Displays the receiver and begins the modal loop using the shared NSPrintInfo object.
Original signature is '- (NSInteger)runModal'
Available in Mac OS X v10.0 and later.


NSCancelButton if the user clicks the Cancel button; otherwise, NSOKButton.

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