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Re: Qustion about possibly bad advice in NSView documentation
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Re: Qustion about possibly bad advice in NSView documentation


  • Subject: Re: Qustion about possibly bad advice in NSView documentation
  • From: Uli Kusterer <email@hidden>
  • Date: Wed, 26 Sep 2007 23:33:30 +0200

Am 26.09.2007 um 03:52 schrieb Scott Ribe:
As for NSInvocation, obviously you can use NSInvocation to pass
arguments of pretty much any type you like.

As long as they're 8 bytes or smaller? And yes, I think that means they
won't work with NSRects either. I ran into this with some C++ integration;
solution was to pass pointers instead of values...

That's not a limitation of NSInvocation. That's how the ABI works under the hood: structs 8 bytes or smaller get pushed on the stack directly, while everything else is passed by reference. See


<http://developer.apple.com/documentation/DeveloperTools/Conceptual/ LowLevelABI/Articles/IA32.html>

for all the gory details.

Cheers,
-- M. Uli Kusterer
http://www.zathras.de



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References: 
 >Re: Qustion about possibly bad advice in NSView documentation (From: Scott Ribe <email@hidden>)

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