Make a textbox using C++

I’m trying to make a textbox that looks as such (using just C++):

The way I’ve structured my class (ComponentDescription) is that I’ve got a file with the Name and Description of a component. (These strings/details are loaded into the class from said file when it’s instantiated) Upon collision with a particle emitted by the player, an instance of this class should appear on the HUD/UMG - i.e. a pop up message.

Could someone please answer this, or perhaps point me in the right direction? I’ve had a look at UTextBlock and it seems to be what I want, but I have no idea how I go about doing it…