Visible DFrame that does not affect gameplay

How would I go about making a DFrame visible, but still allow the player to interact with the game in the background e.g. use the arrow keys, mouse etc.

Why would you ever want anything like this?

If you must know, I’m trying to make a non-intrusive in-game popup.

Disable keyboard input, but honestly I believe this is not the best way to go about it. I’d just paint something on the HUD temporarily.