Not sure exactly how I did it but if I remember correctly I had to enable mouse over and click events either in my player controller or my pawn I think it was the player controller then in the widget I had a button around my text box when I clicked on the button it would set the keyboard focus to the text box then I was able to type and I think I set the text box is enabled to false by default because it was sometimes not letting me click the button the only problem I had after that is the text was a little grayed out because is enabled was false but yea hope this helps