how to export functions by name for ctype
I'm on Windows with VS2005 testing ctypes on a very simple dll I create a test.dll project which exports a function fntest(). I don't touch anything in the autogenerated source and build it. I can load the dll but can't access the function by its name fntest. Only by ordinal number or calling getattr with "?fntest@@YAHXZ". How do I export functions by name? It's probably rather a VS2005 question, but I'm a bit disappointed ctypes doesn't work with a default export convention. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to export functions by name for ctype
On 23 Jun, 10:32, Nick Craig-Wood <[EMAIL PROTECTED]> wrote:
> rych <[EMAIL PROTECTED]> wrote:
> > I'm on Windows with VS2005 testing ctypes on a very simple dll
> > I create a test.dll project which exports a function fntest(). I don't
> > touch anything in the autogenerated source and build it. I can load
> > the dll but can't access the function by its name fntest. Only by
> > ordinal number or calling getattr with "?fntest@@YAHXZ". How do I
> > export functions by name? It's probably rather a VS2005 question, but
> > I'm a bit disappointed ctypes doesn't work with a default export
> > convention.
>
> I guess you've compiled your DLL with C++ and the above is a C++
> mangled name.
>
> Either compile it with C, or export the names in an extern "C" { }
> block.
>
> --
> Nick Craig-Wood <[EMAIL PROTECTED]> --http://www.craig-wood.com/nick
That fixed it, thank you.
--
http://mail.python.org/mailman/listinfo/python-list
ctypes Structure serialization
I'm not quite familiar with python serialization but the picle module,
at least, doesn't seem to be able to serialize a ctypes Structure with
array-fields. Even if it was, the ASCII file produced is not in a
human-friendly format.
Could someone please suggest a method of saving and loading the fields
in ctypes' Structure derived class to a json or better yet, to
something like INFO
http://www.boost.org/doc/libs/1_41_0/doc/html/boost_propertytree/parsers.html#boost_propertytree.parsers.info_parser
For example, I have an object of
>>> class MyStruct(Structure):
..._fields_ = [("a", c_int),
...("b", c_float),
...("point_array", c_float * 4)]
I'd like the corresponding file to look like
a 1
b 1.0
point array 1.1 1.2 1.3 1.4
Thanks
--
http://mail.python.org/mailman/listinfo/python-list
Re: ctypes Structure serialization
OK, an easier question, hopefully. How to unpack all fields from ctypes Structure line by line and save into the name-value pairs? -- http://mail.python.org/mailman/listinfo/python-list
