diff --git a/.gitignore b/.gitignore
index dfcfd56..6b44058 100644
--- a/.gitignore
+++ b/.gitignore
@@ -348,3 +348,5 @@ MigrationBackup/
 
 # Ionide (cross platform F# VS Code tools) working folder
 .ionide/
+/AutoIME安装使用说明.pdf
+/AutoIME.zip
diff --git a/AutoIME/AutoIME/Program.cs b/AutoIME/AutoIME/Program.cs
index e250f32..4d0554d 100644
--- a/AutoIME/AutoIME/Program.cs
+++ b/AutoIME/AutoIME/Program.cs
@@ -1,6 +1,9 @@
-using Autodesk.AutoCAD.EditorInput;
+using Autodesk.AutoCAD.DatabaseServices;
+using Autodesk.AutoCAD.EditorInput;
 using Autodesk.AutoCAD.Runtime;
 using System;
+using System.Runtime.InteropServices;
+using System.Text;
 using System.Windows.Forms;
 using AcadApplication = Autodesk.AutoCAD.ApplicationServices.Application;
 
@@ -9,8 +12,33 @@ namespace AutoIME
 {
     public class Program : IExtensionApplication
     {
+        //delegate void WinEventDelegate(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime);
+
+        //[DllImport("user32.dll")]
+        //static extern IntPtr SetWinEventHook(uint eventMin, uint eventMax, IntPtr hmodWinEventProc, WinEventDelegate lpfnWinEventProc, uint idProcess, uint idThread, uint dwFlags);
+
+        //private const uint WINEVENT_OUTOFCONTEXT = 0;
+        //private const uint EVENT_SYSTEM_FOREGROUND = 3;
+        //[DllImport("user32.dll")]
+        //static extern IntPtr GetForegroundWindow();
+
+        //[DllImport("user32.dll")]
+        //static extern IntPtr GetActiveWindow();
+
+        //[DllImport("user32.dll")]
+        //static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
+
+        //[DllImport("user32.dll", SetLastError = true)]
+        //static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
+
+        //[DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
+        //public static extern IntPtr GetParent(IntPtr hWnd);
+
+        //static WinEventDelegate dele = null;
+
+
         public const string AppName = "AutoIME";
-        public static readonly Editor Editor = AcadApplication.DocumentManager.MdiActiveDocument.Editor;
+        public static Editor Editor => AcadApplication.DocumentManager.MdiActiveDocument.Editor;
         private readonly Config _config = Config.GetConfigInstance();
 
         [CommandMethod("iAutoIME")]
@@ -31,7 +59,7 @@ public static void Uninstall()
         {
             Editor.WriteMessage("================<<卸载开始>>================\n");
             UnregisterApp();
-            // unbind command
+            Setup.UnbindCommandToDoc(AcadApplication.DocumentManager.MdiActiveDocument);
             Editor.WriteMessage("================<<卸载完成>>================\n");
         }
 
@@ -66,6 +94,12 @@ public static void UnregisterApp()
             Editor.WriteMessage("================<<注销成功>>================\n");
         }
 
+        internal static void TearDown()
+        {
+            Config.GetConfigInstance().Switch2DefaultIME();
+            //dele = null;
+        }
+
         [CommandMethod("SetIME")]
         public static void SetIME()
         {
@@ -92,16 +126,51 @@ public static void SetIME()
 
         public void Initialize()
         {
+            //dele = new WinEventDelegate(WinEventProc);
+            //IntPtr m_hhook = SetWinEventHook(EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_FOREGROUND, IntPtr.Zero, dele, 0, 0, WINEVENT_OUTOFCONTEXT);
             _config.Initialize();
             _config.Switch2CommandIME();
             Setup.InitialBinding();
+            AppDomain currentDomain = AppDomain.CurrentDomain;
+            currentDomain.UnhandledException += CurrentDomain_UnhandledException;
+            
+
             Editor.WriteMessage("================<<AutoIME 初始化完成>>================\n");
+        }
 
+        private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs args)
+        {
+            System.Exception e = (System.Exception)args.ExceptionObject;
+            System.IO.File.AppendAllText(@"autoimeerror.txt", e.Message);
+            System.IO.File.AppendAllText(@"autoimeerror.txt", e.StackTrace);
+            System.IO.File.AppendAllText(@"autoimeerror.txt", "\n");
         }
 
+        //private string GetActiveWindowTitle()
+        //{
+        //    const int nChars = 256;
+        //    IntPtr handle = IntPtr.Zero;
+        //    StringBuilder Buff = new StringBuilder(nChars);
+        //    handle = GetForegroundWindow();
+        //    if (GetWindowText(handle, Buff, nChars) > 0)
+        //    {
+        //        return Buff.ToString();
+        //    }
+        //    return null;
+        //}
+
+        //private void WinEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
+        //{
+        //    var threadID = GetWindowThreadProcessId(GetForegroundWindow(), out uint processID);
+        //    var title = GetActiveWindowTitle();
+        //    var lines = $"PID: {processID} TID: {threadID} Title:  {title}\n";
+
+        //    System.IO.File.AppendAllText(@"gettitle.txt", lines);
+        //}
+
         public void Terminate()
         {
-            _config.Switch2DefaultIME();
+            TearDown();
 
         }
     }
diff --git a/AutoIME/AutoIME/Setup.cs b/AutoIME/AutoIME/Setup.cs
index a7e19c9..8844c7b 100644
--- a/AutoIME/AutoIME/Setup.cs
+++ b/AutoIME/AutoIME/Setup.cs
@@ -80,7 +80,7 @@ private static void DocumentManager_DocumentDestroyed(object sender, DocumentDes
 
         private static void QuitWillStart(object sender, EventArgs e)
         {
-            _config.Switch2DefaultIME();
+            Program.TearDown();
         }
 
         public static void UnbindCommandToDoc(AcadDocument doc)
diff --git a/README.md b/README.md
index 3204796..4334150 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,6 @@
    2. `rhfa` -- 此为 “卸载” 的五笔编码
    3. `xzAutoIME` -- `xz`为 ”卸载“ 拼音首字母
 
-2. 显示以下信息即为安装成功：
+2. 显示以下信息即为卸载成功：
 
    ![image-20200504231359788](README/image-20200504231359788.png)
\ No newline at end of file