Re: [ctypes-users] How to pass String BYREF to C function?

[marco c. <mar...@gm...>]

Hi

2010/8/18 Andrew Wilson <and...@al...>

> Hey Lynton,
>   Your c code needs to properly terminate the string with a '\n' in order
> for python to print the result correctly.
>   Andrew
>
> On Wed, Aug 18, 2010 at 8:11 AM, Lynton Grice <lyn...@lo...
> > wrote:
>
>> ....
>>
>> I get the following output in WingIDE
>>
>>
>>
>> helloö
>>
>>
but create_string_buffer() shouldn't take care of terminating the string
with 0?

following
http://docs.python.org/library/ctypes.html
 You should be careful, however, not to pass them to functions expecting
pointers to mutable memory. If you need mutable memory blocks, ctypes has a
create_string_buffer() function which creates these in various ways. The
current memory block contents can be accessed (or changed) with the raw
property; if you want to access it as NUL terminated string, use the value
property:

anyway, the second argument of create_string_buffer() can be the length of
the string buffer array, so you can set it to the string's lenght +1
bye
marco