How to use special charactes in psqlodbc driver password

Question

In Postgres psqlodbc driver using special characters in connection string password like

sqlstringconnect('DRIVER={PostgreSQL Unicode};PWD=pü')

or in url encoded form

sqlstringconnect('DRIVER={PostgreSQL Unicode};PWD=p%C3%BC')

throws password error.

According to

https://www.postgresql-archive.org/Problem-with-special-characters-in-password-when-using-SQLDriverConnect-td5755239.html

and

https://www.url-encode-decode.com

PWD=p%C3%BC

should accepted as pü

How to use special characters in passwords ?

Client application is Microsoft Visual Foxpro 9

Using Postgres 13.1 with 32-bit psqlodbc driver 13.00.0000 in Windows 10 non-unicode application where system locale is Windows-1257 (Baltic Windows)