QT 5.5. Why does the application close when the ActiveX terminates?

Question

Qt

We have a program written in QT 5.5. In application mode it works fine, in COM server mode it works fine. But if we need to connect to an already running application via ActiveX and perform some operations (for example, reading a variable), then after the script is completed, the windows garbage collector will take the application with it. How to deal with it?
main.cpp

#include "mainwindow.h"
#include <QApplication>
#include "server.h"
#include "scales.h"
#include <QAxFactory>


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    scales appobject(0);


    QAxFactory::startServer();
    QAxFactory::registerActiveObject(&appobject);


    return a.exec();
}

scales.h

#ifndef SCALES_H
#define SCALES_H
#include <QAxFactory>
#include "server.h"


class scales: public QObject
{
    Q_OBJECT

    Q_CLASSINFO("ClassID", "{2b5775cd-72c2-43da-bc3b-b0e8d1e1cdf2}")
    Q_CLASSINFO("InterfaceID", "{2ce1761e-07a3-415c-bd11-b0e8d1e1cdf2}")
    Q_CLASSINFO("EventID","{52e8e1eb-ccee-4ae6-9b86-c82d11f606d1}")
    Q_PROPERTY(QString num READ num)
public:
    scales(QObject *parent = 0);
    QString num()  {  return "greate";}
};

#endif // SCALES_H

scales.cpp

#include "scales.h"

scales::scales(QObject *parent): QObject(parent)
{

}

QAXFACTORY_BEGIN("{edd3e836-f537-4c6f-be7d-6014c155cc7a}", "{b7da3de8-83bb-4bbe-9ab7-99a05819e201}")
   QAXCLASS(scales)
QAXFACTORY_END()

Answer 1

Failed to overcome, switched to sockets