Thanks for the suggestion, Kyossi!  I found that  bridgesupport 2 includes 
bridgesupports for all of the system frameworks: 
http://bridgesupport.macosforge.org/trac/wiki/Releases
On Jan 5, 2011, at 9:35 AM, kyossi wrote:

> Hi,
> 
>> However, I do not see any struct definitions in the generated bridgesupport 
>> file.
> 
> I found past discussions about C-struct and .bridgesupport. hope this help.
> 
> [MacRuby-devel] How to use custom C struct's?
> http://www.mail-archive.com/macruby-devel@lists.macosforge.org/msg01492.html
> 
> 
> 2011/1/5 Garett Shulman <garett.shul...@gmail.com>:
>> Hello, is it possible to use CoreAudio frameworks from MacRuby?  I am trying 
>> the following simple experiment:
>> irb(main):001:0> framework 'AudioUnit'
>> => true
>> irb(main):002:0> load_bridge_support_file 'AudioUnit.bridgesupport'
>> => main
>> irb(main):003:0> AudioComponentFindNext(nil, [KAudioUnitType_Generator])
>> TypeError: unrecognized runtime type `{AudioComponentDescription=IIIII}'
>> 
>> I create the bridgesupport file with: gen_bridge_metadata --64-bit -f 
>> AudioUnit -o AudioUnit.bridgesupport
>> 
>> However, I do not see any struct definitions in the generated bridgesupport 
>> file.  If anyone has thoughts about documentation resources which may be 
>> illuminating or any other insights or suggestions they would be greatly 
>> appreciated.
>> 
>> Thanks! -Garett
>> 
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel@lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>> 
> _______________________________________________
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