How to make function return string to GUI

I have a standalone function (which calls a ton of other functions) that requires user inputs and im trying to put it into a GUI. The standalone function as it is will display questions in the command window, waiting for the user to put in simple responses (numbers, y, n, 0, 1 etc.) Is there a way to have these strings display in a GUI text box, or in the GUI at all?

Thanks.

[Rik]

That depends on the exact functions that are used, but probably not, which seems an oversight by the author(s) of those functions.