#include <db.h> int DB->get_re_len(DB *db, u_int32_t *re_lenp);
        The DB->get_re_len() method returns the length of the records held
        in a Queue access method database. This value can be set using the
        DB->set_re_len()
        method.
    
         The DB->get_re_len() method may be
         called only after the database has been opened.
    
         The DB->get_re_len() 
            
                  method returns a non-zero error value on failure and 0 on success.
            
            
        
    
                          The DB->get_re_len() method returns  the record
                          length in re_lenp. If the record length
                          has never been set using 
                          DB->set_re_len(), 
                          then 0 is returned.