Sets filter_iter to point to the row in filter that corresponds to the row pointed at by child_iter. If filter_iter was not set, FALSE is returned. Since 2.4
An uninitialized GtkTreeIter. out
A valid GtkTreeIter pointing to a row on the child model.
TRUE, if filter_iter was set, i.e. if child_iter is a valid iterator pointing to a visible row in child model.
See Implementation
Sets filter_iter to point to the row in filter that corresponds to the row pointed at by child_iter. If filter_iter was not set, FALSE is returned. Since 2.4