自定义窗口中使用右键菜单：

// This example shows how to create a context menu inside a custom EditorWindow.class MyGenericMenu extends EditorWindow {        @MenuItem("Game/Open Window")    static function Init () {        var window = GetWindow (MyGenericMenu);        window.position = Rect (50, 50, 250, 60);        window.Show ();    }    function Callback (obj:Object) {        Debug.Log ("Selected: " + obj);    }    function OnGUI() {        var evt : Event = Event.current;        var contextRect : Rect = new Rect (10, 10, 100, 100);                if (evt.type == EventType.ContextClick)        {            var mousePos : Vector2 = evt.mousePosition;            if (contextRect.Contains (mousePos))            {                // Now create the menu, add items and show it                var menu : GenericMenu = new GenericMenu ();                                menu.AddItem (new GUIContent ("MenuItem1"), false, Callback, "item 1");                menu.AddItem (new GUIContent ("MenuItem2"), false, Callback, "item 2");                menu.AddSeparator ("");                menu.AddItem (new GUIContent ("SubMenu/MenuItem3"), false, Callback, "item 3");                                menu.ShowAsContext ();                evt.Use();            }        }    }}