SceneNode增加GetEventDispatcher接口

inc/hgl/WorkObject.h

@@ -6,7 +6,6 @@
 #include<hgl/graph/mtl/MaterialLibrary.h>
 #include<hgl/graph/Renderer.h>
 #include<hgl/graph/Scene.h>
-#include<hgl/io/event/WindowEvent.h>
 #include<hgl/Time.h>
 //#include<iostream>
 
@@ -22,7 +21,7 @@ namespace hgl
     * 
     * WorkObject被定义为工作对象，所有的渲染控制都需要被写在WorkObject的Render函数下。
     */
-    class WorkObject:public TickObject,public io::WindowEvent
+    class WorkObject:public TickObject
     {
         graph::RenderFramework *render_framework=nullptr;