On Jun 18, 2007, at 1:12 AM, Kristoffer Lawson wrote:

> 
>  On 18 Jun 2007, at 07:04, Kevin Walzer wrote:
> 
> > Let's set aside the issue of the major commercial Mac software
> > vendors,
> > such as Microsoft and Adobe, and the fact that their major
> > applications
> > are all Carbon. Has Apple given any consideration to the fact that
> > nearly every cross-platform GUI toolkit uses Carbon for its windowing
> > system API? Not just Tk, but Qt, wxWidgets, and RealBasic, for
> > starters.
> > Or perhaps they have given this thought, and want to discourage
> > cross-platform toolkits?
> 
>  But why do they use Carbon? Why not move to Cocoa in their cases as
>  well? I can understand the move from Apple's point of view perfectly.
>  In fact, it has been a public secret for years that Carbon will be
>  deprecated at some point and that developers should use Cocoa. It's a
>  lot of work to maintain to APIs and does not make much sense for  
>  Apple.

Cocoa is a higher level toolkit than Carbon.  Tk wants to get it's  
grubby paws on events much closer to the "raw" state than the Cocoa  
model allows you to easily do.  OTOH, Carbon is a pretty low-level  
toolkit.  So it was a better match for Tk.  That's why when we were  
originally doing the Mac OS X port I decided to go with Carbon rather  
than rewriting it in Cocoa.

It could probably be done with Cocoa, but it would be more work, and  
would probably require subverting what Cocoa wants you to do at  
various points, so it is likely to be somewhat fragile.  Moreover, it  
would be a lot of work.  If somebody wants to do this, it would  
probably be a lot of fun, but it's not a weekend project...

> 
>  I can't really see the benefit in holding on tight to Carbon.
>  Besides, purely from a user's perspective, Cocoa application in
>  general feel more refined.
> 
>              /  http://www.fishpool.com/~setok/
> 
> 

I don't think this would really be an issue with Tk.  Much of what  
gives Cocoa apps that nice feel "out of the box" would be stuff we  
would be subverting to get down to the level at which Tk needs to  
operate.

Jim

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Jim Ingham
Apple Developer Tools