this are no new functions necessary. the goes through Messages (here $101c/$1008/4105), The in the Profan-Inc-File vordefiniert are:
DeleteColumn(listenhandle&,spaltenindex%) deletes a ListViewSpalte @DeleteItem (listenhandle&,zeilenindex%) deletes a row (Item) DeleteAllItems(listenhandle&) deletes any Items the list