SBApplicationDelegate Protocol Reference

Available in OS X v10.6 and later.
Declared in


This informal protocol defines a delegation method for handling Apple event errors that are sent from an target application to an SBApplication object.

You must set a delegate for the SBApplication object using the setDelegate: method. If you do not set a delegate and have the delegate handle the error in some way, SBApplication raises an exception.


Handling Errors

Instance Methods


Sent by an SBApplication object when a target application returns an error Apple event. (required)

- (id)eventDidFail:(const AppleEvent *)event withError:(NSError *)error

A pointer to the Apple event sent to the target application causing the error.


An object containing information about the error Apple event. Specific information may be included in the useInfo dictionary of the error object. See “User Info Dictionary Keys” for a list of possible keys for this dictionary.

Return Value

If you return a result, it will become the result of the sendEvent: that failed. Can be nil.

  • Available in OS X v10.5 and later.
  • Available as part of an informal protocol prior to OS X v10.6.
Declared In


User Info Dictionary Keys

The following describes the possible keys for the userInfo dictionary of the NSError object passed to the delegate. Note that for some errors, the userInfo dictionary may not have any of these keys.


A short human-readable description of the error, as an NSString object.


The type of data the target application expected, as an NSAppleEventDescriptor object.


The object that caused the error.


A full human-readable description of the error, as an NSString object.


The Apple event error number, as an NSNumber object.

Declared In