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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2008-10-15 NSExpression Class Reference (HTML) (PDF)
Corrected SUBQUERY expression example.
 Minor Change Reference Data Management
2008-10-15 NSFileHandle Class Reference (HTML) (PDF)
Clarified description of closeFile and added link to related sample code project.
 Minor Change Reference File Management
2008-10-15 NSFileManager Class Reference (HTML) (PDF)
Corrected typographical errors.
 Minor Change Reference File Management, Resource Management
2008-10-15 NSFileWrapper Class Reference (HTML) (PDF)
Corrected -initWithSerializedRepresentation: method description.
 Minor Change Reference Data Management, File Management, Resource Management
2008-10-15 NSGarbageCollector Class Reference (HTML) (PDF)
Clarified use of -isEnabled.
 Minor Change Reference Objective-C Language
2009-01-06 NSGlyphStorage Protocol Reference (HTML) (PDF)
Reformatted parameter descriptions.
 Minor Change Reference Text & Fonts
2009-01-06 NSGradient Class Reference (HTML) (PDF)
Updated the method descriptions that involve drawing radial gradients with relative center positions.
 Minor Change Reference Graphics & Imaging
2009-02-04 NSHelpManager Class Reference (HTML) (PDF)
Removed all references to using Interface Builder.
 Minor Change Reference Events & Other Input, Resource Management, User Experience
2008-11-13 NSHTTPCookie Class Reference (HTML) (PDF)
Added isHTTPOnly method.
 Content Update Reference Internet & Web, Networking
2009-01-06 NSImage Class Reference (HTML) (PDF)
Updated the description of the alignmentRect method.
 Minor Change Reference Graphics & Imaging
2009-01-06 NSImageCell Class Reference (HTML) (PDF)
Added descriptions for the NSImageAlignment constants.
 Minor Change Reference User Experience
2009-01-06 NSImageRep Class Reference (HTML) (PDF)
Added a definition for the NSImageRepRegistryChangedNotification macro.
 Minor Change Reference Graphics & Imaging
2008-10-15 NSIndexPath Class Reference (HTML) (PDF)
Clarified indexAtPosition: description.
Minor Change Reference Data Management
2008-10-15 NSInvocation Class Reference (HTML) (PDF)
Updated code examples to use NSInteger instead of raw types.
 Minor Change Reference Interapplication Communication, Objective-C Language
2008-10-15 NSKeyedArchiver Class Reference (HTML) (PDF)
Clarified behavior of encodeObject:forKey: for nil values.
 Minor Change Reference Data Management
2008-10-15 NSKeyedUnarchiver Class Reference (HTML) (PDF)
Added notes that keys must not be nil.
 Minor Change Reference Data Management
2009-02-04 NSKeyValueCoding Protocol Reference (HTML) (PDF)
Accessor search descriptions of setValue:forKey:, valueForKey:, mutableArrayValueForKey:, and mutableSetValueForKey: now point to the Key-Value Coding Programming Guide.
 Minor Change Reference Data Management, Design Guidelines
2008-12-20 NSLayoutManager Class Reference (HTML) (PDF)
Added descriptions of NSGlyphStorage protocol methods.
 Minor Change Reference Text & Fonts
2008-10-15 NSManagedObject Class Reference (HTML) (PDF)
Clarified descriptions of primitiveValueForKey: and setPrimitiveValue:forKey:.
 Minor Change Reference Data Management
2008-10-15 NSManagedObjectContext Class Reference (HTML) (PDF)
Clarifed return value for countForFetchRequest:error:.
 Minor Change Reference Data Management
2008-10-15 NSMatrix Class Reference (HTML) (PDF)
Clarified usage of selectAll:.
 Minor Change Reference User Experience
2009-02-04 NSMenuView Class Reference (HTML) (PDF)
Added information regarding what to use in place of NSMenuView.
Minor Change Reference User Experience
2008-10-15 NSMethodSignature Class Reference (HTML) (PDF)
Added declaration of signatureWithObjCTypes:.
 Minor Change Reference Objective-C Language
2008-11-17 NSMutableArray Class Reference (HTML) (PDF)
Noted in overview that predicates are not available on iPhone OS.
 Minor Change Reference Data Management
2008-10-15 NSMutableParagraphStyle Class Reference (HTML) (PDF)
Removed erroneous statement that 0 is not accepted by setTighteningFactorForTruncation: method.
 Minor Change Reference Data Management, Text & Fonts
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
2008-10-15 NSNetServices and CFNetServices Programming Guide (HTML) (PDF)
Updated code listings.
 Minor Change Guides Networking
2008-11-19 NSNumberFormatter Class Reference (HTML) (PDF)
Added note about supported behaviors for iPhone OS.
 Minor Change Reference Data Management, User Experience
2009-02-04 NSObject Class Reference (HTML) (PDF)
Added note about managing scarce resources in dealloc.
 Minor Change Reference Design Guidelines, Objective-C Language
2008-12-22 NSObject Protocol Reference (HTML) (PDF)
Updated discussion of retainCount method.
 Minor Change Reference Design Guidelines, Objective-C Language
2008-10-15 NSOpenGLPixelFormat Class Reference (HTML) (PDF)
Updated the the constants section to reflect changes in Mac OS X v10.5.
 Minor Change Reference Graphics & Imaging
2009-02-04 NSOpenPanel Class Reference (HTML) (PDF)
Added more specific information regarding didEndSelector behavior in panel-running methods.
 Minor Change Reference Events & Other Input, File Management, User Experience
2008-11-19 NSOperation Class Reference (HTML) (PDF)
Updated the guidelines related to KVO compliance.
 Minor Change Reference Process Management
2008-11-19 NSOperationQueue Class Reference (HTML) (PDF)
Updated the guidance related to KVO-compliant properties.
 Minor Change Reference Process Management
2009-02-04 NSOutlineView Class Reference (HTML) (PDF)
Added documentation for method outlineView:selectionIndexesForProposedSelection:.
 Minor Change Reference User Experience
2009-01-06 NSOutputStream Class Reference (HTML) (PDF)
Miscellaneous edits.
 Minor Change Reference Data Management, File Management, Networking
2009-01-06 NSPanel Class Reference (HTML) (PDF)
Added information about NSHUDWindowMask constant.
 Minor Change Reference Events & Other Input, Graphics & Imaging, User Experience
2008-10-15 NSPasteboard Class Reference (HTML) (PDF)
Clarified behavior of pasteboardChangedOwner:.
 Minor Change Reference Interapplication Communication, User Experience
2009-02-04 NSPersistentDocument Core Data Tutorial (HTML) (PDF)
Updated description of editing the plist file.
 Minor Change Guides Data Management, Design Guidelines
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
2009-03-04 NSPointerArray Class Reference (HTML) (PDF)
Clarified behavior in fast enumeration.
 Minor Change Reference Data Management
2008-10-15 NSPointerFunctions Class Reference (HTML) (PDF)
Added definition of NSPointerFunctionsOpaqueMemory.
 Minor Change Reference Data Management
2008-10-15 NSPopUpButton Class Reference (HTML) (PDF)
Replace parameter types of "id < MenuItem>" with "MenuItem *".
 Minor Change Reference User Experience
2008-10-15 NSPopUpButtonCell Class Reference (HTML) (PDF)
Replaced parameter types of "id <NSMenuItem>" with "NSMenuItem *". Corrected description of attachPopUpWithFrame:inView: method. Included code example for setUsesItemFromMenu:.
 Minor Change Reference User Experience
2008-10-15 NSPredicateEditor Class Reference (HTML) (PDF)
Removed broken link.
Minor Change Reference Data Management, User Experience
2009-01-06 NSPrintInfo Class Reference (HTML) (PDF)
Cleaned up the deprecated print info keys.
 Minor Change Reference Printing
2009-02-04 NSSavePanel Class Reference (HTML) (PDF)
Updated documentation to use more consistent method formatting and corrected various errors.
 Minor Change Reference Events & Other Input, File Management, User Experience
2008-10-15 NSScanner Class Reference (HTML) (PDF)
Documented hexadecimal scanning methods introduced in Mac OS X v10.5
 Minor Change Reference Data Management
2009-01-06 NSScreen Class Reference (HTML) (PDF)
Updated the information regarding what constitutes the main screen.
 Minor Change Reference Graphics & Imaging
2009-04-08 NSScroller Class Reference (HTML) (PDF)
Updated for Mac OS X v10.5.
 Content Update Reference User Experience
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
2008-10-15 NSSet Class Reference (HTML) (PDF)
Corrected typographical errors.
 Minor Change Reference Data Management
2009-02-04 NSShadow Class Reference (HTML) (PDF)
Added a description for NSShadow's init method.
 Minor Change Reference Graphics & Imaging
2008-10-15 NSSocketPort Class Reference (HTML) (PDF)
Clarified the types of messaging available for NSSocketPort.
 Minor Change Reference Interapplication Communication, Networking
2008-10-15 NSSound Class Reference (HTML) (PDF)
Updated the list of supported sound formats.
 Minor Change Reference Audio, Data Management, Resource Management
2009-01-06 NSSpeechSynthesizer Class Reference (HTML) (PDF)
Clarified how the speech rate is set when using initWithVoice:.
 Minor Change Reference Accessibility, Text & Fonts, 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
2008-10-15 NSStream Class Reference (HTML) (PDF)
Revised descriptions of NSStreamStatus constants.
 Minor Change Reference Data Management, File Management, Networking
2009-02-04 NSString Application Kit Additions Reference (HTML) (PDF)
Documented NSStringDrawingTruncatesLastVisibleLine constant.
 Minor Change Reference Data Management, Text & Fonts
2009-02-04 NSString Class Reference (HTML) (PDF)
Changed the abstract of getCharacters: to more closely reflect that of getCharacters:range:.
 Minor Change Reference Data Management
2009-01-06 NSTextField Class Reference (HTML) (PDF)
Added note that background color rendering is disabled for rounded-bezel text fields.
 Minor Change Reference User Experience
2009-01-06 NSTextFieldCell Class Reference (HTML) (PDF)
Added note that background color rendering is disabled for rounded-bezel text fields. Revised description of setUpFieldEditorAttributes: because it no longer supports replacing the field editor.
Minor Change 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
2008-11-19 NSTimer Class Reference (HTML) (PDF)
Augmented parameter descriptions.
 Minor Change Reference Events & Other Input
2008-10-15 NSTokenField Class Reference (HTML) (PDF)
Made several minor corrections.
 Minor Change Reference User Experience
2008-10-15 NSToolbar Class Reference (HTML) (PDF)
Corrected description of toolbar:itemForItemIdentifier:willBeInsertedIntoToolbar: method.
 Minor Change Reference User Experience
2009-02-04 NSURL Class Reference (HTML) (PDF)
Miscellaneous edits.
 Minor Change Reference Internet & Web, Networking
2009-02-04 NSURLHandle Class Reference (HTML) (PDF)
Corrected typos.
 Minor Change Reference Internet & Web, Networking
2009-04-08 NSUserDefaults Class Reference (HTML) (PDF)
Updated property list storage details.
 Minor Change Reference Data Management, User Experience
2009-02-04 NSView Class Reference (HTML) (PDF)
Corrected typos.
 Minor Change Reference Events & Other Input, Graphics & Imaging, Printing
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
2008-11-19 Object-Oriented Programming with Objective-C (HTML) (PDF)
Corrected typographical errors.
Minor Change Guides Design Guidelines, Objective-C Language
2009-01-06 Objective-C 1 Runtime Reference (HTML) (PDF)
Added link to current document.
 Minor Change Reference Objective-C Language
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
2009-02-04 Objective-C 2.0 Runtime Programming Guide (HTML) (PDF)
Corrected typographical errors.
Minor Change Guides Objective-C Language, Runtime Architecture
2008-11-19 Objective-C 2.0 Runtime Reference (HTML) (PDF)
Added links to the new Objective-C 2.0 Runtime Programming Guide.
 Minor Change Reference Objective-C Language
2008-09-10 Observing Process Lifetimes Without Polling (HTML)
A major rewrite to eliminate use of deprecated APIs and to update the technote to reference the latest techniques.
 Minor Change Technical Notes Process Management
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
2009-05-06 Predicate Programming Guide (HTML) (PDF)
Corrected a typographical error.
 Minor Change Guides Data Management, Design Guidelines
2008-09-24 Programmatically causing restart, shutdown and/or logout (HTML) (日本語 HTML)
Updated source listing.
 Minor Change Technical Q&As Events & Other Input, Process Management, Resource Management
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
2009-04-08 QTCaptureAudioPreviewOutput Class Reference (HTML) (PDF)
Fixed parameter descriptions.
 Minor Change Reference QuickTime
2009-05-06 QTCaptureDevice Class Reference (HTML) (PDF)
Fixed enumeration and constant listings. Minor fixes.
 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
2009-03-04 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
2009-04-08 QTCaptureView Class Reference (HTML) (PDF)
Modified descriptions. Fixed typos. MInor fixes.
 Minor Change Reference QuickTime
2009-04-07 QTCoreVideo202 (HTML) (DMG) (ZIP)
Performance improvement with movie pixel buffersand streaming textures.
 Minor Change Sample Code Graphics & Imaging, QuickTime
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
2009-04-08 QTDataReference Class Reference (HTML) (PDF)
Added parameter descriptions, updated constant listings. Minor fixes.
 Minor Change Reference QuickTime
2008-10-13 QTKit Capture - Disabling specific audio channels when recording (HTML)
First Version
 First Version Technical Q&As QuickTime
2008-09-16 QTKit Capture - Video Compression Options And Preview (HTML)
First Version
 First Version Technical Q&As QuickTime
2009-03-04 QTMedia Class Reference (HTML) (PDF)
Added parameter descriptions and constant groupings.
 Minor Change Reference QuickTime
2009-01-07 QTMovie Class Reference (HTML) (PDF)
Corrected the description of QuickTime VR attribute. Minor typo fixes.
 Minor Change Reference QuickTime
2009-03-04 QTTrack Class Reference (HTML) (PDF)
Fixed constants listings; minor edits.
 Minor Change Reference QuickTime
2008-10-15 Quartz Composer Programming Guide (HTML) (PDF)
Added description of "onloading" HTML attribute in Quartz Composer WebKit plug-in.
 Minor Change Guides Graphics & Imaging
2009-01-29 QuickTime Audio - Easy Frequency Level Metering with MovieAudio APIs (HTML)
Editorial
 Minor Change Technical Q&As QuickTime
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