结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Plugins/FairyGUI/Examples/ModalWaiting/Window4.cs

@@ -0,0 +1,20 @@
+using FairyGUI;
+
+public class Window4 : Window
+{
+    public Window4()
+    {
+    }
+
+    protected override void OnInit()
+    {
+        this.contentPane = UIPackage.CreateObject("ModalWaiting", "TestWin").asCom;
+        this.contentPane.GetChild("n1").onClick.Add(OnClick);
+    }
+
+    void OnClick()
+    {
+        this.ShowModalWait();
+        Timers.inst.Add(3, 1, (object param) => { this.CloseModalWait(); });
+    }
+}