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3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
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6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
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29
30#ifndef MAINWIDGET_H
31#define MAINWIDGET_H
32
33#include <QtCharts/QChartGlobal>
34#include <QtCharts/QChart>
35#include <QtCharts/QChartView>
36#include <QtWidgets/QWidget>
37#include <QtWidgets/QGraphicsWidget>
38#include <QtWidgets/QGridLayout>
39#include <QtWidgets/QGraphicsGridLayout>
40#include <QtWidgets/QDoubleSpinBox>
41#include <QtWidgets/QGroupBox>
42#include <QtCharts/QLineSeries>
43
44QT_CHARTS_USE_NAMESPACE
45
46class MainWidget : public QWidget
47{
48 Q_OBJECT
49public:
50 explicit MainWidget(QWidget *parent = 0);
51
52public slots:
53 void addSeries();
54 void removeSeries();
55 void connectMarkers();
56 void disconnectMarkers();
57
58 void handleMarkerClicked();
59
60private:
61
62 QChart *m_chart;
63 QList<QLineSeries *> m_series;
64
65 QChartView *m_chartView;
66 QGridLayout *m_mainLayout;
67 QGridLayout *m_fontLayout;
68
69};
70
71#endif // MAINWIDGET_H
72

source code of qtcharts/examples/charts/legendmarkers/mainwidget.h