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Home/ Questions/Q 4535690
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Editorial Team
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Editorial Team
Asked: May 21, 20262026-05-21T14:26:15+00:00 2026-05-21T14:26:15+00:00

At the following web page: http://web.mit.edu/qt-dynamic/www/tutorials-tutorial-t2.html In: QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit())); Why is &

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At the following web page: http://web.mit.edu/qt-dynamic/www/tutorials-tutorial-t2.html

In:

QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit()));

Why is & used with quit and app? Cannot we use quit and app without &?

Thanks.

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  1. Editorial Team
    Editorial Team
    2026-05-21T14:26:15+00:00Added an answer on May 21, 2026 at 2:26 pm

    QObject::connect needs pointers to two objects. So you have to give it that.

    (Since the link you posted is broken, can’t be sure of what quit and app are.)

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