+    if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
+    {
+        wxWindow *top_frame = m_parent;
+        while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
+            top_frame = top_frame->GetParent();
+       GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
+       
+       if (window->default_widget)
+        {
+            gtk_widget_activate (window->default_widget);
+           return;
+       }
+    }
+