Re: [Pyobjc-dev] Passing objects between PyObjc and SWIG

[Ronald O. <ron...@ma...>]

On 21 Mar, 2008, at 6:08, Kyle Johnson wrote:
> On Thu, Mar 20, 2008 at 7:05 AM, Ronald Oussoren <ron...@ma... 
> > wrote:
>>
>> On 20 Mar, 2008, at 11:27, Kyle Johnson wrote:
>>> So basically, I need to code something which converts the PyObjc
>>> internal type to a SWIG-understandable internal type.
>>
>> Those types are automaticly generated.
>>
>> You can use the __cobject__() method on all Objective-C or
>> CoreFoundation objects to get a Python CObject that wraps the raw
>> pointer.  That might be easier to convert to something that swig  
>> might
>> understand.
>
>
> Thank you for the info, Ronald. I think I'm going in the right
> direction with this now.
>
> I think there may be some wrapping still going on though with
> __cobject__ as I'm getting invalid context errors from Core Graphics
> (via Cairo).

You are the first user of this API, but looking at the code I'd say  
say that the implementation of __cobject__ is obviously correct.

Are your Cairo wrappers available somewhere? This would be easier to  
debug if I had access to the code.

BTW. If you don't mind having a hard dependency on PyObjC you could  
drop SWIG and use PyObjC instead, with some luck without writing a  
line of C code.   PyObjC can use the bridgesupport files generated by  
gen_bridge_metadata(1) on Leopard, and it should be possible to use  
that tool to generate an XML description of the cairo API's.

Ronald