gtk:column-view-column-sorter (object)

object -- a gtk:column-view-column object
sorter -- a gtk:sorter object

The accessor for the sorter slot of the gtk:column-view-column class gets or sets the sorter that is associated with the column. If sorter is nil, the column will not let users change the sorting by clicking on its header. This sorter can be made active by clicking on the column header, or by calling the gtk:column-view-sort-by-column function.

See the gtk:column-view-sorter function for the necessary steps for setting up customizable sorting for the column view.