1. wxDir works for MSW and documented

[wxWidgets.git] / include / wx / datetime.h

diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index ff3f5db6decadab5f8663aa0fb30a4d9e2c224fe..c0091ce1424e765ea8a478960c6c0e60a2e1eae0 100644 (file)
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -10,14 +10,15 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 

-#ifndef _WX_TIME_H
-#define _WX_TIME_H
+#ifndef _WX_DATETIME_H
+#define _WX_DATETIME_H

 
 #ifdef __GNUG__
     #pragma interface "datetime.h"
 #endif
 
 #include <time.h>
 
 #ifdef __GNUG__
     #pragma interface "datetime.h"
 #endif
 
 #include <time.h>

+#include <limits.h>             // for INT_MIN

 
 #include "wx/longlong.h"
 
 
 #include "wx/longlong.h"
 


@@ -25,16 +26,25 @@ class WXDLLEXPORT wxDateTime;
 class WXDLLEXPORT wxTimeSpan;
 class WXDLLEXPORT wxDateSpan;
 
 class WXDLLEXPORT wxTimeSpan;
 class WXDLLEXPORT wxDateSpan;
 

+// don't use inline functions in debug builds - we don't care about
+// performances and this only leads to increased rebuild time (because every
+// time an inline method is changed, all files including the header must be
+// rebuilt)
+#ifdef __WXDEBUG__
+    #define inline
+#endif // Debug
+

 /*
  * TODO Well, everything :-)
  *
 /*
  * TODO Well, everything :-)
  *

- * 1. Time zones with minutes (make wxTimeZone a class)
- * 2. getdate() function like under Solaris
- * 3. text conversion for wxDateSpan
+ * + 1. Time zones with minutes (make TimeZone a class)
+ *   2. getdate() function like under Solaris
+ * + 3. text conversion for wxDateSpan
+ *   4. pluggable modules for the workdays calculations

  */
 
 /*
  */
 
 /*

-  The three classes declared in this header represent:
+  The three (main) classes declared in this header represent:

 
   1. An absolute moment in the time (wxDateTime)
   2. A difference between two moments in the time, positive or negative
 
   1. An absolute moment in the time (wxDateTime)
   2. A difference between two moments in the time, positive or negative


@@ -72,6 +82,7 @@ class WXDLLEXPORT wxDateSpan;
 // ----------------------------------------------------------------------------
 // This class represents an absolute moment in the time
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // This class represents an absolute moment in the time
 // ----------------------------------------------------------------------------

+

 class WXDLLEXPORT wxDateTime
 {
 public:
 class WXDLLEXPORT wxDateTime
 {
 public:


@@ -86,7 +97,7 @@ public:
     typedef unsigned short wxDateTime_t;
 
         // the timezones
     typedef unsigned short wxDateTime_t;
 
         // the timezones

-    enum TimeZone
+    enum TZ

     {
         // the time in the current time zone
         Local,
     {
         // the time in the current time zone
         Local,


@@ -104,10 +115,45 @@ public:
         // Note that GMT12 and GMT_12 are not the same: there is a difference
         // of exactly one day between them
 
         // Note that GMT12 and GMT_12 are not the same: there is a difference
         // of exactly one day between them
 

-        // Universal Coordinated Time
+        // some symbolic names for TZ
+
+        // Europe
+        WET = GMT0,                         // Western Europe Time
+        WEST = GMT1,                        // Western Europe Summer Time
+        CET = GMT1,                         // Central Europe Time
+        CEST = GMT2,                        // Central Europe Summer Time
+        EET = GMT2,                         // Eastern Europe Time
+        EEST = GMT3,                        // Eastern Europe Summer Time
+        MSK = GMT3,                         // Moscow Time
+        MSD = GMT4,                         // Moscow Summer Time
+
+        // US and Canada
+        AST = GMT_4,                        // Atlantic Standard Time
+        ADT = GMT_3,                        // Atlantic Daylight Time
+        EST = GMT_5,                        // Eastern Standard Time
+        EDT = GMT_4,                        // Eastern Daylight Saving Time
+        CST = GMT_6,                        // Central Standard Time
+        CDT = GMT_5,                        // Central Daylight Saving Time
+        MST = GMT_7,                        // Mountain Standard Time
+        MDT = GMT_6,                        // Mountain Daylight Saving Time
+        PST = GMT_8,                        // Pacific Standard Time
+        PDT = GMT_7,                        // Pacific Daylight Saving Time
+        HST = GMT_10,                       // Hawaiian Standard Time
+        AKST = GMT_9,                       // Alaska Standard Time
+        AKDT = GMT_8,                       // Alaska Daylight Saving Time
+
+        // Australia
+
+        A_WST = GMT8,                       // Western Standard Time
+        A_CST = GMT12 + 1,                  // Central Standard Time (+9.5)
+        A_EST = GMT10,                      // Eastern Standard Time
+        A_ESST = GMT11,                     // Eastern Summer Time
+
+        // TODO add more symbolic timezone names here
+
+        // Universal Coordinated Time = the new and politically correct name
+        // for GMT

         UTC = GMT0
         UTC = GMT0

-
-        // TODO add symbolic names for TZ (EST, MET, ...)?

     };
 
         // the calendar systems we know about: notice that it's valid (for
     };
 
         // the calendar systems we know about: notice that it's valid (for


@@ -271,7 +317,74 @@ public:
         // invalid value for the year
     enum Year
     {
         // invalid value for the year
     enum Year
     {

-        Inv_Year = INT_MIN
+        Inv_Year = SHRT_MIN    // should hold in wxDateTime_t
+    };
+
+    // helper classes
+    // ------------------------------------------------------------------------
+
+        // a class representing a time zone: basicly, this is just an offset
+        // (in seconds) from GMT
+    class TimeZone
+    {
+    public:
+        TimeZone(TZ tz);
+        TimeZone(wxDateTime_t offset = 0) { m_offset = offset; }
+
+        int GetOffset() const { return m_offset; }
+
+    private:
+        // offset for this timezone from GMT in seconds
+        int m_offset;
+    };
+
+        // standard struct tm is limited to the years from 1900 (because
+        // tm_year field is the offset from 1900), so we use our own struct
+        // instead to represent broken down time
+        //
+        // NB: this struct should always be kept normalized (i.e. mon should
+        //     be < 12, 1 <= day <= 31 &c), so use AddMonths(), AddDays()
+        //     instead of modifying the member fields directly!
+    struct Tm
+    {
+        wxDateTime_t msec, sec, min, hour, mday;
+        Month mon;
+        int year;
+
+        // default ctor inits the object to an invalid value
+        Tm();
+
+        // ctor from struct tm and the timezone
+        Tm(const struct tm& tm, const TimeZone& tz);
+
+        // check that the given date/time is valid (in Gregorian calendar)
+        bool IsValid() const;
+
+        // get the week day
+        WeekDay GetWeekDay() // not const because wday may be changed
+        {
+            if ( wday == Inv_WeekDay )
+                ComputeWeekDay();
+
+            return (WeekDay)wday;
+        }
+
+        // add the given number of months to the date keeping it normalized
+        void AddMonths(int monDiff);
+
+        // add the given number of months to the date keeping it normalized
+        void AddDays(int dayDiff);
+
+    private:
+        // compute the weekday from other fields
+        void ComputeWeekDay();
+
+        // the timezone we correspond to
+        TimeZone m_tz;
+
+        // these values can't be accessed directly because they're not always
+        // computed and we calculate them on demand
+        wxDateTime_t wday, yday;

     };
 
     // static methods
     };
 
     // static methods


@@ -280,7 +393,7 @@ public:
         // set the current country
     static void SetCountry(Country country);
         // get the current country
         // set the current country
     static void SetCountry(Country country);
         // get the current country

-    static Country GetCountry();
+    static inline Country GetCountry();

 
         // return the current year
     static int GetCurrentYear(Calendar cal = Gregorian);
 
         // return the current year
     static int GetCurrentYear(Calendar cal = Gregorian);


@@ -295,9 +408,13 @@ public:
     static Month GetCurrentMonth(Calendar cal = Gregorian);
 
         // returns TRUE if the given year is a leap year in the given calendar
     static Month GetCurrentMonth(Calendar cal = Gregorian);
 
         // returns TRUE if the given year is a leap year in the given calendar

-    static bool IsLeapYear(int year, Calendar cal = Gregorian);
+    static bool IsLeapYear(int year = Inv_Year, Calendar cal = Gregorian);
+
+        // get the century (19 for 1999, 20 for 2000 and -5 for 492 BC)
+    static int GetCentury(int year = Inv_Year);

 
 

-        // returns the number of days in this year (356 or 355 typically :-)
+        // returns the number of days in this year (356 or 355 for Gregorian
+        // calendar usually :-)

     static wxDateTime_t GetNumberOfDays(int year, Calendar cal = Gregorian);
 
         // get the number of the days in the given month (default value for
     static wxDateTime_t GetNumberOfDays(int year, Calendar cal = Gregorian);
 
         // get the number of the days in the given month (default value for


@@ -306,11 +423,13 @@ public:
                                         int year = Inv_Year,
                                         Calendar cal = Gregorian);
 
                                         int year = Inv_Year,
                                         Calendar cal = Gregorian);
 

-        // get the month name in the current locale
-    static wxString GetMonthName(Month month);
+        // get the full (default) or abbreviated month name in the current
+        // locale, returns empty string on error
+    static wxString GetMonthName(Month month, bool abbr = FALSE);

 
 

-        // get the weekday name in the current locale
-    static wxString GetDayOfWeekName(WeekDay weekday);
+        // get the full (default) or abbreviated weekday name in the current
+        // locale, returns empty string on error
+    static wxString GetWeekDayName(WeekDay weekday, bool abbr = FALSE);

 
         // get the beginning of DST for this year, will return invalid object
         // if no DST applicable in this year. The default value of the
 
         // get the beginning of DST for this year, will return invalid object
         // if no DST applicable in this year. The default value of the


@@ -321,6 +440,9 @@ public:
         // parameter means to take the current year.
     static wxDateTime GetEndDST(int year = Inv_Year);
 
         // parameter means to take the current year.
     static wxDateTime GetEndDST(int year = Inv_Year);
 

+        // return the wxDateTime object for the current time
+    static inline wxDateTime Now();
+

     // constructors: you should test whether the constructor succeeded with
     // IsValid() function. The values Inv_Month and Inv_Year for the
     // parameters mean take current month and/or year values.
     // constructors: you should test whether the constructor succeeded with
     // IsValid() function. The values Inv_Month and Inv_Year for the
     // parameters mean take current month and/or year values.


@@ -331,8 +453,13 @@ public:
 
         // from time_t: seconds since the Epoch 00:00:00 UTC, Jan 1, 1970)
     inline wxDateTime(time_t timet);
 
         // from time_t: seconds since the Epoch 00:00:00 UTC, Jan 1, 1970)
     inline wxDateTime(time_t timet);

-        // from broken down time/date
+        // from broken down time/date (only for standard Unix range)

     inline wxDateTime(const struct tm& tm);
     inline wxDateTime(const struct tm& tm);

+        // from broken down time/date (any range)
+    inline wxDateTime(const Tm& tm);
+
+        // from JDN (beware of rounding errors)
+    inline wxDateTime(double jdn);

 
         // from separate values for each component, date set to today
     inline wxDateTime(wxDateTime_t hour,
 
         // from separate values for each component, date set to today
     inline wxDateTime(wxDateTime_t hour,


@@ -340,7 +467,7 @@ public:
                       wxDateTime_t second = 0,
                       wxDateTime_t millisec = 0);
         // from separate values for each component with explicit date
                       wxDateTime_t second = 0,
                       wxDateTime_t millisec = 0);
         // from separate values for each component with explicit date

-    inline wxDateTime(wxDateTime_t day,
+    inline wxDateTime(wxDateTime_t day,             // day of the month

                       Month        month = Inv_Month,
                       int          year = Inv_Year, // 1999, not 99 please!
                       wxDateTime_t hour = 0,
                       Month        month = Inv_Month,
                       int          year = Inv_Year, // 1999, not 99 please!
                       wxDateTime_t hour = 0,


@@ -366,6 +493,12 @@ public:
         // set to given broken down time/date
     wxDateTime& Set(const struct tm& tm);
 
         // set to given broken down time/date
     wxDateTime& Set(const struct tm& tm);
 

+        // set to given broken down time/date
+    inline wxDateTime& Set(const Tm& tm);
+
+        // set to given JDN (beware of rounding errors)
+    wxDateTime& Set(double jdn);
+

         // set to given time, date = today
     wxDateTime& Set(wxDateTime_t hour,
                     wxDateTime_t minute = 0,
         // set to given time, date = today
     wxDateTime& Set(wxDateTime_t hour,
                     wxDateTime_t minute = 0,


@@ -409,6 +542,9 @@ public:
         // assignment operator from broken down time/date
     wxDateTime& operator=(const struct tm& tm) { return Set(tm); }
 
         // assignment operator from broken down time/date
     wxDateTime& operator=(const struct tm& tm) { return Set(tm); }
 

+        // assignment operator from broken down time/date
+    wxDateTime& operator=(const Tm& tm) { return Set(tm); }
+

         // default assignment operator is ok
 
     // calendar calculations (functions which set the date only leave the time
         // default assignment operator is ok
 
     // calendar calculations (functions which set the date only leave the time


@@ -421,12 +557,12 @@ public:
         // of the month (see helper function SetToLastWeekDay())
     bool SetToWeekDay(WeekDay weekday,
                       int n = 1,
         // of the month (see helper function SetToLastWeekDay())
     bool SetToWeekDay(WeekDay weekday,
                       int n = 1,

-                      wxDateTime_t month = Inv_Month,
+                      Month month = Inv_Month,

                       int year = Inv_Year);
 
         // sets to the last weekday in the given month, year
     inline bool SetToLastWeekDay(WeekDay weekday,
                       int year = Inv_Year);
 
         // sets to the last weekday in the given month, year
     inline bool SetToLastWeekDay(WeekDay weekday,

-                                 wxDateTime_t month = Inv_Month,
+                                 Month month = Inv_Month,

                                  int year = Inv_Year);
 
         // sets the date to the given day of the given week in the year,
                                  int year = Inv_Year);
 
         // sets the date to the given day of the given week in the year,


@@ -434,8 +570,10 @@ public:
         // numWeek is > 53)
     bool SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday = Mon);
 
         // numWeek is > 53)
     bool SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday = Mon);
 

-        // get the century (19 for 1999, 20 for 2000 and -5 for 492 BC)
-    int GetCentury() const;
+        // sets the date to the last day of the given (or current) month or the
+        // given (or current) year
+    wxDateTime& SetToLastMonthDay(Month month = Inv_Month,
+                                  int year = Inv_Year);

 
         // The definitions below were taken verbatim from
         //
 
         // The definitions below were taken verbatim from
         //


@@ -459,16 +597,33 @@ public:
         // of days relative to a base date of December 31 of the year 0. Thus
         // January 1 of the year 1 is Rata Die day 1.
 
         // of days relative to a base date of December 31 of the year 0. Thus
         // January 1 of the year 1 is Rata Die day 1.
 

-        // get the Julian Day number
-    long GetJulianDay() const;
+        // get the Julian Day number (the fractional part specifies the time of
+        // the day, related to noon - beware of rounding errors!)
+    double GetJulianDayNumber() const;

 
         // get the Rata Die number
 
         // get the Rata Die number

-    long GetRataDie() const;
+    double GetRataDie() const;

 
         // TODO algorithms for calculating some important dates, such as
         //      religious holidays (Easter...) or moon/solar eclipses? Some
         //      algorithms can be found in the calendar FAQ
 
 
         // TODO algorithms for calculating some important dates, such as
         //      religious holidays (Easter...) or moon/solar eclipses? Some
         //      algorithms can be found in the calendar FAQ
 

+    // timezone stuff: a wxDateTime object constructed using given
+    // day/month/year/hour/min/sec values correspond to this moment in local
+    // time. Using the functions below, it may be converted to another time
+    // zone (for example, the Unix epoch is wxDateTime(1, Jan, 1970).ToGMT())
+    //
+    // Converting to the local time zone doesn't do anything.
+    // ------------------------------------------------------------------------
+
+        // transform to any given timezone
+    inline wxDateTime ToTimezone(const TimeZone& tz) const;
+    wxDateTime& MakeTimezone(const TimeZone& tz);
+
+        // transform to GMT/UTC
+    wxDateTime ToGMT() const { return ToTimezone(GMT0); }
+    wxDateTime& MakeGMT() { return MakeTimezone(GMT0); }
+

     // accessors: many of them take the timezone parameter which indicates the
     // timezone for which to make the calculations and the default value means
     // to do it for the current timezone of this machine (even if the function
     // accessors: many of them take the timezone parameter which indicates the
     // timezone for which to make the calculations and the default value means
     // to do it for the current timezone of this machine (even if the function


@@ -480,32 +635,52 @@ public:
         // the functions which failed to convert the date to supported range)
     inline bool IsValid() const { return this != &ms_InvDateTime; }
 
         // the functions which failed to convert the date to supported range)
     inline bool IsValid() const { return this != &ms_InvDateTime; }
 

+        // get the broken down date/time representation in the given timezone
+        //
+        // If you wish to get several time components (day, month and year),
+        // consider getting the whole Tm strcuture first and retrieving the
+        // value from it - this is much more efficient
+    Tm GetTm(const TimeZone& tz = Local) const;
+
+        // get the number of seconds since the Unix epoch - returns (time_t)-1
+        // if the value is out of range
+    inline time_t GetTicks() const;
+

         // get the year (returns Inv_Year if date is invalid)
         // get the year (returns Inv_Year if date is invalid)

-    int GetYear(TimeZone zone = Local) const;
+    int GetYear(const TimeZone& tz = Local) const 
+            { return GetTm(tz).year; }

         // get the month (Inv_Month if date is invalid)
         // get the month (Inv_Month if date is invalid)

-    Month GetMonth(TimeZone zone = Local) const;
+    Month GetMonth(const TimeZone& tz = Local) const 
+            { return (Month)GetTm(tz).mon; }

         // get the month day (in 1..31 range, 0 if date is invalid)
         // get the month day (in 1..31 range, 0 if date is invalid)

-    wxDateTime_t GetDay(TimeZone zone = Local) const;
+    wxDateTime_t GetDay(const TimeZone& tz = Local) const 
+            { return GetTm(tz).mday; }

         // get the day of the week (Inv_WeekDay if date is invalid)
         // get the day of the week (Inv_WeekDay if date is invalid)

-    WeekDay GetDayOfWeek(TimeZone zone = Local) const;
+    WeekDay GetWeekDay(const TimeZone& tz = Local) const 
+            { return GetTm(tz).GetWeekDay(); }

         // get the hour of the day
         // get the hour of the day

-    wxDateTime_t GetHour(TimeZone zone = Local) const;
+    wxDateTime_t GetHour(const TimeZone& tz = Local) const 
+            { return GetTm(tz).hour; }

         // get the minute
         // get the minute

-    wxDateTime_t GetMinute(TimeZone zone = Local) const;
+    wxDateTime_t GetMinute(const TimeZone& tz = Local) const 
+            { return GetTm(tz).min; }

         // get the second
         // get the second

-    wxDateTime_t GetSecond(TimeZone zone = Local) const;
+    wxDateTime_t GetSecond(const TimeZone& tz = Local) const 
+            { return GetTm(tz).sec; }

         // get milliseconds
         // get milliseconds

-    wxDateTime_t GetMillisecond(TimeZone zone = Local) const;
+    wxDateTime_t GetMillisecond(const TimeZone& tz = Local) const 
+            { return GetTm(tz).msec; }

 
         // get the day since the year start (1..366, 0 if date is invalid)
 
         // get the day since the year start (1..366, 0 if date is invalid)

-    wxDateTime_t GetDayOfYear() const;
+    wxDateTime_t GetDayOfYear(const TimeZone& tz = Local) const;

         // get the week number since the year start (1..52, 0 if date is
         // invalid)
         // get the week number since the year start (1..52, 0 if date is
         // invalid)

-    wxDateTime_t GetWeekOfYear() const;
+    wxDateTime_t GetWeekOfYear(const TimeZone& tz = Local) const;

 
         // is this date a work day? This depends on a country, of course,
         // because the holidays are different in different countries
 
         // is this date a work day? This depends on a country, of course,
         // because the holidays are different in different countries

-    bool IsWorkDay(Country country = Current, TimeZone zone = local) const;
+    bool IsWorkDay(Country country = Country_Default,
+                   const TimeZone& tz = Local) const;

 
         // is this date later than Gregorian calendar introduction for the
         // given country (see enum GregorianAdoption)?
 
         // is this date later than Gregorian calendar introduction for the
         // given country (see enum GregorianAdoption)?


@@ -513,36 +688,48 @@ public:
         // NB: this function shouldn't be considered as absolute authoiruty in
         //     the matter. Besides, for some countries the exact date of
         //     adoption of the Gregorian calendar is simply unknown.
         // NB: this function shouldn't be considered as absolute authoiruty in
         //     the matter. Besides, for some countries the exact date of
         //     adoption of the Gregorian calendar is simply unknown.

-    bool IsGregorianDate(GregorianAdoption country = Gregorian_Standard) const;
+    bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;

 
 

-        // is daylight savings time in effect at this moment?
+        // is daylight savings time in effect at this moment according to the
+        // rules of the specified country?

         //
         // Return value is > 0 if DST is in effect, 0 if it is not and -1 if
         // the information is not available (this is compatible with ANSI C)
         //
         // Return value is > 0 if DST is in effect, 0 if it is not and -1 if
         // the information is not available (this is compatible with ANSI C)

-    int IsDST(Country country = Country_Default, TimeZone zone = local) const;
+    int IsDST(Country country = Country_Default) const;

 
     // comparison (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 
 
     // comparison (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 

+        // returns TRUE if the two moments are strictly identical
+    inline bool IsEqualTo(const wxDateTime& datetime) const;
+
+        // returns TRUE if the two moments are identical
+    inline bool operator==(const wxDateTime& datetime) const;
+
+        // returns TRUE if the two moments are different
+    inline bool operator!=(const wxDateTime& datetime) const;
+

         // returns TRUE if the date is strictly earlier than the given one
         // returns TRUE if the date is strictly earlier than the given one

-    bool IsEarlierThan(const wxDateTime& datetime) const;
+    inline bool IsEarlierThan(const wxDateTime& datetime) const;

 
         // returns TRUE if the date is strictly later than the given one
 
         // returns TRUE if the date is strictly later than the given one

-    bool IsLaterThan(const wxDateTime& datetime) const;
+    inline bool IsLaterThan(const wxDateTime& datetime) const;

 
         // returns TRUE if the date is strictly in the given range
 
         // returns TRUE if the date is strictly in the given range

-    bool IsStrictlyBetween(const wxDateTime& t1, const wxDateTime& t2) const;
+    inline bool IsStrictlyBetween(const wxDateTime& t1,
+                                  const wxDateTime& t2) const;
+

         // returns TRUE if the date is in the given range
         // returns TRUE if the date is in the given range

-    bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;
+    inline bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;

 
     // date operations: for the non-const methods, the return value is this
     // object itself (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 
         // add a time span (positive or negative)
 
     // date operations: for the non-const methods, the return value is this
     // object itself (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 
         // add a time span (positive or negative)

-    wxDateTime& Add(const wxTimeSpan& diff);
+    inline wxDateTime& Add(const wxTimeSpan& diff);

         // add a time span (positive or negative)
         // add a time span (positive or negative)

-    wxDateTime& operator+=(const wxTimeSpan& diff) { return Add(diff); }
+    inline wxDateTime& operator+=(const wxTimeSpan& diff);

 
         // substract a time span (positive or negative)
     inline wxDateTime& Substract(const wxTimeSpan& diff);
 
         // substract a time span (positive or negative)
     inline wxDateTime& Substract(const wxTimeSpan& diff);


@@ -552,7 +739,7 @@ public:
         // add a date span (positive or negative)
     wxDateTime& Add(const wxDateSpan& diff);
         // add a date span (positive or negative)
         // add a date span (positive or negative)
     wxDateTime& Add(const wxDateSpan& diff);
         // add a date span (positive or negative)

-    wxDateTime& operator+=(const wxDateSpan& diff) { return Add(diff); }
+    inline wxDateTime& operator+=(const wxDateSpan& diff);

 
         // substract a date span (positive or negative)
     inline wxDateTime& Substract(const wxDateSpan& diff);
 
         // substract a date span (positive or negative)
     inline wxDateTime& Substract(const wxDateSpan& diff);


@@ -560,9 +747,9 @@ public:
     inline wxDateTime& operator-=(const wxDateSpan& diff);
 
         // substract a date (may result in positive or negative time span)
     inline wxDateTime& operator-=(const wxDateSpan& diff);
 
         // substract a date (may result in positive or negative time span)

-    wxTimeSpan Substract(const wxDateTime& datetime) const;
+    inline wxTimeSpan Substract(const wxDateTime& datetime) const;

         // substract a date (may result in positive or negative time span)
         // substract a date (may result in positive or negative time span)

-    wxTimeSpan operator-(const wxDateTime& datetime) const;
+    inline wxTimeSpan operator-(const wxDateTime& datetime) const;

 
     // conversion to/from text: all conversions from text return TRUE on
     // success or FALSE if the date is malformed/out of supported range
 
     // conversion to/from text: all conversions from text return TRUE on
     // success or FALSE if the date is malformed/out of supported range


@@ -582,11 +769,12 @@ public:
         // argument corresponds to the preferred date and time representation
         // for the current locale) and returns the string containing the
         // resulting text representation
         // argument corresponds to the preferred date and time representation
         // for the current locale) and returns the string containing the
         // resulting text representation

-    wxString Format(const char *format = "%c") const;
+    wxString Format(const wxChar *format = _T("%c"),
+                    const TimeZone& tz = Local) const;

         // preferred date representation for the current locale
         // preferred date representation for the current locale

-    wxString FormatDate() const { return Format("%x"); }
+    wxString FormatDate() const { return Format(_T("%x")); }

         // preferred time representation for the current locale
         // preferred time representation for the current locale

-    wxString FormatTime() const { return Format("%X"); }
+    wxString FormatTime() const { return Format(_T("%X")); }

 
     // implementation
     // ------------------------------------------------------------------------
 
     // implementation
     // ------------------------------------------------------------------------


@@ -594,28 +782,39 @@ public:
         // get the internal representation
     inline wxLongLong GetValue() const;
 
         // get the internal representation
     inline wxLongLong GetValue() const;
 

-private:

     // a helper function to get the current time_t
     // a helper function to get the current time_t

-    static inline time_t GetTimeNow() { return time((time_t *)NULL); }
+    static time_t GetTimeNow() { return time((time_t *)NULL); }
+
+    // another one to get the current time broken down
+    static struct tm *GetTmNow()
+    {
+        time_t t = GetTimeNow();
+        return localtime(&t);
+    }

 
 

+private:

     // the current country - as it's the same for all program objects (unless
     // the current country - as it's the same for all program objects (unless

-    // it runs on a _really_ big load balancing system), this is a static
-    // member: see SetCountry() and GetCountry()
+    // it runs on a _really_ big cluster system :-), this is a static member:
+    // see SetCountry() and GetCountry()

     static Country ms_country;
 
     static Country ms_country;
 

-    // the internal representation of the time is the amount of milliseconds
-    // elapsed since the origin which is set by convention to the UNIX/C epoch
-    // value: the midnight of on January 1, 1970 (UTC)
-    wxLongLong m_time;
-

     // this constant is used to transform a time_t value to the internal
     // representation, as time_t is in seconds and we use milliseconds it's
     // fixed to 1000
     // this constant is used to transform a time_t value to the internal
     // representation, as time_t is in seconds and we use milliseconds it's
     // fixed to 1000

-    static const int TIME_T_FACTOR;
+    static const unsigned int TIME_T_FACTOR;

 
     // invalid wxDateTime object - returned by all functions which return
     // "wxDateTime &" on failure
     static wxDateTime ms_InvDateTime;
 
     // invalid wxDateTime object - returned by all functions which return
     // "wxDateTime &" on failure
     static wxDateTime ms_InvDateTime;

+
+    // returns TRUE if we fall in range in which we can use standard ANSI C
+    // functions
+    inline bool IsInStdRange() const;
+
+    // the internal representation of the time is the amount of milliseconds
+    // elapsed since the origin which is set by convention to the UNIX/C epoch
+    // value: the midnight of January 1, 1970 (UTC)
+    wxLongLong m_time;

 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------


@@ -623,31 +822,32 @@ private:
 // sense to add it to wxDateTime and it is the result of substraction of 2
 // objects of that class. See also wxDateSpan.
 // ----------------------------------------------------------------------------
 // sense to add it to wxDateTime and it is the result of substraction of 2
 // objects of that class. See also wxDateSpan.
 // ----------------------------------------------------------------------------

+

 class WXDLLEXPORT wxTimeSpan
 {
 public:
     // constructors
     // ------------------------------------------------------------------------
 
 class WXDLLEXPORT wxTimeSpan
 {
 public:
     // constructors
     // ------------------------------------------------------------------------
 

+        // return the timespan for the given number of seconds
+    static wxTimeSpan Seconds(int sec) { return wxTimeSpan(0, 0, sec); }
+
+        // return the timespan for the given number of minutes
+    static wxTimeSpan Minutes(int min) { return wxTimeSpan(0, min, 0 ); }
+
+        // return the timespan for the given number of hours
+    static wxTimeSpan Hours(int hours) { return wxTimeSpan(hours, 0, 0); }
+

         // default ctor constructs the 0 time span
     wxTimeSpan() { }
 
         // from separate values for each component, date set to 0 (hours are
         // not restricted to 0..24 range, neither are minutes, seconds or
         // milliseconds)
         // default ctor constructs the 0 time span
     wxTimeSpan() { }
 
         // from separate values for each component, date set to 0 (hours are
         // not restricted to 0..24 range, neither are minutes, seconds or
         // milliseconds)

-    wxTimeSpan(int hours,
-               int minutes = 0,
-               int seconds = 0,
-               int milliseconds = 0);
-        // from separate values for each component with explicit date (none of
-        // the parameters isn't restricted to any range)
-    wxTimeSpan(int years,
-               int months,
-               int days,
-               int hours = 0,
-               int minutes = 0,
-               int seconds = 0,
-               int milliseconds = 0);
+    inline wxTimeSpan(int hours,
+                      int minutes = 0,
+                      int seconds = 0,
+                      int milliseconds = 0);

 
         // from internal representation
     wxTimeSpan(wxLongLong diff) : m_diff(diff) { }
 
         // from internal representation
     wxTimeSpan(wxLongLong diff) : m_diff(diff) { }


@@ -663,15 +863,11 @@ public:
     inline wxTimeSpan& Add(const wxTimeSpan& diff);
         // add two timespans together
     wxTimeSpan& operator+=(const wxTimeSpan& diff) { return Add(diff); }
     inline wxTimeSpan& Add(const wxTimeSpan& diff);
         // add two timespans together
     wxTimeSpan& operator+=(const wxTimeSpan& diff) { return Add(diff); }

-        // add two timespans together
-    inline wxTimeSpan operator+(const wxTimeSpan& ts1, const wxTimeSpan& ts2);

 
         // substract another timespan
     inline wxTimeSpan& Substract(const wxTimeSpan& diff);
         // substract another timespan
     wxTimeSpan& operator-=(const wxTimeSpan& diff) { return Substract(diff); }
 
         // substract another timespan
     inline wxTimeSpan& Substract(const wxTimeSpan& diff);
         // substract another timespan
     wxTimeSpan& operator-=(const wxTimeSpan& diff) { return Substract(diff); }

-        // substract two timespans
-    inline wxTimeSpan operator-(const wxTimeSpan& ts1, const wxTimeSpan& ts2);

 
         // multiply timespan by a scalar
     inline wxTimeSpan& Multiply(int n);
 
         // multiply timespan by a scalar
     inline wxTimeSpan& Multiply(int n);


@@ -681,7 +877,7 @@ public:
     inline wxTimeSpan operator*(int n) const;
 
         // return this timespan with inversed sign
     inline wxTimeSpan operator*(int n) const;
 
         // return this timespan with inversed sign

-    wxTimeSpan Negate() { return wxTimeSpan(-GetValue()); }
+    wxTimeSpan Negate() const { return wxTimeSpan(-GetValue()); }

         // negate the value of the timespan
     wxTimeSpan& Neg() { m_diff = -GetValue(); return *this; }
         // negate the value of the timespan
         // negate the value of the timespan
     wxTimeSpan& Neg() { m_diff = -GetValue(); return *this; }
         // negate the value of the timespan


@@ -698,15 +894,15 @@ public:
     // ------------------------------------------------------------------------
 
         // is the timespan null?
     // ------------------------------------------------------------------------
 
         // is the timespan null?

-    bool IsNull() const { return m_diff == 0; }
+    bool IsNull() const { return m_diff == 0l; }

         // returns true if the timespan is null
     bool operator!() const { return !IsNull(); }
 
         // is the timespan positive?
         // returns true if the timespan is null
     bool operator!() const { return !IsNull(); }
 
         // is the timespan positive?

-    bool IsPositive() const { return m_diff > 0; }
+    bool IsPositive() const { return m_diff > 0l; }

 
         // is the timespan negative?
 
         // is the timespan negative?

-    bool IsNegative() const { return m_diff < 0; }
+    bool IsNegative() const { return m_diff < 0l; }

 
         // are two timespans equal?
     inline bool IsEqualTo(const wxTimeSpan& ts) const;
 
         // are two timespans equal?
     inline bool IsEqualTo(const wxTimeSpan& ts) const;


@@ -719,16 +915,9 @@ public:
         // timespans are equal in absolute value.
     bool IsShorterThan(const wxTimeSpan& t) const { return !IsLongerThan(t); }
 
         // timespans are equal in absolute value.
     bool IsShorterThan(const wxTimeSpan& t) const { return !IsLongerThan(t); }
 

-    // breaking into years, ..., days, ..., seconds: all these functions
-    // behave like GetYears() which returns 1 for the timespan of 1 year and 1
-    // day, but 0 (and not -1) for the negative timespan of 1 year without 1
-    // day. IOW, (ts - wxTimeSpan(ts.GetYears())).GetYears() is always 0.
+    // breaking into days, hours, minutes and seconds

     // ------------------------------------------------------------------------
 
     // ------------------------------------------------------------------------
 

-        // get the max number of years in this timespan
-    inline int GetYears() const;
-        // get the max number of months in this timespan
-    inline int GetMonths() const;

         // get the max number of weeks in this timespan
     inline int GetWeeks() const;
         // get the max number of days in this timespan
         // get the max number of weeks in this timespan
     inline int GetWeeks() const;
         // get the max number of days in this timespan


@@ -738,9 +927,9 @@ public:
         // get the max number of minutes in this timespan
     inline int GetMinutes() const;
         // get the max number of seconds in this timespan
         // get the max number of minutes in this timespan
     inline int GetMinutes() const;
         // get the max number of seconds in this timespan

-    inline int GetSeconds() const;
+    inline wxLongLong GetSeconds() const;

         // get the number of milliseconds in this timespan
         // get the number of milliseconds in this timespan

-    int GetMilliseconds() const { return m_diff; }
+    wxLongLong GetMilliseconds() const { return m_diff; }

 
     // conversion to text
     // ------------------------------------------------------------------------
 
     // conversion to text
     // ------------------------------------------------------------------------


@@ -751,11 +940,11 @@ public:
         // resulting text representation. Notice that only some of format
         // specifiers valid for wxDateTime are valid for wxTimeSpan: hours,
         // minutes and seconds make sense, but not "PM/AM" string for example.
         // resulting text representation. Notice that only some of format
         // specifiers valid for wxDateTime are valid for wxTimeSpan: hours,
         // minutes and seconds make sense, but not "PM/AM" string for example.

-    wxString Format(const char *format = "%c") const;
+    wxString Format(const wxChar *format = _T("%c")) const;

         // preferred date representation for the current locale
         // preferred date representation for the current locale

-    wxString FormatDate() const { return Format("%x"); }
+    wxString FormatDate() const { return Format(_T("%x")); }

         // preferred time representation for the current locale
         // preferred time representation for the current locale

-    wxString FormatTime() const { return Format("%X"); }
+    wxString FormatTime() const { return Format(_T("%X")); }

 
     // implementation
     // ------------------------------------------------------------------------
 
     // implementation
     // ------------------------------------------------------------------------


@@ -791,6 +980,7 @@ private:
 // class: wxTimeSpan will do the job because there are no subtleties
 // associated with those.
 // ----------------------------------------------------------------------------
 // class: wxTimeSpan will do the job because there are no subtleties
 // associated with those.
 // ----------------------------------------------------------------------------

+

 class WXDLLEXPORT wxDateSpan
 {
 public:
 class WXDLLEXPORT wxDateSpan
 {
 public:


@@ -798,7 +988,25 @@ public:
     // ------------------------------------------------------------------------
 
         // this many years/months/weeks/days
     // ------------------------------------------------------------------------
 
         // this many years/months/weeks/days

-    wxDateSpan(int years, int months, int weeks, int days);
+    wxDateSpan(int years = 0, int months = 0, int weeks = 0, int days = 0)
+    {
+        m_years = years;
+        m_months = months;
+        m_weeks = weeks;
+        m_days = days;
+    }
+
+        // get an object for the given number of days
+    static wxDateSpan Days(int days) { return wxDateSpan(0, 0, 0, days); }
+
+        // get an object for the given number of weeks
+    static wxDateSpan Weeks(int weeks) { return wxDateSpan(0, 0, weeks, 0); }
+
+        // get an object for the given number of months
+    static wxDateSpan Months(int mon) { return wxDateSpan(0, mon, 0, 0); }
+
+        // get an object for the given number of years
+    static wxDateSpan Years(int years) { return wxDateSpan(years, 0, 0, 0); }

 
         // default copy ctor is ok
 
 
         // default copy ctor is ok
 


@@ -808,13 +1016,13 @@ public:
     // ------------------------------------------------------------------------
 
         // set number of years
     // ------------------------------------------------------------------------
 
         // set number of years

-    wxDateSpan& SetYears(int n) { m_years = n; return this; }
+    wxDateSpan& SetYears(int n) { m_years = n; return *this; }

         // set number of months
         // set number of months

-    wxDateSpan& SetMonths(int n) { m_months = n; return this; }
+    wxDateSpan& SetMonths(int n) { m_months = n; return *this; }

         // set number of weeks
         // set number of weeks

-    wxDateSpan& SetWeeks(int n) { m_weeks = n; return this; }
+    wxDateSpan& SetWeeks(int n) { m_weeks = n; return *this; }

         // set number of days
         // set number of days

-    wxDateSpan& SetDays(int n) { m_days = n; return this; }
+    wxDateSpan& SetDays(int n) { m_days = n; return *this; }

 
         // get number of years
     int GetYears() const { return m_years; }
 
         // get number of years
     int GetYears() const { return m_years; }


@@ -862,6 +1070,23 @@ WXDLLEXPORT_DATA(extern wxDateSpan) wxMonth;
 WXDLLEXPORT_DATA(extern wxDateSpan) wxWeek;
 WXDLLEXPORT_DATA(extern wxDateSpan) wxDay;
 
 WXDLLEXPORT_DATA(extern wxDateSpan) wxWeek;
 WXDLLEXPORT_DATA(extern wxDateSpan) wxDay;
 

+// ============================================================================
+// inline functions implementation
+// ============================================================================
+
+// don't include inline functions definitions when we're included from anything
+// else than datetime.cpp in debug builds: this minimizes rebuilds if we change
+// some inline function and the performance doesn't matter in the debug builds.
+
+#if !defined(__WXDEBUG__) || defined(wxDEFINE_TIME_CONSTANTS)
+    #define INCLUDED_FROM_WX_DATETIME_H
+        #include "wx/datetime.inl"
+    #undef INCLUDED_FROM_WX_DATETIME_H
+#endif
+
+// if we defined it to be empty above, restore it now
+#undef inline
+

 // ============================================================================
 // binary operators
 // ============================================================================
 // ============================================================================
 // binary operators
 // ============================================================================


@@ -874,42 +1099,42 @@ inline bool WXDLLEXPORT operator<(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() < t2.GetValue()
+    return t1.GetValue() < t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator<=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 }
 
 inline bool WXDLLEXPORT operator<=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() <= t2.GetValue()
+    return t1.GetValue() <= t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator>(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 }
 
 inline bool WXDLLEXPORT operator>(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() > t2.GetValue()
+    return t1.GetValue() > t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator>=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 }
 
 inline bool WXDLLEXPORT operator>=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() >= t2.GetValue()
+    return t1.GetValue() >= t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator==(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 }
 
 inline bool WXDLLEXPORT operator==(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() == t2.GetValue()
+    return t1.GetValue() == t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator!=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 
 }
 
 inline bool WXDLLEXPORT operator!=(const wxDateTime &t1, const wxDateTime &t2)
 {
     wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" );
 

-    return t1.GetValue() != t2.GetValue()
+    return t1.GetValue() != t2.GetValue();

 }
 
 inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime &t1,
 }
 
 inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime &t1,


@@ -924,29 +1149,41 @@ inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime &t1,
 // wxTimeSpan operators
 // ----------------------------------------------------------------------------
 
 // wxTimeSpan operators
 // ----------------------------------------------------------------------------
 

+inline wxTimeSpan WXDLLEXPORT operator+(const wxTimeSpan& ts1,
+                                        const wxTimeSpan& ts2)
+{
+    return wxTimeSpan(ts1.GetValue() + ts2.GetValue());
+}
+
+inline wxTimeSpan WXDLLEXPORT operator-(const wxTimeSpan& ts1,
+                                        const wxTimeSpan& ts2)
+{
+    return wxTimeSpan(ts1.GetValue() - ts2.GetValue());
+}
+

 inline bool WXDLLEXPORT operator<(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {
 inline bool WXDLLEXPORT operator<(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {

-    return t1.GetValue() < t2.GetValue()
+    return t1.GetValue() < t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator<=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {
 }
 
 inline bool WXDLLEXPORT operator<=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {

-    return t1.GetValue() <= t2.GetValue()
+    return t1.GetValue() <= t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator>(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {
 }
 
 inline bool WXDLLEXPORT operator>(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {

-    return t1.GetValue() > t2.GetValue()
+    return t1.GetValue() > t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator>=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {
 }
 
 inline bool WXDLLEXPORT operator>=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {

-    return t1.GetValue() >= t2.GetValue()
+    return t1.GetValue() >= t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator==(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {
 }
 
 inline bool WXDLLEXPORT operator==(const wxTimeSpan &t1, const wxTimeSpan &t2)
 {

-    return t1.GetValue() == t2.GetValue()
+    return t1.GetValue() == t2.GetValue();

 }
 
 inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 }
 
 inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2)


@@ -961,188 +1198,10 @@ inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& rt1,
                                         const wxDateSpan& rt2)
 {
 inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& rt1,
                                         const wxDateSpan& rt2)
 {

-    return wxDateSpan(rt1.m_years + rt2.m_years,
-                      rt1.m_months + rt2.m_months,
-                      rt1.m_weeks + rt2.m_weeks,
-                      rt1.m_days + rt2.m_days);
-}
-
-// ============================================================================
-// inline functions implementation
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// wxDateTime
-// ----------------------------------------------------------------------------
-
-const int wxDateTime::TIME_T_FACTOR = 1000;
-
-wxDateTime& Set(time_t timet)
-{
-    m_time = timet * wxDateTime::TIME_T_FACTOR;
-
-    return *this;
-}
-
-wxDateTime& SetToCurrent()
-{
-    return Set(GetTimeNow());
-}
-
-wxDateTime::wxDateTime(time_t timet)
-{
-    Set(timet);
-}
-
-wxDateTime::wxDateTime(const struct tm& tm)
-{
-    Set(tm);
-}
-
-wxDateTime::wxDateTime(wxDateTime_t hour,
-                       wxDateTime_t minute,
-                       wxDateTime_t second,
-                       wxDateTime_t millisec)
-{
-    Set(hour, minute, second, millisec);
-}
-
-wxDateTime::wxDateTime(wxDateTime_t day,
-                       Month        month,
-                       int          year,
-                       wxDateTime_t hour,
-                       wxDateTime_t minute,
-                       wxDateTime_t second,
-                       wxDateTime_t millisec)
-{
-    Set(day, month, year, hour, minute, second, millisec);
-}
-
-wxLongLong wxDateTime::GetValue() const
-{
-    wxASSERT_MSG( IsValid(), "invalid wxDateTime");
-
-    return m_time;
-}
-
-bool wxDateTime::SetToLastWeekDay(WeekDay weekday,
-                                  wxDateTime_t month,
-                                  int year)
-{
-    SetToWeekDay(weekday, -1, month, year);
-}
-
-wxDateTime& wxDateTime::Substract(const wxTimeSpan& diff)
-{
-    return Add(diff.Negate());
-}
-
-wxDateTime& wxDateTime::operator-=(const wxTimeSpan& diff)
-{
-    return Add(diff.Negate());
-}
-
-wxDateTime& wxDateTime::Substract(const wxDateSpan& diff)
-{
-    return Add(diff.Negate());
-}
-
-wxDateTime& wxDateTime::operator-=(const wxDateSpan& diff)
-{
-    return Add(diff.Negate());
-}
-
-wxTimeSpan wxDateTime::operator-(const wxDateTime& datetime) const
-{
-    return Substract(datetime);
-}
-
-// ----------------------------------------------------------------------------
-// wxTimeSpan
-// ----------------------------------------------------------------------------
-
-wxTimeSpan& wxTimeSpan::Add(const wxTimeSpan& diff)
-{
-    m_diff += diff.GetValue();
-
-    return *this;
-}
-
-wxTimeSpan& wxTimeSpan::Substract(const wxTimeSpan& diff)
-{
-    m_diff -= diff.GetValue();
-
-    return *this;
-}
-
-wxTimeSpan& wxTimeSpan::Multiply(int n)
-{
-    m_diff *= n;
-
-    return *this;
-}
-
-wxTimeSpan wxTimeSpan::operator*(int n) const
-{
-    wxTimeSpan result(*this);
-    result.Multiply(n);
-
-    return result;
-}
-
-wxTimeSpan wxTimeSpan::Abs() const
-{
-    return wxTimeSpan(GetValue().Abs());
-}
-
-bool wxTimeSpan::IsEqualTo(const wxTimeSpan& ts) const
-{
-    return GetValue() == ts.GetValue();
-}
-
-bool wxTimeSpan::IsLongerThan(const wxTimeSpan& ts) const
-{
-    return Abs() > ts.Abs();
-}
-
-// ----------------------------------------------------------------------------
-// wxDateSpan
-// ----------------------------------------------------------------------------
-
-wxDateSpan&
-wxDateSpan::operator+=(const wxDateSpan& other)
-{
-    m_years += other.m_years;
-    m_months += other.m_months;
-    m_weeks += other.m_weeks;
-    m_days += other.m_days;
-
-    return *this;
-}
-
-wxDateSpan& wxDateSpan::operator*=(int factor)
-{
-    m_years *= m_years;
-    m_months *= m_months;
-    m_weeks *= m_weeks;
-    m_days *= m_days;
-
-    return *this;
-}
-
-wxDateSpan Negate() const
-{
-    return wxDateSpan(-m_years, -m_months, -m_weeks, -m_days);
-}
-
-wxDateSpan& Neg()
-{
-    m_years = -m_years;
-    m_months = -m_months;
-    m_weeks = -m_weeks;
-    m_days = -m_days;
-
-    return *this;
+    return wxDateSpan(rt1.GetYears() + rt2.GetYears(),
+                      rt1.GetMonths() + rt2.GetMonths(),
+                      rt1.GetWeeks() + rt2.GetWeeks(),
+                      rt1.GetDays() + rt2.GetDays());

 }
 
 }
 

-#endif // _WX_TIME_H
+#endif // _WX_DATETIME_H