Re: [Rubycocoa-talk] Using Cocoa structs in RubyCocoa

[Eloy D. <e....@su...>]

Hi Alli,

No problem, thanks!
I should have known though,
but solving that issue was beyond the scope of giving you the answer :)

So did it wrap everything correctly?
If so, you might want to file a radar ticket with apple
to get the bridgesupport file added in an update.

- Eloy

On Aug 19, 2008, at 1:59 PM, Allison Newman wrote:

> Eloy,
>
> Apparently you need to patch your rexml/document.rb.  See here:
> http://rubycocoa.sourceforge.net/GettingStarted
>
> (Sorry to send you to the newbie site, but it describes your result  
> perfectly - gen_bridge_metadata on QTKit works on my system.)
>
> Alli
>
> On Tuesday, August 19, 2008, at 01:35PM, "Eloy Duran" <elo...@gm... 
> > wrote:
>> Hi Alli,
>>
>> Normally you'd cerate a bridge support file like so:
>>
>> $ gen_bridge_metadata -f QTKit > QTKit.bridgesupport
>>
>> Where -f stands for a framework name in one of the default load  
>> paths.
>> However, trying to wrap QTKit results in the following error:
>> "undefined local variable or method `trans' for <UNDEFINED> ... </
>>> :REXML::Document"
>>
>> So I guess you'd need to debug this to get it to completely wrap the
>> framework.
>>
>> - Eloy
>>
>> On Aug 19, 2008, at 12:56 PM, Allison Newman wrote:
>>
>>> Hi everyone,
>>>
>>> I'm currently having trouble with writing some code to generate a
>>> Quicktime movie file.  When I wish to add an image to the file, I
>>> have to create a QTTime struct.
>>>
>>> When I do this for most of the standard Cocoa structs, such as
>>> NSRect, NSPoint etc, I can simply do:
>>>
>>> point = NSPoint.new(1, 2)
>>>
>>> This works.  However if I try the same idea with a QTTime:
>>>
>>> qt_time = QTTime.new(1, 10, 0)
>>>
>>> RubyCocoa dies, claiming it doesn't know the constant QTTime.
>>>
>>> I have tried looking inside the RubyCocoa framework to see how the
>>> magic is done for the NSxxxx structs, but I found the following
>>> comment in oc_types.rb:
>>>
>>> # This module adds syntax-sugar APIs on top of the Cocoa structures.
>>> # This is mostly to preserve backwards compatibility with previous
>>> versions
>>> # of RubyCocoa where the C structures support was hardcoded in the
>>> bridge.
>>> # Now structures are automatically handled via the metadata
>>> mechanism, but
>>> # the API is not compatible with what we used to have.
>>>
>>> If I understand correctly, this means that QTKit has not had
>>> metadata generated for it to handle things such as structs etc.  Can
>>> anyone confirm that this is the case, and if so, point me in the
>>> direction of some documentation explaining how it is done.  With a
>>> bit of luck, I'll even be able to add the QTKit metadata back into
>>> the RubyCocoa project.
>>>
>>> Thanks for any help.
>>>
>>> Alli
>>>
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