private void btnJingle2_Click(object sender, EventArgs e)
 {
     if (busylight != null)
     {
         Busylight.BusylightVolume vol = (Busylight.BusylightVolume)tbVolume.Value;
         busylight.Jingle(Busylight.BusylightColor.Yellow, Busylight.BusylightJingleClip.IM2, vol);
     }
 }
 // Blau blinken, kein Sound
 internal void btnBlueBlinkingWithoutSound_Click(object sender, EventArgs e)
 {
     // Statt "vol", wird der Wert 0 zugewiesen (Mute)
     Busylight.BusylightVolume vol = (Busylight.BusylightVolume)tbVolume.Value;
     busylight.Alert(Busylight.BusylightColor.Blue, Busylight.BusylightSoundClip.KuandoTrain, 0);
 }
 // Gelb blinken, mit Sound
 internal void btnYellowBlinkingWithSound_Click(object sender, EventArgs e)
 {
     Busylight.BusylightVolume vol = (Busylight.BusylightVolume)tbVolume.Value;
     busylight.Alert(Busylight.BusylightColor.Yellow, Busylight.BusylightSoundClip.KuandoTrain, vol);
 }