Re: [Rubycocoa-talk] Address of structure

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

Hi Duncan,

I don't know about anyone else, but here's what I do when I want to use NSData:

rect =  [0, 0, image_params.width_pt,  image_params.height_pt].pack('L_*')
data = NSData.alloc.initWithBytes_length(rect, 16)

Of course there are probably a few zillion other ways of achieving the same aim.  Hope that helps.

Alli

On Monday, April 27, 2009, at 11:05AM, "Duncan McGregor" <du...@on...> wrote:
>Sorry to have to ask this, but Sourceforge's mailing list search is so  
>bad that I can't find an answer even if it exists.
>
>I'm trying to put a CGRect into an NSData
>
>rect_pt = CGRectMake(0, 0, image_params.width_pt,  
>image_params.height_pt)
>data = NSData.alloc.initWithBytes_length(rect_pt, 16)
>
>ArgumentError: Expected either String/Array/ObjcPtr for argument #0  
>(but got OSX::CGRect).
>
>How do I create the ObjcPtr from a CGRect?
>
>Thanks in anticipation
>
>Duncan McGregor
>www.VelOCRaptor.com - Simple Mac OCR
>
>PS - Is there a better way of creating an NSData from a structure?
>
>
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