Cocoa in a Nutshell

Name

NSInvocation — Mac OS X 10.0

Synopsis

This class encapsulates information about an Objective-C message such as the selector and the target of the message. NSInvocations are useful for statically storing a message and are often used with timers, and for message forwarding.

@interface NSInvocation : NSObject <NSCoding>

// Convenience Constructors

+ (NSInvocation *)invocationWithMethodSignature:(NSMethodSignature *)sig;

// Accessor Methods

- (void)setSelector:(SEL)selector;

- (SEL)selector;

- (void)setTarget:(id)target;

- (id)target;

- (void)setReturnValue:(void *)retLoc;

- (void)setArgument:(void *)argumentLocation atIndex:(int)index;

// Instance Methods

- (void)getReturnValue:(void *)retLoc;

- (void)invoke;

- (void)getArgument:(void *)argumentLocation atIndex:(int)index;

- (BOOL)argumentsRetained;

- (void)invokeWithTarget:(id)target;

- (NSMethodSignature *)methodSignature;

- (void)retainArguments;

// Methods Implementing NSCoding

- (void)encodeWithCoder:(NSCoder *)aCoder;

- (id)initWithCoder:(NSCoder *)aDecoder;