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-rw-r--r--gtk2_ardour/ardour_knob.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/gtk2_ardour/ardour_knob.cc b/gtk2_ardour/ardour_knob.cc
index 1cad9f4f55..e7d9647d3b 100644
--- a/gtk2_ardour/ardour_knob.cc
+++ b/gtk2_ardour/ardour_knob.cc
@@ -377,10 +377,12 @@ ArdourKnob::set_controllable (boost::shared_ptr<Controllable> c)
void
ArdourKnob::controllable_changed ()
{
- _val = binding_proxy.get_controllable()->get_interface(); //% of knob travel
+ boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
+ _val = c->get_interface(); //% of knob travel
_val = min( max(0.0f, _val), 1.0f); //range check
+ ARDOUR_UI::instance()->set_tip (*this, _tooltip_prefix + c->get_user_string());
set_dirty();
}