Unity 编辑器显示自定义提示界面

using UnityEditor;
using UnityEngine;

public class TestNotification : EditorWindow
{
    private string notification = "This is a Notification";
    static TestNotification window;
    [MenuItem("Edit/Test")]
    static void Test()
    {
        window = (TestNotification) EditorWindow.GetWindow(typeof(TestNotification));
        window.Show();
    }

    private void OnGUI()
    {
        notification = EditorGUILayout.TextField(notification);
        if (GUILayout.Button("Show Notification"))
        {
            window.ShowNotification(new GUIContent(notification));
        }

        if (GUILayout.Button("Remove Notification"))
        {
            window.RemoveNotification();
        }
    }
}