How to keep consistent text regardless of window size?

I’m trying to create a widget that will display text at the system default for the chosen font size regardless of the size of the window or device it’s being displayed on.

At the moment when I scale my game’s window the text shrinks with the widget/window. What I want is for the text to remain a consistent size regardless of the window scale, and to just wrap around.

Any suggestions? Here are screenies of what I’m getting at the moment: