Begin forwarded message:
From: David Blanton <aired...@tularosa.net>
Date: August 27, 2009 9:42:45 AM MDT
To: Graham Cox <graham....@bigpond.com>
Subject: Re: Reasons why QL would fail to create thumbnail?
One of my customers reported last week that our QL Generator
suddenly quit working.
Today the customer reported that after running software update and
finding a huge OS X update they updated and the QL Generator started
working.
On Aug 27, 2009, at 5:34 AM, Graham Cox wrote:
I'm using the following code to generate thumbnail images in one of
my user interfaces. It works fine on my machine, and on all the
ones I've tested, but a couple of users have reported that they
don't see the thumbnails. One user experiencing this problem helped
me to log some results which shows that the QLThumbnailImageCreate
function is returning nil. The docs state that this will return nil
if it can't read the file, but it's the exact same file on every
system, loaded from my app's resources. So why would it fail in a
few percent of cases, but mostly work? All affected users are
running the latest system version.
CFURLRef url = CFURLCreateWithFileSystemPath( NULL, (CFStringRef)
[self path], kCFURLPOSIXPathStyle, NO );
// logging the URL/path at this point shows that the correct path
is being returned from [self path], a path to app internal resources
CGSize maxImageSize = CGSizeMake( 512, 512 );
NSDictionary* options = [NSDictionary dictionaryWithObjectsAndKeys:
(id)kCFBooleanTrue, kQLThumbnailOptionIconModeKey, nil];
CGImageRef qli = QLThumbnailImageCreate( NULL, url, maxImageSize,
(CFDictionaryRef)options );
CFRelease( url );
// on a very few systems, qli is nil here
Is there a possibility that QuickLook can somehow be turned off?
Any ideas?
--Graham
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/airedale%40tularosa.net
This email sent to aired...@tularosa.net
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
