Re: [Pyobjc-dev] Blocks support in PyObjC

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

Vladimir,

Pyobjc does support blocks and you should pass a function wherever the  
obc side expects a block.

Sadly enough blocks are not introspectable at runtime in the objc (or  
blocks) runtime which means we have to provide additional custom  
metadata. You seem to have found a method where we haven't done that  
yet and I'll fix that for the next release.

Ronald



On 12 okt 2009, at 09:08, Vladimir Pouzanov <far...@gm...> wrote:

> Hi all,
>
> Does PyObjC support selectors with block arguments? I'm trying to make
> use of NSOpenPanel's beginSheetModalForWindow_completionHandler_, but
> I'm somewhat unsure what to pass as the second argument. I've tried
> creating a callback function like this:
>
> def doneImport_(res):
>    print "panel","returned",res
>
> But I'm getting <type 'exceptions.TypeError'>: Argument 3 is a block,
> but no signature available
>
> Wrapping the function with @objc.signature('vI') doesn't help  
> either. Any hints?
>
> -- 
> Sincerely,
> Vladimir "Farcaller" Pouzanov
> http://farcaller.net/
>
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