Re: [ctypes-users] cast pointer to long ?

[Luke D. <cod...@ho...>]

----- Original Message ----- 
From: "Simon Burton" <si...@ar...>
To: <cty...@li...>
Sent: Saturday, May 27, 2006 9:44 AM
Subject: [ctypes-users] cast pointer to long ?


>
> Does ctypes support casting a pointer to a long ?

No, but if you cast it to c_void_p first then you can extract the integer 
value:

>>> ctypes.cast( func_ptr, ctypes.c_void_p )
c_void_p(2088770935)
>>> ctypes.cast( func_ptr, ctypes.c_void_p ).value
2088770935
>>>

Luke


>>>> ctypes.cast( func_ptr, ctypes.c_long )
> Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "/home/users/simonb/lib/python2.3/site-packages/ctypes/__init__.py", 
> line 432, in cast
>    return _cast(obj, obj, typ)
> TypeError: cast() argument 2 must be a pointer type, not c_long
>>>>
>
> Simon.
>
> -- 
> Simon Burton, B.Sc.
> Licensed PO Box 8066
> ANU Canberra 2601
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