Leopard Reference Library
This page lists new and recently changed documents, including Articles, Guides, Reference, Release Notes, Sample Code, Technical Notes, and Technical Q&As. Most documents have a revision history, which details additions and changes to that document since the previous version. Look for "Revision History" at the bottom of the document or in the document's table of contents.

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).

New and updated Reference Library documents are announced in the bi-weekly Apple Developer Connection News, available as an option to ADC members. See the Membership Overview page for details on joining.
Document Revision Descriptions
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2009-04-29 File Wrappers with Core Data Documents (HTML) (DMG) (ZIP)
This sample demonstrates how directory file wrappers can be used with NSPersistentDocument.
 First Version Sample Code Data Management, File Management
2009-03-04 Core Data Snippets (HTML) (PDF)
New document that provides snippets of code that you can use when writing a program that uses Core Data.
 First Version Guides Data Management
2009-02-04 NSPersistentDocument Core Data Tutorial for Mac OS X v10.4. (HTML) (PDF)
Re-release of Mac OS X v10.4 version of NSPersistentDocument Core Data Tutorial.
 First Version Guides Data Management, Design Guidelines
2009-01-26 DOMHTMLDocument Additions Reference (HTML) (PDF)
First revision of this document.
 First Version Reference User Experience
2009-01-06 Foundation Release Notes (10.4 and earlier) (HTML)
Updated with information on Mac OS X 10.4.
 First Version Release Notes General
2009-01-06 Web Services Core Framework Reference (HTML)
Describes the Web Services Core API.
 First Version Reference Internet & Web
2008-11-24 Core Animation properties and Reference Counting (HTML)
First Version
 First Version Technical Q&As Games, Graphics & Imaging, Objective-C Language, Resource Management
2008-10-24 Animating the frame of a CALayer. (HTML)
First Version
 First Version Technical Q&As Graphics & Imaging
2008-10-15 DOMElement Additions Reference (HTML)
First revision of this document.
 First Version Reference User Experience
2008-10-15 NSTextInputClient Protocol Reference (HTML) (PDF)
New document that describes the protocol enabling conforming objects to receive keyboard input as properly formed text.
 First Version Reference Events & Other Input, Text & Fonts
2008-10-13 QTKit Capture - Disabling specific audio channels when recording (HTML)
First Version
 First Version Technical Q&As QuickTime
2008-10-13 SBSystemPrefs (HTML) (DMG) (ZIP)
Shows how to use Scripting Bridge to display a preference pane in System Preferences.
 First Version Sample Code Interapplication Communication, Scripting & Automation
2008-09-30 CALayerEssentials (HTML) (DMG) (ZIP)
Demonstrates the basics of setting up various Core Animation layers
 First Version Sample Code Graphics & Imaging
2008-09-16 QTKit Capture - Video Compression Options And Preview (HTML)
First Version
 First Version Technical Q&As QuickTime
2008-09-08 Determining if an application uses Objective-C Garbage Collection (HTML)
First Version
 First Version Technical Q&As Objective-C Language
2009-04-08 NSScroller Class Reference (HTML) (PDF)
Updated for Mac OS X v10.5.
 Content Update Reference User Experience
2009-04-08 NSSplitView Class Reference (HTML) (PDF)
Added splitView:shouldHideDividerAtIndex: delegate method. Added divider style and color methods.
 Content Update Reference User Experience
2009-04-07 QTCoreVideo301 (HTML) (DMG) (ZIP)
Fixed an issue with shader units that caused an OpenGL error.
 Content Update Sample Code Graphics & Imaging, QuickTime
2009-03-04 Dock Tile Programming Guide (HTML) (PDF)
Updated to include guidelines for Cocoa programmers.
 Content Update Guides User Experience
2009-03-04 NSDockTile Class Reference (HTML) (PDF)
Updated to describe differences in behavior between application and window dock tiles.
 Content Update Reference User Experience
2009-03-03 64-Bit Transition Guide for Cocoa (HTML) (PDF)
Updated to add a section on tuning memory usage in 64-bit Cocoa applications.
 Content Update Guides Design Guidelines
2009-02-13 PMPrinterTest (HTML) (DMG) (ZIP)
Now uses a table view to display the results, and bindings to fill the table view. Cleaned up numerous memory leaks.
 Content Update Sample Code Printing
2009-02-04 Key-Value Coding Programming Guide (HTML) (PDF)
Added substantial task information and sample code.
 Content Update Guides Data Management, Design Guidelines
2009-01-06 SFAuthorization Class Reference (HTML) (PDF)
permitWithRight:flags: and permitWithRights:flags:environment:authorizedRights are deprecated and replaced with obtainWithRight:flags: and obtainWithRights:flags:environment:authorizedRights:error:
 Content Update Reference Security
2008-11-19 Certificate, Key, and Trust Services Programming Guide (HTML) (PDF)
Added information about, and code samples for, iPhone OS.
 Content Update Guides Security
2008-11-19 Certificate, Key, and Trust Services Reference (HTML) (PDF)
Updated to Mac OS X v 10.5.
 Content Update Reference Security
2008-11-19 Cocoa Fundamentals Guide (HTML) (PDF)
Made various small corrections.
 Content Update Guides Design Guidelines
2008-11-19 Code Signing Guide (HTML) (PDF)
Added a chapter describing the code signing requirement language.
 Content Update Guides Security
2008-11-19 Property List Programming Guide (HTML) (PDF)
Combined Cocoa and Core Foundation documents on property lists and reorganized material. Added a "Quick Start" mini-tutorial and a chapter on programmatically creating property lists. Mentioned iPhone OS as a platform on which property lists are important.
 Content Update Guides Data Management
2008-11-13 Core Animation Programming Guide (HTML) (PDF)
Introduces iPhone SDK content to Mac OS X content. Corrects frame animation capabilities.
 Content Update Guides Graphics & Imaging
2008-11-13 NSHTTPCookie Class Reference (HTML) (PDF)
Added isHTTPOnly method.
 Content Update Reference Internet & Web, Networking
2008-10-15 Security Overview (HTML) (PDF)
Added a link to the iPhone OS Technology Overview.
 Content Update Guides Security
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 Technical Q&As Performance
2009-05-06 Binary Data Programming Guide for Cocoa (HTML) (PDF)
Corrected the code listing under Modifying Bytes to account for the null terminator on the strings.
 Minor Change Guides Data Management
2009-05-06 CFNetwork Programming Guide (HTML) (PDF)
Corrected typos.
 Minor Change Guides Networking, Security
2009-05-06 Foundation Constants Reference (HTML) (PDF)
Corrected the definition of NSDecimalNoScale.
 Minor Change Reference Data Management, Objective-C Language
2009-05-06 Image Unit Tutorial (HTML) (PDF)
Updated line 7 of listing 2-7.
 Minor Change Guides Graphics & Imaging
2009-05-06 IMKServerInput Protocol Reference (HTML) (PDF)
Clarified constant descriptions.
 Minor Change Reference Internationalization, Text & Fonts
2009-05-06 Key-Value Observing Programming Guide (HTML) (PDF)
Clarified Core Data requirement in Registering Dependent Keys.
 Minor Change Guides Data Management, Design Guidelines
2009-05-06 Memory Management Programming Guide for Cocoa (HTML) (PDF)
Corrected typographical errors.
Minor Change Guides Design Guidelines, Objective-C Language
2009-05-06 NSAnimatablePropertyContainer Protocol Reference (HTML) (PDF)
Corrected typos.
 Minor Change Reference Graphics & Imaging
2009-05-06 NSCountedSet Class Reference (HTML) (PDF)
Referenced CFBag, which implements similar functionality.
 Minor Change Reference Data Management
2009-05-06 NSData Class Reference (HTML) (PDF)
Added subclassing notes. Clarified behavior of bytes and getData:length: methods.
 Minor Change Reference Data Management
2009-05-06 NSError Class Reference (HTML) (PDF)
Added a link to the Foundation error constants.
 Minor Change Reference Design Guidelines
2009-05-06 NSSegmentedCell Class Reference (HTML) (PDF)
Added missing API.
 Minor Change Reference User Experience
2009-05-06 NSSegmentedControl Class Reference (HTML) (PDF)
Added missing API.
 Minor Change Reference User Experience
2009-05-06 The Objective-C 2.0 Programming Language (HTML) (PDF)
Updated article on Mixing Objective-C and C++.
 Minor Change Guides Objective-C Language, Tools
2009-05-06 Predicate Programming Guide (HTML) (PDF)
Corrected a typographical error.
 Minor Change Guides Data Management, Design Guidelines
2009-05-06 QTCaptureDevice Class Reference (HTML) (PDF)
Fixed enumeration and constant listings. Minor fixes.
 Minor Change Reference QuickTime
2009-05-06 Search Kit Reference (HTML) (PDF)
Added notes that SKSearch and SKIndex objects cannot be used with CFMakeCollectable.
 Minor Change Reference Data Management, Text & Fonts, User Experience
2009-05-06 Stream Programming Guide for Cocoa (HTML) (PDF)
Added a missing comment to a code sample.
 Minor Change Guides Data Management, Networking
2009-05-01 Driving OpenGL Rendering Loops (HTML)
Corrected a typo.
 Minor Change Technical Q&As Events & Other Input, Games, Graphics & Imaging
2009-04-08 CalCalendarStore Class Reference (HTML) (PDF)
Minor edits throughout.
 Minor Change Reference Apple Applications
2009-04-08 NSButtonCell Class Reference (HTML) (PDF)
Added style override details to setAttributedTitle:.
 Minor Change Reference Events & Other Input, User Experience
2009-04-08 NSDictionary Class Reference (HTML) (PDF)
Corrected typographical errors.
 Minor Change Reference Data Management, Design Guidelines
2009-04-08 NSNetService Class Reference (HTML) (PDF)
Miscellaneous edits.
 Minor Change Reference Interapplication Communication, Internet & Web, Networking
2009-04-08 NSNetServiceBrowser Class Reference (HTML) (PDF)
Miscellaneous edits.
 Minor Change Reference Interapplication Communication, Internet & Web, Networking
2009-04-08 NSUserDefaults Class Reference (HTML) (PDF)
Updated property list storage details.
 Minor Change Reference Data Management, User Experience
2009-04-08 QTCaptureAudioPreviewOutput Class Reference (HTML) (PDF)
Fixed parameter descriptions.
 Minor Change Reference QuickTime
2009-04-08 QTCaptureDeviceInput Class Reference (HTML) (PDF)
Minor fixes.
 Minor Change Reference QuickTime
2009-04-08 QTCaptureInput Class Reference (HTML) (PDF)
Minor technical fixes.
 Minor Change Reference QuickTime
2009-04-08 QTCaptureView Class Reference (HTML) (PDF)
Modified descriptions. Fixed typos. MInor fixes.
 Minor Change Reference QuickTime
2009-04-08 QTDataReference Class Reference (HTML) (PDF)
Added parameter descriptions, updated constant listings. Minor fixes.
 Minor Change Reference QuickTime
2009-04-08 Text System Overview (HTML) (PDF)
Added link in "Building a Text Editor in 15 Minutes" to information explaining how to configure an application's document types settings.
 Minor Change Guides Text & Fonts
2009-04-08 WebArchive Class Reference (HTML) (PDF)
Minor edits throughout.
 Minor Change Reference User Experience
2009-04-08 WebEditingDelegate Protocol Reference (HTML) (PDF)
Minor edits throughout.
 Minor Change Reference User Experience
2009-04-08 WebFrame Class Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebFrameLoadDelegate Protocol Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebJavaPlugIn Protocol Reference (HTML) (PDF)
Added separate parameter and return-value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebOpenPanelResultListener Protocol Reference (HTML) (PDF)
Added separate parameter and return-value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebPlugIn Protocol Reference (HTML) (PDF)
Added separate parameter and return-value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebPlugInContainer Protocol Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebPlugInViewFactory Protocol Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebPolicyDelegate Protocol Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebResource Class Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebScripting Protocol Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebScriptObject Class Reference (HTML) (PDF)
Added separate parameter and return value descriptions.
 Minor Change Reference User Experience
2009-04-08 WebView Class Reference (HTML) (PDF)
Made minor edits throughout.
 Minor Change Reference User Experience
2009-04-07 QTCoreVideo202 (HTML) (DMG) (ZIP)
Performance improvement with movie pixel buffersand streaming textures.
 Minor Change Sample Code Graphics & Imaging, QuickTime
2009-03-12 Keychain Services Programming Guide (HTML) (PDF)
Corrected a typo.
 Minor Change Guides Security
2009-03-08 Cocoa Bindings Programming Topics (HTML) (PDF)
Added warning about lack of key-value observing change values to Controller Key-Value Observing Compliance.
 Minor Change Guides Design Guidelines, User Experience
2009-03-05 Low-Level File Management Programming Topics (HTML) (PDF)
Corrected a broken link.
 Minor Change Guides File Management
2009-03-04 CalAlarm Class Reference (HTML)
Minor updates throughout.
 Minor Change Reference Apple Applications
2009-03-04 CalEvent Class Reference (HTML) (PDF)
Minor updates throughout.
 Minor Change Reference Apple Applications
2009-03-04 CalRecurrenceRule Class Reference (HTML) (PDF)
Minor edits throughout.
 Minor Change Reference Apple Applications
2009-03-04 CAMediaTiming Protocol Reference (HTML) (PDF)
Documented kCAFillModeFrozen as deprecated.
 Minor Change Reference Graphics & Imaging
2009-03-04 Color Programming Topics for Cocoa (HTML) (PDF)
Removed statement that drawing to printers doesn't support alpha.
 Minor Change Guides Graphics & Imaging
2009-03-04 Core Data Overview (HTML)
First version of a new document that describes a roadmap for learning Core Data.
 Minor Change Getting Started Data Management
2009-03-04 Core Data Programming Guide (HTML) (PDF)
Minor revision to accommodate new Getting Started document.
 Minor Change Guides Data Management, Design Guidelines
2009-03-04 Core Data Utility Tutorial (HTML) (PDF)
Updated title to better reflect purpose.
 Minor Change Guides Data Management, Design Guidelines
2009-03-04 Error Handling Programming Guide For Cocoa (HTML) (PDF)
Corrected a link error.
 Minor Change Guides Design Guidelines, Objective-C Language
2009-03-04 IKSlideshowDataSource Protocol Reference (HTML) (PDF)
Adding note that data source methods may be called on secondary threads.
 Minor Change Reference Graphics & Imaging
2009-03-04 NSATSTypesetter Class Reference (HTML) (PDF)
Removed reference to ATSUI.
 Minor Change Reference Text & Fonts
2009-03-04 NSPointerArray Class Reference (HTML) (PDF)
Clarified behavior in fast enumeration.
 Minor Change Reference Data Management
2009-03-04 NSWindow Class Reference (HTML) (PDF)
Fixed several typographical errors, added information to setFrameAutosaveName:, and documented several undocumented symbols.
 Minor Change Reference Events & Other Input, Graphics & Imaging, User Experience
2009-03-04 QTCaptureOutput Class Reference (HTML) (PDF)
Minor edit fixes.
 Minor Change Reference QuickTime
2009-03-04 QTCaptureVideoPreviewOutput Class Reference (HTML) (PDF)
Minor edit fixes.
 Minor Change Reference QuickTime
2009-03-04 QTMedia Class Reference (HTML) (PDF)
Added parameter descriptions and constant groupings.
 Minor Change Reference QuickTime
2009-03-04 QTTrack Class Reference (HTML) (PDF)
Fixed constants listings; minor edits.
 Minor Change Reference QuickTime
2009-03-04 WebDocumentText Protocol Reference (HTML) (PDF)
Added separate parameter and return-value descriptions.
 Minor Change Reference User Experience
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