Hi friends, can u explain how to use that control?

Thanks...  

This is most likely because the called forms are not raising their Closing event (the code to save the values to the registry is in the OnFormClosing method).  I'll check into this, but if the event is not being raised, we might not be able to fin another place to attach the code.

Hi Ben.

Yeah, I thought of that.

By the way, I looked for a BeforeClose hook, and couldn't find one. And in the case the OnClosing not being fired, would the Save before closing work and things like that work?

That is a very good point, Ivan... I believe the question to ask if you want to save your changes is being fired from within the OnFormClosing as well...