+ return gtk_tree_view_column_get_clickable( column );
+}
+
+void wxDataViewColumn::SetAsSortKey( bool WXUNUSED(sort) )
+{
+ // it might not make sense to have this function in wxHeaderColumn at
+ // all in fact, changing of the sort order should only be done using the
+ // associated control API
+ wxFAIL_MSG( "not implemented" );
+}
+
+bool wxDataViewColumn::IsSortKey() const
+{
+ GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN(m_column);
+ return gtk_tree_view_column_get_sort_indicator( column );