOBOX
 249     wxControl::DoMoveWindow(x, y, width, height);
 250 #else
 251     height = POPUPHEIGHT;
 252
 253     wxControl::DoMoveWindow(x, y, width, height);
 254
 255     if ( m_text == NULL )
 256     {
 257         // we might not be fully constructed yet, therefore watch out...
 258         if ( m_choice )
 259             m_choice->SetSize(0, 0 , width, wxDefaultCoord);
 260     }
 261     else
 262     {
 263         wxCoord wText = width - POPUPWIDTH - MARGIN;
 264         m_text->SetSize(0, 0, wText, height);
 265         m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, wxDefaultCoord);
 266     }
 267 #endif
 268 }
 269
 270
 271
 272 // ----------------------------------------------------------------------------
 273 // operations forwarded to the subcontrols
 274 // ----------------------------------------------------------------------------
 275
 276 bool wxComboBox::Enable(bool enable)
 277 {
 278     if ( !wxControl::Enable(enable) )
 279         return false;
 280
 281     return true;
 282 }
 283
 284 bool wxComboBox::Show(bool show)
 285 {
 286     if ( !wxControl::Show(show) )
 287         return false;
 288
 289     return true;
 290 }
 291
 292 void wxComboBox::SetFocus()
 293 {
 294 #if USE_HICOMBOBOX
 295     wxControl::SetFocus();
 296 #else
 297     if ( m_text != NULL) {
 298         m_text->SetFocus();
 299     }
 300 #endif
 301 }
 302
 303
 304 void wxComboBox::DelegateTextChanged( const wxString& value )
 305 {
 306     SetStringSelection( value );
 307 }
 308
 309
 310 void wxComboBox::DelegateChoice( const wxString& value )
 311 {
 312     SetStringSelection( value );
 313 }
 314
 315
 316 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 317            const wxString& value,
 318            const wxPoint& pos,
 319            const wxSize& size,
 320            const wxArrayString& choices,
 321            long style,
 322            const wxValidator& validator,
 323            const wxString& name)
 324 {
 325     wxCArrayString chs( choices );
 326
 327     return Create( parent, id, value, pos, size, chs.GetCount(),
 328                    chs.GetStrings(), style, validator, name );
 329 }
 330
 331
 332 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
 333            const wxString& value,
 334            const wxPoint& pos,
 335            const wxSize& size,
 336            int n, const wxString choices[],
 337            long style,
 338            const wxValidator& validator,
 339            const wxString& name)
 340 {
 341     m_text = NULL;
 342     m_choice = NULL;
 343 #if USE_HICOMBOBOX
 344     m_macIsUserPane = false;
 345 #endif
 346     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
 347                             wxDefaultValidator, name) )
 348     {
 349         return false;
 350     }
 351 #if USE_HICOMBOBOX
 352     Rect bounds = wxMacGetBoundsForControl( this , pos , size );
 353     HIRect hiRect;
 354
 355     hiRect.origin.x = 20; //bounds.left;
 356     hiRect.origin.y = 25; //bounds.top;
 357     hiRect.size.width = 120;// bounds.right - bounds.left;
 358     hiRect.size.height = 24;
 359
 360     //For some reason, this code causes the combo box not to be displayed at all.
 361     //hiRect.origin.x = bounds.left;
 362     //hiRect.origin.y = bounds.top;
 363     //hiRect.size.width = bounds.right - bounds.left;
 364     //hiRect.size.height = bounds.bottom - bounds.top;
 365     //printf("left = %d, right = %d, top = %d, bottom = %d\n", bounds.left, bounds.right, bounds.top, bounds.bottom);
 366     //printf("x = %d, y = %d, width = %d, height = %d\n", hibounds.origin.x, hibounds.origin.y, hibounds.size.width, hibounds.size.height);
 367     m_peer = new wxMacControl(this);
 368     verify_noerr( HIComboBoxCreate( &hiRect, CFSTR(""), NULL, NULL, kHIComboBoxStandardAttributes, m_peer->GetControlRefAddr() ) );
 369
 370
 371     m_peer->SetMinimum( 0 );
 372     m_peer->SetMaximum( 100);
 373     if ( n > 0 )
 374         m_peer->SetValue( 1 );
 375
 376     MacPostControlCreate(pos,size);
 377
 378     Append( choices[ i ] );
 379
 380     HIViewSetVisible( m_peer->GetControlRef(), true );
 381     SetSelection(0);
 382     EventHandlerRef comboEventHandler;
 383     InstallControlEventHandler( m_peer->GetControlRef(), GetwxMacComboBoxEventHandlerUPP(),
 384         GetEventTypeCount(eventList), eventList, this,
 385         (EventHandlerRef *)&comboEventHandler);
 386 #else
 387     m_choice = new wxComboBoxChoice(this, style );
 388     m_choice->SetMinSize( wxSize( POPUPWIDTH , POPUPHEIGHT ) );
 389
 390     wxSize csize = size;
 391     if ( style & wxCB_READONLY )
 392     {
 393         m_text = NULL;
 394     }
 395     else
 396     {
 397         m_text = new wxComboBoxText(this);
 398         if ( size.y == wxDefaultCoord ) {
 399           csize.y = m_text->GetSize().y;
 400         }
 401     }
 402
 403     DoSetSize(pos.x, pos.y, csize.x, csize.y);
 404
 405     m_choice->Append( n, choices );
 406     SetInitialSize(csize);   // Needed because it is a wxControlWithItems
 407 #endif
 408
 409     return true;
 410 }
 411
 412 wxString wxComboBox::GetValue() const
 413 {
 414 #if USE_HICOMBOBOX
 415     CFStringRef myString;
 416     HIComboBoxCopyTextItemAtIndex( m_peer->GetControlRef(), (CFIndex)GetSelection(), &myString );
 417     return wxMacCFStringHolder( myString, GetFont().GetEncoding() ).AsString();
 418 #else
 419     wxString        result;
 420
 421     if ( m_text == NULL )
 422     {
 423         result = m_choice->GetString( m_choice->GetSelection() );
 424     }
 425     else
 426     {
 427         result = m_text->GetValue();
 428     }
 429
 430     return result;
 431 #endif
 432 }
 433
 434 void wxComboBox::SetValue(const wxString& value)
 435 {
 436 #if USE_HICOMBOBOX
 437
 438 #else
 439     int s = FindString (value);
 440     if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
 441     {
 442         m_choice->Append(value);
 443     }
 444     SetStringSelection( value );
 445 #endif
 446 }
 447
 448 // Clipboard operations
 449 void wxComboBox::Copy()
 450 {
 451     if ( m_text != NULL )
 452     {
 453         m_text->Copy();
 454     }
 455 }
 456
 457 void wxComboBox::Cut()
 458 {
 459     if ( m_text != NULL )
 460     {
 461         m_text->Cut();
 462     }
 463 }
 464
 465 void wxComboBox::Paste()
 466 {
 467     if ( m_text != NULL )
 468     {
 469         m_text->Paste();
 470     }
 471 }
 472
 473 void wxComboBox::SetEditable(bool editable)
 474 {
 475     if ( ( m_text == NULL ) && editable )
 476     {
 477         m_text = new wxComboBoxText( this );
 478     }
 479     else if ( !editable )
 480     {
 481         wxDELETE(m_text);
 482     }
 483
 484     int currentX, currentY;
 485     GetPosition( &currentX, &currentY );
 486
 487     int currentW, currentH;
 488     GetSize( &currentW, &currentH );
 489
 490     DoMoveWindow( currentX, currentY, currentW, currentH );
 491 }
 492
 493 void wxComboBox::SetInsertionPoint(long pos)
 494 {
 495     // TODO
 496 }
 497
 498 void wxComboBox::SetInsertionPointEnd()
 499 {
 500     // TODO
 501 }
 502
 503 long wxComboBox::GetInsertionPoint() const
 504 {
 505     // TODO
 506     return 0;
 507 }
 508
 509 wxTextPos wxComboBox::GetLastPosition() const
 510 {
 511     // TODO
 512     return 0;
 513 }
 514
 515 void wxComboBox::Replace(long from, long to, const wxString& value)
 516 {
 517     // TODO
 518 }
 519
 520 void wxComboBox::Remove(long from, long to)
 521 {
 522     // TODO
 523 }
 524
 525 void wxComboBox::SetSelection(long from, long to)
 526 {
 527     // TODO
 528 }
 529
 530 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 531                               unsigned int pos,
 532                               void **clientData, wxClientDataType type)
 533 {
 534 #if USE_HICOMBOBOX
 535     const unsigned int count = items.GetCount();
 536     for ( unsigned int i = 0; i < count; ++i, ++pos )
 537     {
 538         HIComboBoxInsertTextItemAtIndex(m_peer->GetControlRef(),
 539                                         (CFIndex)pos,
 540                                         wxMacCFStringHolder(items[i],
 541                                                             GetFont().GetEncoding()));
 542         AssignNewItemClientData(pos, clientData, i, type);
 543     }
 544
 545     //SetControl32BitMaximum( m_peer->GetControlRef(), GetCount() );
 546
 547     return pos - 1;
 548 #else
 549     return m_choice->DoInsertItems( items, pos, clientData, type );
 550 #endif
 551 }
 552
 553 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 554 {
 555 #if USE_HICOMBOBOX
 556     return; //TODO
 557 #else
 558     return m_choice->DoSetItemClientData( n , clientData );
 559 #endif
 560 }
 561
 562 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 563 {
 564 #if USE_HICOMBOBOX
 565     return NULL; //TODO
 566 #else
 567     return m_choice->DoGetItemClientData( n );
 568 #endif
 569 }
 570
 571 unsigned int wxComboBox::GetCount() const {
 572 #if USE_HICOMBOBOX
 573     return (unsigned int) HIComboBoxGetItemCount( m_peer->GetControlRef() );
 574 #else
 575     return m_choice->GetCount();
 576 #endif
 577 }
 578
 579 void wxComboBox::DoDeleteOneItem(unsigned int n)
 580 {
 581 #if USE_HICOMBOBOX
 582     HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), (CFIndex)n );
 583 #else
 584     m_choice->Delete( n );
 585 #endif
 586 }
 587
 588 void wxComboBox::DoClear()
 589 {
 590 #if USE_HICOMBOBOX
 591     for ( CFIndex i = GetCount() - 1; i >= 0; ++ i )
 592         verify_noerr( HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), i ) );
 593     m_peer->SetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag,CFSTR(""));
 594 #else
 595     m_choice->Clear();
 596 #endif
 597 }
 598
 599 int wxComboBox::GetSelection() const
 600 {
 601 #if USE_HICOMBOBOX
 602     return FindString( GetStringSelection() );
 603 #else
 604     return m_choice->GetSelection();
 605 #endif
 606 }
 607
 608 void wxComboBox::SetSelection(int n)
 609 {
 610 #if USE_HICOMBOBOX
 611     SetControl32BitValue( m_peer->GetControlRef() , n + 1 );
 612 #else
 613     m_choice->SetSelection( n );
 614
 615     if ( m_text != NULL )
 616     {
 617         m_text->SetValue(GetString(n));
 618     }
 619 #endif
 620 }
 621
 622 int wxComboBox::FindString(const wxString& s, bool bCase) const
 623 {
 624 #if USE_HICOMBOBOX
 625     for( unsigned int i = 0 ; i < GetCount() ; i++ )
 626     {
 627         if (GetString(i).IsSameAs(s, bCase) )
 628             return i ;
 629     }
 630     return wxNOT_FOUND;
 631 #else
 632     return m_choice->FindString( s, bCase );
 633 #endif
 634 }
 635
 636 wxString wxComboBox::GetString(unsigned int n) const
 637 {
 638 #if USE_HICOMBOBOX
 639     CFStringRef itemText;
 640     HIComboBoxCopyTextItemAtIndex( m_peer->GetControlRef(), (CFIndex)n, &itemText );
 641     return wxMacCFStringHolder(itemText).AsString();
 642 #else
 643     return m_choice->GetString( n );
 644 #endif
 645 }
 646
 647 wxString wxComboBox::GetStringSelection() const
 648 {
 649 #if USE_HICOMBOBOX
 650     return wxMacCFStringHolder(m_peer->GetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag)).AsString();
 651 #else
 652     int sel = GetSelection ();
 653     if (sel != wxNOT_FOUND)
 654         return wxString(this->GetString((unsigned int)sel));
 655     else
 656         return wxEmptyString;
 657 #endif
 658 }
 659
 660 void wxComboBox::SetString(unsigned int n, const wxString& s)
 661 {
 662 #if USE_HICOMBOBOX
 663     verify_noerr ( HIComboBoxInsertTextItemAtIndex( m_peer->GetControlRef(), (CFIndex) n,
 664         wxMacCFStringHolder(s, GetFont().GetEncoding()) ) );
 665     verify_noerr ( HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), (CFIndex) n + 1 ) );
 666 #else
 667     m_choice->SetString( n , s );
 668 #endif
 669 }
 670
 671 bool wxComboBox::IsEditable() const
 672 {
 673 #if USE_HICOMBOBOX
 674     // TODO
 675     return !HasFlag(wxCB_READONLY);
 676 #else
 677     return m_text != NULL && !HasFlag(wxCB_READONLY);
 678 #endif
 679 }
 680
 681 void wxComboBox::Undo()
 682 {
 683 #if USE_HICOMBOBOX
 684     // TODO
 685 #else
 686     if (m_text != NULL)
 687         m_text->Undo();
 688 #endif
 689 }
 690
 691 void wxComboBox::Redo()
 692 {
 693 #if USE_HICOMBOBOX
 694     // TODO
 695 #else
 696     if (m_text != NULL)
 697         m_text->Redo();
 698 #endif
 699 }
 700
 701 void wxComboBox::SelectAll()
 702 {
 703 #if USE_HICOMBOBOX
 704     // TODO
 705 #else
 706     if (m_text != NULL)
 707         m_text->SelectAll();
 708 #endif
 709 }
 710
 711 bool wxComboBox::CanCopy() const
 712 {
 713 #if USE_HICOMBOBOX
 714     // TODO
 715     return false;
 716 #else
 717     if (m_text != NULL)
 718         return m_text->CanCopy();
 719     else
 720         return false;
 721 #endif
 722 }
 723
 724 bool wxComboBox::CanCut() const
 725 {
 726 #if USE_HICOMBOBOX
 727     // TODO
 728     return false;
 729 #else
 730     if (m_text != NULL)
 731         return m_text->CanCut();
 732     else
 733         return false;
 734 #endif
 735 }
 736
 737 bool wxComboBox::CanPaste() const
 738 {
 739 #if USE_HICOMBOBOX
 740     // TODO
 741     return false;
 742 #else
 743     if (m_text != NULL)
 744         return m_text->CanPaste();
 745     else
 746         return false;
 747 #endif
 748 }
 749
 750 bool wxComboBox::CanUndo() const
 751 {
 752 #if USE_HICOMBOBOX
 753     // TODO
 754     return false;
 755 #else
 756     if (m_text != NULL)
 757         return m_text->CanUndo();
 758     else
 759         return false;
 760 #endif
 761 }
 762
 763 bool wxComboBox::CanRedo() const
 764 {
 765 #if USE_HICOMBOBOX
 766     // TODO
 767     return false;
 768 #else
 769     if (m_text != NULL)
 770         return m_text->CanRedo();
 771     else
 772         return false;
 773 #endif
 774 }
 775
 776 bool wxComboBox::OSXHandleClicked( double timestampsec )
 777 {
 778     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
 779     event.SetInt(GetSelection());
 780     event.SetEventObject(this);
 781     event.SetString(GetStringSelection());
 782     ProcessCommand(event);
 783     return true;
 784 }