add event stop_propagation

source/gui/widgets/toolbar.cpp

@@ -1,6 +1,6 @@
 /*
  *	A Toolbar Implementation
- *	Copyright(C) 2003-2013 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -16,6 +16,10 @@
 
 namespace nana
 {
+	arg_toolbar::arg_toolbar(toolbar& tbar, std::size_t btn)
+		: widget{ tbar }, button{btn}
+	{}
+
 	namespace drawerbase
 	{
 		namespace toolbar