The documentation says that the default resize period is subject to change 
between OS releases, and it's possible others will have changed it on their 
own. (I've run into people who are at war with animations, and would be furious 
if their settings were undone.) You should collect the value before changing 
it, so you can restore it exactly afterwards.

A question: Why do you want a sheet to pop into view instead of acting as users 
expect? I am willing to trust you have a good reason, but I'm curious.

        — F

On 16 May 2013, at 5:03 PM, Peng Gu <[email protected]> wrote:

> Found the answer.
> 
> By setting the animation speed to a low value (not 0, otherwise 0.2 is used
> by default)
> 
> [[NSUserDefaults standardUserDefaults] setFloat:0.00001 forKey:
> @"NSWindowResizeTime"];
> 
> [NSApp beginSheet:....]
> 
> [[NSUserDefaults standardUserDefaults] setFloat:0.2 forKey:
> @"NSWindowResizeTime"];
> 

-- 
Fritz Anderson
Xcode 4 Unleashed: 4.5 supplement for free!
http://www.informit.com/store/xcode-4-unleashed-9780672333279


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