Also, avoid doing any lengthy operation on the main thread/queue. 

Even if a user opens a file with the intent to analyze, getting stuck for ten 
minutes is a suboptimal experience. 

(Sent from my iPhone.)

--
Conrad Shultz

On Jul 2, 2012, at 12:52, Lee Ann Rucker <lruc...@vmware.com> wrote:

> Subclass [NSWindow restorationClass] and return nil should work.
> 
> ----- Original Message -----
> From: "Todd Heberlein" <todd_heberl...@mac.com>
> To: Cocoa-dev@lists.apple.com
> Sent: Monday, July 2, 2012 10:20:05 AM
> Subject: NSDocument last document loading
> 
> I have a document-based application, and when it starts it tries to 
> automatically load previously opened documents (running on Lion). Is there a 
> way to disable this behavior in the program?
> 
> 
> My problem is that the document loads/analyzes data sets, and some of the 
> very large ones can take up to 10 minutes to analyze. Sitting around waiting 
> 10 minutes for the app to finish starting is a pain, especially when the user 
> just wants to quickly view a new, small data set.
> 
> Thanks,
> 
> Todd
> 
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