diff --git a/DeedyDesigner/Deedy.Activity/Helper.cs b/DeedyDesigner/Deedy.Activity/Helper.cs
index 26239ea..7df9009 100644
--- a/DeedyDesigner/Deedy.Activity/Helper.cs
+++ b/DeedyDesigner/Deedy.Activity/Helper.cs
@@ -60,7 +60,7 @@ namespace Deedy.Activity
         /// <typeparam name="T">要查找的祖先元素类型</typeparam>
         /// <param name="object">起始子元素</param>
         /// <param name="level">要查找的祖先层级(1=父级，2=祖父级等)</param>
-        /// <returns>找到的祖先元素，若未找到则返回null</returns>
+        /// <returns>找到的祖先元素，若未找到则返回「null」</returns>
         public static T? FindAncestor<T>(this DependencyObject @object, int level = 1) where T : DependencyObject
         {
             if (@object == null || level < 1) return null;
@@ -82,5 +82,27 @@ namespace Deedy.Activity
 
             return null;
         }
+        /// <summary>
+        /// 在可视化树中查找指定类型的子级元素，支持元素名称
+        /// </summary>
+        /// <typeparam name="T">要查找的子级元素类型</typeparam>
+        /// <param name="parent">起始父元素</param>
+        /// <param name="name">要查找的子级元素名称，只对「FrameworkElement」类型元素生效</param>
+        /// <returns>找到的子级元素，若未找到则返回「null」</returns>
+        public static T? FindVisualChild<T>(this DependencyObject parent, string name = "") where T : DependencyObject
+        {
+            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
+            {
+                var child = VisualTreeHelper.GetChild(parent, i);
+                if (child is T result)
+                {
+                    if (string.IsNullOrEmpty(name)) return result;
+                    else if (result is FrameworkElement element && element.Name == name) return result;
+                }
+                var descendant = child.FindVisualChild<T>(name);
+                if (descendant != null) return descendant;
+            }
+            return null;
+        }
     }
 }
diff --git a/DeedyDesigner/Deedy.Wpf/WindowHeader.cs b/DeedyDesigner/Deedy.Wpf/WindowHeader.cs
index c07b9f0..c4cbcb5 100644
--- a/DeedyDesigner/Deedy.Wpf/WindowHeader.cs
+++ b/DeedyDesigner/Deedy.Wpf/WindowHeader.cs
@@ -4,7 +4,7 @@ using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Markup;
 using System.Windows.Media;
-using System.Windows.Shell;
+using Shell = System.Windows.Shell;
 
 namespace Deedy
 {
@@ -84,7 +84,7 @@ namespace Deedy
         private Menu? MainMenu;
 
         private Window? Target;
-        private WindowChrome? Chrome;
+        private Shell.WindowChrome? Chrome;
 
         private static bool IsNeedOverrideMetadata = true;
         public WindowHeader() { }
@@ -140,10 +140,10 @@ namespace Deedy
             if (this.Background == BackgroundProperty.DefaultMetadata.DefaultValue) this.SetBinding(BackgroundProperty, new Binding() { Source = this.Target, Path = new PropertyPath(BackgroundProperty.Name) });
             if (this.BorderBrush == BorderBrushProperty.DefaultMetadata.DefaultValue) this.SetBinding(BorderBrushProperty, new Binding() { Source = this.Target, Path = new PropertyPath(BorderBrushProperty.Name) });
             //这是第【3】步
-            this.Chrome = new WindowChrome() { CaptionHeight = this.ActualHeight };
-            WindowChrome.SetWindowChrome(this.Target, this.Chrome);
-            WindowChrome.SetIsHitTestVisibleInChrome(this.Container, true);
-            WindowChrome.SetIsHitTestVisibleInChrome(this.Controller, true);
+            this.Chrome = new Shell.WindowChrome() { CaptionHeight = this.ActualHeight };
+            Shell.WindowChrome.SetWindowChrome(this.Target, this.Chrome);
+            Shell.WindowChrome.SetIsHitTestVisibleInChrome(this.Container, true);
+            Shell.WindowChrome.SetIsHitTestVisibleInChrome(this.Controller, true);
 
             if (this.Controller != null)
             {