From 0b6f0f1fd993a747818e2e28ecd904b09f8a81ed Mon Sep 17 00:00:00 2001
From: Daan van Hasselt <contact@daanvanhasselt.com>
Date: Fri, 7 Aug 2020 14:21:38 +0200
Subject: [PATCH] disconnect the update function on destruction

---
 src/Cinder-LeapMotion.cpp | 5 ++++-
 src/Cinder-LeapMotion.h   | 4 +++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/Cinder-LeapMotion.cpp b/src/Cinder-LeapMotion.cpp
index a373be5..84f5573 100644
--- a/src/Cinder-LeapMotion.cpp
+++ b/src/Cinder-LeapMotion.cpp
@@ -179,13 +179,16 @@ Device::Device()
 	mListener.mMutex	= &mMutex;
 	mController			= new Leap::Controller( mListener );
 
-	App::get()->getSignalUpdate().connect( bind( &Device::update, this ) );
+	mUpdateConnection	= App::get()->getSignalUpdate().connect( bind( &Device::update, this ) );
 }
 
 Device::~Device()
 {
 	disconnectEventHandler();
 	mController->removeListener( mListener );
+	if (mUpdateConnection.isConnected()) {
+		mUpdateConnection.disconnect();
+	}
 }
 
 Leap::Controller* Device::getController() const
diff --git a/src/Cinder-LeapMotion.h b/src/Cinder-LeapMotion.h
index 2d2f6b2..22ff6a3 100644
--- a/src/Cinder-LeapMotion.h
+++ b/src/Cinder-LeapMotion.h
@@ -40,6 +40,7 @@
 #include "cinder/Channel.h"
 #include "cinder/Matrix.h"
 #include "cinder/Vector.h"
+#include "cinder/Signals.h"
 #include <functional>
 #include <mutex>
 
@@ -129,7 +130,8 @@ class Device
 
 	std::function<void ( Leap::Frame )>	mEventHandler;
 
-	virtual void		update();
+	ci::signals::Connection mUpdateConnection;
+	virtual void			update();
 
 	Leap::Controller*	mController;
 	Leap::Device		mDevice;