GUI with blocking database access

[Tim Scheffler]

Dear all,

I would like to construct a GUI to access an external database.
Unfortunately I have to use a (non-opensource) python dll (WIN32)
module provided by the database to write/read from/to it. If I/O is
done via this module all execution is stopped if I try to run it in a
separate thread in the GUI.

Does somebody have an idea how to construct a GUI, that can trigger
such an I/O module? I thought about to run two separate processes on
WIN-NT one that provides the GUI and one that runs the I/O and let
them communicate through a pipe or something like that. But here I
dont know how to start two processes from one python script as fork()
wont work on WIN-NT.

Any help is deeply appreciated.

Thanks in anticipation

Tim