capture-shared-pointer.cpp

#include <QtCore>

#include <memory>

int main(int argc, char** argv)
{
    QCoreApplication app(argc, argv);
    auto p = std::make_shared<int>(42);
    auto t = new QTimer;
    t->setSingleShot(true);
    t->start(500);
    QObject::connect(t, &QTimer::timeout, [p]() {
        qDebug() << *p;
        qApp->quit();
    });
    app.exec();
}