diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index 2a3df1a9..2659e23d 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UINavBar.cs b/SunnyUI/Controls/UINavBar.cs
index 72bacf68..7c05543e 100644
--- a/SunnyUI/Controls/UINavBar.cs
+++ b/SunnyUI/Controls/UINavBar.cs
@@ -56,6 +56,12 @@ namespace Sunny.UI
             Version = UIGlobal.Version;
         }
 
+        public void ClearAll()
+        {
+            Nodes.Clear();
+            MenuHelper.Clear();
+        }
+
         protected override void OnFontChanged(EventArgs e)
         {
             base.OnFontChanged(e);
diff --git a/SunnyUI/Controls/UINavMenu.cs b/SunnyUI/Controls/UINavMenu.cs
index b14ca070..3d22aad5 100644
--- a/SunnyUI/Controls/UINavMenu.cs
+++ b/SunnyUI/Controls/UINavMenu.cs
@@ -87,6 +87,12 @@ namespace Sunny.UI
         [Description("获取或设置包含有关控件的数据的对象字符串"), Category("SunnyUI")]
         public string TagString { get; set; }
 
+        public void ClearAll()
+        {
+            Nodes.Clear();
+            MenuHelper.Clear();
+        }
+
         protected override void OnBackColorChanged(EventArgs e)
         {
             base.OnBackColorChanged(e);
diff --git a/SunnyUI/Controls/UINavMenuHelper.cs b/SunnyUI/Controls/UINavMenuHelper.cs
index 576e7ec8..9c8f4f8c 100644
--- a/SunnyUI/Controls/UINavMenuHelper.cs
+++ b/SunnyUI/Controls/UINavMenuHelper.cs
@@ -41,6 +41,11 @@ namespace Sunny.UI
             }
         }
 
+        public void Clear()
+        {
+            Items.Clear();
+        }
+
         private readonly ConcurrentDictionary<TreeNode, NavMenuItem> Items = new ConcurrentDictionary<TreeNode, NavMenuItem>();
 
         public string GetTipsText(TreeNode node)
diff --git a/SunnyUI/Static/USystem.cs b/SunnyUI/Static/USystem.cs
index e103054d..bbe9ee23 100644
--- a/SunnyUI/Static/USystem.cs
+++ b/SunnyUI/Static/USystem.cs
@@ -51,19 +51,32 @@ namespace Sunny.UI
 
         public static void EnabledTaskManager()
         {
-            DisableTaskMgrRegistryKey(true);
+            RegistryDisableTaskMgr(0);
         }
 
         public static void DisabledTaskManager()
         {
-            DisableTaskMgrRegistryKey(false);
+            RegistryDisableTaskMgr(1);
         }
 
-        private static void DisableTaskMgrRegistryKey(bool enabled)
+        public static void RegistryDisableTaskMgr(int value)
         {
             string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
             RegistryKey mKey = Registry.CurrentUser.CreateSubKey(subKey);
-            mKey?.SetValue("DisableTaskMgr", enabled ? 0 : 1);
+            mKey?.SetValue("DisableTaskMgr", value);
+            mKey?.Dispose();
+        }
+
+        public static void RegistryHooksTimeout()
+        {
+            string subKey = @"Control Panel\Desktop";
+            RegistryKey mKey = Registry.CurrentUser.CreateSubKey(subKey);
+            mKey?.SetValue("LowLevelHooksTimeout", 10000);
+            mKey?.Dispose();
+
+            subKey = @".DEFAULT\Control Panel\Desktop";
+            mKey = Registry.Users.CreateSubKey(subKey);
+            mKey?.SetValue("LowLevelHooksTimeout", 10000);
             mKey?.Dispose();
         }