Unity - 在inspector中建立按鈕、圖片

using UnityEngine;
using UnityEditor;

[CustomEditor (typeof(customIns))]
class customIns : Editor
{
    public override void OnInspectorGUI()
    {
        DrawDefaultInspector();

        Texture txture = Resources.Load("file_name_without_extension");
        GUILayout.Label(txture);

        if (GUILayout.Button("Button"))
        {
            Debug.Log("It's alive: " + target.name);
        }
            
    }
}