Need a way to configure encoding

I am working on a linux ODBC C++ application and using psqlodbc driver. I need help on the below few questions.

1. Is there a way in which we can make the psqlodbc code work according to the client encoding?

For example, if my application encoding is UTF-8, i would want the types and strings returned to my application in UTF-8. I think by default, it is returning UTF-16 strings.

2. The default behaviour of the driver is when we have a VARCHAR column in a table, it returns SQL_WVARCHAR as the type. Is there a possibility where we can configure something (maybe at connection string), such that it returns SQL_VARCHAR for VARCHAR column and not SQL_WVARCHAR ?

Please help me in answering the above questions.

Regards,

Abhishek Kumar