Hi Tim,
Thanks for taking a look.
Do you have maybe some quick idea for some way of fixing it with
intermediate code, so that fe. calls are verified for result and reissued
in another style/_FlaggedAsMethod and reissued - and _FlagAsMethod or
using cmd._olerepr_.defaultDispatchNam later in code is not required?
I imagine that it could work as some extra import, and then would allow
using all the Directory Opus API without any special provisions. I don't
want to mess with pywin32 code.
Looks like great python exercise :)
Regards,
Lukasz
Dnia Mon, 11 Apr 2016 19:20:01 +0200, Tim Roberts <t...@probo.com> napisał:
Łukasz Jakubowski wrote:
Please look up the following forum post:
http://resource.dopus.com/viewtopic.php?f=12&t=24125&p=136297&hilit=python#p136297
Is this really some indication of a pywin32 problem?
Please mind that the provided example call should be really:
comm = DOpus.Create().Command().CommandList('u')
but using () does not work (a version without parentheses needs to be
used
or _FlagAsMethod).
CommandList accepts 0 or more arguments, while Create and Command
accept 0
arguments.
It seems using () should result in proper calling of a COM object?
This is really an ugly situation.
They are wrong to say that this is "100% a bug in Python". It's partly
their fault as well. The problem is that the IDispatch mechanism is
ambiguous, and they have designed their object model in a way that
absolutely invites misinterpretation. Their CommandList object supports
calls with no parameters, it supports calls with one parameter, and it
supports a default dispatch. By being overly accommodating, technically
speaking, their object has publicly advertised that it supports Python's
interpretation (fetching a property result and calling its default
dispatch), and there is no way for them to say they prefer one over the
other. Python happens to prefer the default dispatch solution when
given a choice, and this is the result.
At the core, this decision is made in CDispatch.__call__ in
win32com\client\dynamic, but that's so fundamental to IDispatch
operation that I don't know the implications of changing the order. In
the short term, I suspect you could work around this in an ugly way:
cmd = DOpus.Create().Command()
cmd._olerepr_.defaultDispatchName = None
comm = cmd.CommandList('u')
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