diff --git a/win/rfb_win32/DynamicFn.h b/win/rfb_win32/DynamicFn.h
new file mode 100644
index 0000000..57fdbec
--- /dev/null
+++ b/win/rfb_win32/DynamicFn.h
@@ -0,0 +1,51 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// Helper class managing dynamic linkage to DLL functions.
+
+#ifndef __RFB_WIN32_DYNAMICFN_H__
+#define __RFB_WIN32_DYNAMICFN_H__
+
+#include <windows.h>
+
+namespace rfb {
+  namespace win32 {
+
+    class DynamicFnBase {
+    public:
+      DynamicFnBase(const TCHAR* dllName, const char* fnName);
+      ~DynamicFnBase();
+      bool isValid() const {return fnPtr != 0;}
+    protected:
+      void* fnPtr;
+      HMODULE dllHandle;
+    private:
+      DynamicFnBase(const DynamicFnBase&);
+      DynamicFnBase operator=(const DynamicFnBase&);
+    };
+
+    template<class T> class DynamicFn : public DynamicFnBase {
+    public:
+      DynamicFn(const TCHAR* dllName, const char* fnName) : DynamicFnBase(dllName, fnName) {}
+      T operator *() const {return (T)fnPtr;};
+    };
+
+  };
+};
+
+#endif