private void UpdateTip()
{
string tip;
if(Volume == slider.Adjustment.Lower) {
tip = Catalog.GetString("Muted");
} else if(Volume == slider.Adjustment.Upper) {
tip = Catalog.GetString("Full Volume");
} else {
tip = String.Format("{0}%", (int)((Volume - slider.Adjustment.Lower) /
(slider.Adjustment.Upper - slider.Adjustment.Lower) * 100.0));
}
tooltips.SetTip(this, tip, null);
}