From 57e80c2c8fc4f08590ba1e35ec5e7bae3d85a169 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Fri, 24 Apr 2015 22:16:10 +0200
Subject: allow to set toolip on knob

---
 gtk2_ardour/ardour_knob.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'gtk2_ardour/ardour_knob.cc')

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();
 }
 
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