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diff --git a/intl/icu/source/i18n/windtfmt.h b/intl/icu/source/i18n/windtfmt.h
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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+********************************************************************************
+*   Copyright (C) 2005-2015, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+********************************************************************************
+*
+* File WINDTFMT.H
+*
+********************************************************************************
+*/
+
+#ifndef __WINDTFMT
+#define __WINDTFMT
+
+#include "unicode/utypes.h"
+
+#if U_PLATFORM_USES_ONLY_WIN32_API
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/format.h"
+#include "unicode/datefmt.h"
+#include "unicode/calendar.h"
+#include "unicode/ustring.h"
+#include "unicode/locid.h"
+
+/**
+ * \file 
+ * \brief C++ API: Format dates using Windows API.
+ */
+
+U_CDECL_BEGIN
+// Forward declarations for Windows types...
+typedef struct _SYSTEMTIME SYSTEMTIME;
+typedef struct _TIME_ZONE_INFORMATION TIME_ZONE_INFORMATION;
+U_CDECL_END
+
+U_NAMESPACE_BEGIN
+
+class Win32DateFormat : public DateFormat
+{
+public:
+    Win32DateFormat(DateFormat::EStyle timeStyle, DateFormat::EStyle dateStyle, const Locale &locale, UErrorCode &status);
+
+    Win32DateFormat(const Win32DateFormat &other);
+
+    virtual ~Win32DateFormat();
+
+    virtual Win32DateFormat *clone() const;
+
+    Win32DateFormat &operator=(const Win32DateFormat &other);
+
+    UnicodeString &format(Calendar &cal, UnicodeString &appendTo, FieldPosition &pos) const;
+
+    using DateFormat::format;
+
+    void parse(const UnicodeString& text, Calendar& cal, ParsePosition& pos) const;
+
+    /**
+     * Set the calendar to be used by this date format. Initially, the default
+     * calendar for the specified or default locale is used.  The caller should
+     * not delete the Calendar object after it is adopted by this call.
+     *
+     * @param calendarToAdopt    Calendar object to be adopted.
+     */
+    virtual void adoptCalendar(Calendar* calendarToAdopt);
+
+    /**
+     * Set the calendar to be used by this date format. Initially, the default
+     * calendar for the specified or default locale is used.
+     *
+     * @param newCalendar Calendar object to be set.
+     */
+    virtual void setCalendar(const Calendar& newCalendar);
+
+    /**
+     * Sets the time zone for the calendar of this DateFormat object. The caller
+     * no longer owns the TimeZone object and should not delete it after this call.
+     *
+     * @param zoneToAdopt the TimeZone to be adopted.
+     */
+    virtual void adoptTimeZone(TimeZone* zoneToAdopt);
+
+    /**
+     * Sets the time zone for the calendar of this DateFormat object.
+     * @param zone the new time zone.
+     */
+    virtual void setTimeZone(const TimeZone& zone);
+
+    /**
+     * Return the class ID for this class. This is useful only for comparing to
+     * a return value from getDynamicClassID(). For example:
+     * <pre>
+     * .   Base* polymorphic_pointer = createPolymorphicObject();
+     * .   if (polymorphic_pointer->getDynamicClassID() ==
+     * .       derived::getStaticClassID()) ...
+     * </pre>
+     * @return          The class ID for all objects of this class.
+     */
+    U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void);
+
+    /**
+     * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
+     * method is to implement a simple version of RTTI, since not all C++
+     * compilers support genuine RTTI. Polymorphic operator==() and clone()
+     * methods call this method.
+     *
+     * @return          The class ID for this object. All objects of a
+     *                  given class have the same class ID.  Objects of
+     *                  other classes have different class IDs.
+     */
+    virtual UClassID getDynamicClassID(void) const;
+
+private:
+    void formatDate(const SYSTEMTIME *st, UnicodeString &appendTo) const;
+    void formatTime(const SYSTEMTIME *st, UnicodeString &appendTo) const;
+
+    UnicodeString setTimeZoneInfo(TIME_ZONE_INFORMATION *tzi, const TimeZone &zone) const;
+    UnicodeString* getTimeDateFormat(const Calendar *cal, const Locale *locale, UErrorCode &status) const;
+
+    UnicodeString *fDateTimeMsg;
+    DateFormat::EStyle fTimeStyle;
+    DateFormat::EStyle fDateStyle;
+    Locale fLocale;
+    UnicodeString fZoneID;
+    TIME_ZONE_INFORMATION *fTZI;
+
+    UnicodeString* fWindowsLocaleName; // Stores the equivalent Windows locale name.
+};
+
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif // U_PLATFORM_USES_ONLY_WIN32_API
+
+#endif // __WINDTFMT