static CommandMenu()
 {
     toggle = PlayerPrefs.GetInt(KEY) == 1;
     if (toggle)
     {
         efInfo.lockEffect = true;
         if (handle == null)
         {
             handle = new PreviewEffectHandle();
         }
         SceneView.onSceneGUIDelegate -= DrawSceneView;
         SceneView.onSceneGUIDelegate += DrawSceneView;
     }
 }
 static void PreviewEffect()
 {
     toggle = !toggle;
     PlayerPrefs.SetInt(KEY, toggle ? 1 : 0);
     PlayerPrefs.Save();
     if (toggle)
     {
         if (handle == null)
         {
             handle = new PreviewEffectHandle();
         }
         SceneView.onSceneGUIDelegate -= DrawSceneView;
         SceneView.onSceneGUIDelegate += DrawSceneView;
     }
     else
     {
         SceneView.onSceneGUIDelegate -= DrawSceneView;
     }
 }