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Apple Developer Docs

Kernel / Anonymous / kHIDUsage_Button_201

kHIDUsage_Button_201

Declaration

kHIDUsage_Button_201 = 0xc9

Open on developer.apple.com

KernelEnumeration Case

macOS 10.15+

Built on 2026-11-01 · Snapshot snapshot-20261101 (macOS 27.0.1) · Commit 864a336 · by @g-cqd · based on Apple Developer Documentation