objective-cmacossleepnsnotifications

Is there a way to monitor when a Mac is about to go to sleep?

Is there a programmatic way to monitor when a Mac is about the to go sleep? I would like to monitor when the user deliberately tells the system to go to sleep and when the system is preparing to sleep naturally.

Solution

  • You can register for the following notification like this:

    [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self selector:@selector(receiveSleepNotification:) name:NSWorkspaceScreensDidSleepNotification object:NULL];

    You can register for a wake notification like this:

    [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self selector:@selector(receiveWakeNotification:) name:NSWorkspaceDidWakeNotification object:NULL];