Qt_IM_1 - 8BitsCoding/RobotMentor GitHub Wiki

// test.h
#pragma once

#include <qobject.h>
#include <qdebug.h>

class test : public QObject
{
	Q_OBJECT
public:
	explicit test(QObject* parent = nullptr);
	virtual ~test();

	void makeChild(QString name);

signals:
public slots:
};

// test.cpp
#include "test.h"

test::test(QObject* parent) : QObject(parent)
{
	qInfo() << this << "Constructed";
}

test::~test()
{
	qInfo() << this << "Deconstructed";
}

void test::makeChild(QString name)
{
	test* child = new test(this);
	child->setObjectName(name);
}

#include <QtCore/QCoreApplication>
#include "test.h"

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);
	
	test* p = new test(&a);

	p->setObjectName("parent");

	for (int i = 0; i < 5; i++) {
		p->makeChild(QString::number(i));
	}

	return a.exec();
}

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);

	test* p = new test(nullptr);

	p->setObjectName("parent");

	for (int i = 0; i < 5; i++) {
		p->makeChild(QString::number(i));
	}

	delete p;

	return a.exec();
}