TFT LCD COUNTER FOR ARDUİNO DUE

Projects Programming
1

Hi arduino due I have designed the counter on the tft screen but I want to make a button controlled counter but I can not find the necessary codes I use ILI9481 Mcu. I need help for button controlled.Thanks everyone

#include <UTFT.h>
extern uint8_t BigFont[];
extern uint8_t SevenSegNumFont[];
UTFT myGLCD(ILI9481, 38, 39, 40, 41);
char printout[4];
int counter = 0;
const int but = 6;

void setup()
{
  randomSeed(analogRead(0));

  
  myGLCD.InitLCD();
  myGLCD.setFont(BigFont);
  pinMode(but, INPUT);
  myGLCD.setBackColor(0, 255, 255);
  myGLCD.setFont(SevenSegNumFont);
  myGLCD.print("saniye", CENTER , 120);
}
void loop() {
  counter = millis();
  String elapsedTime = String(counter / 1000);
  elapsedTime.toCharArray(printout, 4);

  myGLCD.clrScr();
  myGLCD.setColor(255, 255, 255);
  myGLCD.print(printout, CENTER, 120);
  delay(1000);
  myGLCD.setColor(0, 0, 0);
  myGLCD.print(printout, CENTER, 120);




}
2 
  counter = millis();

The current time is NOT a counter.

  elapsedTime.toCharArray(printout, 4);

When counter exceeds 999000, after about 16 minutes of running, this function will NOT transfer all the characters in the String to the array.

but I want to make a button controlled counter

Is the button supposed to be drawn on the screen? How, EXACTLY, is it supposed to "control" the counter? What, EXACTLY, are you counting?

3

My LCD screen is not touchable, so I want to connect an external button.
Counter = millis ();
String elapsedTime = String (counter / 1000);
ElapsedTime.toCharArray (printout, 4);
When I count the number 0-999 through 999, I reset it again. I do not have any problems in the program.