Re: Determining OS at Runtime
Re: Determining OS at Runtime
- Subject: Re: Determining OS at Runtime
- From: Mark Munz <email@hidden>
- Date: Fri, 3 Jul 2009 09:00:48 -0700
You might also just use Gestalt:
BOOL IsLeopardOrLater(void)
{
SInt32 vers;
Gestalt(gestaltSystemVersion,&vers);
return (vers >= 0x1050);
}
On Fri, Jul 3, 2009 at 6:59 AM, Steve Christensen<email@hidden> wrote:
> On Jul 2, 2009, at 9:56 PM, Andrew Farmer wrote:
>
>> On 2 Jul 2009, at 16:29, Steve Christensen wrote:
>>>
>>> If you want to make sure that you don't include any "old" code in your
>>> executable when you decide to make 10.5 (for example) your base OS version,
>>> you could arrange your code like this:
>>>
>>> #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
>>> if (SomeLeopardFunction == NULL)
>>> TigerFunction();
>>> else
>>> #endif
>>> SomeLeopardFunction();
>>
>> Preprocessor directives take effect at compile time, not at runtime.
>
> Yes, I'm aware of that. My point was that by writing the code in this
> fashion, when you start building your software to -require- a minimum of
> 10.5, any pre-10.5 code will be compiled out because then
> MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5 so all you're left
> with is the call to SomeLeopardFunction().
>
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--
Mark Munz
unmarked software
http://www.unmarked.com/
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