private static void TracingStatusChangedHandler(Object sender, WFD.TracingStatusChangedEventArgs args)
 {
     if (args.Enabled)
        f_LoggingOn |= Loggers.CausalityTracer;
     else 
        f_LoggingOn &= ~Loggers.CausalityTracer;
 }
 private static void TracingStatusChangedHandler(Object sender, WFD.TracingStatusChangedEventArgs args)
 {
     f_LoggingOn = args.Enabled;
 }