Revision control
++ // Copyright (C) 2023 Samuel Gaist <samuel.gaist@edeltech.ch>
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ //! [QApplication subclass]
++ #include <QApplication>
++ #include <QDebug>
++ #include <QFile>
++ #include <QFileOpenEvent>
++ #include <QPushButton>
++
++ class MyApplication : public QApplication
++ {
++ public:
++ MyApplication(int &argc, char **argv)
++ : QApplication(argc, argv)
++ {
++ }
++
++ bool event(QEvent *event) override
++ {
++ if (event->type() == QEvent::FileOpen) {
++ QFileOpenEvent *openEvent = static_cast<QFileOpenEvent *>(event);
++ const QUrl url = openEvent->url();
++ if (url.isLocalFile()) {
++ QFile localFile(url.toLocalFile());
++ // read from local file
++ } else if (url.isValid()) {
++ // process according to the URL's schema
++ } else {
++ // parse openEvent->file()
++ }
++ }
++
++ return QApplication::event(event);
++ }
++ };
++ //! [QApplication subclass]
++
++ int main(int argc, char *argv[])
++ {
++ MyApplication app(argc, argv);
++ QPushButton closeButton("Quit");
++ QObject::connect(&closeButton, &QPushButton::clicked, &app, &QApplication::quit);
++ closeButton.show();
++ return app.exec();
++ }