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diff --git a/src/Fl_Sys_Menu_Bar.cxx b/src/Fl_Sys_Menu_Bar.cxx
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+++ b/src/Fl_Sys_Menu_Bar.cxx
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+//
+// "$Id$"
+//
+// system menu bar widget for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2017 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     http://www.fltk.org/COPYING.php
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+
+#include <FL/Fl_Sys_Menu_Bar_Driver.H>
+#include <FL/x.H>
+
+
+Fl_Sys_Menu_Bar *fl_sys_menu_bar = 0;
+
+// initialize this static variable if it was not initialized previously
+Fl_Sys_Menu_Bar_Driver *Fl_Sys_Menu_Bar_Driver::driver_ =
+    ( driver_ ? driver_ : new Fl_Sys_Menu_Bar_Driver() );
+
+Fl_Sys_Menu_Bar_Driver *Fl_Sys_Menu_Bar::driver() {return Fl_Sys_Menu_Bar_Driver::driver_;}
+
+
+/**
+ The constructor.
+ On Mac OS X, all arguments are unused. On other platforms they are used as by Fl_Menu_Bar::Fl_Menu_Bar().
+ */
+Fl_Sys_Menu_Bar::Fl_Sys_Menu_Bar(int x,int y,int w,int h,const char *l)
+: Fl_Menu_Bar(x,y,w,h,l)
+{
+  if (fl_sys_menu_bar) delete fl_sys_menu_bar;
+  fl_sys_menu_bar = this;
+  Fl_Sys_Menu_Bar_Driver::driver_->bar = this;
+}
+
+/** The destructor */
+Fl_Sys_Menu_Bar::~Fl_Sys_Menu_Bar()
+{
+  fl_sys_menu_bar = 0;
+  clear();
+}
+
+Fl_Sys_Menu_Bar_Driver::Fl_Sys_Menu_Bar_Driver() {bar = NULL;}
+
+Fl_Sys_Menu_Bar_Driver::~Fl_Sys_Menu_Bar_Driver() {}
+
+void Fl_Sys_Menu_Bar::update() {
+  driver()->update();
+}
+
+/**
+ * @brief create a system menu bar using the given list of menu structs
+ *
+ * \author Matthias Melcher
+ *
+ * @param m Zero-ending list of Fl_Menu_Item's
+ */
+void Fl_Sys_Menu_Bar::menu(const Fl_Menu_Item *m)
+{
+  driver()->menu(m);
+}
+
+/** Changes the shortcut of item i to n.
+ */
+void Fl_Sys_Menu_Bar::shortcut (int i, int s) {
+  driver()->shortcut(i, s);
+}
+
+/** Turns the radio item "on" for the menu item and turns "off" adjacent radio items of the same group.*/
+void Fl_Sys_Menu_Bar::setonly (Fl_Menu_Item *item) {
+  driver()->setonly(item);
+}
+
+/** Sets the flags of item i
+ \see Fl_Menu_::mode(int i, int fl) */
+void   Fl_Sys_Menu_Bar::mode (int i, int fl) {
+  driver()->mode(i, fl);
+}
+
+/**
+ * @brief Add a new menu item to the system menu bar.
+ *
+ * Add to the system menu bar a new menu item, with a title string, shortcut int,
+ * callback, argument to the callback, and flags.
+ *
+ * @param label     - new menu item's label
+ * @param shortcut  - new menu item's integer shortcut (can be 0 for none, or e.g. FL_ALT+'x')
+ * @param cb        - callback to be invoked when item selected (can be 0 for none, in which case the menubar's callback() can be used instead)
+ * @param user_data - argument to the callback
+ * @param flags     - item's flags, e.g. ::FL_MENU_TOGGLE, etc.
+ *
+ * \returns the index into the menu() array, where the entry was added
+ *
+ * @see Fl_Menu_::add(const char* label, int shortcut, Fl_Callback *cb, void *user_data, int flags)
+ */
+int Fl_Sys_Menu_Bar::add(const char* label, int shortcut, Fl_Callback *cb, void *user_data, int flags)
+{
+  return driver()->add(label, shortcut, cb, user_data, flags);
+}
+
+/**
+ * Forms-compatible procedure to add items to the system menu bar
+ *
+ * \returns the index into the menu() array, where the entry was added
+ * @see Fl_Menu_::add(const char* str)
+ */
+int Fl_Sys_Menu_Bar::add(const char* str)
+{
+  return driver()->add(str);
+}
+
+/**
+ * @brief insert in the system menu bar a new menu item
+ *
+ * Insert in the system menu bar a new menu item, with a title string, shortcut int,
+ * callback, argument to the callback, and flags.
+ *
+ * \returns the index into the menu() array, where the entry was inserted
+ * @see Fl_Menu_::insert(int index, const char* label, int shortcut, Fl_Callback *cb, void *user_data, int flags)
+ */
+int Fl_Sys_Menu_Bar::insert(int index, const char* label, int shortcut, Fl_Callback *cb, void *user_data, int flags)
+{
+  return driver()->insert(index, label, shortcut, cb, user_data, flags);
+}
+
+/** Set the Fl_Menu_Item array pointer to null, indicating a zero-length menu.
+ \see Fl_Menu_::clear()
+ */
+void Fl_Sys_Menu_Bar::clear()
+{
+  driver()->clear();
+}
+
+/** Clears the specified submenu pointed to by index of all menu items.
+ \see Fl_Menu_::clear_submenu(int index)
+ */
+int Fl_Sys_Menu_Bar::clear_submenu(int index)
+{
+  return driver()->clear_submenu(index);
+}
+
+/**
+ * @brief remove an item from the system menu bar
+ *
+ * @param index    the index of the item to remove
+ */
+void Fl_Sys_Menu_Bar::remove(int index)
+{
+  driver()->remove(index);
+}
+
+/**
+ * @brief rename an item from the system menu bar
+ *
+ * @param index    the index of the item to rename
+ * @param name    the new item name as a UTF8 string
+ */
+void Fl_Sys_Menu_Bar::replace(int index, const char *name)
+{
+  driver()->replace(index, name);
+}
+
+/**
+ *  Attaches a callback to the "About myprog" item of the system application menu.
+ * This cross-platform function is effective only under the MacOS platform.
+ * \param cb   a callback that will be called by "About myprog" menu item
+ *       with NULL 1st argument.
+ * \param user_data   a pointer transmitted as 2nd argument to the callback.
+ */
+void Fl_Sys_Menu_Bar::about(Fl_Callback *cb, void *data) {
+  if (fl_sys_menu_bar) fl_sys_menu_bar->driver()->about(cb, data);
+}
+
+void Fl_Sys_Menu_Bar::draw() {
+  driver()->draw();
+}
+
+//
+// End of "$Id$".
+//