#include <QApplication>
#include <QSystemTrayIcon>
#include <QMenu>
#include <QTimer>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPixmap image = QPixmap(32,32);
    image.fill(Qt::red);
    QMenu menu;
    menu.addAction("Quit",a.quit);
    QSystemTrayIcon tray = QSystemTrayIcon(QIcon(image));
    tray.show();
    tray.setContextMenu(&menu);

    QTimer timer;
    QObject::connect(&timer, &QTimer::timeout, [&]() {
        tray.setVisible(!tray.isVisible());
        qDebug()<<"Tray visibility: "<<tray.isVisible();
    });
    timer.start(3000);
    return a.exec();
}