When a user buys we ask for a registration on first run. We like to get the OS
name and version number from their system to include in out reg database.
I just want to be sure that using Gestalt will not break in the future or is
there a better way than that below to get the OS version.
- (void) getSystemVersionMajor:(unsigned *)major minor:(unsigned *)minor
bugFix:(unsigned *)bugFix {
OSErr err;
SInt32 systemVersion, versionMajor, versionMinor, versionBugFix;
if ((err = Gestalt(gestaltSystemVersion, &systemVersion)) != noErr) goto
fail;
if (systemVersion < 0x1040)
{
if (major) *major = ((systemVersion & 0xF000) >> 12) * 10 +
((systemVersion & 0x0F00) >> 8);
if (minor) *minor = (systemVersion & 0x00F0) >> 4;
if (bugFix) *bugFix = (systemVersion & 0x000F);
}
else
{
if ((err = Gestalt(gestaltSystemVersionMajor, &versionMajor)) != noErr)
goto fail;
if ((err = Gestalt(gestaltSystemVersionMinor, &versionMinor)) != noErr)
goto fail;
if ((err = Gestalt(gestaltSystemVersionBugFix, &versionBugFix)) !=
noErr) goto fail;
if (major) *major = versionMajor;
if (minor) *minor = versionMinor;
if (bugFix) *bugFix = versionBugFix;
}
return;
fail:
NSLog(@"Unable to obtain system version: %ld", (long)err);
if (major) *major = 10;
if (minor) *minor = 0;
if (bugFix) *bugFix = 0;
}
-koko
On Sep 21, 2011, at 1:32 PM, Sean McBride wrote:
> On Wed, 21 Sep 2011 13:26:32 -0600, koko said:
>
>> Is Gestalt(gestaltSystemVersion, &MacVersion) the wat toget OSX versions
>> today and moving forward?
>
> No. Because it's BCD and breaks for values larger than 9. See Gestalt.h.
> Instead, use:
>
> SInt32 major = 0;
> (void)Gestalt (gestaltSystemVersionMajor, &major);
>
> SInt32 minor = 0;
> (void)Gestalt (gestaltSystemVersionMinor, &minor);
>
> SInt32 fix = 0;
> (void)Gestalt (gestaltSystemVersionBugFix, &fix);
>
> Cheers,
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng [email protected]
> Rogue Research www.rogue-research.com
> Mac Software Developer Montréal, Québec, Canada
>
>
>
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