Creating a GUI

I'm creating a GUI for my game. My game is fullscreen so im not goin to use MaxGUI. I'm currently stuck on how to create textfields. I know how to a get user input and display it on screen. The only problem I have is when my textfield text becomes too long, the text writes over the textfield.

Can someone give post a small example on how to create a textfield?

ever thought of using a borderless window the same size as the screen, you could then use MaxGUI...