main.cpp Example File

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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
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  #include "data.h"

  #include <QtWidgets/QApplication>
  #include <QtWidgets/QWidget>
  #include <QtWidgets/QHBoxLayout>
  #include <QtWidgets/QVBoxLayout>
  #include <QtWidgets/QCommandLinkButton>
  #include <QtWidgets/QMessageBox>

  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);
      Q3DScatter *graph = new Q3DScatter();
      QWidget *container = QWidget::createWindowContainer(graph);

      if (!graph->hasContext()) {
          QMessageBox msgBox;
          msgBox.setText("Couldn't initialize the OpenGL context.");
          msgBox.exec();
          return -1;
      }

      container->setMinimumSize(800, 600);
      container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
      container->setFocusPolicy(Qt::StrongFocus);

      QWidget *widget = new QWidget;
      QHBoxLayout *hLayout = new QHBoxLayout(widget);
      QVBoxLayout *vLayout = new QVBoxLayout();
      hLayout->addWidget(container, 1);
      hLayout->addLayout(vLayout);

      QCommandLinkButton *rangeButton = new QCommandLinkButton(widget);
      rangeButton->setText(QStringLiteral("Toggle axis ranges"));
      rangeButton->setDescription(QStringLiteral("Switch between automatic axis ranges and preset ranges"));
      rangeButton->setIconSize(QSize(0, 0));

      vLayout->addWidget(rangeButton, 1, Qt::AlignTop);

      widget->setWindowTitle(QStringLiteral("Input Handling for Axes"));

      Data *graphData = new Data(graph);

      QObject::connect(rangeButton, &QCommandLinkButton::clicked, graphData, &Data::toggleRanges);

      widget->show();
      return app.exec();
  }