Function IOHIDGetParameter 

pub unsafe extern "C-unwind" fn IOHIDGetParameter(
    handle: io_connect_t,
    key: Option<&CFString>,
    max_size: IOByteCount,
    bytes: *mut c_void,
    actual_size: *mut IOByteCount,
) -> kern_return_t

👎Deprecated

Available on crate features hidsystem and libc only.

Safety

• key might not allow None.
• bytes must be a valid pointer.
• actual_size must be a valid pointer.