private void createComboTests()
{
combo_tests = ComboBox.NewText ();
tests = Util.StringToStringArray(Constants.UndefinedDefault);
UtilGtk.ComboUpdate(combo_tests, Util.StringToStringArray(Constants.UndefinedDefault), "");
combo_tests.Active = UtilGtk.ComboMakeActive(tests, Catalog.GetString(Constants.UndefinedDefault));
combo_tests.Changed += new EventHandler (on_combo_tests_changed);
UtilGtk.ComboPackShowAndSensitive(hbox_combo_tests, combo_tests);
}