在Cocoa中获取桌面背景

import Cocoa

func getDesktopBackground() -> NSImage? {
    let workspace = NSWorkspace.shared
    let options: [NSWorkspace.DesktopImageOptionKey: Any] = [
        .imageScaling: NSImageScaling.scaleProportionallyUpOrDown,
        .allowClipping: true,
        .screen: NSScreen.main ?? nil
    ]
    return workspace.desktopImage(for: options)
}