Re-usable YesNo Window C# Unity

Example.cs

//Example
public YesNoWindow yesNoWindow;

public void ExitGame()
{
    if (yesNoWindow != null)
    {
        yesNoWindow.onYesClickCall += ExitGame2;
        yesNoWindow.ShowYesNo("Are you sure you wish to quit the game?");
    }
}

private void ExitGame2()
{
#if UNITY_EDITOR
    UnityEditor.EditorApplication.isPlaying = false;
#else
    Application.Quit();
#endif
}

YesNoWindow.cs

//Made by: HolyFot
//License: CC0 - https://creativecommons.org/share-your-work/public-domain/cc0/
//Easy re-usable Yes/No menu using a delegate call back.
using System;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;

public class YesNoWindow : MonoBehaviour
{
    public Text msg;
    public Button YesBtn;
    public Button NoBtn;
    public GameObject window;

    public delegate void EventYesClicked();
    public event EventYesClicked onYesClickCall;

    void Awake()
    {
        if (NoBtn != null)
            NoBtn.onClick.AddListener(delegate { HideWindow(); });
        if (YesBtn != null)
            YesBtn.onClick.AddListener(delegate { YesClick(); });

        HideWindow();
    }

    public void ShowYesNo(string message)
    {
        msg.text = message;

        window.SetActive(true);
    }

    public void YesClick()
    {
        if (onYesClickCall != null)
        {
            onYesClickCall.Invoke();
        }

        HideWindow();
    }

    public void HideWindow()
    {
        window.SetActive(false);
    }
}