X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fc54776e31f04962739980d6cdcc894bb87a9c53..da07e0335e1a75d785a1b0f61b26aab7e48aa51e:/src/gtk1/combobox.cpp

diff --git a/src/gtk1/combobox.cpp b/src/gtk1/combobox.cpp
index efe78a6f3f..499e2153d9 100644
--- a/src/gtk1/combobox.cpp
+++ b/src/gtk1/combobox.cpp
@@ -2,9 +2,8 @@
 // Name:        combobox.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling
 // Licence:   	wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -12,9 +11,14 @@
 #pragma implementation "combobox.h"
 #endif
 
+
 #include "wx/combobox.h"
+
 #include <wx/intl.h>
 
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"
+
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
@@ -27,23 +31,23 @@ extern bool   g_blockEventsOnDrag;
 
 static void gtk_combo_clicked_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
-  if (!combo->HasVMT()) return;
-  if (g_blockEventsOnDrag) return;
+    if (!combo->HasVMT()) return;
+    if (g_blockEventsOnDrag) return;
   
-  if (combo->m_alreadySent)
-  {
-    combo->m_alreadySent = FALSE;
-    return;
-  }
+    if (combo->m_alreadySent)
+    {
+        combo->m_alreadySent = FALSE;
+        return;
+    }
 
-  combo->m_alreadySent = TRUE;
+    combo->m_alreadySent = TRUE;
   
-  wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, combo->GetId());
-  event.SetInt( combo->GetSelection() );
-  wxString tmp( combo->GetStringSelection() );
-  event.SetString( WXSTRINGCAST(tmp) );
-  event.SetEventObject(combo);
-  combo->GetEventHandler()->ProcessEvent(event);
+    wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, combo->GetId());
+    event.SetInt( combo->GetSelection() );
+    wxString tmp( combo->GetStringSelection() );
+    event.SetString( WXSTRINGCAST(tmp) );
+    event.SetEventObject(combo);
+    combo->GetEventHandler()->ProcessEvent(event);
 }
 
 //-----------------------------------------------------------------------------
@@ -53,397 +57,487 @@ static void gtk_combo_clicked_callback( GtkWidget *WXUNUSED(widget), wxComboBox
 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 
 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
-  EVT_SIZE(wxComboBox::OnSize)
+    EVT_SIZE(wxComboBox::OnSize)
 END_EVENT_TABLE()
 
-bool wxComboBox::Create(wxWindow *parent, wxWindowID id, const wxString& value,
-  const wxPoint& pos, const wxSize& size,
-  int n, const wxString choices[],
-  long style, const wxValidator& validator, const wxString& name )
+bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
+                         const wxPoint& pos, const wxSize& size,
+                         int n, const wxString choices[],
+                         long style, const wxValidator& validator, 
+			 const wxString& name )
 {
-  m_alreadySent = FALSE;
-  m_needParent = TRUE;
+    m_alreadySent = FALSE;
+    m_needParent = TRUE;
+    m_acceptsFocus = TRUE;
   
-  PreCreation( parent, id, pos, size, style, name );
+    PreCreation( parent, id, pos, size, style, name );
   
-  SetValidator( validator );
+    SetValidator( validator );
 
-  m_widget = gtk_combo_new();
+    m_widget = gtk_combo_new();
   
-  wxSize newSize = size;
-  if (newSize.x == -1) newSize.x = 100;
-  if (newSize.y == -1) newSize.y = 26;
-  SetSize( newSize.x, newSize.y );
+    wxSize newSize = size;
+    if (newSize.x == -1) newSize.x = 100;
+    if (newSize.y == -1) newSize.y = 26;
+    SetSize( newSize.x, newSize.y );
   
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
   
-  for (int i = 0; i < n; i++)
-  {
-    GtkWidget *list_item;
-    list_item = gtk_list_item_new_with_label( choices[i] ); 
+    for (int i = 0; i < n; i++)
+    {
+        GtkWidget *list_item = gtk_list_item_new_with_label( choices[i] ); 
   
-    gtk_container_add( GTK_CONTAINER(list), list_item );
+        m_clientDataList.Append( (wxObject*)NULL );
+        m_clientObjectList.Append( (wxObject*)NULL );
     
-    m_clientData.Append( (wxObject*)NULL );
+        gtk_container_add( GTK_CONTAINER(list), list_item );
     
-    gtk_widget_show( list_item );
+        gtk_widget_realize( list_item );
+        gtk_widget_realize( GTK_BIN(list_item)->child );
     
-    gtk_signal_connect( GTK_OBJECT(list_item), "select", 
-      GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
-  }
+        gtk_widget_show( list_item );
+    
+        gtk_signal_connect( GTK_OBJECT(list_item), "select", 
+        GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
+    }
   
-  PostCreation();
+    m_parent->AddChild( this );
 
-  ConnectWidget( GTK_COMBO(m_widget)->button );
+    (m_parent->m_insertCallback)( m_parent, this );
   
-  if (!value.IsNull()) SetValue( value );
-    
-  Show( TRUE );
-    
-  return TRUE;
-}
+    PostCreation();
 
-void wxComboBox::Clear(void)
-{
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
-  gtk_list_clear_items( GTK_LIST(list), 0, Number() );
+    ConnectWidget( GTK_COMBO(m_widget)->button );
+  
+    if (!value.IsNull()) SetValue( value );
+    
+    gtk_widget_realize( GTK_COMBO(m_widget)->list );
+    gtk_widget_realize( GTK_COMBO(m_widget)->entry );
+    gtk_widget_realize( GTK_COMBO(m_widget)->button );
   
-  m_clientData.Clear();
+    SetBackgroundColour( parent->GetBackgroundColour() );
+    SetForegroundColour( parent->GetForegroundColour() );
+
+    Show( TRUE );
+    
+    return TRUE;
 }
 
-void wxComboBox::Append( const wxString &item )
+wxComboBox::~wxComboBox()
 {
-  Append( item, (char*)NULL );
+    wxNode *node = m_clientDataList.First();
+    while (node)
+    {
+        wxClientData *cd = (wxClientData*)node->Data();
+        if (cd) delete cd;
+        node = node->Next();
+    }
+    m_clientDataList.Clear();
 }
 
-void wxComboBox::Append( const wxString &item, char *clientData )
+void wxComboBox::AppendCommon( const wxString &item )
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
   
-  GtkWidget *list_item = gtk_list_item_new_with_label( item ); 
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
   
-  if (m_hasOwnStyle)
-  {
-    GtkBin *bin = GTK_BIN( list_item );
-    gtk_widget_set_style( bin->child, 
-      gtk_style_ref(
-        gtk_widget_get_style( m_widget ) ) ); 
-  }
+    GtkWidget *list_item = gtk_list_item_new_with_label( item ); 
   
-  if (m_backgroundColour != wxNullColour)
-  {
-    GtkBin *bin = GTK_BIN( list_item );
-    SetBackgroundColourHelper( bin->child->window );
-  }
+    gtk_signal_connect( GTK_OBJECT(list_item), "select", 
+      GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
   
-  gtk_signal_connect( GTK_OBJECT(list_item), "select", 
-    GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
+    gtk_container_add( GTK_CONTAINER(list), list_item );
+    
+    if (m_widgetStyle) ApplyWidgetStyle();
   
-  m_clientData.Append( (wxObject*)clientData );
+    gtk_widget_show( list_item );
+}
+
+void wxComboBox::Append( const wxString &item )
+{
+    m_clientDataList.Append( (wxObject*) NULL );
+    m_clientObjectList.Append( (wxObject*) NULL );
   
-  gtk_container_add( GTK_CONTAINER(list), list_item );
-    
-  gtk_widget_show( list_item );
+    AppendCommon( item );
 }
 
-void wxComboBox::Delete( int n )
+void wxComboBox::Append( const wxString &item, void *clientData )
 {
-  GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
+    m_clientDataList.Append( (wxObject*) clientData );
+    m_clientObjectList.Append( (wxObject*)NULL );
   
-  GList *child = g_list_nth( listbox->children, n );
+    AppendCommon( item );
+}
+
+void wxComboBox::Append( const wxString &item, wxClientData *clientData )
+{
+    m_clientDataList.Append( (wxObject*) NULL );
+    m_clientObjectList.Append( (wxObject*) clientData );
   
-  if (!child)
-  {
-    wxFAIL_MSG("wrong index");
-    return;
-  }
+    AppendCommon( item );
+}
+
+void wxComboBox::SetClientData( int n, void* clientData )
+{
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
   
-  GList *list = g_list_append( NULL, child->data );
-  gtk_list_remove_items( listbox, list );
-  g_list_free( list );
+    wxNode *node = m_clientDataList.Nth( n );
+    if (!node) return;
   
-  wxNode *node = m_clientData.Nth( n );
-  if (!node)
-  {
-    wxFAIL_MSG( "wrong index" );
-  }
-  else
-    m_clientData.DeleteNode( node );
+    node->SetData( (wxObject*) clientData );
 }
 
-int wxComboBox::FindString( const wxString &item )
+void* wxComboBox::GetClientData( int n )
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_MSG( m_widget != NULL, NULL, "invalid combobox" );
   
-  GList *child = GTK_LIST(list)->children;
-  int count = 0;
-  while (child)
-  {
-    GtkBin *bin = GTK_BIN( child->data );
-    GtkLabel *label = GTK_LABEL( bin->child );
-    if (item == label->label) return count;
-    count++;
-    child = child->next;
-  }
+    wxNode *node = m_clientDataList.Nth( n );
+    if (!node) return NULL;
+    
+    return node->Data();
+}
+
+void wxComboBox::SetClientObject( int n, wxClientData* clientData )
+{
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+    
+    wxNode *node = m_clientObjectList.Nth( n );
+    if (!node) return;
   
-  wxFAIL_MSG( "wxComboBox: string not found" );
+    wxClientData *cd = (wxClientData*) node->Data();
+    if (cd) delete cd;
+    
+    node->SetData( (wxObject*) clientData );
+}
+
+wxClientData* wxComboBox::GetClientObject( int n )
+{
+    wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, "invalid combobox" );
   
-  return -1;
+    wxNode *node = m_clientDataList.Nth( n );
+    if (!node) return (wxClientData*) NULL;
+    
+    return (wxClientData*) node->Data();
 }
 
-char* wxComboBox::GetClientData( int n )
+void wxComboBox::Clear()
 {
-  wxNode *node = m_clientData.Nth( n );
-  if (node) return (char*)node->Data();
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
   
-  wxFAIL_MSG( "wxComboBox: wrong index" );
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
+    gtk_list_clear_items( GTK_LIST(list), 0, Number() );
   
-  return (char *) NULL;
+    wxNode *node = m_clientObjectList.First();
+    while (node)
+    {
+        wxClientData *cd = (wxClientData*)node->Data();
+        if (cd) delete cd;
+        node = node->Next();
+    }
+    m_clientObjectList.Clear();
+    
+    m_clientDataList.Clear();
 }
 
-void wxComboBox::SetClientData( int n, char * clientData )
+void wxComboBox::Delete( int n )
 {
-  wxNode *node = m_clientData.Nth( n );
-  if (node) node->SetData( (wxObject*) clientData );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
+  
+    GList *child = g_list_nth( listbox->children, n );
+  
+    if (!child)
+    {
+        wxFAIL_MSG("wrong index");
+        return;
+    }
+  
+    GList *list = g_list_append( (GList*) NULL, child->data );
+    gtk_list_remove_items( listbox, list );
+    g_list_free( list );
   
-  wxFAIL_MSG( "wxComboBox: wrong index" );
+    wxNode *node = m_clientObjectList.Nth( n );
+    if (node)
+    {
+        wxClientData *cd = (wxClientData*)node->Data();
+        if (cd) delete cd;
+        m_clientObjectList.DeleteNode( node );
+    }
+    
+    node = m_clientDataList.Nth( n );
+    if (node)
+    {
+        m_clientDataList.DeleteNode( node );
+    }
 }
 
-int wxComboBox::GetSelection(void) const
+int wxComboBox::FindString( const wxString &item )
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
+  
+    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;
+        GtkBin *bin = GTK_BIN( child->data );
+        GtkLabel *label = GTK_LABEL( bin->child );
+        if (item == label->label) return count;
+        count++;
+        child = child->next;
     }
-  }
   
-  wxFAIL_MSG( "wxComboBox: no selection" );
+    wxFAIL_MSG( "wxComboBox: string not found" );
   
-  return -1;
+    return -1;
+}
+
+int wxComboBox::GetSelection() const
+{
+    wxCHECK_MSG( m_widget != NULL, -1, "invalid combobox" );
+  
+    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;
+        }
+    }
+  
+    wxFAIL_MSG( "wxComboBox: no selection" );
+  
+    return -1;
 }
 
 wxString wxComboBox::GetString( int n ) const
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
+  
+    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 );
-    return label->label;
-  }
+    GList *child = g_list_nth( GTK_LIST(list)->children, n );
+    if (child)
+    {
+        GtkBin *bin = GTK_BIN( child->data );
+        GtkLabel *label = GTK_LABEL( bin->child );
+        return label->label;
+    }
   
-  wxFAIL_MSG( "wxComboBox: wrong index" );
+    wxFAIL_MSG( "wxComboBox: wrong index" );
   
-  return "";
+    return "";
 }
 
-wxString wxComboBox::GetStringSelection(void) const
+wxString wxComboBox::GetStringSelection() const
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_MSG( m_widget != NULL, "", "invalid combobox" );
   
-  GList *selection = GTK_LIST(list)->selection;
-  if (selection)
-  {
-    GtkBin *bin = GTK_BIN( selection->data );
-    wxString tmp = GTK_LABEL( bin->child )->label;
-    return tmp;
-  }
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
   
-  wxFAIL_MSG( "wxComboBox: no selection" );
+    GList *selection = GTK_LIST(list)->selection;
+    if (selection)
+    {
+        GtkBin *bin = GTK_BIN( selection->data );
+        wxString tmp = GTK_LABEL( bin->child )->label;
+        return tmp;
+    }
   
-  return "";
+    wxFAIL_MSG( "wxComboBox: no selection" );
+  
+    return "";
 }
 
-int wxComboBox::Number(void) const
+int wxComboBox::Number() const
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    wxCHECK_MSG( m_widget != NULL, 0, "invalid combobox" );
+  
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
   
-  GList *child = GTK_LIST(list)->children;
-  int count = 0;
-  while (child) { count++; child = child->next; }
-  return count;
+    GList *child = GTK_LIST(list)->children;
+    int count = 0;
+    while (child) { count++; child = child->next; }
+    return count;
 }
 
 void wxComboBox::SetSelection( int n )
 {
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
-  gtk_list_select_item( GTK_LIST(list), n );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *list = GTK_COMBO(m_widget)->list;
+    gtk_list_select_item( GTK_LIST(list), n );
 }
 
 void wxComboBox::SetStringSelection( const wxString &string )
 {
-  int res = FindString( string );
-  if (res == -1) return;
-  SetSelection( res );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    int res = FindString( string );
+    if (res == -1) return;
+    SetSelection( res );
 }
 
-wxString wxComboBox::GetValue(void) const
+wxString wxComboBox::GetValue() const
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  wxString tmp = gtk_entry_get_text( GTK_ENTRY(entry) );
-  return tmp;
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    wxString tmp = gtk_entry_get_text( GTK_ENTRY(entry) );
+    return tmp;
 }
 
 void wxComboBox::SetValue( const wxString& value )
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  wxString tmp = "";
-  if (!value.IsNull()) tmp = value;
-  gtk_entry_set_text( GTK_ENTRY(entry), tmp );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    wxString tmp = "";
+    if (!value.IsNull()) tmp = value;
+    gtk_entry_set_text( GTK_ENTRY(entry), tmp );
 }
 
-void wxComboBox::Copy(void)
+void wxComboBox::Copy()
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 #if (GTK_MINOR_VERSION == 1)
-  gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
+    gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
 #else
-  gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
+    gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
 #endif
 }
 
-void wxComboBox::Cut(void)
+void wxComboBox::Cut()
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 #if (GTK_MINOR_VERSION == 1)
-  gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
+    gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
 #else
-  gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
+    gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
 #endif
 }
 
-void wxComboBox::Paste(void)
+void wxComboBox::Paste()
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 #if (GTK_MINOR_VERSION == 1)
-  gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
+    gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
 #else
-  gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
+    gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
 #endif
 }
 
 void wxComboBox::SetInsertionPoint( long pos )
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  int tmp = (int) pos;
-  gtk_entry_set_position( GTK_ENTRY(entry), tmp );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    int tmp = (int) pos;
+    gtk_entry_set_position( GTK_ENTRY(entry), tmp );
 }
 
-void wxComboBox::SetInsertionPointEnd(void)
+void wxComboBox::SetInsertionPointEnd()
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  int pos = GTK_ENTRY(entry)->text_length;
-  SetInsertionPoint( pos-1 );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    int pos = GTK_ENTRY(entry)->text_length;
+    SetInsertionPoint( pos-1 );
 }
 
-long wxComboBox::GetInsertionPoint(void) const
+long wxComboBox::GetInsertionPoint() const
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  return (long) GTK_EDITABLE(entry)->current_pos;
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    return (long) GTK_EDITABLE(entry)->current_pos;
 }
 
-long wxComboBox::GetLastPosition(void) const
+long wxComboBox::GetLastPosition() const
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  int pos = GTK_ENTRY(entry)->text_length;
-  return (long) pos-1;
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    int pos = GTK_ENTRY(entry)->text_length;
+    return (long) pos-1;
 }
 
 void wxComboBox::Replace( long from, long to, const wxString& value )
 {
-  GtkWidget *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;
-  gtk_editable_insert_text( GTK_EDITABLE(entry), value, value.Length(), &pos );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *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;
+    gtk_editable_insert_text( GTK_EDITABLE(entry), value, value.Length(), &pos );
 }
 
 void wxComboBox::Remove(long from, long to)
 {
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
-  gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
+    wxCHECK_RET( m_widget != NULL, "invalid combobox" );
+  
+    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 }
 
 void wxComboBox::SetSelection( long WXUNUSED(from), long WXUNUSED(to) )
 {
-  wxFAIL_MSG( "wxComboBox::SetSelection not implemented" );
+    wxFAIL_MSG( "wxComboBox::SetSelection not implemented" );
 }
 
 void wxComboBox::SetEditable( bool WXUNUSED(editable) )
 {
-  wxFAIL_MSG( "wxComboBox::SetEditable not implemented" );
+    wxFAIL_MSG( "wxComboBox::SetEditable not implemented" );
 }
 
 void wxComboBox::OnSize( wxSizeEvent &event )
 {
-  wxControl::OnSize( event );
+    wxControl::OnSize( event );
   
-  int w = 22;
+    int w = 21;
+    gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
   
-  gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
-  
-  gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
-  gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
+    gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
+    gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 }
 
-void wxComboBox::SetFont( const wxFont &font )
+void wxComboBox::ApplyWidgetStyle()
 {
-  wxWindow::SetFont( font );
-   
-  GtkWidget *entry = GTK_COMBO(m_widget)->entry;
+    SetWidgetStyle();
   
-  gtk_widget_set_style( entry,
-    gtk_style_ref(
-      gtk_widget_get_style( m_widget ) ) ); 
+    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
+    gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
+    gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
   
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
+    GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
+    GList *child = list->children;
+    while (child)
+    {
+        gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
   
-  GList *child = GTK_LIST(list)->children;
-  while (child)
-  {
-    GtkBin *bin = (GtkBin*) child->data;
-    gtk_widget_set_style( bin->child, 
-      gtk_style_ref(
-        gtk_widget_get_style( m_widget ) ) ); 
+        GtkBin *bin = GTK_BIN(child->data);
+        gtk_widget_set_style( bin->child, m_widgetStyle );
         
-    child = child->next;
-  }
+        child = child->next;
+    }
 }
 
-GtkWidget* wxComboBox::GetConnectWidget(void)
+GtkWidget* wxComboBox::GetConnectWidget()
 {
-  return GTK_COMBO(m_widget)->entry;
+    return GTK_COMBO(m_widget)->entry;
 }
 
 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 {
-  return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
-           (window == GTK_COMBO(m_widget)->button->window ) );
-}
-
-void wxComboBox::SetBackgroundColour( const wxColour &colour )
-{
-  wxWindow::SetBackgroundColour( colour );
-  
-  GtkWidget *list = GTK_COMBO(m_widget)->list;
-  
-  GList *child = GTK_LIST(list)->children;
-  while (child)
-  {
-    GtkBin *bin = (GtkBin*) child->data;
-    SetBackgroundColourHelper( bin->child->window );
-    child = child->next;
-  }
+    return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
+             (window == GTK_COMBO(m_widget)->button->window ) );
 }