Re: ctypes structure with a variable-size field at the end

gatch breizh wrote, On 06/15/2010 11:12 AM:
> Hi,
>
> I would like to know how to write a ctypes::Structure with a 
> variable-size field at the end.
> It occurs in many protocols to have a data field with a size early 
> defined.
> I have been searching a solution through the web (very usual 
> question) for a while but without any success ...
>

It might be possible to do with some clever tricks, but I would say:

C don't have variable-size fields, but it allows you to work with such 
"fields" through careful pointer manipulations and careful reading 
within the bounds. I would use the same approach with ctypes. For 
example by finding the address where the field starts and cast it to a 
c_char*length array.

/Mads

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