define external counter function SQLGetConnectAttr
     (  read-only SQL_handle_type ConnectionHandle,
        value counter Attribute,
        value SQL_vector_type Value,
        value counter BufferLength,
        modifiable counter StringLength )

Returns the current setting of a connection attribute.

Input arguments:

• ConnectionHandle.
• Attribute. The attribute identifier.
• Value. The current value of the specified attribute.
• BufferLength. The maximum size of Value.

Output argument:

• StringLength. The returned size of Value.