How to identify the first desktop (space)?

UI Frameworks AppKit
imneo OP
Created Jan ’17
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My app observes NSWorkspaceActiveSpaceDidChangeNotification and set wallpaper on the active screen. But I see there is no way to distinguish between spaces on a screen. I'm not sure if I have read the docs thoroughly. I would like to know if it is possible to tell which space is active for the active screen.

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parker9 OP
May ’22

There doesn't appear to be any public API to do this. Searching GitHub, there are some codes that do this, but they are using non-public API (e.g. using CGSCopyManagedDisplaySpaces)

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How to identify the first desktop (space)?
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