Version: 2020.3
  • C#

How do you use documentation throughout your workflow? Share your experience with us by taking this survey.


Suggest a change


Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.


Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.




public static bool BeginFadeGroup(float value);


value A value between 0 and 1, 0 being hidden, and 1 being fully visible.


bool If the group is visible or not.


Begins a group that can be be hidden/shown and the transition will be animated.

using UnityEngine;
using UnityEditor;
using UnityEditor.AnimatedValues;

public class MyWindow : EditorWindow { AnimBool m_ShowExtraFields; string m_String; Color m_Color = Color.white; int m_Number = 0;

[MenuItem("Window/My Window")] static void Init() { MyWindow window = (MyWindow)EditorWindow.GetWindow(typeof(MyWindow)); }

void OnEnable() { m_ShowExtraFields = new AnimBool(true); m_ShowExtraFields.valueChanged.AddListener(Repaint); }

void OnGUI() { = EditorGUILayout.ToggleLeft("Show extra fields",;

//Extra block that can be toggled on and off. if (EditorGUILayout.BeginFadeGroup(m_ShowExtraFields.faded)) { EditorGUI.indentLevel++; EditorGUILayout.PrefixLabel("Color"); m_Color = EditorGUILayout.ColorField(m_Color); EditorGUILayout.PrefixLabel("Text"); m_String = EditorGUILayout.TextField(m_String); EditorGUILayout.PrefixLabel("Number"); m_Number = EditorGUILayout.IntSlider(m_Number, 0, 10); EditorGUI.indentLevel--; }

EditorGUILayout.EndFadeGroup(); } }