End Google Ads 201810 - BS.net 01 --> I created a dll, and need support licensing.

now, i import IClassFactory2 interface,see:
http://www.pinvoke.net/default.aspx/...sFactory2.html[^]


then use it in class:
public class HelloWorld: System.Windows.Forms.Control,IClassFactory2

please, how to realize this IClassFactory2?
and should i call procedure in HelloWorld create procedure?