+#if wxUSE_STD_IOSTREAM
+ friend wxSTD ostream WXDLLEXPORT & operator <<(wxSTD ostream &os, const wxDate &dt)
+ { return os << dt.FormatDate().mb_str(); }
+#endif
+
+ void SetFormat(int format) { m_displayFormat = format; }
+ int SetOption(int option, bool enable = TRUE)
+ {
+ if ( enable )
+ m_displayOptions |= option;
+ else
+ m_displayOptions &= ~option;
+
+ return 1; // (VZ: whatever it means)
+ }
+
+ // returns julian date (VZ: the integral part of Julian Day Number)
+ long GetJulianDate() const
+ { return (long)(m_date.GetJulianDayNumber() - 0.5); }
+
+ // returns relative date since Jan. 1
+ int GetDayOfYear() const
+ { return m_date.GetDayOfYear(); }
+
+ // returns TRUE if leap year, FALSE if not
+ bool IsLeapYear() const
+ { return wxDateTime::IsLeapYear(m_date.GetYear()); }
+
+ // Sets to current system date
+ wxDate &Set()
+ { m_date = wxDateTime::Today(); return (wxDate&)*this; }
+ wxDate &Set(long lJulian)
+ { m_date.Set((double)(lJulian + 0.5)); return (wxDate&)*this; }
+ wxDate &Set(int nMonth, int nDay, int nYear)
+ { m_date.Set(nDay, (wxDateTime::Month)nMonth, nYear); return *this; }