PropertyChanged使用基类的，各个类不在自己定义

AIStudio.Wpf.DiagramDesigner/Helpers/CopyHelper.cs

@@ -137,12 +137,20 @@ namespace AIStudio.Wpf.DiagramDesigner
             }
         }
 
+
+        /// <summary>
+        /// 该拷贝不完整，只适应于工具栏使用
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="s"></param>
+        /// <returns></returns>
         public static T Mapper<T>(T s) where T : SelectableViewModelBase
         {
             if (s == null)
                 return null;
 
             T d = Activator.CreateInstance(s.GetType()) as T;
+            d.IsLoaded = false;
             var properties = s.GetType().GetProperties();
             foreach (var propertie in properties)
             {
@@ -158,6 +166,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             d.FontViewModel = CopyHelper.Mapper(s.FontViewModel);
             d.ShapeViewModel = CopyHelper.Mapper(s.ShapeViewModel);
             d.LockObjectViewModel = CopyHelper.Mapper<LockObjectViewModel, ILockObjectViewModel>(s.LockObjectViewModel);
+            d.IsLoaded = true;
             return d;
         }