/usr/include/guichan/widgets/ is in libguichan-dev 0.8.2-16.
This file is owned by root:root, with mode 0o755.
..
/usr/include/guichan/widgets/button.hpp
/usr/include/guichan/widgets/checkbox.hpp
/usr/include/guichan/widgets/container.hpp
/usr/include/guichan/widgets/dropdown.hpp
/usr/include/guichan/widgets/icon.hpp
/usr/include/guichan/widgets/imagebutton.hpp
/usr/include/guichan/widgets/label.hpp
/usr/include/guichan/widgets/listbox.hpp
/usr/include/guichan/widgets/radiobutton.hpp
/usr/include/guichan/widgets/scrollarea.hpp
/usr/include/guichan/widgets/slider.hpp
/usr/include/guichan/widgets/tab.hpp
/usr/include/guichan/widgets/tabbedarea.hpp
/usr/include/guichan/widgets/textbox.hpp
/usr/include/guichan/widgets/textfield.hpp
/usr/include/guichan/widgets/window.hpp