diff --git a/c++/etip.h b/c++/etip.h
new file mode 100644
index 0000000..9244afd
--- /dev/null
+++ b/c++/etip.h
@@ -0,0 +1,406 @@
+// * This makes emacs happy -*-Mode: C++;-*-
+/****************************************************************************
+ * Copyright 2018-2021,2022 Thomas E. Dickey                                *
+ * Copyright 1998-2012,2017 Free Software Foundation, Inc.                  *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author: Juergen Pfeifer, 1997                                          *
+ ****************************************************************************/
+
+// $Id: etip.h.in,v 1.50 2022/08/20 20:50:00 tom Exp $
+
+#ifndef NCURSES_ETIP_H_incl
+#define NCURSES_ETIP_H_incl 1
+
+// These are substituted at configure/build time
+#ifndef HAVE_BUILTIN_H
+#define HAVE_BUILTIN_H 0
+#endif
+
+#ifndef HAVE_GXX_BUILTIN_H
+#define HAVE_GXX_BUILTIN_H 0
+#endif
+
+#ifndef HAVE_GPP_BUILTIN_H
+#define HAVE_GPP_BUILTIN_H 0
+#endif
+
+#ifndef HAVE_IOSTREAM
+#define HAVE_IOSTREAM 1
+#endif
+
+#ifndef HAVE_TYPEINFO
+#define HAVE_TYPEINFO 1
+#endif
+
+#ifndef HAVE_VALUES_H
+#define HAVE_VALUES_H 0
+#endif
+
+#ifndef ETIP_NEEDS_MATH_H
+#define ETIP_NEEDS_MATH_H 0
+#endif
+
+#ifndef ETIP_NEEDS_MATH_EXCEPTION
+#define ETIP_NEEDS_MATH_EXCEPTION 0
+#endif
+
+#ifndef CPP_HAS_OVERRIDE
+#define CPP_HAS_OVERRIDE 0
+#endif
+
+#ifndef CPP_HAS_PARAM_INIT
+#define CPP_HAS_PARAM_INIT 0
+#endif
+
+#ifndef CPP_HAS_STATIC_CAST
+#define CPP_HAS_STATIC_CAST 1
+#endif
+
+#ifndef IOSTREAM_NAMESPACE
+#define IOSTREAM_NAMESPACE 1
+#endif
+
+#ifdef __GNUG__
+#  if ((__GNUG__ <= 2) && (__GNUC_MINOR__ < 8))
+#    if HAVE_TYPEINFO
+#      include <typeinfo>
+#    endif
+#  endif
+#endif
+
+#if defined(__GNUG__)
+#  if HAVE_BUILTIN_H || HAVE_GXX_BUILTIN_H || HAVE_GPP_BUILTIN_H
+#    if ETIP_NEEDS_MATH_H
+#      if ETIP_NEEDS_MATH_EXCEPTION
+#        undef exception
+#        define exception math_exception
+#      endif
+#      include <math.h>
+#    endif
+#    undef exception
+#    define exception builtin_exception
+#    if HAVE_GPP_BUILTIN_H
+#     include <gpp/builtin.h>
+#    elif HAVE_GXX_BUILTIN_H
+#     include <g++/builtin.h>
+#    else
+#     include <builtin.h>
+#    endif
+#    undef exception
+#  endif
+#elif defined (__SUNPRO_CC)
+#  include <generic.h>
+#endif
+
+#include <curses.h>
+
+extern "C" {
+#if HAVE_VALUES_H
+#  include <values.h>
+#endif
+
+#include <assert.h>
+#include <eti.h>
+#include <errno.h>
+}
+
+// Language features
+#if CPP_HAS_OVERRIDE
+#define NCURSES_OVERRIDE override
+#else
+#define NCURSES_OVERRIDE /*nothing*/
+#endif
+
+#if CPP_HAS_PARAM_INIT
+#define NCURSES_PARAM_INIT(value) = value
+#else
+#define NCURSES_PARAM_INIT(value) /*nothing*/
+#endif
+
+#if CPP_HAS_STATIC_CAST
+#define STATIC_CAST(s) static_cast<s>
+#else
+#define STATIC_CAST(s) (s)
+#endif
+
+#ifndef NCURSES_CXX_IMPEXP
+#define NCURSES_CXX_IMPEXP  /* nothing */
+#endif
+
+// Forward Declarations
+class NCURSES_CXX_IMPEXP NCursesPanel;
+class NCURSES_CXX_IMPEXP NCursesMenu;
+class NCURSES_CXX_IMPEXP NCursesForm;
+
+class NCURSES_CXX_IMPEXP NCursesException
+{
+public:
+  const char *message;
+  int errorno;
+
+  NCursesException (const char* msg, int err)
+    : message(msg), errorno (err)
+    {};
+
+  explicit NCursesException (const char* msg)
+    : message(msg), errorno (E_SYSTEM_ERROR)
+    {};
+
+  NCursesException& operator=(const NCursesException& rhs)
+  {
+    message = rhs.message;
+    errorno = rhs.errorno;
+    return *this;
+  }
+
+  NCursesException(const NCursesException& rhs)
+    : message(rhs.message), errorno(rhs.errorno)
+  {
+  }
+
+  virtual const char *classname() const {
+    return "NCursesWindow";
+  }
+
+  virtual ~NCursesException()
+  {
+  }
+};
+
+class NCURSES_CXX_IMPEXP NCursesPanelException : public NCursesException
+{
+public:
+  const NCursesPanel* p;
+
+  NCursesPanelException (const char *msg, int err) :
+    NCursesException (msg, err),
+    p (0)
+    {};
+
+  NCursesPanelException (const NCursesPanel* panel,
+			 const char *msg,
+			 int err) :
+    NCursesException (msg, err),
+    p (panel)
+    {};
+
+  explicit NCursesPanelException (int err) :
+    NCursesException ("panel library error", err),
+    p (0)
+    {};
+
+  NCursesPanelException (const NCursesPanel* panel,
+			 int err) :
+    NCursesException ("panel library error", err),
+    p (panel)
+    {};
+
+  NCursesPanelException& operator=(const NCursesPanelException& rhs)
+  {
+    if (this != &rhs) {
+      NCursesException::operator=(rhs);
+      p = rhs.p;
+    }
+    return *this;
+  }
+
+  NCursesPanelException(const NCursesPanelException& rhs)
+    : NCursesException(rhs), p(rhs.p)
+  {
+  }
+
+  virtual const char *classname() const NCURSES_OVERRIDE {
+    return "NCursesPanel";
+  }
+
+  virtual ~NCursesPanelException()
+  {
+  }
+};
+
+class NCURSES_CXX_IMPEXP NCursesMenuException : public NCursesException
+{
+public:
+  const NCursesMenu* m;
+
+  NCursesMenuException (const char *msg, int err) :
+    NCursesException (msg, err),
+    m (0)
+    {};
+
+  NCursesMenuException (const NCursesMenu* menu,
+			const char *msg,
+			int err) :
+    NCursesException (msg, err),
+    m (menu)
+    {};
+
+  explicit NCursesMenuException (int err) :
+    NCursesException ("menu library error", err),
+    m (0)
+    {};
+
+  NCursesMenuException (const NCursesMenu* menu,
+			int err) :
+    NCursesException ("menu library error", err),
+    m (menu)
+    {};
+
+  NCursesMenuException& operator=(const NCursesMenuException& rhs)
+  {
+    if (this != &rhs) {
+      NCursesException::operator=(rhs);
+      m = rhs.m;
+    }
+    return *this;
+  }
+
+  NCursesMenuException(const NCursesMenuException& rhs)
+    : NCursesException(rhs), m(rhs.m)
+  {
+  }
+
+  virtual const char *classname() const NCURSES_OVERRIDE {
+    return "NCursesMenu";
+  }
+
+  virtual ~NCursesMenuException()
+  {
+  }
+};
+
+class NCURSES_CXX_IMPEXP NCursesFormException : public NCursesException
+{
+public:
+  const NCursesForm* f;
+
+  NCursesFormException (const char *msg, int err) :
+    NCursesException (msg, err),
+    f (0)
+    {};
+
+  NCursesFormException (const NCursesForm* form,
+			const char *msg,
+			int err) :
+    NCursesException (msg, err),
+    f (form)
+    {};
+
+  explicit NCursesFormException (int err) :
+    NCursesException ("form library error", err),
+    f (0)
+    {};
+
+  NCursesFormException (const NCursesForm* form,
+			int err) :
+    NCursesException ("form library error", err),
+    f (form)
+    {};
+
+  NCursesFormException& operator=(const NCursesFormException& rhs)
+  {
+    if (this != &rhs) {
+      NCursesException::operator=(rhs);
+      f = rhs.f;
+    }
+    return *this;
+  }
+
+  NCursesFormException(const NCursesFormException& rhs)
+    : NCursesException(rhs), f(rhs.f)
+  {
+  }
+
+  virtual const char *classname() const NCURSES_OVERRIDE {
+    return "NCursesForm";
+  }
+
+  virtual ~NCursesFormException()
+  {
+  }
+};
+
+#if !((defined(__GNUG__) && defined(__EXCEPTIONS) && (__GNUG__ < 7)) || defined(__SUNPRO_CC))
+#  if HAVE_IOSTREAM
+#     include <iostream>
+#     if IOSTREAM_NAMESPACE
+using std::cerr;
+using std::endl;
+#     endif
+#  else
+#     include <iostream.h>
+#  endif
+#endif
+
+inline void THROW(const NCursesException *e) {
+#if defined(__GNUG__) && defined(__EXCEPTIONS)
+#  if ((__GNUG__ <= 2) && (__GNUC_MINOR__ < 8))
+      (*lib_error_handler)(e ? e->classname() : "", e ? e->message : "");
+#  elif (__GNUG__ >= 7)
+     // g++ 7.0 warns about deprecation, but lacks the predefined symbols
+      ::endwin();
+      std::cerr << "Found a problem - goodbye" << std::endl;
+      exit(EXIT_FAILURE);
+#  else
+#    define CPP_HAS_TRY_CATCH 1
+#  endif
+#elif defined(__SUNPRO_CC)
+#  if !defined(__SUNPRO_CC_COMPAT) || (__SUNPRO_CC_COMPAT < 5)
+  genericerror(1, ((e != 0) ? (char *)(e->message) : ""));
+#  else
+#    define CPP_HAS_TRY_CATCH 1
+#  endif
+#else
+  if (e)
+    cerr << e->message << endl;
+  exit(0);
+#endif
+
+#ifndef CPP_HAS_TRY_CATCH
+#define CPP_HAS_TRY_CATCH 0
+#define NCURSES_CPP_TRY		/* nothing */
+#define NCURSES_CPP_CATCH(e)	if (false)
+#define THROWS(s)		/* nothing */
+#define THROW2(s,t)		/* nothing */
+#elif CPP_HAS_TRY_CATCH
+  throw *e;
+#define NCURSES_CPP_TRY		try
+#define NCURSES_CPP_CATCH(e)	catch(e)
+#if defined(__cpp_noexcept_function_type) && (__cpp_noexcept_function_type >= 201510)
+// C++17 deprecates the usage of throw().
+#define THROWS(s)		/* nothing */
+#define THROW2(s,t)		/* nothing */
+#else
+#define THROWS(s)		throw(s)
+#define THROW2(s,t)		throw(s,t)
+#endif
+#endif
+}
+
+#endif /* NCURSES_ETIP_H_incl */