Returns the window corresponding to the specified window number.
Original signature is '- (NSWindow *)windowWithWindowNumber:(NSInteger)windowNum'
Available in Mac OS X v10.0 and later.


- windowNum (NSInteger)
- The unique window number associated with the desired NSWindow object.

The desired window object or nil if the window could not be found.

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