IP Control

I see under Custom Controls->Toolslib Controls there is a 'IP Control'. And from what I read I thought it was suppose to validate that the ip address typed is in correct format but I don't know how it works.

I setup a control through .uir file and when I run my app and type anything it I don't understand how it's suppose to check it.

The help file is not much good.

Any suggestions?

Thanks