Qt_3 - 8BitsCoding/RobotMentor GitHub Wiki

#include <QtWidgets/qapplication.h>
#include <QtWidgets/QPushButton>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPushButton button("Hellow World");
    button.show();

    return a.exec();
}

#include <QtWidgets/qapplication.h> // for qapplication
#include <QtWidgets/QPushButton>    // for pushbutton
#include <QObject>                  // for connect

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPushButton button("Close");
    //QObject::connect(sender, SIGNAL, receiver, SLOT);
    QObject::connect(&button, SIGNAL(clicked(bool)), &a, SLOT(quit()));

    button.show();

    return a.exec();
}