Returns the number of items in a slideshow. (required)
Original signature is '- (NSUInteger)numberOfSlideshowItems'
Available in Mac OS X v 10.5 and later.

C# | Visual Basic | Visual C++ |
NSUInteger NumberOfSlideshowItems { get; }
ReadOnly Property NumberOfSlideshowItems As NSUInteger Get
property NSUInteger NumberOfSlideshowItems { NSUInteger get (); }

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