概要

using UnityEditor;
using UnityEngine;

public sealed class Example : EditorWindow
{
    [MenuItem( "Tools/Open" )]
    private static void Open()
    {
        GetWindow<Example>();
    }

    private void OnGUI()
    {
        GUILayout.Button( "ボタン" );

        using ( new EditorGUI.DisabledScope( true ) )
        {
            GUILayout.Button( "ボタン" );
        }

        GUILayout.Button( "ボタン" );
    }
}