Anonymous Declarationenum : unsigned int { ... }; TopicsConstantskIOHIDKeyboardPhysicalLayoutType101kIOHIDKeyboardPhysicalLayoutType102kIOHIDKeyboardPhysicalLayoutType103kIOHIDKeyboardPhysicalLayoutType104kIOHIDKeyboardPhysicalLayoutType106kIOHIDKeyboardPhysicalLayoutTypeUnknownkIOHIDKeyboardPhysicalLayoutTypeVendor