minor changes

include/nana/gui/widgets/listbox.hpp

@@ -17,6 +17,8 @@
 
 #ifndef NANA_GUI_WIDGETS_LISTBOX_HPP
 #define NANA_GUI_WIDGETS_LISTBOX_HPP
+#include <nana/push_ignore_diagnostic>
+
 #include "widget.hpp"
 #include "detail/inline_widget.hpp"
 #include <nana/pat/abstract_factory.hpp>
@@ -747,4 +749,6 @@ the nana::detail::basic_window member pointer scheme
 		void _m_erase_key(nana::detail::key_interface*);
 	};
 }//end namespace nana
+
+#include <nana/pop_ignore_diagnostic>
 #endif