Is there a way to have my Cocoa app get notified when the display resolution changes? (while my app is running)

The reason is that I am trying to make the window of my app always as large as the screen.
Currently I do that in the init method of my window with

        NSRect visibleFrame = [[self screen] visibleFrame];
        [self setFrame: visibleFrame display: YES];

However, when the screen resolution changes (for instance, because I've plugged in a projector), then the window is too big.

I guess I could do setFrame: every time in the draw: method of my view -- but would that be the proper way to do it?

I tried to find an answer to this question in the documentation, but failed.

Any pointers will be highly appreciated.

Best regards,
Gabriel.

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