DPDT Switch set up correctly?

Other Hardware General Electronics
12

I checked the contents of the library..

Joystick.pressButton(x);

And

Joystick.releaseButton(x);

This is sent key to the PC instantly.
by you setting below.

const bool initAutoSendState = true;

In other words

Joystick.pressButton(x);
Joystick.releaseButton(x);

This is will be button is pressed once.

For the time being, forget once about the toggle switch...

  {
    static bool isNotPressed = true;
    if (digitalRead(8) == LOW)
    {
      if (isNotPressed)
      {
        Joystick.pressButton(4);
        Joystick.releaseButton(4);
        Joystick.pressButton(4);
        Joystick.releaseButton(4);
        isNotPressed = false;
      }
    } else {
      isNotPressed = true;
    }
  }

Please possible to check if the key sent twice with the this code?
Try replacing the "8-button" in your code with this one.
There was an extra curly brace, but I dare to leave it as it is.