Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Meterbridge::sync_order_keys, this, _1), gui_context());
MeterStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Meterbridge::remove_strip, this, _1), gui_context());
MeterStrip::MetricChanged.connect (*this, invalidator (*this), boost::bind(&Meterbridge::resync_order, this), gui_context());
Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Meterbridge::sync_order_keys, this, _1), gui_context());
MeterStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Meterbridge::remove_strip, this, _1), gui_context());
MeterStrip::MetricChanged.connect (*this, invalidator (*this), boost::bind(&Meterbridge::resync_order, this), gui_context());