* IFame：增加一个反馈的接口，Feedback，Page可将对象反馈给Frame

SunnyUI/Forms/UIFormHelper.cs

@@ -619,5 +619,7 @@ namespace Sunny.UI
         bool RemovePage(int pageIndex);
 
         bool RemovePage(Guid guid);
+
+        void Feedback(object sender, int pageIndex, params object[] objects);
     }
 }

SunnyUI/Frames/UIMainFrame.cs

@@ -144,6 +144,11 @@ namespace Sunny.UI
             return MainTabControl.RemovePage(guid);
         }
 
+        public virtual void Feedback(object sender, int pageIndex, params object[] objects)
+        {
+
+        }
+
         #endregion IFrame实现
     }
 }