[MacRuby-devel] Frameworks Help

[Shaun August]

Hi Again,

I have spent some time with Nick's tutorial and I am looking into wrapping the framework I have been provided with and I have a few more questions. 

The framework I am working with is already compiled and not in an xcode file. I am guessing all I need to do is write the Objective-C wrapper? The other issue I am having is the framework only contains one header file which links out to a series of files contained in a system extension. 

Am I able to write my wrapper in an Objective-C class from within my macruby application or do I need to create a bundle and import that into my project.

Thanks,

Shaun




On 2010-10-19, at 10:12 PM, Mario Steele wrote:

> Hello Shaun,
> 
> On Wed, Oct 20, 2010 at 12:00 AM, Shaun August <shaun at eoslightmedia.com> wrote:
> Hi Robert,
> 
> Thanks! That make sense. All those cocoa classes have capitals and they work fine. I seem to be able to call from the framework but I am running into an undefined method 'extern'. I have also read somewhere that extern doesn't work with MacRuby. Is that correct? The framework I am dealing with is calling C functions and I am having trouble accessing them.
> 
> extern is a macro for the ld library, to export an API Address in the Dynamic library, that can be access dynamically at run time.  With Objective-C, or more so specifically with MacRuby, you need to write a sort of thin wrapper around C Functions in Objective C, in order to access said Functions.  So if the framework that you are working with, doesn't expose Objective C API Functions, you'll need to write a thin wrapper in order to access them.  See the tutorial done by Nick Ludlam about wrapping the TagLib C Library, in Objective C.  You can find it here: http://www.macruby.org/documentation/reading-an-mp3-with-macruby.html  It's best to read through the entire article, as it gives you information about wrapping C Functions in Objective C, which is quite useful, when writing your own wrapper.
> 
> hth,
> 
> Mario
>  
> Thanks,
> 
> Shaun
> 
> 
> On 2010-10-19, at 8:26 PM, Robert Rice wrote:
> 
> > Hi Shaun:
> >
> > Lower case method names is only a convention. MacRuby will work fine using upper case, i.e., constant, method names.
> > I know because I only recently changed my project to conform to the convention.
> >
> > Bob Rice
> >
> >
> > On Oct 19, 2010, at 7:17 PM, Shaun August wrote:
> >
> >> Hi There,
> >>
> >> I am attempting to work with a framework provided by a USB device manufacturer and all of their method names start with capitols and I am wondering about the easiest way to access these methods through macruby. I remember reading somewhere about fixing the constants in Obj-C but I cannot locate the information.
> >>
> >> Does anyone have any suggestions as to how to remedy this? Should I rename every command in the framework?
> >>
> >> Thanks,
> >>
> >> Shaun
> >>
> >> _______________________________________________
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> >>
> >
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> 
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> Mario Steele
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