[Openmcl-devel] Core Animation demo fails under OSX 10.6

Raffael Cavallaro raffaelcavallaro at mac.com
Thu Aug 26 13:57:27 UTC 2010

On Aug 26, 2010, at 9:13 AM, Arthur Cater wrote:

> Is it likely, do you think, that subviews of a content-view could not have layers?

They'd have to be configured *after* being added to the view hierarchy, which probably means overriding addSubview:. See below.

> In other words, would a window need to have a content-view that has layers and
> no subviews, if one wants layers anywhere? And goodbye to any idea of a
> layered-view subclass that acts in most respects like any other view subclass?

You could override setContentView: in your custom window class (and addSubview: in your layered-view class) and ensure that only after it sets your layered-view as it's contentView (or subView), it has your layered-view (or subView) do its layer initialization. i.e., you could call your super's addSubview: or setContentView:, and only after this super call returns, do the contentView or subView layer initialization.

warmest regards,


Raffael Cavallaro
raffaelcavallaro at me.com

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