Re: NSProgressIndicator (CallBacks)
Re: NSProgressIndicator (CallBacks)
- Subject: Re: NSProgressIndicator (CallBacks)
- From: "Barry" <email@hidden>
- Date: Thu, 19 Jul 2007 08:37:41 +0100
Thanks for this
My app is doing some heavy matrix maths on images - could be busy for many
minutes depending on image size etc..
I guess the CPU is so busy with this it cannot update the display.
I may have to attempt to break the maths into small units & use
multi-threading but this will not be easy !
Regards
----- Original Message -----
From: "Uli Kusterer" <email@hidden>
To: "Barry" <email@hidden>
Cc: "Cocoa-list" <email@hidden>
Sent: Wednesday, July 18, 2007 5:06 PM
Subject: Re: NSProgressIndicator (CallBacks)
On 18.07.2007, at 13:09, Barry wrote:
Thanks Alastair for the help with callbacks - that's now working.
However I the NSProgressIndicator Bar is not being displayed.
I originally had a simple spinner which worked fine.
Using IB I changed it to a Bar & since then - nothing is shown.
You're not doing this in a tight loop, are you? The spinner does its
work in a separate thread and ignores your "increment" calls, while the
progress bar simply marks itself as needing display. The actual drawing
will only happen the next time through the event loop (or more precisely,
the next time the view gets a call to -display *and* someone flushes the
window's back buffer.
Cheers,
-- M. Uli Kusterer
http://www.zathras.de
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