X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ddd5387387e8af9a38eff1a516687a698a71b2b7..e1f833da2a8bbe01cc96c0d7a3542ac2c1d6d6f0:/src/gtk/combobox.cpp

diff --git a/src/gtk/combobox.cpp b/src/gtk/combobox.cpp
index 1f39a8f9ad..b94d1f983b 100644
--- a/src/gtk/combobox.cpp
+++ b/src/gtk/combobox.cpp
@@ -21,195 +21,38 @@
     #include "wx/arrstr.h"
 #endif
 
-// We use GtkCombo which has been deprecated since GTK+ 2.3.0
-// in favour of GtkComboBox for <GTK2.4 runtime
-// We also use GtkList
-#ifdef GTK_DISABLE_DEPRECATED
-#undef GTK_DISABLE_DEPRECATED
-#endif
 #include "wx/gtk/private.h"
 
-//-----------------------------------------------------------------------------
-// data
-//-----------------------------------------------------------------------------
-
-extern bool   g_blockEventsOnDrag;
-static int    g_SelectionBeforePopup = wxID_NONE; // this means the popup is hidden
-
-//-----------------------------------------------------------------------------
-//  "changed" - typing and list item matches get changed, select-child
-//              if it doesn't match an item then just get a single changed
-//-----------------------------------------------------------------------------
-
-extern "C" {
-static void
-gtkcombo_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
-
-    if (combo->m_ignoreNextUpdate)
-    {
-        combo->m_ignoreNextUpdate = false;
-        return;
-    }
-
-    if (!combo->m_hasVMT) return;
-
-    wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
-    event.SetString( combo->GetValue() );
-    event.SetEventObject( combo );
-    combo->GetEventHandler()->ProcessEvent( event );
-}
-}
-
-extern "C" {
-static void
-gtkcombo_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
-{
-}
-}
-
-extern "C" {
-static void
-gtkcombo_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
-{
-    // when the popup is hidden, throw a SELECTED event only if the combobox
-    // selection changed.
-    const int curSelection = combo->GetCurrentSelection();
-
-    const bool hasChanged = curSelection != g_SelectionBeforePopup;
-
-    // reset the selection flag to value meaning that it is hidden and do it
-    // now, before generating the events, so that GetSelection() returns the
-    // new value from the event handler
-    g_SelectionBeforePopup = wxID_NONE;
-
-    if ( hasChanged )
-    {
-        wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
-        event.SetInt( curSelection );
-        event.SetString( combo->GetStringSelection() );
-        event.SetEventObject( combo );
-        combo->GetEventHandler()->ProcessEvent( event );
-
-        // for consistency with the other ports, send TEXT event
-        wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
-        event2.SetString( combo->GetStringSelection() );
-        event2.SetEventObject( combo );
-        combo->GetEventHandler()->ProcessEvent( event2 );
-    }
-}
-}
-
-extern "C" {
-static void
-gtkcombo_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
-{
-    // store the combobox selection value before the popup is shown
-    g_SelectionBeforePopup = combo->GetCurrentSelection();
-}
-}
-
-//-----------------------------------------------------------------------------
-// "select-child" - click/cursor get select-child, changed, select-child
-//-----------------------------------------------------------------------------
-
-extern "C" {
-static void
-gtkcombo_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
-
-    if (!combo->m_hasVMT) return;
-
-    if (g_blockEventsOnDrag) return;
-
-    int curSelection = combo->GetCurrentSelection();
-
-    if (combo->m_prevSelection == curSelection) return;
-
-    GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
-    gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
-
-    combo->m_prevSelection = curSelection;
-
-    // Quickly set the value of the combo box
-    // as GTK+ does that only AFTER the event
-    // is sent.
-    g_signal_handlers_disconnect_by_func (GTK_COMBO (combo->GetHandle())->entry,
-                                          (gpointer) gtkcombo_text_changed_callback,
-                                          combo);
-    combo->SetValue( combo->GetStringSelection() );
-    g_signal_connect_after (GTK_COMBO (combo->GetHandle())->entry, "changed",
-                            G_CALLBACK (gtkcombo_text_changed_callback), combo);
-
-    // throw a SELECTED event only if the combobox popup is hidden (wxID_NONE)
-    // because when combobox popup is shown, gtkcombo_combo_select_child_callback is
-    // called each times the mouse is over an item with a pressed button so a lot
-    // of SELECTED event could be generated if the user keep the mouse button down
-    // and select other items ...
-    if (g_SelectionBeforePopup == wxID_NONE)
-    {
-        wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
-        event.SetInt( curSelection );
-        event.SetString( combo->GetStringSelection() );
-        event.SetEventObject( combo );
-        combo->GetEventHandler()->ProcessEvent( event );
-
-        // for consistency with the other ports, don't generate text update
-        // events while the user is browsing the combobox neither
-        wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
-        event2.SetString( combo->GetValue() );
-        event2.SetEventObject( combo );
-        combo->GetEventHandler()->ProcessEvent( event2 );
-    }
-}
-}
+// ----------------------------------------------------------------------------
+// GTK callbacks
+// ----------------------------------------------------------------------------
 
-#ifdef __WXGTK24__
 extern "C" {
 static void
 gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
     if (!combo->m_hasVMT) return;
 
     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
     event.SetString( combo->GetValue() );
     event.SetEventObject( combo );
-    combo->GetEventHandler()->ProcessEvent( event );
-}
+    combo->HandleWindowEvent( event );
 }
 
-extern "C" {
 static void
 gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
-    if (!combo->m_hasVMT) return;
-
-    if (combo->GetSelection() == -1)
-        return;
-
-    wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
-    event.SetInt( combo->GetSelection() );
-    event.SetString( combo->GetStringSelection() );
-    event.SetEventObject( combo );
-    combo->GetEventHandler()->ProcessEvent( event );
+    combo->SendSelectionChangedEvent(wxEVT_COMMAND_COMBOBOX_SELECTED);
 }
 }
-#endif
 
 //-----------------------------------------------------------------------------
 // wxComboBox
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxChoice)
 
-BEGIN_EVENT_TABLE(wxComboBox, wxControl)
-    EVT_SIZE(wxComboBox::OnSize)
+BEGIN_EVENT_TABLE(wxComboBox, wxChoice)
     EVT_CHAR(wxComboBox::OnChar)
 
     EVT_MENU(wxID_CUT, wxComboBox::OnCut)
@@ -229,6 +72,11 @@ BEGIN_EVENT_TABLE(wxComboBox, wxControl)
     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 END_EVENT_TABLE()
 
+void wxComboBox::Init()
+{
+    m_entry = NULL;
+}
+
 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
                          const wxString& value,
                          const wxPoint& pos, const wxSize& size,
@@ -248,11 +96,6 @@ bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
                          long style, const wxValidator& validator,
                          const wxString& name )
 {
-    m_ignoreNextUpdate = false;
-    m_needParent = true;
-    m_acceptsFocus = true;
-    m_prevSelection = 0;
-
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {
@@ -260,959 +103,90 @@ bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
         return false;
     }
 
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        m_widget = gtk_combo_box_entry_new_text();
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-
-        gtk_entry_set_editable( GTK_ENTRY( GTK_BIN(m_widget)->child ), TRUE );
+    if (HasFlag(wxCB_SORT))
+        m_strings = new wxSortedArrayString();
 
-        for (int i = 0; i < n; i++)
-        {
-            gtk_combo_box_append_text( combobox,  wxGTK_CONV( choices[i] ) );
+    GTKCreateComboBoxWidget();
 
-            m_clientDataList.Append( (wxObject*)NULL );
-            m_clientObjectList.Append( (wxObject*)NULL );
-        }
-    }
-    else
-#endif
+    if (HasFlag(wxBORDER_NONE))
     {
-        m_widget = gtk_combo_new();
-        GtkCombo* combo = GTK_COMBO(m_widget);
-
-        // Disable GTK's broken events ...
-        g_signal_handler_disconnect (combo->entry, combo->entry_change_id);
-        // ... and add surrogate handler.
-        combo->entry_change_id = g_signal_connect (combo->entry, "changed",
-                                               G_CALLBACK (gtkcombo_dummy_callback),
-                                               combo);
-
-        // make it more useable
-        gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
-
-        // and case-sensitive
-        gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
-
-        if (style & wxNO_BORDER)
-            g_object_set (combo->entry, "has-frame", FALSE, NULL );
-
-        GtkWidget *list = combo->list;
-
-        for (int i = 0; i < n; i++)
-        {
-            GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
+        // Doesn't seem to work
+        // g_object_set (m_widget, "has-frame", FALSE, NULL);
+    }
 
-            m_clientDataList.Append( (wxObject*)NULL );
-            m_clientObjectList.Append( (wxObject*)NULL );
+    GtkEntry * const entry = GetEntry();
 
-            gtk_container_add( GTK_CONTAINER(list), list_item );
+    if ( entry )
+    {
+        // Set it up to trigger default item on enter key press
+        gtk_entry_set_activates_default( entry,
+                                         !HasFlag(wxTE_PROCESS_ENTER) );
 
-            gtk_widget_show( list_item );
-        }
+        gtk_entry_set_editable( entry, TRUE );
     }
 
+    Append(n, choices);
 
     m_parent->DoAddChild( this );
 
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    m_focusWidget = GTK_WIDGET( entry );
+    if ( entry )
+        m_focusWidget = GTK_WIDGET( entry );
 
     PostCreation(size);
 
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        ConnectWidget( m_widget );
-    else
-#endif
-        ConnectWidget( GTK_COMBO(m_widget)->button );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        gtk_entry_set_text( entry, wxGTK_CONV(value) );
-
-        if (style & wxCB_READONLY)
-            gtk_entry_set_editable( entry, FALSE );
-
-        g_signal_connect_after (entry, "changed",
-                            G_CALLBACK (gtkcombobox_text_changed_callback), this);
-
-        g_signal_connect_after (m_widget, "changed",
-                            G_CALLBACK (gtkcombobox_changed_callback), this);
-    }
-    else
-#endif
+    if ( entry )
     {
-        GtkCombo *combo = GTK_COMBO(m_widget);
-        // MSW's combo box shows the value and the selection is -1
         gtk_entry_set_text( entry, wxGTK_CONV(value) );
-        gtk_list_unselect_all( GTK_LIST(combo->list) );
 
         if (style & wxCB_READONLY)
             gtk_entry_set_editable( entry, FALSE );
 
-        // "show" and "hide" events are generated when user click on the combobox button which popups a list
-        // this list is the "popwin" gtk widget
-        g_signal_connect (GTK_COMBO(combo)->popwin, "hide",
-                      G_CALLBACK (gtkcombo_popup_hide_callback), this);
-        g_signal_connect (GTK_COMBO(combo)->popwin, "show",
-                      G_CALLBACK (gtkcombo_popup_show_callback), this);
-        g_signal_connect_after (combo->list, "select-child",
-                            G_CALLBACK (gtkcombo_combo_select_child_callback),
-                            this);
         g_signal_connect_after (entry, "changed",
-                            G_CALLBACK (gtkcombo_text_changed_callback), this);
-
-        // This is required for tool bar support
-        // Doesn't currently work
-//        wxSize setsize = GetSize();
-//        gtk_widget_set_size_request( m_widget, setsize.x, setsize.y );
+                                G_CALLBACK (gtkcombobox_text_changed_callback), this);
     }
 
-    SetBestSize(size); // need this too because this is a wxControlWithItems
+    g_signal_connect_after (m_widget, "changed",
+                        G_CALLBACK (gtkcombobox_changed_callback), this);
 
+    SetInitialSize(size); // need this too because this is a wxControlWithItems
 
     return true;
 }
 
-wxComboBox::~wxComboBox()
+void wxComboBox::GTKCreateComboBoxWidget()
 {
-    wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
-    while (node)
-    {
-        wxClientData *cd = (wxClientData*)node->GetData();
-        if (cd) delete cd;
-        node = node->GetNext();
-    }
-    m_clientObjectList.Clear();
+    m_widget = gtk_combo_box_entry_new_text();
+    g_object_ref(m_widget);
 
-    m_clientDataList.Clear();
+    m_entry = GTK_ENTRY(GTK_BIN(m_widget)->child);
 }
 
-void wxComboBox::SetFocus()
+GtkEditable *wxComboBox::GetEditable() const
 {
-    if ( m_hasFocus )
-    {
-        // don't do anything if we already have focus
-        return;
-    }
-
-    gtk_widget_grab_focus( m_focusWidget );
-}
-
-int wxComboBox::DoAppend( const wxString &item )
-{
-    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        gtk_combo_box_append_text( combobox,  wxGTK_CONV( item ) );
-    }
-    else
-#endif
-    {
-        DisableEvents();
-
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-        GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
-
-        gtk_container_add( GTK_CONTAINER(list), list_item );
-
-        if (GTK_WIDGET_REALIZED(m_widget))
-        {
-            gtk_widget_realize( list_item );
-            gtk_widget_realize( GTK_BIN(list_item)->child );
-        }
-
-        // Apply current widget style to the new list_item
-        GtkRcStyle *style = CreateWidgetStyle();
-        if (style)
-        {
-            gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
-            GtkBin *bin = GTK_BIN( list_item );
-            GtkWidget *label = GTK_WIDGET( bin->child );
-            gtk_widget_modify_style( label, style );
-            gtk_rc_style_unref( style );
-        }
-
-        gtk_widget_show( list_item );
-
-        EnableEvents();
-    }
-
-    const unsigned int count = GetCount();
-
-    if ( m_clientDataList.GetCount() < count )
-        m_clientDataList.Append( (wxObject*) NULL );
-    if ( m_clientObjectList.GetCount() < count )
-        m_clientObjectList.Append( (wxObject*) NULL );
-
-    InvalidateBestSize();
-
-    return count - 1;
-}
-
-int wxComboBox::DoInsert(const wxString &item, unsigned int pos)
-{
-    wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
-                    wxT("can't insert into sorted list"));
-
-    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
-    wxCHECK_MSG( IsValidInsert(pos), -1, wxT("invalid index") );
-
-    unsigned int count = GetCount();
-
-    if (pos == count)
-        return Append(item);
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        gtk_combo_box_insert_text( combobox, pos, wxGTK_CONV( item ) );
-    }
-    else
-#endif
-    {
-        DisableEvents();
-
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-        GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
-
-        GList *gitem_list = g_list_alloc ();
-        gitem_list->data = list_item;
-        gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
-
-        if (GTK_WIDGET_REALIZED(m_widget))
-        {
-            gtk_widget_realize( list_item );
-            gtk_widget_realize( GTK_BIN(list_item)->child );
-
-            ApplyWidgetStyle();
-        }
-
-        gtk_widget_show( list_item );
-
-        EnableEvents();
-    }
-
-    count = GetCount();
-
-    if ( m_clientDataList.GetCount() < count )
-        m_clientDataList.Insert( pos, (wxObject*) NULL );
-    if ( m_clientObjectList.GetCount() < count )
-        m_clientObjectList.Insert( pos, (wxObject*) NULL );
-
-    InvalidateBestSize();
-
-    return pos;
-}
-
-void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    wxList::compatibility_iterator node = m_clientDataList.Item( n );
-    if (!node) return;
-
-    node->SetData( (wxObject*) clientData );
-}
-
-void* wxComboBox::DoGetItemClientData(unsigned int n) const
-{
-    wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
-
-    wxList::compatibility_iterator node = m_clientDataList.Item( n );
-
-    return node ? node->GetData() : NULL;
-}
-
-void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    wxList::compatibility_iterator node = m_clientObjectList.Item( n );
-    if (!node) return;
-
-    // wxItemContainer already deletes data for us
-
-    node->SetData( (wxObject*) clientData );
-}
-
-wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
-{
-    wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
-
-    wxList::compatibility_iterator node = m_clientObjectList.Item( n );
-
-    return node ? (wxClientData*) node->GetData() : NULL;
-}
-
-void wxComboBox::Clear()
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    DisableEvents();
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        const unsigned int count = GetCount();
-        for (unsigned int i = 0; i < count; i++)
-            gtk_combo_box_remove_text( combobox, 0 );
-    }
-    else // GTK+ < 2.4.0
-#endif // __WXGTK24__
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-        gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
-    }
-
-    wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
-    while (node)
-    {
-        wxClientData *cd = (wxClientData*)node->GetData();
-        delete cd;
-        node = node->GetNext();
-    }
-    m_clientObjectList.Clear();
-
-    m_clientDataList.Clear();
-
-    EnableEvents();
-
-    InvalidateBestSize();
-}
-
-void wxComboBox::Delete(unsigned int n)
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        wxCHECK_RET( IsValid(n), wxT("invalid index") );
-
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        gtk_combo_box_remove_text( combobox, n );
-    }
-    else
-#endif
-    {
-        GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
-
-        GList *child = g_list_nth( listbox->children, n );
-
-        if (!child)
-        {
-            wxFAIL_MSG(wxT("wrong index"));
-            return;
-        }
-
-        DisableEvents();
-
-        GList *list = g_list_append( (GList*) NULL, child->data );
-        gtk_list_remove_items( listbox, list );
-        g_list_free( list );
-
-        EnableEvents();
-    }
-
-    wxList::compatibility_iterator node = m_clientObjectList.Item( n );
-    if (node)
-    {
-        wxClientData *cd = (wxClientData*)node->GetData();
-        if (cd) delete cd;
-        m_clientObjectList.Erase( node );
-    }
-
-    node = m_clientDataList.Item( n );
-    if (node)
-        m_clientDataList.Erase( node );
-
-    InvalidateBestSize();
-}
-
-void wxComboBox::SetString(unsigned int n, const wxString &text)
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        wxCHECK_RET( IsValid(n), wxT("invalid index") );
-
-        GtkTreeModel *model = gtk_combo_box_get_model( combobox );
-        GtkTreeIter iter;
-        if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
-        {
-            GValue value = { 0, };
-            g_value_init( &value, G_TYPE_STRING );
-            g_value_set_string( &value, wxGTK_CONV( text ) );
-            gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, 0, &value );
-            g_value_unset( &value );
-        }
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *child = g_list_nth( GTK_LIST(list)->children, n );
-        if (child)
-        {
-            GtkBin *bin = GTK_BIN( child->data );
-            GtkLabel *label = GTK_LABEL( bin->child );
-            gtk_label_set_text(label, wxGTK_CONV(text));
-        }
-        else
-        {
-            wxFAIL_MSG( wxT("wxComboBox: wrong index") );
-        }
-    }
-
-    InvalidateBestSize();
-}
-
-int wxComboBox::FindString( const wxString &item, bool bCase ) const
-{
-    wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        GtkTreeModel* model = gtk_combo_box_get_model( combobox );
-        GtkTreeIter iter;
-        gtk_tree_model_get_iter_first( model, &iter );
-        if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
-            return -1;
-        int count = 0;
-        do
-        {
-            GValue value = { 0, };
-            gtk_tree_model_get_value( model, &iter, 0, &value );
-            wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) );
-            g_value_unset( &value );
-
-            if (item.IsSameAs( str, bCase ) )
-                return count;
-
-            count++;
-
-        } while (gtk_tree_model_iter_next( model, &iter ));
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *child = GTK_LIST(list)->children;
-        int count = 0;
-        while (child)
-        {
-            GtkBin *bin = GTK_BIN( child->data );
-            GtkLabel *label = GTK_LABEL( bin->child );
-            wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
-
-            if (item.IsSameAs( str , bCase ) )
-                return count;
-
-            count++;
-            child = child->next;
-        }
-    }
-
-    return wxNOT_FOUND;
-}
-
-int wxComboBox::GetSelection() const
-{
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        return gtk_combo_box_get_active( combobox );
-    }
-    else
-#endif
-        // if the popup is currently opened, use the selection as it had been
-        // before it dropped down
-        return g_SelectionBeforePopup == wxID_NONE ? GetCurrentSelection()
-                                               : g_SelectionBeforePopup;
-}
-
-int wxComboBox::GetCurrentSelection() const
-{
-    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        return gtk_combo_box_get_active( combobox );
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *selection = GTK_LIST(list)->selection;
-        if (selection)
-        {
-            GList *child = GTK_LIST(list)->children;
-            int count = 0;
-            while (child)
-            {
-                if (child->data == selection->data) return count;
-                count++;
-                child = child->next;
-            }
-        }
-    }
-
-    return -1;
-}
-
-wxString wxComboBox::GetString(unsigned int n) const
-{
-    wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
-
-    wxString str;
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        GtkTreeModel *model = gtk_combo_box_get_model( combobox );
-        GtkTreeIter iter;
-        if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
-        {
-            GValue value = { 0, };
-            gtk_tree_model_get_value( model, &iter, 0, &value );
-            wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) );
-            g_value_unset( &value );
-            return tmp;
-        }
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *child = g_list_nth( GTK_LIST(list)->children, n );
-        if (child)
-        {
-            GtkBin *bin = GTK_BIN( child->data );
-            GtkLabel *label = GTK_LABEL( bin->child );
-            str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
-        }
-        else
-        {
-            wxFAIL_MSG( wxT("wxComboBox: wrong index") );
-        }
-    }
-
-    return str;
-}
-
-wxString wxComboBox::GetStringSelection() const
-{
-    wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        int sel = gtk_combo_box_get_active( combobox );
-        if (sel == -1)
-            return wxEmptyString;
-        return GetString(sel);
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *selection = GTK_LIST(list)->selection;
-        if (selection)
-        {
-            GtkBin *bin = GTK_BIN( selection->data );
-            GtkLabel *label = GTK_LABEL( bin->child );
-            wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
-            return tmp;
-        }
-
-        wxFAIL_MSG( wxT("wxComboBox: no selection") );
-    }
-
-    return wxEmptyString;
-}
-
-unsigned int wxComboBox::GetCount() const
-{
-    wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        GtkTreeModel* model = gtk_combo_box_get_model( combobox );
-        GtkTreeIter iter;
-        gtk_tree_model_get_iter_first( model, &iter );
-        if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
-            return 0;
-        unsigned int ret = 1;
-        while (gtk_tree_model_iter_next( model, &iter ))
-            ret++;
-        return ret;
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-
-        GList *child = GTK_LIST(list)->children;
-        unsigned int count = 0;
-        while (child)
-        {
-            count++;
-            child = child->next;
-        }
-        return count;
-    }
-
-    return 0;
-}
-
-void wxComboBox::SetSelection( int n )
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    DisableEvents();
-
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
-        gtk_combo_box_set_active( combobox, n );
-    }
-    else
-#endif
-    {
-        GtkWidget *list = GTK_COMBO(m_widget)->list;
-        gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
-        gtk_list_select_item( GTK_LIST(list), n );
-        m_prevSelection = n;
-    }
-
-    EnableEvents();
-}
-
-wxString wxComboBox::GetValue() const
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
-
-#if 0
-    for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
-    {
-        wxChar c = tmp[i];
-        printf( "%d ", (int) (c) );
-    }
-    printf( "\n" );
-#endif
-
-    return tmp;
-}
-
-void wxComboBox::SetValue( const wxString& value )
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    wxString tmp;
-    if (!value.IsNull()) tmp = value;
-    gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
-
-    InvalidateBestSize();
-}
-
-void wxComboBox::Copy()
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_editable_copy_clipboard(GTK_EDITABLE(entry));
-}
-
-void wxComboBox::Cut()
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_editable_cut_clipboard(GTK_EDITABLE(entry));
-}
-
-void wxComboBox::Paste()
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_editable_paste_clipboard(GTK_EDITABLE(entry));
-}
-
-void wxComboBox::Undo()
-{
-    // TODO
-}
-
-void wxComboBox::Redo()
-{
-    // TODO
-}
-
-void wxComboBox::SelectAll()
-{
-    SetSelection(0, GetLastPosition());
-}
-
-bool wxComboBox::CanUndo() const
-{
-    // TODO
-    return false;
-}
-
-bool wxComboBox::CanRedo() const
-{
-    // TODO
-    return false;
-}
-
-bool wxComboBox::HasSelection() const
-{
-    long from, to;
-    GetSelection(&from, &to);
-    return from != to;
-}
-
-bool wxComboBox::CanCopy() const
-{
-    // Can copy if there's a selection
-    return HasSelection();
-}
-
-bool wxComboBox::CanCut() const
-{
-    return CanCopy() && IsEditable();
-}
-
-bool wxComboBox::CanPaste() const
-{
-    // TODO: check for text on the clipboard
-    return IsEditable() ;
-}
-
-bool wxComboBox::IsEditable() const
-{
-    return !HasFlag(wxCB_READONLY);
-}
-
-
-void wxComboBox::SetInsertionPoint( long pos )
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    if ( pos == GetLastPosition() )
-        pos = -1;
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_entry_set_position( entry, (int)pos );
-}
-
-long wxComboBox::GetInsertionPoint() const
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    return (long) gtk_editable_get_position(GTK_EDITABLE(entry));
-}
-
-wxTextPos wxComboBox::GetLastPosition() const
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    int pos = entry->text_length;
-    return (long) pos-1;
-}
-
-void wxComboBox::Replace( long from, long to, const wxString& value )
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
-
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
-    if (value.IsNull()) return;
-    gint pos = (gint)to;
-
-#if wxUSE_UNICODE
-    wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
-    gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
-#else
-    gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.length(), &pos );
-#endif
-}
-
-void wxComboBox::SetSelection( long from, long to )
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
-}
-
-void wxComboBox::GetSelection( long* from, long* to ) const
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    if (IsEditable())
-    {
-        GtkEditable *editable = GTK_EDITABLE(entry);
-        gint start, end;
-        gtk_editable_get_selection_bounds(editable, & start, & end);
-        *from = start;
-        *to = end;
-    }
-}
-
-void wxComboBox::SetEditable( bool editable )
-{
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    gtk_entry_set_editable( GTK_ENTRY(entry), editable );
+    return GTK_EDITABLE( GTK_BIN(m_widget)->child );
 }
 
 void wxComboBox::OnChar( wxKeyEvent &event )
 {
-    if ( event.GetKeyCode() == WXK_RETURN )
+    switch ( event.GetKeyCode() )
     {
-        // GTK automatically selects an item if its in the list
-        wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
-        eventEnter.SetString( GetValue() );
-        eventEnter.SetInt( GetSelection() );
-        eventEnter.SetEventObject( this );
-
-        if (!GetEventHandler()->ProcessEvent( eventEnter ))
-        {
-            // This will invoke the dialog default action, such
-            // as the clicking the default button.
-
-            wxWindow *top_frame = m_parent;
-            while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
-                top_frame = top_frame->GetParent();
-
-            if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
+        case WXK_RETURN:
+            if ( HasFlag(wxTE_PROCESS_ENTER) && GetEntry() )
             {
-                GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
-
-                if (window->default_widget)
-                        gtk_widget_activate (window->default_widget);
+                // GTK automatically selects an item if its in the list
+                wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
+                eventEnter.SetString( GetValue() );
+                eventEnter.SetInt( GetSelection() );
+                eventEnter.SetEventObject( this );
+
+                if ( HandleWindowEvent(eventEnter) )
+                {
+                    // Catch GTK event so that GTK doesn't open the drop
+                    // down list upon RETURN.
+                    return;
+                }
             }
-        }
-
-        // Catch GTK event so that GTK doesn't open the drop
-        // down list upon RETURN.
-        return;
+            break;
     }
 
     event.Skip();
@@ -1220,170 +194,41 @@ void wxComboBox::OnChar( wxKeyEvent &event )
 
 void wxComboBox::DisableEvents()
 {
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        g_signal_handlers_disconnect_by_func (GTK_BIN(m_widget)->child,
-                (gpointer)gtkcombobox_text_changed_callback, this);
+    if ( GetEntry() )
+        g_signal_handlers_block_by_func(GTK_BIN(m_widget)->child,
+            (gpointer)gtkcombobox_text_changed_callback, this);
 
-        g_signal_handlers_disconnect_by_func (m_widget,
-                (gpointer)gtkcombobox_changed_callback, this);
-    }
-    else
-#endif
-    {
-        g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->list,
-                (gpointer) gtkcombo_combo_select_child_callback, this);
-
-        g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->entry,
-                (gpointer) gtkcombo_text_changed_callback, this);
-    }
+    g_signal_handlers_block_by_func(m_widget,
+        (gpointer)gtkcombobox_changed_callback, this);
 }
 
 void wxComboBox::EnableEvents()
 {
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        g_signal_connect_after (GTK_BIN(m_widget)->child, "changed",
-                            G_CALLBACK (gtkcombobox_text_changed_callback), this);
-
-        g_signal_connect_after (m_widget, "changed",
-                            G_CALLBACK (gtkcombobox_changed_callback), this);
-    }
-    else
-#endif
-    {
-        g_signal_connect_after (GTK_COMBO(m_widget)->list, "select-child",
-                            G_CALLBACK (gtkcombo_combo_select_child_callback),
-                            this);
-        g_signal_connect_after (GTK_COMBO(m_widget)->entry, "changed",
-                            G_CALLBACK (gtkcombo_text_changed_callback),
-                            this );
-    }
-}
-
-void wxComboBox::OnSize( wxSizeEvent &event )
-{
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        // Do nothing
-    }
-    else
-#endif
-    {
-        // NB: In some situations (e.g. on non-first page of a wizard, if the
-        //     size used is default size), GtkCombo widget is resized correctly,
-        //     but it's look is not updated, it's rendered as if it was much wider.
-        //     No other widgets are affected, so it looks like a bug in GTK+.
-        //     Manually requesting resize calculation (as gtk_pizza_set_size does)
-        //     fixes it.
-        if (GTK_WIDGET_VISIBLE(m_widget))
-            gtk_widget_queue_resize(m_widget);
-    }
-
-    event.Skip();
-}
-
-void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
-{
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        // Do nothing
-    }
-    else
-#endif
-    {
-//    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
+    if ( GetEntry() )
+        g_signal_handlers_unblock_by_func(GTK_BIN(m_widget)->child,
+            (gpointer)gtkcombobox_text_changed_callback, this);
 
-        gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
-        gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
-
-        GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
-        GList *child = list->children;
-        while (child)
-        {
-            gtk_widget_modify_style( GTK_WIDGET(child->data), style );
-
-            GtkBin *bin = GTK_BIN(child->data);
-            gtk_widget_modify_style( bin->child, style );
-
-            child = child->next;
-        }
-    }
+    g_signal_handlers_unblock_by_func(m_widget,
+        (gpointer)gtkcombobox_changed_callback, this);
 }
 
 GtkWidget* wxComboBox::GetConnectWidget()
 {
-    GtkEntry *entry = NULL;
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
-    else
-#endif
-        entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
-
-    return GTK_WIDGET( entry );
+    return GTK_WIDGET( GetEntry() );
 }
 
 GdkWindow *wxComboBox::GTKGetWindow(wxArrayGdkWindows& windows) const
 {
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-    {
-        wxUnusedVar(windows);
-
-        return GTK_ENTRY(GTK_BIN(m_widget)->child)->text_area;
-    }
-    else
-#endif // GTK+ 2.4
-    {
-        windows.push_back(GTK_ENTRY(GTK_COMBO(m_widget)->entry)->text_area);
-        windows.push_back(GTK_COMBO(m_widget)->button->window);
-
-        // indicate that we return multiple windows in the windows array
-        return NULL;
-    }
-}
-
-wxSize wxComboBox::DoGetBestSize() const
-{
-    wxSize ret( wxControl::DoGetBestSize() );
-
-    // we know better our horizontal extent: it depends on the longest string
-    // in the combobox
-    if ( m_widget )
-    {
-        int width;
-        unsigned int count = GetCount();
-        for ( unsigned int n = 0; n < count; n++ )
-        {
-            GetTextExtent(GetString(n), &width, NULL, NULL, NULL );
-            if ( width > ret.x )
-                ret.x = width;
-        }
-    }
+    wxUnusedVar(windows);
 
-    // empty combobox should have some reasonable default size too
-    if ( ret.x < 100 )
-        ret.x = 100;
-
-    CacheBestSize(ret);
-    return ret;
+    return GetEntry()->text_area;
 }
 
 // static
 wxVisualAttributes
 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 {
-#ifdef __WXGTK24__
-    if (!gtk_check_version(2,4,0))
-        return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
-    else
-#endif
-        return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
+    return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
 }
 
 // ----------------------------------------------------------------------------
@@ -1417,15 +262,12 @@ void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
 
 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
 {
-    long from, to;
-    GetSelection(& from, & to);
-    if (from != -1 && to != -1)
-        Remove(from, to);
+    RemoveSelection();
 }
 
 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 {
-    SetSelection(-1, -1);
+    SelectAll();
 }
 
 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
@@ -1460,7 +302,7 @@ void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
 
 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
 {
-    event.Enable(GetLastPosition() > 0);
+    event.Enable(!wxTextEntry::IsEmpty());
 }
 
-#endif
+#endif // wxUSE_COMBOBOX