some modifications for pr(#154)

update contributor info

include/nana/gui/widgets/listbox.hpp

@@ -8,12 +8,7 @@
  *	http://www.boost.org/LICENSE_1_0.txt)
  *
  *	@file: nana/gui/widgets/listbox.hpp
- *	@contributors:
+ *
- *		Hiroshi Seki
- *		Ariel Vina-Rodriguez
- *		leobackes(pr#86,pr#97)
- *		Benjamin Navarro(pr#81)
- *		besh81(pr#130)
  */
 
 #ifndef NANA_GUI_WIDGETS_LISTBOX_HPP
@@ -1149,7 +1144,7 @@ namespace nana
 				: public widget_geometrics
 			{
 				color_proxy header_bgcolor{static_cast<color_rgb>(0xf1f2f4)};
-				color_proxy header_fgcolor{ static_cast<color_rgb>(0x000000) };
+				color_proxy header_fgcolor{ colors::black };
 				color_proxy header_grabbed{ static_cast<color_rgb>(0x8BD6F6)};
 				color_proxy header_floated{ static_cast<color_rgb>(0xBABBBC)};
 				color_proxy item_selected{ static_cast<color_rgb>(0xD5EFFC) };

include/nana/gui/widgets/menu.hpp

@@ -1,13 +1,14 @@
 /**
  *	A Menu implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2009-2014 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2009-2016 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
  *	http://www.boost.org/LICENSE_1_0.txt)
  *
  *	@file: nana/gui/widgets/menu.hpp
+ *
  */
 
 #ifndef NANA_GUI_WIDGETS_MENU_HPP
@@ -138,13 +139,13 @@ namespace nana
 		~menu();
 
 			/// Appends an item to the menu.
-		item_proxy	append(const std::string& text, const event_fn_t& callback= event_fn_t());
+		item_proxy	append(std::string text_utf8, const event_fn_t& callback= event_fn_t());
 		void		append_splitter();
 		void clear();								///< Erases all of the items.
 		/// Closes the menu. It does not destroy the menu; just close the window for the menu.
 		void close();
 		void image(std::size_t pos, const paint::image& icon);
-		void change_text(std::size_t pos, const std::string& text);
+		void text(std::size_t pos, std::string text_utf8);
 		void check_style(std::size_t pos, checks);
 		void checked(std::size_t pos, bool);
 		bool checked(std::size_t pos) const;

source/gui/widgets/listbox.cpp

@@ -14,6 +14,7 @@
  *		leobackes(pr#86,pr#97)
  *		Benjamin Navarro(pr#81)
  *		besh81(pr#130)
+ *		dankan1890(pr#154)
  *
  */
 
@@ -3395,6 +3396,7 @@ namespace nana
 					int text_top = (r.height - essence_->scheme_ptr->text_height) / 2 + r.y;
 					auto text_color = essence_->scheme_ptr->header_fgcolor.get_color();
 					
+
 					auto state = item_state::normal;
 					//check whether grabing an item, if item_spliter_ != npos, that indicates the grab item is a spliter.
 					if ((parts::header == essence_->pointer_where.first) && (npos == grabs_.splitter))

source/gui/widgets/menu.cpp

@@ -1,7 +1,7 @@
 /*
 *	A Menu implementation
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2009-2015 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2009-2016 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -10,6 +10,7 @@
 *	@file: nana/gui/widgets/menu.cpp
 *	@contributors:
 *		kmribti(pr#102)
+*		dankan1890(pr#154)
 */
 
 #include <nana/gui/widgets/menu.hpp>
@@ -1120,9 +1121,9 @@ namespace nana
 			delete impl_;
 		}
 
-		auto menu::append(const std::string& text, const menu::event_fn_t& f) -> item_proxy
+		auto menu::append(std::string text_utf8, const menu::event_fn_t& f) -> item_proxy
 		{
-			impl_->mbuilder.data().items.emplace_back(text, f);
+			impl_->mbuilder.data().items.emplace_back(std::move(text_utf8), f);
 			return item_proxy(size() - 1, impl_->mbuilder.data().items.back());
 		}
 
@@ -1158,9 +1159,9 @@ namespace nana
 			impl_->mbuilder.data().items.at(index).image = img;
 		}
 
-		void menu::change_text(std::size_t index, const std::string& text)
+		void menu::text(std::size_t index, std::string text_utf8)
 		{
-			impl_->mbuilder.data().items.at(index).text = text;
+			impl_->mbuilder.data().items.at(index).text.swap(text_utf8);
 		}
 
 		bool menu::link(std::size_t index, menu& menu_obj)