diff --git a/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs b/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
index 3695e5a..164a7d6 100644
--- a/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
+++ b/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
@@ -19,6 +19,8 @@
  * 
  */
 using System;
+using System.Collections.Generic;
+using System.ComponentModel.Design;
 using System.Runtime.InteropServices;
 using System.Text;
 
@@ -28,6 +30,9 @@ namespace WelsonJS
     {
         private IntPtr hFile;
         private IntPtr hFileMappingObject;
+        private string _lpName;
+
+        public static Dictionary<string, NamedSharedMemory> Cached;
 
         [Flags]
         public enum FileProtection : uint
@@ -91,8 +96,19 @@ namespace WelsonJS
 
         public void Open(string lpName)
         {
-            hFile = FileMappingNative.CreateFileMapping((IntPtr)(-1), IntPtr.Zero, FileProtection.PAGE_READWRITE, 0u, 1024u, lpName);
-            hFileMappingObject = FileMappingNative.MapViewOfFile(hFile, FileMapAccess.FILE_MAP_ALL_ACCESS, 0u, 0u, 1024u);
+            _lpName = lpName;
+
+            if (!Cached.ContainsKey(_lpName))
+            {
+                hFile = FileMappingNative.CreateFileMapping((IntPtr)(-1), IntPtr.Zero, FileProtection.PAGE_READWRITE, 0u, 1024u, _lpName);
+                hFileMappingObject = FileMappingNative.MapViewOfFile(hFile, FileMapAccess.FILE_MAP_ALL_ACCESS, 0u, 0u, 1024u);
+                Cached.Add(_lpName, this);
+            }
+            else
+            {
+                hFile = IntPtr.Zero;
+                hFileMappingObject = IntPtr.Zero;
+            }
         }
 
         public bool IsInitialized()
@@ -131,6 +147,11 @@ namespace WelsonJS
                 FileMappingNative.CloseHandle(hFile);
                 hFile = IntPtr.Zero;
             }
+
+            if (Cached.ContainsKey(_lpName))
+            {
+                Cached.Remove(_lpName);
+            }
         }
     }
 }
diff --git a/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs b/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
index 07e2ebf..6118735 100644
--- a/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
+++ b/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
@@ -38,15 +38,8 @@ namespace WelsonJS
     [ComVisible(true)]
     public class Toolkit
     {
-        private Dictionary<string, NamedSharedMemory> sharedMemoryDict;
-
         public static readonly string ApplicationName = "WelsonJS";
 
-        public Toolkit()
-        {
-            sharedMemoryDict = new Dictionary<string, NamedSharedMemory>();
-        }
-
         [ComVisible(true)]
         public bool SendClick(string title, int x, int y)
         {
@@ -66,6 +59,7 @@ namespace WelsonJS
             return SendKey(hWnd, key);
         }
 
+        // [ComVisible(false)]
         public bool SendKey(IntPtr hWnd, char key)
         {
             return Window.PostMessage(hWnd, (int)Window.Message.WM_CHAR, key, IntPtr.Zero);
@@ -151,20 +145,12 @@ namespace WelsonJS
 
         // [Toolkit] Access to a shared memory #96
 
-        [ComVisible(true)]
-        public bool OpenNamedSharedMemory(string lpName)
-        {
-            NamedSharedMemory sharedMemory = new NamedSharedMemory(lpName);
-            sharedMemoryDict.Add(lpName, sharedMemory);
-            return sharedMemory.IsInitialized();
-        }
-
-        [ComVisible(true)]
+        // [ComVisible(false)]
         public NamedSharedMemory GetSharedMemory(string lpName)
         {
-            if (sharedMemoryDict.ContainsKey(lpName))
+            if (NamedSharedMemory.Cached.ContainsKey(lpName))
             {
-                NamedSharedMemory sharedMemory = sharedMemoryDict[lpName];
+                NamedSharedMemory sharedMemory = NamedSharedMemory.Cached[lpName];
                 if (sharedMemory.IsInitialized())
                 {
                     return sharedMemory;
@@ -174,6 +160,14 @@ namespace WelsonJS
             return null;
         }
 
+        [ComVisible(true)]
+        public bool OpenNamedSharedMemory(string lpName)
+        {
+            NamedSharedMemory sharedMemory = new NamedSharedMemory(lpName);
+            return sharedMemory.IsInitialized();
+        }
+
+
         [ComVisible(true)]
         public void CloseNamedSharedMemory(string lpName)
         {
@@ -181,7 +175,6 @@ namespace WelsonJS
             if (sharedMemory != null)
             {
                 sharedMemory.Close();
-                sharedMemoryDict.Remove(lpName);
             }
         }