Sorry, I found the property 'IsRestricted' to prevent the dragging off screen.
But the behaviour is different from what is done in your demo. Some tips on how to replicate this?
Yes, the url of demo is
I see the code, it doesn't use IsRestricted and RestrictedAreaMargin
property, but still keep not whole radwindow header out of browser,so user can drag it back.
How to do it whithout using propertys about restricted?