On Jul 31, 2009, at 4:18 PM, Agha Khan wrote:

This code works fine with OS 2.2 but does not work with OS 3.x
Can someone point me why it failed?
[...]
".objc_class_name_CALayer", referenced from:
".objc_class_name_NumberLayer in NumberLayer.o
symble(s) not found
collect2: Id returned 1 exit status

Did you remember to link your application to the QuartzCore framework?

Nick Zitzmann
<http://www.chronosnet.com/>

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