Re: [ctypes-users] python callind delphi

[Thomas H. <th...@py...>]

"Donald L. Dietmeyer" <dl...@en...> writes:

> I was given a  lib_xx.so  which I believe was written in Delphi, and
> ask to prepare a Python wrapper.  One thing lead to another which
> eventually lead to ctpyes, which doesn't seem to do the job either.
> I an testing with:
>
>
> #!/usr/bin/python2
> #
> #  Lets make ctypes work with libBitLink
> #
> from ctypes import cdll
> import os, sys
>
> libBL = cdll.LoadLibrary("/home/dld/bitlink/BitLinkLib/libBitLink.so")
>
> libBL.BS_Init()
> f = libBL.BS_Open("TTY:/dev/ttys1")
> print f
>
> libBL.BS_Send(f, "?")
> print libBL.BS_Count(f)
>
>
> BS_Open always returns 0, whether I supply a valid device or make
> multiple calls on the same device.  BS_Send apparently isn't
> effective either, as Count always reveals that zero bytes are
> being returned in response.
>
> Am I missing something?  Suggestions?

I cannot see anything wrong here, but what do I know about Delphi and
it's calling conventions on *nix.  I know that one guy called a Delphi
dll on Windows, he had to pass the parameters in the reverse order.
Maybe you can try that...

Thomas