uses std::chrono

source/gui/widgets/skeletons/content_view.cpp

@@ -1,7 +1,7 @@
 /*
 *	A Content View Implementation
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2017-2018 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2017-2019 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -132,7 +132,7 @@ namespace nana {
 							}
 							else if (this->drag_view_move && this->drive(arg.pos))
 							{
-								tmr.interval(16);
+								tmr.interval(std::chrono::milliseconds{ 16 });
 								tmr.start();
 							}
 						}