diff --git a/include/wx/gtk/combobox.h b/include/wx/gtk/combobox.h
index c27d532b47..7265f891e5 100644
--- a/include/wx/gtk/combobox.h
+++ b/include/wx/gtk/combobox.h
@@ -122,7 +122,7 @@ public:
     bool CanUndo() const;
     bool CanRedo() const;
     void SelectAll();
-    bool IsEditable() const { return !HasFlag(wxCB_READONLY); }
+    bool IsEditable() const ;
     bool HasSelection() const ;
 
     // implementation
diff --git a/include/wx/gtk1/combobox.h b/include/wx/gtk1/combobox.h
index c27d532b47..7265f891e5 100644
--- a/include/wx/gtk1/combobox.h
+++ b/include/wx/gtk1/combobox.h
@@ -122,7 +122,7 @@ public:
     bool CanUndo() const;
     bool CanRedo() const;
     void SelectAll();
-    bool IsEditable() const { return !HasFlag(wxCB_READONLY); }
+    bool IsEditable() const ;
     bool HasSelection() const ;
 
     // implementation
diff --git a/src/gtk/combobox.cpp b/src/gtk/combobox.cpp
index 99e75910c2..9a1c2100bb 100644
--- a/src/gtk/combobox.cpp
+++ b/src/gtk/combobox.cpp
@@ -674,7 +674,7 @@ void wxComboBox::Redo()
 
 void wxComboBox::SelectAll()
 {
-    Select(0, GetLastPosition());
+    SetSelection(0, GetLastPosition());
 }
 
 bool wxComboBox::CanUndo() const
@@ -769,9 +769,16 @@ void wxComboBox::GetSelection( long* from, long* to ) const
 {
     if (IsEditable())
     {
+#ifdef __WXGTK20__
         GtkEditable *editable = GTK_EDITABLE(GTK_COMBO(m_widget)->entry);
+        gint start, end;
+        gtk_editable_get_selection_bounds(editable, & start, & end);
+        *from = start;
+        *to = end;
+#else
         *from = (long) editable->selection_start_pos;
         *to = (long) editable->selection_end_pos;
+#endif
     }
 }
 
diff --git a/src/gtk1/combobox.cpp b/src/gtk1/combobox.cpp
index 99e75910c2..9a1c2100bb 100644
--- a/src/gtk1/combobox.cpp
+++ b/src/gtk1/combobox.cpp
@@ -674,7 +674,7 @@ void wxComboBox::Redo()
 
 void wxComboBox::SelectAll()
 {
-    Select(0, GetLastPosition());
+    SetSelection(0, GetLastPosition());
 }
 
 bool wxComboBox::CanUndo() const
@@ -769,9 +769,16 @@ void wxComboBox::GetSelection( long* from, long* to ) const
 {
     if (IsEditable())
     {
+#ifdef __WXGTK20__
         GtkEditable *editable = GTK_EDITABLE(GTK_COMBO(m_widget)->entry);
+        gint start, end;
+        gtk_editable_get_selection_bounds(editable, & start, & end);
+        *from = start;
+        *to = end;
+#else
         *from = (long) editable->selection_start_pos;
         *to = (long) editable->selection_end_pos;
+#endif
     }
 }