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Leopard Technical Q&As
Apple provides APIs, file format specifications, and other resources to provide developers with opportunities to interact with and extend various Apple applications.

A guided introduction to writing code that interacts with Apple applications.   Essential information for developers integrating their code with Apple's applications.   C and Objective-C API references organized by framework.
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Multithreaded usage of the QCRenderer (HTML)
QA1538: Describes an issue that may arise when using the QCRenderer in a multi-threaded application.
Quartz Composer 2008-09-08
Releasing the iTunes Windows COM from Managed Code (HTML)
QA1608: Describes how to properly release the iTunes Windows COM from managed code
iTunes 2008-08-21
Bonjour Printer Subtype for HTTP (HTML)
QA1555: Describes how printer vendors can register their bonjour service such that Safari can see them.
Safari 2008-03-25
Why isn't my QuickTime Component recognized by iMovie '08? (HTML)
QA1545: Discusses why iMovie '08 may ignore 3rd party QuickTime Components.
iMovie 2007-10-03
Debugging a WebKit Plug-in in Xcode (HTML)
QA1500: Directions for debugging a WebKit plug-in in Xcode.
Safari 2007-06-05
Availability of Quartz Composer Patches in Web Kit (HTML)
QA1505: Details which Quartz Composer patches are available in Web Kit
Dashboard, Safari 2007-03-05
Intel-Based Macs, Dashboard, Safari, and You (HTML)
QA1451: Concerns and details regarding widget and web development for Intel-based Macintosh computers
Dashboard, Safari 2006-12-13
Final Cut Pro - Preferred Video Media Time Scales and Sample Durations (HTML)
QA1447: Lists the preferred time scales/sample durations for media created for use with FCP.
Final Cut Pro/Final Cut Express 2005-10-24
What is the Timebase submenu available in the contextual menu of some patches in Quartz Composer? (HTML)
QA1427: Describes the timebase system used by patches in Quartz Composer.
Quartz Composer 2005-06-15
How can I optimize a Quartz Composer composition depending on the hardware it runs on? (HTML)
QA1433: Explains how to design compositions that adapt to the hardware limitations.
Quartz Composer 2005-06-01
Crash in ABAddPropertiesAndTypes (HTML)
QA1404: How to correctly add custom Address Book properties using ABAddPropertiesAndTypes
Address Book 2005-04-04
Movie Export Component - How to ensure Final Cut Pro recognizes your exporter (HTML)
QA1415: Explains how to make sure Final Cut Pro will recognizes a custom QuickTime movie export component.
Final Cut Pro/Final Cut Express 2005-03-08
Sending an Email (HTML)
QA1084: Shows how to create an email in the user's prefered email application.
Mail 2004-11-05
Does Safari support 128-bit encryption? (HTML)
QA1320: Discusses support for 128-bit encryption in Apple's Safari web browser.
Safari 2004-09-10
Adding menu separator items to controls in a Sherlock channel (HTML) (日本語 HTML)
QA1219: Using menu-item separators in an NSPopUpButton control of a Sherlock channel.
Sherlock 2003-01-21