ctypes - swig - pointer

[gianluca]

On 30 Giu, 18:26, Jean-Paul Calderone <exar... at divmod.com> wrote:
> On Mon, 30 Jun 2008 09:13:42 -0700 (PDT), gianluca <geonom... at gmail.com> wrote:
> >I've a problem with dll function colled with python/ctypes. My
> >functions (C) requred a typedef int  "value_type" in tree different
> >way:
> >same as value_type; - mydll.foo1(value_type)
> >same as *value_type; - mydll.foo2(*value_type)
> >same as **value_type; - mydll.foo3(**value_type)
>
> >How can pass it in python. If i do that:
> >rules=POINTER(value_type)
> >opr=rsl.StrengthOfRules(rules,10)
> >R=POINTER(rules)
>
> POINTER takes a class and returns a new class which represents a pointer
> to input class.
>
> pointer takes an instance and returns a new object which represents a
> pointer to that instance.
>
> Jean-Paul

so,
if I write this:
p=pointer(value_type)
mydll.foo1(p)
could be correct but python say me:
TypeError: _type_ must have storage info
what does mean?

thank you

gima