pub unsafe extern "C" fn clutter_device_manager_get_core_device(
device_manager: *mut ClutterDeviceManager,
device_type: ClutterInputDeviceType,
) -> *mut ClutterInputDevice
pub unsafe extern "C" fn clutter_device_manager_get_core_device(
device_manager: *mut ClutterDeviceManager,
device_type: ClutterInputDeviceType,
) -> *mut ClutterInputDevice