Консольное приложение с сигналами и слотами - C++ Qt - Ответ 13166714

#include "main.moc"

// main.cpp
#include <QtCore>
 
class Task : public QObject
{
    Q_OBJECT
public:
    Task(QObject *parent = 0) : QObject(parent) {}
 
public slots:
    void run()
    {
        // Do processing here
 
        emit finished();
    }
 
signals:
    void finished();
};
 
#include "main.moc"
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    // Task parented to the application so that it
    // will be deleted by the application.
    Task *task = new Task(&a);
 
    // This will cause the application to exit when
    // the task signals finished.    
    QObject::connect(task, SIGNAL(finished()), &a, SLOT(quit()));
 
    // This will run the task from the application event loop.
    QTimer::singleShot(0, task, SLOT(run()));
 
    return a.exec();
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    printf("Hello world!\n");
 
    QTimer::singleShot(0, &a, SLOT(quit()));
 
    return a.exec();
}