private void notesCtrl_KeyDown(object sender, KeyEventArgs e) {
string key = util.key_to_action(e);
bool del = key == "delete" || key == "back";
if ( del)
if ( notesCtrl.SelectedIndex >= 0)
toggle_del_note( (notesCtrl.GetItem(notesCtrl.SelectedIndex).RowObject as note_item).note_id);
}