Qwt User's Guide  6.2.0
qwt_system_clock.h
1 /******************************************************************************
2  * Qwt Widget Library
3  * Copyright (C) 1997 Josef Wilgen
4  * Copyright (C) 2002 Uwe Rathmann
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the Qwt License, Version 1.0
8  *****************************************************************************/
9 
10 #ifndef QWT_SYSTEM_CLOCK_H
11 #define QWT_SYSTEM_CLOCK_H
12 
13 #include "qwt_global.h"
14 #include <qelapsedtimer.h>
15 
24 class QWT_EXPORT QwtSystemClock
25 {
26  public:
27  bool isNull() const;
28 
29  void start();
30  double restart();
31  double elapsed() const;
32 
33  private:
34  QElapsedTimer m_timer;
35 };
36 
37 #endif
QwtSystemClock provides high resolution clock time functions.