Re: Removing/Adding views in drawRect:
Re: Removing/Adding views in drawRect:
- Subject: Re: Removing/Adding views in drawRect:
- From: Uli Kusterer <email@hidden>
- Date: Wed, 30 Aug 2006 22:56:18 +0200
Am 30.08.2006 um 20:40 schrieb Mike R. Manzano:
(1) Is it prudent to add or remove subviews in drawRect:?
No. Moving views can cause a view to be invalidated, which would
cause drawRect: to be called again. If you search the list archives
you'll se epostings from lots of people who did it anyway and got
hilarious endless loops, dropped updates and other odd behaviour.
If not,
(2) Is it prudent to add or remove views somewhere else during a
window live resize?
I think there's a notification sent when auto-resizing happens.
Alternatively, you could just override that method (don't remember
the name, but a quick read of NSView.h should make it obvious) that's
called when a superview is resized and asked to resize its subviews.
That should be a safe place to show/hide subviews before calling
through to super.
Cheers,
-- M. Uli Kusterer
http://www.zathras.de
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