main.cpp Example File | Qt Data Visualization 5.9

Qt 5.9 | Qt Data Visualization | Axis Range Dragging With Labels Example | main.cpp Example File

Qt 5.9.2 Reference Documentation

# main.cpp Example File

draggableaxes/main.cpp

      /****************************************************************************
      **
      ** 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();
      }