Detect when a User takes a Screenshot

Question

I am looking for way for my app to receive a notification when the user takes a screenshot either with Command-Shift-3 or Command-Shift-4.

An e

Answer 1

youll have to register an object to recieve the system notification when a user takes a screen shot

so:

[[NSNotificationCenter defaultCenter] addObserver: theObjectToRecieveTheNotification selector:@selector(theMethodToPerformWhenNotificationIsRecieved) name:@"theNameOftheScreenCapturedNotification" object: optionallyAnObjectOrArgumentThatIsPassedToTheMethodToBecalled];

not sure what the notification name is but it's probably out there.

don't forget to unregister yourself as well in dealloc:

[[NSNotificationCenter defaultCenter] removeObserver:self];