How do I detect when my app loses focus (to widget screen)?

[kwackers]

Hi guys,

thanks for reading this. I'm new to mac development and have tried writing a simple game (running under Lion).
I can detect and pause my game when it loses focus by clicking on something else, but not when swiping to the widget screen (my game continues to run).

I've looked through all the application and window notifications but haven't found anything that helps (perhaps I'm looking in the wrong place?).

I guess there must be some form of notification that tells you that you've lost focus after the user moves to the widget screen but I'm at a loss as to what it may be.

Does anyone have any pointers to a solution?

Thanks, Steve.

[flamingliquid]

Just for your knowledge, the widget screen is formally known as the Dashboard, just to help you find answers in the future

I just did a quick test and

- (void)applicationDidResignActive:(NSNotification *)aNotification

is called when I swipe to the Dashboard. Is this working for you?

[kwackers]

Originally Posted by flamingliquid

Just for your knowledge, the widget screen is formally known as the Dashboard, just to help you find answers in the future

I just did a quick test and

- (void)applicationDidResignActive:(NSNotification *)aNotification

is called when I swipe to the Dashboard. Is this working for you?

Hi and thanks for taking the time to answer.
I didn't realise that was the dashboard... (What's the screen called when you do a 3 fingered wipe vertically on the trackpad and see all the windows? I don't get any notifications for that either - my game carries on inside a thumbnail...)

Anyway I tried adding that function to my code and nothing happens, I've also tried setting a notification explicitly (is just adding the function all I need?) like below:

[[NSNotificationCenter defaultCenter] addObserver:self 
                                                 selector:@selector(PauseGame) 
                                                     name:NSApplicationDidHideNotification
                                                   object:self];

I also set various other notifications in the same block of code and they all seem to work fine (i.e. NSViewGlobalFrameDidChangeNotification).
Perhaps there's something else I need to do?