This page lists new and recently changed Technical Q&As.

Items are listed in reverse chronological order by publication date. To see the list sorted by the type of revision, click Sort by Revision Type. Items published for the first time (First Version) will be at the top of the list, followed by items with new or changed content (Content Update), followed by items with small fixes, such as typos and format errors, but no significant content changes (Minor Change).

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Document Revision Descriptions
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2008-12-23 Driving OpenGL Rendering Loops (HTML)
Added using CVDisplayLink. Pointed out enabling VSYNC when using NSTimer.
 Content Update Cocoa, Games, Graphics & Imaging
2008-11-24 Core Animation properties and Reference Counting (HTML)
First Version
 First Version Cocoa, Core Foundation, Games, Graphics & Imaging
2008-11-20 Video Digitizers - Adding Clean Aperture and Pixel Aspect Ratio Information (HTML)
Editorial
 Minor Change QuickTime
2008-11-12 Xcode 3 Project Compatiblity (HTML)
First Version
 First Version Tools
2008-11-05 Opening a Web page using an HREF track in QuickTime Player (HTML)
First Version
 First Version Internet & Web, QuickTime
2008-11-05 Playback of QuickTime movie audio through a multi-channel speaker system (HTML)
First Version
 First Version Audio, QuickTime
2008-11-05 QuickTime Audio - Retrieving the correct audio format bit depth value (HTML)
editorial
 Minor Change Audio, QuickTime
2008-10-24 Animating the frame of a CALayer. (HTML)
First Version
 First Version Cocoa, Games, Graphics & Imaging
2008-10-13 Allocating and sharing memory with user space from an I/O Kit driver (HTML) (日本語 HTML)
Modernized content and and made editorial changes.
 Content Update Darwin, Hardware & Drivers
2008-10-13 Generating a Non-Maskable Interrupt (NMI) (HTML) (日本語 HTML)
Modernized and made editorial revisions. Added details related to Intel-based Macs.
 Content Update Audio, Darwin, Hardware & Drivers, Mac OS X Server, Networking, Printing, Tools
2008-10-13 QTKit Capture - Disabling specific audio channels when recording (HTML)
First Version
 First Version Cocoa, QuickTime
2008-10-13 Using GLUT and OpenGL on Mac OS X (HTML)
First Version
 First Version Graphics & Imaging
2008-09-29 Using the ExtAudioFileSeek and ExtAudioFileTell Functions (HTML)
First Version
 First Version Audio
2008-09-24 FSDeleteObject fails with fBsyErr, sometimes (HTML)
Added note to indicate that as of 10.5 (Leopard) - a new File Manager API was added and added the description of it. Cleaned up grammatical issues.
 Minor Change Carbon
2008-09-24 Programmatically causing restart, shutdown and/or logout (HTML) (日本語 HTML)
Updated source listing.
 Minor Change Carbon, Cocoa, Core Foundation, Darwin, Hardware & Drivers, Mac OS X Server, Tools
2008-09-24 Retain Counts of io_object_t Objects in IOKit.framework (HTML) (日本語 HTML)
Minor editorial changes.
 Minor Change Audio, Darwin, Games, Graphics & Imaging, Hardware & Drivers, Networking, Printing, User Experience
2008-09-18 IODeviceTree and the I/O Registry (HTML) (日本語 HTML)
Modernized and made minor editorial changes.
 Minor Change Audio, Darwin, Hardware & Drivers, Networking
2008-09-16 Disabling Processor Cores on a Multi-Core System (HTML) (日本語 HTML)
Added CHUD Processor preference pane. Removed obsolete content. Made editorial changes.
 Content Update Audio, Carbon, Cocoa, Core Foundation, Darwin, Graphics & Imaging, Hardware & Drivers, Performance, Tools
2008-09-16 Mac OS X and root access (HTML)
Modernized and made minor editorial changes.
 Minor Change Darwin, Security
2008-09-16 QTKit Capture - Video Compression Options And Preview (HTML)
First Version
 First Version Cocoa, QuickTime
2008-09-08 Determining if an application uses Objective-C Garbage Collection (HTML)
First Version
 First Version Cocoa
2008-09-08 Expanding Tilde-based paths (HTML)
Simplified POSIX and CF versions using the embedded glob() function.
 Minor Change Carbon, Cocoa, Core Foundation
2008-09-08 Multithreaded usage of the QCRenderer (HTML)
First Version
 First Version Apple Applications, Graphics & Imaging