Sets the preview state.
Original signature is '- (void)setPreviewState:(BOOL)inState'
Available in Mac OS X v10.5 and later.


- inState (Boolean)
- A state (YES or NO) that represents whether a preview is visible.

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