Shamyl Zakariya wrote:
So first off, is there some built-in way to simply 'goose' the app and cause its defaults bindings to trigger?
There are any number of ways. You could send a signal with the standard C function kill(). You could send a distributed notification (see NSDistributedNotificationCenter). You could send a UDP packet, or a multicast packet. The list goes on: pipes, file- system, shared memory, apple-events, etc.
Each way of sending has a corresponding way of receiving: sigaction (), NSDistributedNotificationCenter handler, packet listener, etc.
If not, what's the best practice here? And if I were to use some sort of apple event fired from the prefpane or some other technique to let the app know its defaults have changed, how do I get the user defaults controller in the headless app to apply the updates?
If I understand the question correctly, then when the signal is received, your headless app calls -synchronize on the NSUserDefaults. This assumes you don't have any shared-access contention issues.
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