这是转自另一篇文章 EditorWindow Custom Context Menu

Unity中的窗口都可以通过右键窗口的tab 或者 点击窗口右上角的一个菜单按钮 来显示窗口菜单项

右键窗口tab

窗口右上角菜单按钮

窗口都有默认的菜单项。。可以通过实现 IHasCustomMenu 接口中的 AddItemsToMenu 函数 来添加自定义的菜单项

代码：

using UnityEditor;
using UnityEngine;

public class CustomMenuEditorWindow : EditorWindow, IHasCustomMenu
{
    [MenuItem("Window/Custom Menu Window")]
    public static void OpenCustomMenuWindow()
    {
        EditorWindow window = EditorWindow.GetWindow<CustomMenuEditorWindow>();
    }

    private GUIContent m_MenuItem1 = new GUIContent("Menu Item 1");
    private GUIContent m_MenuItem2 = new GUIContent("Menu Item 2");

    private bool m_Item2On = false;


    void Awake()
    {
        titleContent = new GUIContent("Custom Menu");
    }

    //Implement IHasCustomMenu.AddItemsToMenu
    public void AddItemsToMenu(GenericMenu menu)
    {
        menu.AddItem(m_MenuItem1, false, MenuItem1Selected);
        menu.AddItem(m_MenuItem2, m_Item2On, MenuItem2Selected);

        //NOTE: do not show the menu after adding items,
        //      Unity will do that after adding the default
        //      items: maximize, close tab, add tab >
    }

    private void MenuItem1Selected()
    {
        Debug.Log("Menu Item 1 selected");
    }

    private void MenuItem2Selected()
    {
        m_Item2On = !m_Item2On;

        Debug.Log("Menu Item 2 is " + m_Item2On);
    }
}