postres, odbc and adox

I'm hoping that you can help me. I have written a MS C++ application that
uses ADO and ADOX to communicate to the ODBC drivers. I am trying to use
the PostGres ODBC driver but I am having problems in using the
ADOX::_CatalogPtr and inserting the connection:

m_pCatalog->PutActiveConnection("Provider=MSDASQL.1;Persist
Security Info=False;User ID=postgres;Data Source=PostgreSQL");

The ADO side of things works fine but if I want to do anything with ADOX
such as create a table, when I attempt to build the catalog based on a
postgres connection string, I get a _com_error. Do you have any idea as to
how to handle this? Does the your postgres ODBC driver not support ADOX?
Could I be doing something wrong?

Many thanks for your help,
Tom

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