Re: Need help for user interface in COCOA + Objective C
Re: Need help for user interface in COCOA + Objective C
- Subject: Re: Need help for user interface in COCOA + Objective C
- From: Shawn Erickson <email@hidden>
- Date: Tue, 31 Mar 2009 07:46:45 -0700
On Tue, Mar 31, 2009 at 5:40 AM, Mangesh Kute <email@hidden> wrote:
> Hi,
>
> I am using COCOA + Objective C for creating user interface for my application.
"Cocoa"
> I created nib for displaying message to user.
> When I load this nib from main thread, it works fine.
> But when I load it from thread it displays blank white window and
> processor get hogged.
Review the following, in particular the section about AppKit (also
best to read the whole document)...
<http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/ThreadSafetySummary/ThreadSafetySummary.html#//apple_ref/doc/uid/10000057i-CH12-SW1>
"You should create, destroy, resize, move, and perform other
operations on NSView objects only from the main thread of an
application."
> Can someone please help me?
You should only create view object graphs, etc. from the main thread.
Look at using -[NSObject
performSelectorOnMainThread:withObject:waitUntilDone:].
-Shawn
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