public override void callListeners(Listener listener, EventArgs aEvAr)
{
TrackingIDsChangedEventArgs tArgs = (TrackingIDsChangedEventArgs)aEvAr;
TrackingIDsChangedEventListener tListener = (TrackingIDsChangedEventListener)listener;
//call the common method defined in the interface:
tListener.TrackingIDsChanged(tArgs.TrackingIDs);
}
protected void onTrackingIDsChanged(TrackingIDsChangedEventArgs aTrackingIDs)
{
EventHandler <TrackingIDsChangedEventArgs> handler = TrackingIDsChanged;
if (handler != null)
{
handler(this, aTrackingIDs);
}
}