'why qt application always new widgets instead of on stack?

there. I've seen this example from qt: https://doc.qt.io/qt-5/qtwidgets-widgets-calculator-example.html, and wonder why qt always create widgets with new instead of allocating on stack

Button *Calculator::createButton(const QString &text, const char *member)
{
    Button *button = new Button(text);
    connect(button, SIGNAL(clicked()), this, member);
    return button;
}

create widget on stack is faster, and in this question: QT-specific difference of stack vs. heap attributes? Mike's answer says that create on stack is perfectly fine, but why official documents use new mostly?

c++qt


Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source

Related Questions