Question Changing quality in-game C#

Hi i'm making a 3d main menu for my game, with 3d text, camera rotation etc. and i dunno how to change graphics, resolution and fullscreen. Now it's only changing game object on click.

Graphics

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Graphics : MonoBehaviour
6. {
7.     public GameObject Ultra;
8.     public GameObject VeryHigh;
9.     public GameObject High;
10.     public GameObject Medium;
11.     public GameObject Low;
12.     public GameObject VeryLow;
13.  
14.     // Start is called before the first frame update
15.     void Start()
16.     {
17.         Ultra.SetActive(true);
18.     }
19.  
20.     // Update is called once per frame
21.     void Update()
22.     {
23.         if (Ultra.GetComponent<Ultra>().Ultrabool == true)
24.         {
25.             Ultra.SetActive(false);
26.             VeryLow.SetActive(true);
27.         }
28.         if (VeryHigh.GetComponent<VeryHigh>().VeryHighbool == true)
29.         {
30.             VeryHigh.SetActive(false);
31.             Ultra.SetActive(true);
32.         }
33.         if (High.GetComponent<High>().Highbool == true)
34.         {
35.             High.SetActive(false);
36.             VeryHigh.SetActive(true);
37.         }
38.         if (Medium.GetComponent<Medium>().Mediumbool == true)
39.         {
40.             Medium.SetActive(false);
41.             High.SetActive(true);
42.         }
43.         if (Low.GetComponent<Low>().Lowbool == true)
44.         {
45.             Low.SetActive(false);
46.             Medium.SetActive(true);
47.         }
48.         if (VeryLow.GetComponent<VeryLow>().VeryLowbool == true)
49.         {
50.             VeryLow.SetActive(false);
51.             Low.SetActive(true);
52.         }
53.     }
54. }
55.  

Resolution

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Resolution : MonoBehaviour
6. {
7.     public GameObject HighRes;
8.     public GameObject MidRes;
9.     public GameObject LowRes;
10.  
11.     // Start is called before the first frame update
12.     void Start()
13.     {
14.         HighRes.SetActive(true);
15.     }
16.  
17.     // Update is called once per frame
18.     void Update()
19.     {
20.         if (HighRes.GetComponent<HighRes>().HighResbool == true)
21.         {
22.             HighRes.SetActive(false);
23.             LowRes.SetActive(true);
24.         }
25.         if (MidRes.GetComponent<MidRes>().MidResbool == true)
26.         {
27.             MidRes.SetActive(false);
28.             HighRes.SetActive(true);
29.         }
30.         if (LowRes.GetComponent<LowRes>().LowResbool == true)
31.         {
32.             LowRes.SetActive(false);
33.             MidRes.SetActive(true);
34.         }
35.     }
36. }
37.  

fullscreen

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Fullscreen : MonoBehaviour
6. {
7.     public GameObject Yes;
8.     public GameObject No;
9.  
10.     // Start is called before the first frame update
11.     void Start()
12.     {
13.         Yes.SetActive(true);
14.     }
15.  
16.     // Update is called once per frame
17.     void Update()
18.     {
19.         if (Yes.GetComponent<yes>().yesbool == true)
20.         {
21.             Yes.SetActive(false);
22.             No.SetActive(true);
23.         }
24.         if (No.GetComponent<no>().nobool == true)
25.         {
26.             No.SetActive(false);
27.             Yes.SetActive(true);
28.         }
29.     }
30. }

 

Screen.SetResolution can change resolution and fullscreen-ness.

QualitySettings.SetQualityLevel can change quality.

 

thanks works perfectly