Re: Removing/Adding views in drawRect:

FROM : Uli Kusterer
DATE : Wed Aug 30 22:56:18 2006

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