How to use Elegoo 2,8 inch touchscreen

Hello,

I have recently purchased an Elegoo 2,8 inch touschscreen (Shield), but I have trouble setting it up. I had no problem with the tft part(eg drawing stuff on it), more with the touchscreen. How do I "request" the "location" of the touch?

Any Help is appricated!

Which library are you using to drive the screen ?
Does it come with any examples ?

The librarys i use are:

#include <Elegoo_GFX.h>
#include <Elegoo_TFTLCD.h>
#include "TouchScreen.h"
#include <stdint.h>

Are there examples with the libraries, in particular TouchScreen.h ? Where did you get it from ?