How to get the full URL or query params in user session

I am using Intraweb 16, and I can't figure out how to get the URL or query params. I am starting the user session from TWebBrowser on the client side with a specific URL and params, and I need to parse it.

All I found was this WebApplication-&tRequest-&tParams-&tValues["IW_Location_"] contains the full URL. But I thought maybe there is a simpler way to achieve this?