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Re:Show HN: DockFlow – Switch between multiple macOS Dock la... by zolotorevich on Thursday May 22, 2025 @03:31PM (#44065856)
I haven't coded for macOS for a while... well, for almost ten years :-) But as far as I remember, there's a 'NotificationCenter' which broadcasts system state changes to apps. Maybe it has a 'Desktop changed' event?

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