CTypes, 64 bit windows, 32 bit dll

[Tim Roberts]

rdahlstrom <roger.dahlstrom at gmail.com> wrote:
>On Mar 31, 12:53 pm, "mimi.vx" <mimi... at gmail.com> wrote:
>> On Mar 31, 4:22 pm, rdahlstrom <roger.dahlst... at gmail.com> wrote:
>>
>> > So I have a 64 bit Windows 2003 system, running python 2.5.1.1.
>>
>> > I can import a Windows .dll (msvcrt or whatever) using ctypes, but
>> > when attempting to import another application-specific .dll (tibrv.dll
>> > if anyone is familiar with it), I receive the error WindowsError:
>> > [Error 193] %1 is not a valid Win32 application.
>>
>> > I know there's a Windows on Windows (wow) which allows 32 bit
>> > processes to run on 64 bit windows - is there a way to work this in
>> > somehow?  Maybe I'm barking up the wrong tree?
>>...
>>
>> all dlls and python must be 32bit or 64bit, no mixed ...
>
>Crap, no way to make a 32 bit load, even using the wowexec?

No.  In Win64, a process is either entirely 32-bit, or entirely 64-bit.  To
do the kind of crossing you seek, you would need to create a separate
process for the 32-bit DLL and use interprocess communication.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.