GtkCList: how to get row number from row data?

["David Z. Maze" <dmaze donut mit edu>]

By using gtk_clist_set_row_data(), I can associate an arbitrary
gpointer with a row in a GtkCList.  Given a GtkCList and an arbitrary
gpointer, is there a way to find out which row(s) (if any) that
gpointer corresponds to?

Equivalently, is there a way to find out how many rows are in a
GtkCList?  (i.e. does there exist a gtk_clist_count_rows() function?)

-- 
 _____________________________
/                             \       "Dad was reading a book called
|          David Maze         |     _Schroedinger's Kittens_.  Asexual
|         dmaze@mit.edu       |  reproduction?  Only one cat is in the box."
| http://donut.mit.edu/dmaze/ |               -- Abra Mitchell
\_____________________________/