Posted whenever a portion of a nonretained NSWindow object is exposed, whether by being ordered in front of other windows or by other windows being removed from in front of it.
The notification object is the NSWindow object that has been exposed. The userInfo dictionary contains the following information:
KeyValue@"NSExposedRect"The rectangle that has been exposed (an NSValue object containing an NSRect).
Available in Mac OS X v10.0 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)