some improvements

improved resizing performance
removed frame widget
refactoring

source/gui/widgets/frame.cpp

@@ -1,51 +0,0 @@
-/*
- *	A Frame Implementation
- *	Copyright(C) 2003-2013 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/frame.cpp
- *
- *	A frame provides a way to contain the platform window in a stdex GUI Window
- */
-
-#include <nana/gui/widgets/frame.hpp>
-
-#ifndef WIDGET_FRAME_DEPRECATED
-
-namespace nana
-{
-	//class frame:: public widget_object<category::frame_tag>
-		frame::frame(){}
-
-		frame::frame(window wd, bool visible)
-		{
-			create(wd, rectangle(), visible);
-		}
-
-		frame::frame(window wd, const nana::rectangle& r, bool visible)
-		{
-			create(wd, r, visible);
-		}
-
-		bool frame::insert(native_window_type wd)
-		{
-			return API::insert_frame(handle(), wd);
-		}
-
-		native_window_type frame::element(unsigned index)
-		{
-			return API::frame_element(handle(), index);
-		}
-
-		native_window_type frame::container() const
-		{
-			return API::frame_container(handle());
-		}
-	//end class frame
-}//end namespace nana
-
-#endif
-