objective c - Is there a way in Cocoa to know if a NSTextField is dirty ? If it has been edited? -


is there way in cocoa know if nstextfield dirty ? if has been edited ?

i know there delegate method: 

- (void)textdidchange:(nsnotification *)notification;

but know after editing, when i'm closing window if nstextfield has been edited.

in delegate method - textdidbeginediting or textdidchange can set bool variable, , later can check value of bool variable.


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