private void OnInfoWindowResponse(object o, ResponseArgs args)
{
i_window.Destroy ();
i_window = null;
}
private void OnInfoButtonClicked(object o, EventArgs args)
{
if (i_window != null) {
i_window.Present ();
return;
}
i_window = new InfoWindow (current_song, this);
i_window.Visible = true;
i_window.Response += new ResponseHandler (OnInfoWindowResponse);
}