gtk:tree-view-headers-clickable (object)

object -- a gtk:tree-view widget
setting -- true if the columns are clickable

Accessor of the headers-clickable slot of the gtk:tree-view class. The gtk:tree-view-headers-clickable function returns whether all header columns are clickable. The (setf gtk:tree-view-headers-clickable) function allow the column title buttons to be clicked. The gtk:tree-view implementation is deprecated since 4.10. Please do not use it in newly written code.