#include <QApplication>
#include <QFileDialog>
#include <QTimer>

using namespace std::chrono_literals;

int main(int argc, char *argv[]) {
  qputenv("QT_QPA_PLATFORMTHEME", "xdgdesktopportal");

  QApplication a(argc, argv);

  QTimer::singleShot(0, [] {
    auto *dialog = new QFileDialog();
    dialog->setAttribute(Qt::WA_DeleteOnClose);
    dialog->setFileMode(QFileDialog::ExistingFile);
    dialog->show();

    QTimer::singleShot(1s, dialog, [=] {
      dialog->hide();

      QTimer::singleShot(1s, dialog, [=] { dialog->show(); });
    });
  });

  return a.exec();
}