====== HelloWorld ======


===== Root widget on the stack =====
<file cpp-qt main.cpp>
// main.cpp

#include <QApplication>
#include <QLabel>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);         // create a QApplication (on the stack)
    
    QLabel label("Nice to meet you.");  // root widget (on the stack)
    label.show();                       // show it

    return a.exec();                    // start the event loop
}

</file>

===== Root widget on the heap =====
<file cpp-qt main.cpp>
// main.cpp

#include <QApplication>
#include <QLabel>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);         // create a QApplication (on the stack)
    
    QLabel* label = new QLabel("I'm on the heap!");
    label->show();

    return a.exec();                    // start the event loop
}

</file>