Qwt User's Guide  6.1.6
qwt_system_clock.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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 
33 class QWT_EXPORT QwtSystemClock
34 {
35 public:
37  virtual ~QwtSystemClock();
38 
39  bool isNull() const;
40 
41  void start();
42  double restart();
43  double elapsed() const;
44 
45 private:
46  class PrivateData;
47  PrivateData *d_data;
48 };
49 
50 #endif
QwtSystemClock
QwtSystemClock provides high resolution clock time functions.
Definition: qwt_system_clock.h:34