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Qt Toolkit - qdatetime.h include file
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<h1 align=center>qdatetime.h</h1><br clear="all">
This is the verbatim text of the qdatetime.h include file.  It is
provided only for illustration; the copyright
remains with Trolltech.
<hr>
<pre>
/****************************************************************************
** &#36;Id&#58; qt/src/tools/qdatetime.h   2.3.2   edited 2001-01-26 $
**
** Definition of date and time classes
**
** Created : 940124
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QDATETIME_H
#define QDATETIME_H

#ifndef QT_H
#include "qstring.h"
#endif // QT_H


/*****************************************************************************
  QDate class
 *****************************************************************************/

class Q_EXPORT <a href="qdate.html">QDate</a>
{
public:
    QDate()  { jd=0; }                          // set null date
    QDate( int y, int m, int d );               // set date

    bool   isNull()      const { return jd == 0; }
    bool   isValid()     const;                 // valid date

    int    year()        const;                 // 1752..
    int    month()       const;                 // 1..12
    int    day()         const;                 // 1..31
    int    dayOfWeek()   const;                 // 1..7 (monday==1)
    int    dayOfYear()   const;                 // 1..365
    int    daysInMonth() const;                 // 28..31
    int    daysInYear()  const;                 // 365 or 366

    virtual QString monthName( int month ) const;
    virtual QString dayName( int weekday ) const;

    QString toString()   const;

    bool   setYMD( int y, int m, int d );

    QDate  addDays( int days )          const;
    int    daysTo( const QDate &amp; )      const;

    bool   operator==( const QDate &amp;d ) const { return jd == d.jd; }
    bool   operator!=( const QDate &amp;d ) const { return jd != d.jd; }
    bool   operator&lt;( const QDate &amp;d )  const { return jd &lt; d.jd; }
    bool   operator&lt;=( const QDate &amp;d ) const { return jd &lt;= d.jd; }
    bool   operator&gt;( const QDate &amp;d )  const { return jd &gt; d.jd; }
    bool   operator&gt;=( const QDate &amp;d ) const { return jd &gt;= d.jd; }

    static QDate currentDate();
    static bool  isValid( int y, int m, int d );
    static bool  leapYear( int year );

protected:
    static uint  greg2jul( int y, int m, int d );
    static void  jul2greg( uint jd, int &amp;y, int &amp;m, int &amp;d );
private:
    static const char * const monthNames[];
    static const char * const weekdayNames[];
    uint         jd;
    friend class QDateTime;
#ifndef QT_NO_DATASTREAM
    friend Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QDate &amp; );
    friend Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QDate &amp; );
#endif
};


/*****************************************************************************
  QTime class
 *****************************************************************************/

class Q_EXPORT <a href="qtime.html">QTime</a>
{
public:
    QTime() { ds=0; }                           // set null time
    QTime( int h, int m, int s=0, int ms=0 );   // set time

    bool   isNull()      const { return ds == 0; }
    bool   isValid()     const;                 // valid time

    int    hour()        const;                 // 0..23
    int    minute()      const;                 // 0..59
    int    second()      const;                 // 0..59
    int    msec()        const;                 // 0..999

    QString toString()   const;

    bool   setHMS( int h, int m, int s, int ms=0 );

    QTime  addSecs( int secs )          const;
    int    secsTo( const QTime &amp; )      const;
    QTime  addMSecs( int ms )           const;
    int    msecsTo( const QTime &amp; )     const;

    bool   operator==( const QTime &amp;d ) const { return ds == d.ds; }
    bool   operator!=( const QTime &amp;d ) const { return ds != d.ds; }
    bool   operator&lt;( const QTime &amp;d )  const { return ds &lt; d.ds; }
    bool   operator&lt;=( const QTime &amp;d ) const { return ds &lt;= d.ds; }
    bool   operator&gt;( const QTime &amp;d )  const { return ds &gt; d.ds; }
    bool   operator&gt;=( const QTime &amp;d ) const { return ds &gt;= d.ds; }

    static QTime currentTime();
    static bool  isValid( int h, int m, int s, int ms=0 );

    void   start();
    int    restart();
    int    elapsed();

private:
    static bool currentTime( QTime * );

    uint   ds;
    friend class QDateTime;
#ifndef QT_NO_DATASTREAM
    friend Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QTime &amp; );
    friend Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QTime &amp; );
#endif
};


/*****************************************************************************
  QDateTime class
 *****************************************************************************/

class Q_EXPORT <a href="qdatetime.html">QDateTime</a>
{
public:
    QDateTime() {}                              // set null date and null time
    QDateTime( const QDate &amp; );
    QDateTime( const QDate &amp;, const QTime &amp; );

    bool   isNull()     const           { return d.isNull() &amp;&amp; t.isNull(); }
    bool   isValid()    const           { return d.isValid() &amp;&amp; t.isValid(); }

    QDate  date()       const           { return d; }
    QTime  time()       const           { return t; }
    void   setDate( const QDate &amp;date ) { d=date; }
    void   setTime( const QTime &amp;time ) { t=time; }
    void   setTime_t( uint secsSince1Jan1970UTC );

    QString toString()  const;

    QDateTime addDays( int days )       const;
    QDateTime addSecs( int secs )       const;
    int    daysTo( const QDateTime &amp; )  const;
    int    secsTo( const QDateTime &amp; )  const;

    bool   operator==( const QDateTime &amp;dt ) const;
    bool   operator!=( const QDateTime &amp;dt ) const;
    bool   operator&lt;( const QDateTime &amp;dt )  const;
    bool   operator&lt;=( const QDateTime &amp;dt ) const;
    bool   operator&gt;( const QDateTime &amp;dt )  const;
    bool   operator&gt;=( const QDateTime &amp;dt ) const;

    static QDateTime currentDateTime();

private:
    QDate  d;
    QTime  t;
#ifndef QT_NO_DATASTREAM
    friend Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QDateTime &amp;);
    friend Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QDateTime &amp; );
#endif
};


/*****************************************************************************
  Date and time stream functions
 *****************************************************************************/

#ifndef QT_NO_DATASTREAM
Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QDate &amp; );
Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QDate &amp; );
Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QTime &amp; );
Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QTime &amp; );
Q_EXPORT QDataStream &amp;operator&lt;&lt;( QDataStream &amp;, const QDateTime &amp; );
Q_EXPORT QDataStream &amp;operator&gt;&gt;( QDataStream &amp;, QDateTime &amp; );
#endif // QT_NO_DATASTREAM

#endif // QDATETIME_H

</pre>
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<td>Copyright  2001 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
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