Am 23.04.2008 um 00:25 schrieb Rick Mann:
I wrote a routine that creates a CFStringRef from some USB calls. I
use it like this:
NSString* s = (NSString*) createStringDescriptor(dev, stringIndex);
[mSerialNumberDisplay setStringValue: [s lowercaseString]];
[s release];
Two main questions: am I right to release the bridged NSString* s?
and, what happens in -lowercaseString? How does that get released?
Calling release on a CFString follows the same rules as calling it
on an NSString*, and is equivalent to calling CFRelease(). Be careful,
though, if you get a CFString or OSString from IOKit ... someone there
apparently wasn't told about the rules in the rest of
CoreFoundation... they don't follow the Create/Copy naming scheme
consistently, and instead have weird phrases in the docs about
"consuming a refcount" and things like that.
But apart from that, the rules in the CoreFoundation docs apply, so
assuming you're using a CFStringCreateXXX call, yes, you should
release this string.
Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.zathras.de
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