How do I create the CFErrorRef parameter required for modifying ABAddressBook via Ruby Motion

Question

I'm trying to use Ruby Motion to add an entry to the AddressBook. I can't figure out how to properly instantiate the CFErrorRef parameter.

error = nil # compiles but won't capture an error properly
# Here are my numerous attempts:
#error = Pointer.new( :object ) expected instance of Pointer of type `^{__CFError}', got `@' (TypeError)
#error = Pointer.new( '^{__CFError}' ) Can't find pointer description for type `^{__CFError}'
#error = Pointer.new( '{__CFError}' ) Can't find pointer description for type `{__CFError}'
#error = Pointer.new( '__CFError' ) Can't find pointer description for type `__CFError'
#error = Pointer.new( CFError.type ) uninitialized constant AppDelegate::CFError (NameError)
#error = Pointer.new( CFErrorRef.type ) uninitialized constant AppDelegate::CFErrorRef 
p = ABPersonCreate()
raise error[0] unless ABRecordSetValue( p, KABPersonFirstNameProperty, "Guy", error )
raise error[0] unless ABRecordSetValue( p, KABPersonLastNameProperty, "Argo", error )
ab = ABAddressBookCreate()
raise error[0] unless ABAddressBookAddRecord( ab, p, error )
raise error[0] unless ABAddressBookSave( ab, error )
NSLog( "Record successfully added." )

Suggestions welcome. Guy

Answer 1

Upgrading to RubyMotion 1.9 includes this fix:

• Fixed a bug in the compiler where APIs accepting pointers to CoreFoundation types could not be given Pointer objects of the :object type (ex. CFErrorRef*).

sudo motion update will get this for you.