Qt_5 - 8BitsCoding/RobotMentor GitHub Wiki

다음과 같이 서브클래싱이 가능하다.

// mydialog.h
#pragma once

#include <QtWidgets/qdialog.h>

class MyDialog : public QDialog{
public:
	explicit MyDialog(QDialog* parent = nullptr);
};

// mydialog.cpp
#include "mydialog.h"

MyDialog::MyDialog(QDialog* parent):QDialog(parent) {

}

#include <QtCore/QCoreApplication>
#include <QtWidgets/qapplication.h>
#include "mydialog.h"

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);

	MyDialog* dialog = new MyDialog;
	dialog->show();

	return app.exec();
}

---

이벤트 처리하기

#pragma once

#include <QtWidgets/qdialog.h>

class MyDialog : public QDialog{
	Q_OBJECT
public:
	explicit MyDialog(QDialog* parent = nullptr);

	void closeEvnet(QCloseEvent* event);
};

#include "mydialog.h"
#include <QtWidgets/qmessagebox.h>
#include <QtGui/qevent.h>

MyDialog::MyDialog(QDialog* parent) : QDialog(parent) {

}

void MyDialog::closeEvnet(QCloseEvent* event) {
	QMessageBox::StandardButton yesno = QMessageBox::question(this, "title", "yes or no", QMessageBox::Yes | QMessageBox::No);

	if (yesno == QMessageBox::Yes) {
		event->accept();
	}
	else if (yesno == QMessageBox::No) {
		event->ignore();
	}
}