Returns a single value from the block.
Original signature is '- (id) objectForKey:(NSString*)key ofTrack:(NSUInteger)trackIndex'
Available in Mac OS X v10.4 and later.

C# | Visual Basic | Visual C++ |
public virtual Id ObjectForKeyOfTrack( NSString key, NSUInteger trackIndex )
Public Overridable Function ObjectForKeyOfTrack ( _ key As NSString, _ trackIndex As NSUInteger _ ) As Id
public: virtual Id^ ObjectForKeyOfTrack( NSString^ key, NSUInteger trackIndex )

- key (NSString)
- Key to get the value of.
- trackIndex (NSUInteger)
- One-based index of the track to query, or 0 to query the disc.

Autoreleased NSObject for the key, or nil if not present.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)