From 4aba8e8c7ff284f367ea286d957e41f89e3a4ccf Mon Sep 17 00:00:00 2001
From: Jinhao <cnjinhao@hotmail.com>
Date: Wed, 26 Apr 2017 05:26:39 +0800
Subject: [PATCH] fix memory leak for spinbox

---
 include/nana/gui/widgets/spinbox.hpp | 1 +
 include/nana/gui/widgets/widget.hpp  | 8 ++++----
 source/gui/widgets/spinbox.cpp       | 5 +++++
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/nana/gui/widgets/spinbox.hpp b/include/nana/gui/widgets/spinbox.hpp
index 567a219c..2ecabc78 100644
--- a/include/nana/gui/widgets/spinbox.hpp
+++ b/include/nana/gui/widgets/spinbox.hpp
@@ -56,6 +56,7 @@ namespace nana
 			private:
 				//Overrides drawer_trigger
 				void attached(widget_reference, graph_reference) override;
+				void detached() override;
 				void refresh(graph_reference)	override;
 
 				void focus(graph_reference, const arg_focus&)	override;
diff --git a/include/nana/gui/widgets/widget.hpp b/include/nana/gui/widgets/widget.hpp
index 2aed3a8e..c355e97b 100644
--- a/include/nana/gui/widgets/widget.hpp
+++ b/include/nana/gui/widgets/widget.hpp
@@ -1,7 +1,7 @@
 /**
  *	The fundamental widget class implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -245,9 +245,9 @@ namespace nana
 
 		void _m_notify_destroy() override final
 		{
-			widget_base::_m_notify_destroy();
 			events_ = std::make_shared<Events>();
 			API::dev::set_events(handle_, events_);
+			widget_base::_m_notify_destroy();
 		}
 	private:
 		DrawerTrigger trigger_;
@@ -310,9 +310,9 @@ namespace nana
 
 		void _m_notify_destroy() override final
 		{
-			widget_base::_m_notify_destroy();
 			events_ = std::make_shared<Events>();
 			API::dev::set_events(handle_, events_);
+			widget_base::_m_notify_destroy();
 		}
 	private:
 		std::shared_ptr<Events> events_;
@@ -449,9 +449,9 @@ namespace nana
 
 		void _m_notify_destroy() override final
 		{
-			widget_base::_m_notify_destroy();
 			events_ = std::make_shared<Events>();
 			API::dev::set_events(handle_, events_);
+			widget_base::_m_notify_destroy();
 		}
 	private:
 		DrawerTrigger					trigger_;
diff --git a/source/gui/widgets/spinbox.cpp b/source/gui/widgets/spinbox.cpp
index 50c3eddc..87cec724 100644
--- a/source/gui/widgets/spinbox.cpp
+++ b/source/gui/widgets/spinbox.cpp
@@ -531,6 +531,11 @@ namespace nana
 				impl_->attach(wdg, graph);
 			}
 
+			void drawer::detached()
+			{
+				impl_->detach();
+			}
+
 			void drawer::refresh(graph_reference)
 			{
 				impl_->render();