public DirectInputGenerator(EventSize size)
: base(size)
{
_record = new EVENT_RECORD();
_recordHandle = GCHandle.Alloc(_record, GCHandleType.Pinned);
_record.EventHeader.ProviderId = new Guid("3838EF9A-CB6F-4A1C-9033-84C0E8EBF5A7");
_record.EventHeader.EventDescriptor.Id = (ushort)size;
_record.UserData = EventData.AddrOfPinnedObject();
_record.UserDataLength = (ushort)Marshal.SizeOf(EventData.Target);
}