private void InitializeComboBox <T>(Gtk.ComboBox comboBox, IEnumerable <T> values, T activeValue, Func <T, string> toDisplayString)
{
var cellRenderer = new Gtk.CellRendererCombo();
comboBox.PackStart(cellRenderer, true);
comboBox.SetCellDataFunc(cellRenderer, (l, e, m, i) => VisualHelpers.CellEnumRenderer <T>(l, e, m, i, toDisplayString));
var model = new Gtk.ListStore(typeof(T));
model.SynchronizeCollection(new ObservableCollection <T>(values));
comboBox.Model = model;
comboBox.Active = comboBox.GetIndexOfValue(activeValue);
}
