How to play gif in qt cpp?

Question

I want to show a gif on the screen until an action is finished. As far as I understand from the examples, I tried something like this, but the gif does not appear on the screen. How can I do that?

QMovie *movie=new QMovie(":/images/loading.gif");
    if (!movie->isValid())
        {
         qDebug()<<"Movie is not valid";
        }

    // Play GIF
    QLabel *label = new QLabel(this);

    label->setMovie(movie);
    movie->start();

Answer 1

You need an event loop. Bracket your code with a QApplication creation and exec...

QApplication app(argc, argv);
QMovie movie(":/images/loading.gif");
if (!movie.isValid()) {
    qDebug() << "Movie is not valid";
}

// Play GIF
QLabel label;

label.setMovie(&movie);
movie.start();
app.exec();