site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com One caveat: -performSelector:withObject:afterDelay: is defined in the NSObject class, not the NSObject protocol. Since most delegates are defined these days like so: @protocol MyDelegate <NSObject> ... @end there is no guarantee the delegate itself will be able to handle -performSelector:withObject:afterDelay. You can get around this though by declaring your class as: @property(assign) NSObject <MyDelegate> *delegate; On 30 Dec 2009, at 19:21, Helen Cooper wrote:

thanks - obvious. Should have caught this on my own:)

________________________________ From: Bill Bumgarner <bbum@mac.com> To: Helen Cooper <helen.cooper@rocketmail.com> Cc: cocoa-dev@lists.apple.com Sent: Wed, December 30, 2009 12:37:38 PM Subject: Re: Using performSelector:withObject:afterDelay: to call a delegate method?

On Dec 30, 2009, at 9:08 AM, Helen Cooper wrote:

...

[self performSelector:@selector(doSomething00) withObject:NULL afterDelay:4.0];

-(void)doSomething00{ [someDelegate doSomething]; }

I am wondering though, if there might be a way to use performSelector:withObject:afterDelay: (or some similar method) to call the delegate method directly?

[delegate performSelector:@selector(doSomething) withObject:nil afterDelay:4.0];

b.bum

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