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Leopard Reference Library
Cocoa is an object-oriented application environment designed for developing Mac OS X native applications. The Cocoa frameworks support rapid development and high productivity. Cocoa provides developers starting new Mac OS X projects the fastest way to full-featured implementations. Applications from other platforms can also be brought to Mac OS X quickly using Cocoa.
A guided introduction and learning path for developers new to Cocoa.   Essential information for developers using Objective-C.   Objective-C API references organized by framework.
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NSApplication Class Reference (HTML) (PDF)
Describes the responder object that manages an application's events and resources.
 Runtime Architecture Reference 2009-02-04
NSCalendar Class Reference (HTML) (PDF)
Describes a calendar.
 Data Management, Internationalization Reference 2009-02-04
NSCell Class Reference (HTML) (PDF)
Describes the interface for cell objects.
 User Experience Reference 2009-02-04
NSEvent Class Reference (HTML) (PDF)
Describes an input action such as a mouse click.
 Events & Other Input Reference 2009-02-04
NSHelpManager Class Reference (HTML) (PDF)
Describes an application-level help system.
 Events & Other Input, Resource Management, User Experience Reference 2009-02-04
NSKeyValueCoding Protocol Reference (HTML) (PDF)
Describes the interface for accessing object properties indirectly by key name or key path.
 Data Management, Design Guidelines Reference 2009-02-04
NSMenuView Class Reference (HTML) (PDF)
Describes a deprecated class replaced by the NSMenu class.
 User Experience Reference 2009-02-04
NSObject Class Reference (HTML) (PDF)
Describes the Cocoa root class.
 Design Guidelines, Objective-C Language Reference 2009-02-04
NSOpenPanel Class Reference (HTML) (PDF)
Describes the panel that a user employs to locate and open a file.
 Events & Other Input, File Management, User Experience Reference 2009-02-04
NSOutlineView Class Reference (HTML) (PDF)
Describes a row-and-column format view for displaying hierarchical data.
 User Experience Reference 2009-02-04
NSSavePanel Class Reference (HTML) (PDF)
Describes the panel that a user employs to set a file-system location and save a file.
 Events & Other Input, File Management, User Experience Reference 2009-02-04
NSShadow Class Reference (HTML) (PDF)
Describes a drop shadow for a drawing operation.
 Graphics & Imaging Reference 2009-02-04
NSString Application Kit Additions Reference (HTML) (PDF)
Describes additions for drawing strings.
 Data Management, Text & Fonts Reference 2009-02-04
NSString Class Reference (HTML) (PDF)
Describes an immutable character string.
 Data Management Reference 2009-02-04
NSURL Class Reference (HTML) (PDF)
Describes a string that uniquely identifies a resource.
 Internet & Web, Networking Reference 2009-02-04
NSURLHandle Class Reference (HTML) (PDF)
Describes a deprecated technology replaced by the NSURLDownload class.
 Internet & Web, Networking Reference 2009-02-04
NSView Class Reference (HTML) (PDF)
Describes the interface for drawing, event handling, and printing in views.
 Events & Other Input, Graphics & Imaging, Printing Reference 2009-02-04
WebBackForwardList Class Reference (HTML) (PDF)
Describes the class for tracking a list of visited pages with relation to the most recent page.
 User Experience Reference 2009-02-04
DOMHTMLDocument Additions Reference (HTML) (PDF)
Describes the API added to the DOMHTMLDocument class to facilitate communication between WebKit and the DOM API.
 User Experience Reference 2009-01-26
QTMovie Class Reference (HTML) (PDF)
Describes a QuickTime movie and movie controller.
 QuickTime Reference 2009-01-07
IBDocument Class Reference (HTML) (PDF)
Describes an Interface Builder document, which visually represents a nib file.
 Tools Reference 2009-01-06
NSBitmapImageRep Class Reference (HTML) (PDF)
Describes an object that draws an image from bitmap data.
 Graphics & Imaging Reference 2009-01-06
NSColor Class Reference (HTML) (PDF)
Describes a representation of color and opacity.
 Graphics & Imaging Reference 2009-01-06
NSCursor Class Reference (HTML) (PDF)
Describes the appearance of the user interface cursor.
 User Experience Reference 2009-01-06
NSDocument Class Reference (HTML) (PDF)
Describes the interface for managing content using Cocoa's document system.
 Design Guidelines Reference 2009-01-06
NSGlyphStorage Protocol Reference (HTML) (PDF)
Describes the interface between a glyph generator and glyph storage.
 Text & Fonts Reference 2009-01-06
NSGradient Class Reference (HTML) (PDF)
Describes a color gradient to use when drawing.
 Graphics & Imaging Reference 2009-01-06
NSImage Class Reference (HTML) (PDF)
Describes a graphical image that includes facilities for drawing and compositing.
 Graphics & Imaging Reference 2009-01-06
NSImageCell Class Reference (HTML) (PDF)
Describes an object that displays an image in a frame, usually in a control.
 User Experience Reference 2009-01-06
NSImageRep Class Reference (HTML) (PDF)
Describes the interface for managing and drawing image data.
 Graphics & Imaging Reference 2009-01-06
NSOutputStream Class Reference (HTML) (PDF)
Describes a write-only data stream.
 Data Management, File Management, Networking Reference 2009-01-06
NSPanel Class Reference (HTML) (PDF)
Describes a window for performing auxiliary functions in an application.
 Events & Other Input, Graphics & Imaging, User Experience Reference 2009-01-06
NSPrintInfo Class Reference (HTML) (PDF)
Describes the print settings used for a print job.
 Printing Reference 2009-01-06
NSScreen Class Reference (HTML) (PDF)
Describes a representation of a screen (computer monitor).
 Graphics & Imaging Reference 2009-01-06
NSSpeechSynthesizer Class Reference (HTML) (PDF)
Describes the Cocoa parser that converts text to speech.
 Accessibility, Text & Fonts, User Experience Reference 2009-01-06
NSTextField Class Reference (HTML) (PDF)
Describes a control that displays editable text.
 User Experience Reference 2009-01-06
NSTextFieldCell Class Reference (HTML) (PDF)
Describes the user interface of a text field.
 User Experience Reference 2009-01-06
Objective-C 1 Runtime Reference (HTML) (PDF)
Deprecated - Describes the data structures and functions of the Objective-C 1.0 runtime support library.
 Objective-C Language Reference 2009-01-06
SFAuthorization Class Reference (HTML) (PDF)
Describes the class used to restrict a user's access to particular features in a Mac OS X application or daemon.
 Security Reference 2009-01-06
Web Services Core Framework Reference (HTML)
Describes the client-side APIs for accessing web services.
 Internet & Web Reference 2009-01-06
NSAutoreleasePool Class Reference (HTML) (PDF)
Describes the interface to the deferred-release mechanism in Cocoa's reference-counted memory management system.
 Objective-C Language, Performance Reference 2009-01-02
NSObject Protocol Reference (HTML) (PDF)
Describes the interface used to define basic object behavior.
 Design Guidelines, Objective-C Language Reference 2008-12-22
NSLayoutManager Class Reference (HTML) (PDF)
Describes an object for controlling text layout.
 Text & Fonts Reference 2008-12-20
Application Kit Framework Reference (HTML) (PDF)
Describes the interface for all things related to an application's user interface.
 General, Objective-C Language, User Experience Reference 2008-11-19
Application Kit Functions Reference (HTML) (PDF)
Describes the functions that support the Application Kit framework.
 Objective-C Language Reference 2008-11-19
Certificate, Key, and Trust Services Reference (HTML) (PDF)
Describes services to read and evaluate certificates and to use cryptographic keys.
 Security Reference 2008-11-19
ISyncSession Class Reference (HTML) (PDF)
An ISyncSession object is used to manage a single sync operation.
 Syncing Reference 2008-11-19
Keychain Services Reference (HTML) (PDF)
Describes the Keychain Services API, used to create, find, modify, and delete keychain items.
 Security Reference 2008-11-19
NSDateFormatter Class Reference (HTML) (PDF)
Describes a date formatter.
 Data Management, Internationalization, User Experience Reference 2008-11-19
NSNumberFormatter Class Reference (HTML) (PDF)
Describes a number formatter.
 Data Management, User Experience Reference 2008-11-19
NSOperation Class Reference (HTML) (PDF)
Describes an encapsulated, single-shot task.
 Process Management Reference 2008-11-19
NSOperationQueue Class Reference (HTML) (PDF)
Describes an object that manages a set of prioritized operations.
 Process Management Reference 2008-11-19
NSTimer Class Reference (HTML) (PDF)
Describes a timer.
 Events & Other Input Reference 2008-11-19
Objective-C 2.0 Runtime Reference (HTML) (PDF)
Describes the data structures and functions of the Objective-C runtime support library.
 Objective-C Language Reference 2008-11-19
NSMutableArray Class Reference (HTML) (PDF)
Describes a mutable ordered collection.
 Data Management Reference 2008-11-17
NSHTTPCookie Class Reference (HTML) (PDF)
Describes an opaque set of data that represents state or configuration.
 Internet & Web, Networking Reference 2008-11-13
DOMDocument Additions Reference (HTML) (PDF)
Describes the API added to the DOMDocument class to facilitate communication between WebKit and the DOM API.
 User Experience Reference 2008-10-15
DOMElement Additions Reference (HTML)
Describes the API added to the DOMElement class to facilitate communication between WebKit and the DOM API.
 User Experience Reference 2008-10-15
DOMRange Additions Reference (HTML) (PDF)
Describes the API added to the DOMRange class to facilitate communication between WebKit and the DOM API.
 User Experience Reference 2008-10-15
Foundation Functions Reference (HTML) (PDF)
Describes Foundation framework functions.
 Data Management Reference 2008-10-15
IMService Class Reference (HTML) (PDF)
Describes the IMService objects that each represent one service available through iChat.
 Apple Applications Reference 2008-10-15
NSAtomicStore Class Reference (HTML) (PDF)
Describes a Core Data atomic persistent store.
 Data Management Reference 2008-10-15
NSAttributedString Class Reference (HTML) (PDF)
Describes a character string with attributes.
 Data Management, Text & Fonts Reference 2008-10-15
NSBox Class Reference (HTML) (PDF)
Describes a view that can display its border and a title.
 Graphics & Imaging, Printing, User Experience Reference 2008-10-15
NSCharacterSet Class Reference (HTML) (PDF)
Describes a set of Unicode characters used in scanning and searching operations.
 Data Management Reference 2008-10-15
NSControl Class Reference (HTML) (PDF)
Describes the interface for views that respond to user actions by sending action messages.
 User Experience Reference 2008-10-15
NSDate Class Reference (HTML) (PDF)
Describes a single point in time.
 Data Management Reference 2008-10-15
NSDateComponents Class Reference (HTML) (PDF)
Describes the components of a date.
 Data Management Reference 2008-10-15
NSDirectoryEnumerator Class Reference (HTML) (PDF)
Describes the facility for enumerating the contents of a directory.
 File Management Reference 2008-10-15
NSDocumentController Class Reference (HTML) (PDF)
Describes an object for managing documents.
 Design Guidelines Reference 2008-10-15
NSExpression Class Reference (HTML) (PDF)
Describes a predicate expression.
 Data Management Reference 2008-10-15
NSFileHandle Class Reference (HTML) (PDF)
Describes an object for accessing files or communication channels.
 File Management Reference 2008-10-15
NSFileManager Class Reference (HTML) (PDF)
Describes an object that performs file-system operations.
 File Management, Resource Management Reference 2008-10-15
NSFileWrapper Class Reference (HTML) (PDF)
Describes a representation of a file-system node.
 Data Management, File Management, Resource Management Reference 2008-10-15
NSGarbageCollector Class Reference (HTML) (PDF)
Describes the garbage collector.
 Objective-C Language Reference 2008-10-15
NSIndexPath Class Reference (HTML) (PDF)
Describes a path to a node in a tree.
 Data Management Reference 2008-10-15
NSInvocation Class Reference (HTML) (PDF)
Describes an Objective-C message for use in store-and-forward operations.
 Interapplication Communication, Objective-C Language Reference 2008-10-15
NSKeyedArchiver Class Reference (HTML) (PDF)
Describes the facility for encoding objects and scalar values identified by keys.
 Data Management Reference 2008-10-15
NSKeyedUnarchiver Class Reference (HTML) (PDF)
Describes an object that extracts the contents of an archive created by the NSKeyedArchiver class.
 Data Management Reference 2008-10-15
NSManagedObject Class Reference (HTML) (PDF)
Describes a Core Data model object.
 Data Management Reference 2008-10-15
NSManagedObjectContext Class Reference (HTML) (PDF)
Describes the class used to represent a single "object space" in a Core Data application.
 Data Management Reference 2008-10-15
NSMatrix Class Reference (HTML) (PDF)
Describes a group of cell objects that work together in various ways.
 User Experience Reference 2008-10-15
NSMethodSignature Class Reference (HTML) (PDF)
Describes the types of a method's parameters and return value.
 Objective-C Language Reference 2008-10-15
NSMutableParagraphStyle Class Reference (HTML) (PDF)
Describes a mutable paragraph style.
 Data Management, Text & Fonts Reference 2008-10-15
NSOpenGLPixelFormat Class Reference (HTML) (PDF)
Describes a pixel format for OpenGL rendering.
 Graphics & Imaging Reference 2008-10-15
NSPasteboard Class Reference (HTML) (PDF)
Describes a pasteboard.
 Interapplication Communication, User Experience Reference 2008-10-15
NSPointerFunctions Class Reference (HTML) (PDF)
Describes callout functions for managing a pointer reference held somewhere else.
 Data Management Reference 2008-10-15
NSPopUpButton Class Reference (HTML) (PDF)
Describes a control for displaying pull-down or pop-up lists of items.
 User Experience Reference 2008-10-15
NSPopUpButtonCell Class Reference (HTML) (PDF)
Describes a cell used in the display of pull-down or pop-up menus.
 User Experience Reference 2008-10-15
NSPredicateEditor Class Reference (HTML) (PDF)
Describes a graphical predicate editor.
 Data Management, User Experience Reference 2008-10-15
NSScanner Class Reference (HTML) (PDF)
Describes an object that scans values from a string.
 Data Management Reference 2008-10-15
NSSet Class Reference (HTML) (PDF)
Describes an immutable unordered collection of distinct elements.
 Data Management Reference 2008-10-15
NSSocketPort Class Reference (HTML) (PDF)
Describes a BSD socket for distributed object connections or raw messaging.
 Interapplication Communication, Networking Reference 2008-10-15
NSSound Class Reference (HTML) (PDF)
Describes an object that loads and plays audio files.
 Audio, Data Management, Resource Management Reference 2008-10-15
NSStream Class Reference (HTML) (PDF)
Describes an interface for reading and writing data.
 Data Management, File Management, Networking Reference 2008-10-15
NSTextInputClient Protocol Reference (HTML) (PDF)
Describes the interface for receiving keyboard input as properly formed text.
 Events & Other Input, Text & Fonts Reference 2008-10-15
NSTokenField Class Reference (HTML) (PDF)
Describes a text field that provides tokenized editing.
 User Experience Reference 2008-10-15
NSToolbar Class Reference (HTML) (PDF)
Describes a toolbar in a window's title bar.
 User Experience Reference 2008-10-15
WebDataSource Class Reference (HTML) (PDF)
Describes the class for encapsulating web content for display in a web frame view.
 User Experience Reference 2008-10-15
WebDocumentView Protocol Reference (HTML) (PDF)
Describes the protocol adopted by document view objects to display data of different MIME types.
 User Experience Reference 2008-10-15
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