Fixed build error

compiler didn't understand std::function include ```<functional>```
2017-06-26 03:05:23 +09:00 · 2017-06-26 03:05:23 +09:00 · 03642b8e3f
commit 03642b8e3f
parent 1ed7702790
1 changed files with 2 additions and 0 deletions
--- a/include/nana/gui/detail/native_window_interface.hpp
+++ b/include/nana/gui/detail/native_window_interface.hpp
@ -16,6 +16,8 @@
 #include "../basis.hpp"
 #include <nana/paint/image.hpp>

+#include <functional>
+
 namespace nana
 {
 namespace detail