Creating an input field

[Zonsa]

Hey,
i want to make at the end of my game to let the player input his name to save it to the Leaderboard ... Dont really know how to let the player input only Letters and numbers, do i need to make an Array with all chars that are allowed? and how do i get the button the "player" has pressed? 
hope you can help me

[G.]

Get the character typed with the TextEntered event.
To get only letters and number check the unicode value or use std::isalnum I think