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Handle cases where an index larger than GetItemCount() is passed into InsertItem.
[wxWidgets.git] / src / mac / carbon / combobxc.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/mac/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/mac/uma.h"
22 #if TARGET_API_MAC_OSX
23 #ifndef __HIVIEW__
24 #include <HIToolbox/HIView.h>
25 #endif
26 #endif
27
28 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
29
30 #if TARGET_API_MAC_OSX
31 #define USE_HICOMBOBOX 1 //use hi combobox define
32 #else
33 #define USE_HICOMBOBOX 0
34 #endif
35
36 static int nextPopUpMenuId = 1000;
37 MenuHandle NewUniqueMenu()
38 {
39 MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" );
40 nextPopUpMenuId++;
41 return handle;
42 }
43
44 #if USE_HICOMBOBOX
45 static const EventTypeSpec eventList[] =
46 {
47 { kEventClassTextField , kEventTextAccepted } ,
48 };
49
50 static pascal OSStatus wxMacComboBoxEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
51 {
52 OSStatus result = eventNotHandledErr;
53 wxComboBox* cb = (wxComboBox*) data;
54
55 wxMacCarbonEvent cEvent( event );
56
57 switch( cEvent.GetClass() )
58 {
59 case kEventClassTextField :
60 switch( cEvent.GetKind() )
61 {
62 case kEventTextAccepted :
63 {
64 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, cb->GetId() );
65 event.SetInt( cb->GetSelection() );
66 event.SetString( cb->GetStringSelection() );
67 event.SetEventObject( cb );
68 cb->GetEventHandler()->ProcessEvent( event );
69 }
70 break;
71 default :
72 break;
73 }
74 break;
75 default :
76 break;
77 }
78
79
80 return result;
81 }
82
83 DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacComboBoxEventHandler )
84
85 #endif
86
87 // ----------------------------------------------------------------------------
88 // constants
89 // ----------------------------------------------------------------------------
90
91 // the margin between the text control and the choice
92 static const wxCoord MARGIN = 2;
93 #if TARGET_API_MAC_OSX
94 static const int POPUPWIDTH = 24;
95 #else
96 static const int POPUPWIDTH = 18;
97 #endif
98 static const int POPUPHEIGHT = 23;
99
100 // ----------------------------------------------------------------------------
101 // wxComboBoxText: text control forwards events to combobox
102 // ----------------------------------------------------------------------------
103
104 class wxComboBoxText : public wxTextCtrl
105 {
106 public:
107 wxComboBoxText( wxComboBox * cb )
108 : wxTextCtrl( cb , 1 )
109 {
110 m_cb = cb;
111 }
112
113 protected:
114 void OnChar( wxKeyEvent& event )
115 {
116 if ( event.GetKeyCode() == WXK_RETURN )
117 {
118 wxString value = GetValue();
119
120 if ( m_cb->GetCount() == 0 )
121 {
122 // make Enter generate "selected" event if there is only one item
123 // in the combobox - without it, it's impossible to select it at
124 // all!
125 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
126 event.SetInt( 0 );
127 event.SetString( value );
128 event.SetEventObject( m_cb );
129 m_cb->GetEventHandler()->ProcessEvent( event );
130 }
131 else
132 {
133 // add the item to the list if it's not there yet
134 if ( m_cb->FindString(value) == wxNOT_FOUND )
135 {
136 m_cb->Append(value);
137 m_cb->SetStringSelection(value);
138
139 // and generate the selected event for it
140 wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
141 event.SetInt( m_cb->GetCount() - 1 );
142 event.SetString( value );
143 event.SetEventObject( m_cb );
144 m_cb->GetEventHandler()->ProcessEvent( event );
145 }
146
147 // This will invoke the dialog default action, such
148 // as the clicking the default button.
149
150 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
151 if ( tlw && tlw->GetDefaultItem() )
152 {
153 wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
154 if ( def && def->IsEnabled() )
155 {
156 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
157 event.SetEventObject(def);
158 def->Command(event);
159 return;
160 }
161 }
162
163 return;
164 }
165 }
166
167 event.Skip();
168 }
169 private:
170 wxComboBox *m_cb;
171
172 DECLARE_EVENT_TABLE()
173 };
174
175 BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
176 EVT_CHAR( wxComboBoxText::OnChar)
177 END_EVENT_TABLE()
178
179 class wxComboBoxChoice : public wxChoice
180 {
181 public:
182 wxComboBoxChoice(wxComboBox *cb, int style)
183 : wxChoice( cb , 1 )
184 {
185 m_cb = cb;
186 }
187
188 protected:
189 void OnChoice( wxCommandEvent& e )
190 {
191 wxString s = e.GetString();
192
193 m_cb->DelegateChoice( s );
194 wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
195 event2.SetInt(m_cb->GetSelection());
196 event2.SetEventObject(m_cb);
197 event2.SetString(m_cb->GetStringSelection());
198 m_cb->ProcessCommand(event2);
199 }
200 virtual wxSize DoGetBestSize() const
201 {
202 wxSize sz = wxChoice::DoGetBestSize();
203 sz.x = POPUPWIDTH;
204 return sz;
205 }
206
207 private:
208 wxComboBox *m_cb;
209
210 DECLARE_EVENT_TABLE()
211 };
212
213 BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
214 EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
215 END_EVENT_TABLE()
216
217 wxComboBox::~wxComboBox()
218 {
219 // delete client objects
220 FreeData();
221
222 // delete the controls now, don't leave them alive even though they would
223 // still be eventually deleted by our parent - but it will be too late, the
224 // user code expects them to be gone now
225 if (m_text != NULL) {
226 delete m_text;
227 m_text = NULL;
228 }
229 if (m_choice != NULL) {
230 delete m_choice;
231 m_choice = NULL;
232 }
233 }
234
235
236 // ----------------------------------------------------------------------------
237 // geometry
238 // ----------------------------------------------------------------------------
239
240 wxSize wxComboBox::DoGetBestSize() const
241 {
242 #if USE_HICOMBOBOX
243 return wxControl::DoGetBestSize();
244 #else
245 wxSize size = m_choice->GetBestSize();
246
247 if ( m_text != NULL )
248 {
249 wxSize sizeText = m_text->GetBestSize();
250
251 size.x = POPUPWIDTH + sizeText.x + MARGIN;
252 }
253
254 return size;
255 #endif
256 }
257
258 void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
259 #if USE_HICOMBOBOX
260 wxControl::DoMoveWindow(x, y, width, height);
261 #else
262 height = POPUPHEIGHT;
263
264 wxControl::DoMoveWindow(x, y, width, height);
265
266 if ( m_text == NULL )
267 {
268 // we might not be fully constructed yet, therefore watch out...
269 if ( m_choice )
270 m_choice->SetSize(0, 0 , width, wxDefaultCoord);
271 }
272 else
273 {
274 wxCoord wText = width - POPUPWIDTH - MARGIN;
275 m_text->SetSize(0, 0, wText, height);
276 m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, wxDefaultCoord);
277 }
278 #endif
279 }
280
281
282
283 // ----------------------------------------------------------------------------
284 // operations forwarded to the subcontrols
285 // ----------------------------------------------------------------------------
286
287 bool wxComboBox::Enable(bool enable)
288 {
289 if ( !wxControl::Enable(enable) )
290 return false;
291
292 return true;
293 }
294
295 bool wxComboBox::Show(bool show)
296 {
297 if ( !wxControl::Show(show) )
298 return false;
299
300 return true;
301 }
302
303 void wxComboBox::SetFocus()
304 {
305 #if USE_HICOMBOBOX
306 wxControl::SetFocus();
307 #else
308 if ( m_text != NULL) {
309 m_text->SetFocus();
310 }
311 #endif
312 }
313
314
315 void wxComboBox::DelegateTextChanged( const wxString& value )
316 {
317 SetStringSelection( value );
318 }
319
320
321 void wxComboBox::DelegateChoice( const wxString& value )
322 {
323 SetStringSelection( value );
324 }
325
326
327 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
328 const wxString& value,
329 const wxPoint& pos,
330 const wxSize& size,
331 const wxArrayString& choices,
332 long style,
333 const wxValidator& validator,
334 const wxString& name)
335 {
336 wxCArrayString chs( choices );
337
338 return Create( parent, id, value, pos, size, chs.GetCount(),
339 chs.GetStrings(), style, validator, name );
340 }
341
342
343 bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
344 const wxString& value,
345 const wxPoint& pos,
346 const wxSize& size,
347 int n, const wxString choices[],
348 long style,
349 const wxValidator& validator,
350 const wxString& name)
351 {
352 m_text = NULL;
353 m_choice = NULL;
354 #if USE_HICOMBOBOX
355 m_macIsUserPane = false;
356 #endif
357 if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
358 wxDefaultValidator, name) )
359 {
360 return false;
361 }
362 #if USE_HICOMBOBOX
363 Rect bounds = wxMacGetBoundsForControl( this , pos , size );
364 HIRect hiRect;
365
366 hiRect.origin.x = 20; //bounds.left;
367 hiRect.origin.y = 25; //bounds.top;
368 hiRect.size.width = 120;// bounds.right - bounds.left;
369 hiRect.size.height = 24;
370
371 //For some reason, this code causes the combo box not to be displayed at all.
372 //hiRect.origin.x = bounds.left;
373 //hiRect.origin.y = bounds.top;
374 //hiRect.size.width = bounds.right - bounds.left;
375 //hiRect.size.height = bounds.bottom - bounds.top;
376 //printf("left = %d, right = %d, top = %d, bottom = %d\n", bounds.left, bounds.right, bounds.top, bounds.bottom);
377 //printf("x = %d, y = %d, width = %d, height = %d\n", hibounds.origin.x, hibounds.origin.y, hibounds.size.width, hibounds.size.height);
378 m_peer = new wxMacControl(this);
379 verify_noerr( HIComboBoxCreate( &hiRect, CFSTR(""), NULL, NULL, kHIComboBoxStandardAttributes, m_peer->GetControlRefAddr() ) );
380
381
382 m_peer->SetMinimum( 0 );
383 m_peer->SetMaximum( 100);
384 if ( n > 0 )
385 m_peer->SetValue( 1 );
386
387 MacPostControlCreate(pos,size);
388
389 for ( int i = 0; i < n; i++ )
390 {
391 DoAppend( choices[ i ] );
392 }
393
394 HIViewSetVisible( m_peer->GetControlRef(), true );
395 SetSelection(0);
396 EventHandlerRef comboEventHandler;
397 InstallControlEventHandler( m_peer->GetControlRef(), GetwxMacComboBoxEventHandlerUPP(),
398 GetEventTypeCount(eventList), eventList, this,
399 (EventHandlerRef *)&comboEventHandler);
400 #else
401 m_choice = new wxComboBoxChoice(this, style );
402
403 m_choice = new wxComboBoxChoice(this, style );
404 m_choice->SetSizeHints( wxSize( POPUPWIDTH , POPUPHEIGHT ) );
405
406 wxSize csize = size;
407 if ( style & wxCB_READONLY )
408 {
409 m_text = NULL;
410 }
411 else
412 {
413 m_text = new wxComboBoxText(this);
414 if ( size.y == wxDefaultCoord ) {
415 csize.y = m_text->GetSize().y;
416 }
417 }
418
419 DoSetSize(pos.x, pos.y, csize.x, csize.y);
420
421 for ( int i = 0; i < n; i++ )
422 {
423 m_choice->DoAppend( choices[ i ] );
424 }
425 SetBestSize(csize); // Needed because it is a wxControlWithItems
426 #endif
427
428 return true;
429 }
430
431 wxString wxComboBox::GetValue() const
432 {
433 #if USE_HICOMBOBOX
434 CFStringRef myString;
435 HIComboBoxCopyTextItemAtIndex( m_peer->GetControlRef(), (CFIndex)GetSelection(), &myString );
436 return wxMacCFStringHolder( myString, m_font.GetEncoding() ).AsString();
437 #else
438 wxString result;
439
440 if ( m_text == NULL )
441 {
442 result = m_choice->GetString( m_choice->GetSelection() );
443 }
444 else
445 {
446 result = m_text->GetValue();
447 }
448
449 return result;
450 #endif
451 }
452
453 void wxComboBox::SetValue(const wxString& value)
454 {
455 #if USE_HICOMBOBOX
456
457 #else
458 int s = FindString (value);
459 if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
460 {
461 m_choice->Append(value);
462 }
463 SetStringSelection( value );
464 #endif
465 }
466
467 // Clipboard operations
468 void wxComboBox::Copy()
469 {
470 if ( m_text != NULL )
471 {
472 m_text->Copy();
473 }
474 }
475
476 void wxComboBox::Cut()
477 {
478 if ( m_text != NULL )
479 {
480 m_text->Cut();
481 }
482 }
483
484 void wxComboBox::Paste()
485 {
486 if ( m_text != NULL )
487 {
488 m_text->Paste();
489 }
490 }
491
492 void wxComboBox::SetEditable(bool editable)
493 {
494 if ( ( m_text == NULL ) && editable )
495 {
496 m_text = new wxComboBoxText( this );
497 }
498 else if ( ( m_text != NULL ) && !editable )
499 {
500 delete m_text;
501 m_text = NULL;
502 }
503
504 int currentX, currentY;
505 GetPosition( &currentX, &currentY );
506
507 int currentW, currentH;
508 GetSize( &currentW, &currentH );
509
510 DoMoveWindow( currentX, currentY, currentW, currentH );
511 }
512
513 void wxComboBox::SetInsertionPoint(long pos)
514 {
515 // TODO
516 }
517
518 void wxComboBox::SetInsertionPointEnd()
519 {
520 // TODO
521 }
522
523 long wxComboBox::GetInsertionPoint() const
524 {
525 // TODO
526 return 0;
527 }
528
529 wxTextPos wxComboBox::GetLastPosition() const
530 {
531 // TODO
532 return 0;
533 }
534
535 void wxComboBox::Replace(long from, long to, const wxString& value)
536 {
537 // TODO
538 }
539
540 void wxComboBox::Remove(long from, long to)
541 {
542 // TODO
543 }
544
545 void wxComboBox::SetSelection(long from, long to)
546 {
547 // TODO
548 }
549
550 int wxComboBox::DoAppend(const wxString& item)
551 {
552 #if USE_HICOMBOBOX
553 CFIndex outIndex;
554 HIComboBoxAppendTextItem( m_peer->GetControlRef(), wxMacCFStringHolder( item, m_font.GetEncoding() ), &outIndex );
555 //SetControl32BitMaximum( m_peer->GetControlRef(), GetCount() );
556 return (int) outIndex;
557 #else
558 return m_choice->DoAppend( item );
559 #endif
560 }
561
562 int wxComboBox::DoInsert(const wxString& item, unsigned int pos)
563 {
564 #if USE_HICOMBOBOX
565 HIComboBoxInsertTextItemAtIndex( m_peer->GetControlRef(), (CFIndex)pos, wxMacCFStringHolder(item, m_font.GetEncoding()) );
566
567 //SetControl32BitMaximum( m_peer->GetControlRef(), GetCount() );
568
569 return pos;
570 #else
571 return m_choice->DoInsert( item , pos );
572 #endif
573 }
574
575 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
576 {
577 #if USE_HICOMBOBOX
578 return; //TODO
579 #else
580 return m_choice->DoSetItemClientData( n , clientData );
581 #endif
582 }
583
584 void* wxComboBox::DoGetItemClientData(unsigned int n) const
585 {
586 #if USE_HICOMBOBOX
587 return NULL; //TODO
588 #else
589 return m_choice->DoGetItemClientData( n );
590 #endif
591 }
592
593 void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
594 {
595 #if USE_HICOMBOBOX
596 return; //TODO
597 #else
598 return m_choice->DoSetItemClientObject( n , clientData );
599 #endif
600 }
601
602 wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
603 {
604 #if USE_HICOMBOBOX
605 return NULL;
606 #else
607 return m_choice->DoGetItemClientObject( n );
608 #endif
609 }
610
611 void wxComboBox::FreeData()
612 {
613 if (HasClientObjectData())
614 {
615 unsigned int count = GetCount();
616 for ( unsigned int n = 0; n < count; n++ )
617 {
618 SetClientObject( n, NULL );
619 }
620 }
621 }
622
623 unsigned int wxComboBox::GetCount() const {
624 #if USE_HICOMBOBOX
625 return (unsigned int) HIComboBoxGetItemCount( m_peer->GetControlRef() );
626 #else
627 return m_choice->GetCount();
628 #endif
629 }
630
631 void wxComboBox::Delete(unsigned int n)
632 {
633 #if USE_HICOMBOBOX
634 HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), (CFIndex)n );
635 #else
636 // force client object deletion
637 if( HasClientObjectData() )
638 SetClientObject( n, NULL );
639 m_choice->Delete( n );
640 #endif
641 }
642
643 void wxComboBox::Clear()
644 {
645 FreeData();
646 #if USE_HICOMBOBOX
647 for ( CFIndex i = GetCount() - 1; i >= 0; ++ i )
648 verify_noerr( HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), i ) );
649 m_peer->SetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag,CFSTR(""));
650 #else
651 m_choice->Clear();
652 #endif
653 }
654
655 int wxComboBox::GetSelection() const
656 {
657 #if USE_HICOMBOBOX
658 return FindString( GetStringSelection() );
659 #else
660 return m_choice->GetSelection();
661 #endif
662 }
663
664 void wxComboBox::SetSelection(int n)
665 {
666 #if USE_HICOMBOBOX
667 SetControl32BitValue( m_peer->GetControlRef() , n + 1 );
668 #else
669 m_choice->SetSelection( n );
670
671 if ( m_text != NULL )
672 {
673 m_text->SetValue(GetString(n));
674 }
675 #endif
676 }
677
678 int wxComboBox::FindString(const wxString& s, bool bCase) const
679 {
680 #if USE_HICOMBOBOX
681 for( unsigned int i = 0 ; i < GetCount() ; i++ )
682 {
683 if (GetString(i).IsSameAs(s, bCase) )
684 return i ;
685 }
686 return wxNOT_FOUND;
687 #else
688 return m_choice->FindString( s, bCase );
689 #endif
690 }
691
692 wxString wxComboBox::GetString(unsigned int n) const
693 {
694 #if USE_HICOMBOBOX
695 CFStringRef itemText;
696 HIComboBoxCopyTextItemAtIndex( m_peer->GetControlRef(), (CFIndex)n, &itemText );
697 return wxMacCFStringHolder(itemText).AsString();
698 #else
699 return m_choice->GetString( n );
700 #endif
701 }
702
703 wxString wxComboBox::GetStringSelection() const
704 {
705 #if USE_HICOMBOBOX
706 return wxMacCFStringHolder(m_peer->GetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag)).AsString();
707 #else
708 int sel = GetSelection ();
709 if (sel != wxNOT_FOUND)
710 return wxString(this->GetString((unsigned int)sel));
711 else
712 return wxEmptyString;
713 #endif
714 }
715
716 void wxComboBox::SetString(unsigned int n, const wxString& s)
717 {
718 #if USE_HICOMBOBOX
719 verify_noerr ( HIComboBoxInsertTextItemAtIndex( m_peer->GetControlRef(), (CFIndex) n,
720 wxMacCFStringHolder(s, m_font.GetEncoding()) ) );
721 verify_noerr ( HIComboBoxRemoveItemAtIndex( m_peer->GetControlRef(), (CFIndex) n + 1 ) );
722 #else
723 m_choice->SetString( n , s );
724 #endif
725 }
726
727 bool wxComboBox::IsEditable() const
728 {
729 #if USE_HICOMBOBOX
730 // TODO
731 return !HasFlag(wxCB_READONLY);
732 #else
733 return m_text != NULL && !HasFlag(wxCB_READONLY);
734 #endif
735 }
736
737 void wxComboBox::Undo()
738 {
739 #if USE_HICOMBOBOX
740 // TODO
741 #else
742 if (m_text != NULL)
743 m_text->Undo();
744 #endif
745 }
746
747 void wxComboBox::Redo()
748 {
749 #if USE_HICOMBOBOX
750 // TODO
751 #else
752 if (m_text != NULL)
753 m_text->Redo();
754 #endif
755 }
756
757 void wxComboBox::SelectAll()
758 {
759 #if USE_HICOMBOBOX
760 // TODO
761 #else
762 if (m_text != NULL)
763 m_text->SelectAll();
764 #endif
765 }
766
767 bool wxComboBox::CanCopy() const
768 {
769 #if USE_HICOMBOBOX
770 // TODO
771 return false;
772 #else
773 if (m_text != NULL)
774 return m_text->CanCopy();
775 else
776 return false;
777 #endif
778 }
779
780 bool wxComboBox::CanCut() const
781 {
782 #if USE_HICOMBOBOX
783 // TODO
784 return false;
785 #else
786 if (m_text != NULL)
787 return m_text->CanCut();
788 else
789 return false;
790 #endif
791 }
792
793 bool wxComboBox::CanPaste() const
794 {
795 #if USE_HICOMBOBOX
796 // TODO
797 return false;
798 #else
799 if (m_text != NULL)
800 return m_text->CanPaste();
801 else
802 return false;
803 #endif
804 }
805
806 bool wxComboBox::CanUndo() const
807 {
808 #if USE_HICOMBOBOX
809 // TODO
810 return false;
811 #else
812 if (m_text != NULL)
813 return m_text->CanUndo();
814 else
815 return false;
816 #endif
817 }
818
819 bool wxComboBox::CanRedo() const
820 {
821 #if USE_HICOMBOBOX
822 // TODO
823 return false;
824 #else
825 if (m_text != NULL)
826 return m_text->CanRedo();
827 else
828 return false;
829 #endif
830 }
831
832 wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
833 {
834 wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
835 event.SetInt(GetSelection());
836 event.SetEventObject(this);
837 event.SetString(GetStringSelection());
838 ProcessCommand(event);
839 return noErr;
840 }