I am unable to reproduce this, I am also running Win7 x64
Running with ipy64.exe
IronPython 2.7.2.1 (2.7.0.40) on .NET 4.0.30319.261 (64-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> from ctypes import *
>>> class foo(Union):
... __fields__ = [("t", c_uint), ("b", c_float)]
...
>>> bar = foo()
>>> bar.t = 1
>>>
Running with ipy.exe
IronPython 2.7.2.1 (2.7.0.40) on .NET 4.0.30319.261 (32-bit)
Type "help", "copyright", "credits" or "license" for more information.
>>> from ctypes import *
>>> class foo(Union):
... __fields__ = [("t", c_uint), ("b", c_float)]
...
>>> bar = foo()
>>> bar.t = 1
>>>
On Fri, Apr 20, 2012 at 6:45 AM, <m...@sysfault.org> wrote:
> Dear all,
>
> on a 64-bit Windows 7 machine (other platforms untested), I find myself
> unable to create a
> ctypes.Union-based class wrapper for a C type.
> Regardless of what kind of Union I create, it always ends up with a
> "object reference not set to an instance of an object" error from .NET. Find
> below a brief
> command line example including the necessary .NET and IronPython
> information.
>
> IronPython 2.7.2.1 (2.7.0.40) on .NET 4.0.30319.261 (32-bit)
> Type "help", "copyright", "credits" or "license" for more information.
>>>>
>>>> from ctypes import *
>>>> class foo(Union):
>
> ... _fields_ = [("t", c_uint), ("b", c_float)]
> ...
>>>>
>>>> bar = foo()
>>>> bar.t = 1
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> SystemError: Object reference not set to an instance of an object.
>
> I'm not subscribed to this list, in case you require more information please
> keep me in CC.
>
> Regards
> Marcus
>
> _______________________________________________
> Ironpython-users mailing list
> Ironpython-users@python.org
> http://mail.python.org/mailman/listinfo/ironpython-users
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