objective c id *

Posted by joels on Stack Overflow See other posts from Stack Overflow or by joels
Published on 2010-03-08T22:43:45Z Indexed on 2010/03/08 22:51 UTC
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cocoa

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objective-c

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pointer

I am using the KVO validations in my cocoa app. I have a method

- (BOOL)validateName:(id *)ioValue error:(NSError **)outError

My controls can now have their bindings validate. How do I invoke that method with a id * NOT id

To use the value that is passed in (a pointer to a string pointer) I call this:

NSString * newName = (NSString *)*ioValue;
if ([newName length] < 4) {

otherwise i get bad exec crashes...

passing in with type casting doesnt work: (id *)myStringVar

passing in with a regular id doesnt work either : (id) myStringVar

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