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main.cpp
50 lines | 1.3 KiB | text/x-c | CppLexer
#include <QtGui/QApplication>
#include <QMainWindow>
#include <qchartglobal.h>
#include <qchartview.h>
#include <qscatterseries.h>
QTCOMMERCIALCHART_USE_NAMESPACE
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
//! [1]
// Create chart view
QChartView *chartView = new QChartView();
chartView->setRenderHint(QPainter::Antialiasing);
// Add scatter series with linear test data with random "noise"
QScatterSeries *scatter = new QScatterSeries();
for (qreal i(0.0); i < 20; i += 0.5) {
qreal x = i + (qreal)(rand() % 100) / 100.0;
qreal y = i + (qreal)(rand() % 100) / 100.0;
(*scatter) << QPointF(x, y);
}
// Chart takes ownership
chartView->addSeries(scatter);
//! [1]
// And more
//! [2]
*scatter << QPointF(2.0, 5.5) << QPointF(2.2, 5.4);
//! [2]
//! [3]
QBrush brush(QColor(255, 0, 0, 80), Qt::SolidPattern);
scatter->setBrush(brush);
QPen pen(QColor(0, 255, 0, 60), 3);
scatter->setPen(pen);
scatter->setShape(QScatterSeries::MarkerShapeRectangle);
scatter->setSize(25.0);
//! [3]
// Use the chart widget as the central widget
QMainWindow w;
w.resize(400, 300);
w.setCentralWidget(chartView);
w.setWindowFlags(Qt::FramelessWindowHint);
w.show();
return a.exec();
}