Implement a derived function for 'GainMeter::redraw_metrics()'

I'm not sure why exactly but at this line in 'GainMeter::set_controls ()' :-

    model_connections, invalidator (*this), boost::bind (&GainMeter::redraw_metrics, this), gui_context()

MSVC will not allow us to pass a base class function to boost::bind(). I tried explicitly specifying the base class and I also tried making the function public / making it virtual etc but the only thing which works is to implement a derived function.

It's somehow related to changing the signal from 'TypeChanged' to 'MeterTypeChanged' but I don't entirely understand why... :-(

1 files changed, 6 insertions, 0 deletions

diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
index 35cb66407b..1b6d32f904 100644
--- a/gtk2_ardour/gain_meter.cc
+++ b/gtk2_ardour/gain_meter.cc
@@ -1117,3 +1117,9 @@ GainMeter::route_active_changed ()
 		meter_configuration_changed (_meter->input_streams ());
 	}
 }
+
+void
+GainMeter::redraw_metrics ()
+{
+	GainMeterBase::redraw_metrics ();
+}