add event stop_propagation

source/gui/widgets/listbox.cpp

@@ -1,7 +1,7 @@
 /*
  *	A List Box Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2014 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
@@ -3489,6 +3489,12 @@ namespace nana
 		}
 	}//end namespace drawerbase
 
+	arg_listbox::arg_listbox(drawerbase::listbox::item_proxy& m, bool selected)
+		: item(m), selected(selected)
+	{
+	
+	}
+
 	//class listbox
 		listbox::listbox(window wd, bool visible)
 		{