Getting notified when the current application changes in Cocoa

Question

I want to be notified when the current application will change. I looked at NSWorkspace. It will send notifications only when your own application becomes active or loses th

Answer 1

If you're targeting 10.6 or later there's a notification for this:

// NSWorkspaceDidActivateApplicationNotification
[[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self selector:@selector(foremostAppActivated:) name:NSWorkspaceDidActivateApplicationNotification object:nil];

Apple docs: http://developer.apple.com/library/mac/DOCUMENTATION/Cocoa/Reference/ApplicationKit/Classes/NSWorkspace_Class/Reference/Reference.html#//apple_ref/doc/uid/20000391-SW97