On Aug 15, 2011, at 07:50 PM, David Duncan wrote:
> On Aug 15, 2011, at 10:47 AM, Kyle Sluder wrote:
>
>> On Mon, Aug 15, 2011 at 10:45 AM, David Duncan <david.dun...@apple.com>
>> wrote:
>>> In either case, the best general way to determine availability of
>>> weak-linked implementations is to test for them directly rather than using
>>> a system version check (like gestalt). If your using Clang (which I suspect
>>> you are not given your error) you could just use:
>>>
>>> "if ([NSPopover class]) { /* do stuff with popovers */ } else { /* do stuff
>>> without */ }"
>>
>> Is it the case that this check will only work on 10.6.8 or newer, and
>> that one should fall back on NSClassFromString() if supporting an
>> older version of Snow Leopard?
>
>
> I'd actually forgotten that this required 10.6.8. If you can require 10.6.8,
> I would use the new style universally. If you cannot I would use the
> NSClassFromString style until you can.
I was testing on 10.6.8 but couldn't make the Clang + [NSPopover class] scheme
work. In the end the NSClassFromString wins the race. Still I'd like to
understand why the other scheme doesn't work if it's expected to. I guess I'll
try that again tomorrow with fresh eyes.
Martin
> --
> David Duncan
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: martin.hewit...@aei.mpg.de
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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