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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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Identity Services Reference Collection (HTML) (PDF)
Describes the APIs for using identities and the Identity Picker.
 Networking Reference 2007-05-14
Automator Constants Reference (HTML) (PDF)
Describes the constants defined in the Automator framework not described in individual classes.
 Apple Applications Reference 2007-05-10
NSObject Interface Builder Kit Additions Reference (HTML) (PDF)
Describes additions, used by Interface Builder plug-ins, for inspecting objects.
 Tools Reference 2007-05-10
NSView Interface Builder Kit Additions Reference (HTML) (PDF)
Describes additions, used by Interface Builder plug-ins, for manipulating views.
 Tools Reference 2007-05-10
QCCompositionParameterView Class Reference (HTML) (PDF)
Describes the class used to edit the input parameters of a composition in a view.
 Graphics & Imaging Reference 2007-05-09
QCCompositionParameterViewDelegate Protocol Reference (HTML) (PDF)
Describes the protocol for responding to changes in a QCCompositionParameterView object.
Graphics & Imaging Reference 2007-05-09
QCCompositionPickerPanel Class Reference (HTML) (PDF)
Describes the class used to display a utility window for browsing and selecting a composition.
 Graphics & Imaging Reference 2007-05-09
QCCompositionPickerView Class Reference (HTML) (PDF)
Describes the class used to display a view for browsing and selecting a composition.
 Graphics & Imaging Reference 2007-05-09
QCCompositionPickerViewDelegate Protocol Reference (HTML) (PDF)
Describes the protocol for responding to changes in a QCCompositionPickerView object.
 Graphics & Imaging Reference 2007-05-09
QCCompositionRepository Class Reference (HTML) (PDF)
Describes the class that represents a system-wide, central repository of Quartz Composer compositions.
 Graphics & Imaging Reference 2007-05-09
QCPlugInContext Protocol Reference (HTML) (PDF)
Describes the protocol used by execution contexts.
 Graphics & Imaging Reference 2007-05-09
QCPlugInOutputImageProvider Protocol Reference (HTML) (PDF)
Describes the methods for managing image data that's produced as output from a QCPlugIn object.
 Graphics & Imaging Reference 2007-05-09
QCPlugInViewController Class Reference (HTML) (PDF)
Describes the class that provides a controller object for a user interface to edit the settings for a QCPlugIn object.
 Graphics & Imaging Reference 2007-05-09
QCRenderer Class Reference (HTML) (PDF)
Describes the class used to load, play, and control a Quartz Composer composition to an arbitrary OpenGL context.
 Graphics & Imaging Reference 2007-05-09
QCView Class Reference (HTML) (PDF)
Describes the class used to load, play, and control a Quartz Composer composition to a custom NSView object.
 Graphics & Imaging Reference 2007-05-09
NSViewController Class Reference (HTML) (PDF)
Describes the manager of a view, usually a view stored in a nib file.
 Graphics & Imaging, User Experience Reference 2007-05-02
QTMovieView Class Reference (HTML) (PDF)
Describes a view for playing a QuickTime movie.
 QuickTime Reference 2007-05-01
NSComparisonPredicate Class Reference (HTML) (PDF)
Describes the class used to define a predicate used to compare the results of two expressions.
 Data Management Reference 2007-04-30
NSDecimalNumberHandler Class Reference (HTML) (PDF)
Describes an object that specifies decimal number rounding and error handling.
 Data Management Reference 2007-04-30
NSMachPort Class Reference (HTML) (PDF)
Describes a port object that wraps a Mac OS X local communication port.
 Interapplication Communication Reference 2007-04-30
NSRecursiveLock Class Reference (HTML) (PDF)
Describes a lock that can be acquired multiple times by one thread without causing a deadlock.
 Process Management Reference 2007-04-30
NSColorPickingDefault Protocol Reference (HTML) (PDF)
Describes the interface for receiving basic color-picker user-interface requests.
 Graphics & Imaging, User Experience Reference 2007-04-27
NSSpellChecker Class Reference (HTML) (PDF)
Describes the interface to the Cocoa spell-checking service.
 Text & Fonts Reference 2007-04-27
NSSpellServer Class Reference (HTML) (PDF)
Describes an application-defined spell-checking service.
 Text & Fonts Reference 2007-04-27
NSTextView Class Reference (HTML) (PDF)
Describes a view that displays editable text.
 Text & Fonts Reference 2007-04-27
NSWorkspace Class Reference (HTML) (PDF)
Describes an object that provides Finder services to an application.
 Interapplication Communication Reference 2007-04-27
NSAlert Class Reference (HTML) (PDF)
Describes a window that displays a message and obtains the user's response to it.
 Events & Other Input, Graphics & Imaging, User Experience Reference 2007-04-25
QLPreviewRequest Reference (HTML) (PDF)
Describes an opaque type for handling requests for Quick Look document previews.
 User Experience Reference 2007-04-20
Interface Builder Kit Framework Reference (HTML) (PDF)
Describes the interface for implementing Interface Builder plug-ins.
 Tools Reference 2007-04-18
Quick Look Framework Reference (HTML) (PDF)
Describes the interface for creating plug-ins that generate Quick Look previews and thumbnails.
 User Experience Reference 2007-04-13
NSInvocationOperation Class Reference (HTML) (PDF)
Describes a nonconcurrent operation for executing a single encapsulated task.
 Interapplication Communication, Objective-C Language Reference 2007-04-12
NSPageLayout Class Reference (HTML) (PDF)
Describes a printing dialog for querying the user about page layout.
 Printing Reference 2007-04-11
NSPathCell Class Reference (HTML) (PDF)
Describes the user interface of a path control object.
 User Experience Reference 2007-04-11
NSPathCellDelegate Protocol Reference (HTML) (PDF)
Describes the interface used to customize a pop-up-style control that represents a path.
 User Experience Reference 2007-04-11
NSPathComponentCell Class Reference (HTML) (PDF)
Describes a component of a path control.
 User Experience Reference 2007-04-11
NSPathControl Class Reference (HTML) (PDF)
Describes a control representing a file path or virtual path.
 User Experience Reference 2007-04-11
NSPathControlDelegate Protocol Reference (HTML) (PDF)
Describes the interface used to support dragging and pop-up menu customization in path controls.
 User Experience Reference 2007-04-11
NSTextTable Class Reference (HTML) (PDF)
Describes a block of text that represents a table.
 Text & Fonts Reference 2007-04-11
NSToolbarItemGroup Class Reference (HTML) (PDF)
Describes a group of items in a window's toolbar.
 User Experience Reference 2007-04-11
NSAppleEventDescriptor Class Reference (HTML) (PDF)
Describes the class used to access the basic data structures in an Apple event.
 Scripting & Automation Reference 2007-04-10
NSKeyValueBindingCreation Protocol Reference (HTML) (PDF)
Describes the interface for managing Cocoa bindings.
 Data Management Reference 2007-04-10
NSScriptCommandDescription Class Reference (HTML) (PDF)
Describes the class used to provide a description of a script command.
 Scripting & Automation Reference 2007-04-10
NSScriptSuiteRegistry Class Reference (HTML) (PDF)
Describes the class used as the top-level repository of scriptability information for an application at runtime.
 Scripting & Automation Reference 2007-04-10
NSTableDataSource Protocol Reference (HTML) (PDF)
Describes the interface for receiving table view data requests.
 User Experience Reference 2007-04-10
NSTreeController Class Reference (HTML) (PDF)
Describes the class that is used with Cocoa bindings to manage a tree of objects.
 Data Management, Design Guidelines Reference 2007-04-10
NSArrayController Class Reference (HTML) (PDF)
Describes a Cocoa bindings-compatible manager of an array or set.
 Data Management, Design Guidelines Reference 2007-04-09
NSFontManager Class Reference (HTML) (PDF)
Describes an object for controlling font conversion.
 Text & Fonts Reference 2007-04-06
NSFontPanel Class Reference (HTML) (PDF)
Describes the panel for font selection.
 User Experience Reference 2007-04-06
NSFontPanelValidation Protocol Reference (HTML) (PDF)
Describes the interface for validating fonts.
 User Experience Reference 2007-04-06
NSProxy Class Reference (HTML) (PDF)
Describes the interface for object surrogates used in distributed messages and lazy instantiation.
Interapplication Communication, Objective-C Language Reference 2007-04-06
NSBrowser Class Reference (HTML) (PDF)
Describes a control for manipulating one- or two-dimensional data sets.
 Events & Other Input, User Experience Reference 2007-04-05
NSInputStream Class Reference (HTML) (PDF)
Describes a read-only data stream.
 Data Management, File Management, Networking Reference 2007-04-05
NSSpeechRecognizer Class Reference (HTML) (PDF)
Describes the Cocoa command-and-control voice recognition system.
 Accessibility, Events & Other Input, User Experience Reference 2007-04-03
IBPlugin Class Reference (HTML) (PDF)
Describes the interface for managing plug-ins in Interface Builder.
 Tools Reference 2007-04-02
Interface Builder Kit Constants Reference (HTML) (PDF)
Describes the constants declared in the Interface Builder Kit framework.
 Tools Reference 2007-04-02
Interface Builder Kit Data Types Reference (HTML) (PDF)
Describes the data types declared in the Interface Builder Kit framework.
 Tools Reference 2007-04-02
NSController Class Reference (HTML) (PDF)
Describes the interface for controllers used with Cocoa bindings.
 Data Management, Design Guidelines Reference 2007-04-02
NSInputServerMouseTracker Protocol Reference (HTML) (PDF)
Describes the protocol implemented by text input servers to handle mouse events.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-02
NSInputServiceProvider Protocol Reference (HTML) (PDF)
Describes the protocol implemented by text input servers to handle application and text field events.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-02
NSMetadataQuery Class Reference (HTML) (PDF)
Describes a Spotlight query for file metadata.
 File Management Reference 2007-04-02
NSMetadataQueryAttributeValueTuple Class Reference (HTML) (PDF)
Describes metadata query results.
 File Management Reference 2007-04-02
NSMetadataQueryResultGroup Class Reference (HTML) (PDF)
Describes a group of metadata query result objects.
 File Management Reference 2007-04-02
NSMovieView Class Reference (HTML) (PDF)
Deprecated - Describes a deprecated class replaced by QTKit.
 QuickTime Reference 2007-04-02
NSNotification Class Reference (HTML) (PDF)
Describes information to be broadcast to other objects through a notification center.
 Events & Other Input, Interapplication Communication Reference 2007-04-02
NSNotificationQueue Class Reference (HTML) (PDF)
Describes an object that asynchronously broadcasts notifications.
 Events & Other Input Reference 2007-04-02
NSBrowserCell Class Reference (HTML) (PDF)
Describes a cell that displays data in a browser.
 User Experience Reference 2007-04-01
NSButton Class Reference (HTML) (PDF)
Describes a control that responds to clicks.
 Events & Other Input, User Experience Reference 2007-04-01
NSColorPickingCustom Protocol Reference (HTML) (PDF)
Describes the interface for receiving custom color-picker user-interface requests.
 Graphics & Imaging, User Experience Reference 2007-04-01
NSDistributedNotificationCenter Class Reference (HTML) (PDF)
Describes an object that synchronously broadcasts notifications to other tasks.
 Events & Other Input, Interapplication Communication Reference 2007-04-01
NSIndexSpecifier Class Reference (HTML) (PDF)
Describes the position of an object in a collection.
 Scripting & Automation Reference 2007-04-01
NSInputManager Class Reference (HTML) (PDF)
Describes the class used by text views to communicate with the text input management system.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-01
NSInputServer Class Reference (HTML) (PDF)
Describes the class that interprets text view events and communicates them to the text input management system.
 Events & Other Input, Text & Fonts, User Experience Reference 2007-04-01
NSURLConnection Class Reference (HTML) (PDF)
Describes the class that provides support for retrieving data from a server in response to a URL load request.
 Internet & Web, Networking Reference 2007-04-01
NSURLProtocol Class Reference (HTML) (PDF)
Describes the interface for protocol-specific loading of URL data.
 Internet & Web, Networking Reference 2007-04-01
NSURLRequest Class Reference (HTML) (PDF)
Describes a request for a resource identified by a URL.
 Internet & Web, Networking Reference 2007-04-01
NSMovie Class Reference (HTML) (PDF)
Deprecated - Describes a deprecated class replaced by QTKit.
 QuickTime Reference 2007-03-26
NSMutableData Class Reference (HTML) (PDF)
Describes a mutable byte buffer.
 Data Management Reference 2007-03-26
NSProcessInfo Class Reference (HTML) (PDF)
Describes the current process.
 Interapplication Communication, Process Management, Resource Management Reference 2007-03-26
NSTypesetter Class Reference (HTML) (PDF)
Describes the interface for typesetter objects that perform text line layout.
 Text & Fonts Reference 2007-03-26
NSHost Class Reference (HTML) (PDF)
Describes a representation of a network host.
 Networking, Process Management Reference 2007-03-24
NSIndexSet Class Reference (HTML) (PDF)
Describes an immutable collection of unique unsigned integers.
 Data Management Reference 2007-03-24
CIContext Class Reference (HTML) (PDF)
Describes the class that provides an evaluation context for rendering a Core Image image through Quartz 2D or OpenGL.
 Graphics & Imaging Reference 2007-03-16
NSPrintPanelAccessorizing Protocol Reference (HTML) (PDF)
Describes the interface for configuring accessory panes for the print panel.
 Printing, User Experience Reference 2007-03-09
NSTrackingArea Class Reference (HTML) (PDF)
Describes a view region used for mouse tracking and cursor updating.
 Events & Other Input Reference 2007-03-09
NSMenuItemCell Class Reference (HTML) (PDF)
Describes a deprecated class replaced by the NSMenuItem class.
 User Experience Reference 2007-03-07
NSMutableString Class Reference (HTML) (PDF)
Describes a mutable character string.
 Data Management Reference 2007-03-06
NSResponder Class Reference (HTML) (PDF)
Describes the interface for handling events.
 Events & Other Input Reference 2007-03-05
NSStatusBar Class Reference (HTML) (PDF)
Describes the collection of status items in the menu bar.
 User Experience Reference 2007-03-05
NSStatusItem Class Reference (HTML) (PDF)
Describes a status item in the menu bar.
 User Experience Reference 2007-03-05
NSTokenFieldCell Class Reference (HTML) (PDF)
Describes a cell used in the conversion of entered text into tokens representing objects.
 User Experience Reference 2007-03-05
NSBezierPath Class Reference (HTML) (PDF)
Describes a vector-based path consisting of line and curve segments.
 Graphics & Imaging Reference 2007-03-02
NSMenuValidation Protocol Reference (HTML) (PDF)
Describes the interface for enabling and disabling menu items.
 User Experience Reference 2007-03-02
NSPrintOperation Class Reference (HTML) (PDF)
Describes a print job.
 Printing Reference 2007-03-02
AMAction Class Reference (HTML) (PDF)
Describes the abstract class that defines the interface and general characteristics of Automator actions.
 Apple Applications Reference 2007-03-01
NSDraggingDestination Protocol Reference (HTML) (PDF)
Describes the interface for objects receiving dragged images.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSDraggingInfo Protocol Reference (HTML) (PDF)
Describes the interface for supplying useful information to a dragging destination.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSDraggingSource Protocol Reference (HTML) (PDF)
Describes the interface for receiving messages when providing a dragged image.
 Events & Other Input, Interapplication Communication Reference 2007-03-01
NSGlyphInfo Class Reference (HTML) (PDF)
Describes a glyph attribute value in an attributed string.
 Text & Fonts Reference 2007-03-01
NSGraphicsContext Class Reference (HTML) (PDF)
Describes a destination for drawing operations.
 Graphics & Imaging Reference 2007-03-01
NSLevelIndicator Class Reference (HTML) (PDF)
Describes a control for displaying a rank or amount along a linear scale.
 User Experience Reference 2007-03-01
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