/// <summary>
 /// Defines configuration tray menu behaviour.
 /// </summary>
 /// <param name="sender">Sender.</param>
 /// <param name="e">Event arguments.</param>
 private void OnConfigure(object sender, EventArgs e)
 {
     configuration_view = new Configuration();
     configuration_view.Show();
 }
 /// <summary>
 /// Defines tray icon mouse click behaviour.
 /// </summary>
 /// <param name="sender">Sender.</param>
 /// <param name="e">Mouse event arguments.</param>
 public void OnTrayClick(object sender, MouseEventArgs e)
 {
     if (e.Button == MouseButtons.Left)
     {
         configuration_view = new Configuration();
         configuration_view.Show();
     }
 }