You can also customize
ctypes argument conversion to allow
instances of your own classes be used as function arguments.
ctypes looks for an _as_parameter_ attribute and uses this as
the function argument. Of course, it must be one of integer, string,
>>> class Bottles(object): ... def __init__(self, number): ... self._as_parameter_ = number ... >>> bottles = Bottles(42) >>> printf("%d bottles of beer\n", bottles) 42 bottles of beer 19 >>>
If you don't want to store the instance's data in the
_as_parameter_ instance variable, you could define a
which makes the data avaiblable.
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