Posted whenever a column is moved by user action in an NSTableView object.
userInfo
KeyValue@"NSOldColumn"An NSNumber object containing the integer value of the column’s original index.@"NSNewColumn"An NSNumber object containing the integer value of the column’s present index.
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)