gtk:arrow-set (arrow arrow-type shadow-type)

arrow -- a gtk:arrow widget
arrow-type -- a value of the gtk:arrow-type enumeration
shadow-type -- a value of the gtk:shadow-type enumeration

Sets the direction and style of the arrow. The gtk:arrow-set function has been deprecated since version 3.14 and should not be used in newly written code. Use a gtk:image widget with a suitable icon.