columnviewcolumn: Improve docs

Mention what setting sorter to NULL means.

diff --git a/gtk/gtkcolumnviewcolumn.c b/gtk/gtkcolumnviewcolumn.c
index 51d03887073b0699c8f1bac20ab2639680a2141c..fd70a247d1b442aa3b2e23cc6c16dbc4d1b14449 100644 (file)
--- a/gtk/gtkcolumnviewcolumn.c
+++ b/gtk/gtkcolumnviewcolumn.c
@@ -742,6 +742,9 @@ gtk_column_view_column_remove_from_sorter (GtkColumnViewColumn *self)
  *
  * Associates a sorter with the column.
  *
+ * If @sorter is %NULL, 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 gtk_column_view_sort_by_column().
  *