CALayer - delegate not being called?

FROM : Neil Clayton
DATE : Tue Nov 27 23:39:54 2007

Hi All!

I'm playing around with CoreAnim, and having trouble getting delegates 
working. I figure I must be doing something very very wrong here.

in awakeFromNib, of an NSView that is visible:

   CALayer *main = [self setupLayer];
   self.layer = main;
   self.wantsLayer = YES;

This shows OK - as in I get a white border around the layer in my view 
- since that's what I've setup in setupLayer.


- (CALayer*) setupLayer {
   CALayer *layer = [CALayer layer];
   [layer setDelegate:[[[SimpleDelegate alloc] init] retain]];

   // Set the white border so I can tell the layer is there
   [self setupBasicLayerProperties:layer];
   return layer;
}

My delegate (SimpleDelegate) does this:
- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)theContext {
   NSLog(@"go");
....
...
...
}

But I never see a "go" in console - it's never called.
I'm clearly missing something here - anyone got any pointers on 
getting delegates/CALayer working as expected?

--
Regards,
Neil Clayton