URGENT : free result (libpq++ API)

Hi all,
I'm using PG - 7.2.4 on Solaries.
I'm using "libpq++" library as client implementation is coded in "C++".

I'm doing the following :
1. Making the connection to database by creating new object of
"PgDatabase" i.e.
data = new PgDatabase( " CONNECTION INFO ");

2. Then I execure the query with:
int return = data->Exec( " THIS IS A SQL QUERY");

My question is ,
How should I clear(free) the result of the query? Need I close the
connection after each query to do that?
I wish to use the same connection for multiple queries.

This problem I've observed with "libpq++" only not with "libpq" . With
"libpq" APIs the,
"PQexec" API returns "PGresult" type pointer with which we can clear
with the result of the query with "Pqclear(Pgresult *)" API.

Is the same functionality is present in "lipq++" APIs also?

Pls. help.

Thanks,
Anagha