Qwt User's Guide 6.1.0

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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
30 class QWT_EXPORT QwtSystemClock
31 {
32 public:
33 QwtSystemClock();
34 virtual ~QwtSystemClock();
35
36 bool isNull() const;
37
38 void start();
39 double restart();
40 double elapsed() const;
41
42 private:
43 class PrivateData;
44 PrivateData *d_data;
45 };
46
47 #endif