You'd keep most of what you have, but just add in the negation:

On May 21, 2012, at 11:47 AM, Chris Paveglio wrote:

> I'm doing an NSMetadataQuery something like this:
> 
> NSPOT = NSLikePredicateOperatorType;
> myPredicate = [NSComparisonPredicate
> predicateWithLeftExpression:[NSExpressionexpressionForKeyPath:@"*"] 
> rightExpression:[NSExpressionexpressionForConstantValue:@"somestring"]
> modifier:NSDirectPredicateModifier
> type:NSPOT
> options:options];

NSPredicate *notMyPredicate = [NSCompoundPredicate 
notPredicateWithSubpredicate:myPredicate];
[myQuery setPredicate:notMyPredicate];

HTH,

Dave
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