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

[Allison N. <dem...@ma...>]

 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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