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how to download multi files in same time with multi Progress bar

  • hi
    how to download multi files in same time & each download have a Progress bar

  • Moderators

    Here's an example you can use as a starting point:

    #include <QApplication>
    #include <QProgressBar>
    #include <QNetworkAccessManager>
    #include <QNetworkRequest>
    #include <QNetworkReply>
    int main(int argc, char *argv[]) {
        QApplication a(argc, argv);
        QNetworkAccessManager nam;
        for( int i=0; i < 3; ++i) {
            auto reply = nam.get(QNetworkRequest(QUrl("http://whatever")));
            auto progress = new QProgressBar();
            progress->move(100, 100 * i);
            QObject::connect(reply, &QNetworkReply::finished, progress, &QProgressBar::deleteLater);
            QObject::connect(reply, &QNetworkReply::downloadProgress, [=](qint64 bytes, qint64 total){
                progress->setRange(0, total);
        return a.exec();

    You can of course put the bars in some layout of some other widget, but I hope you get the idea.

  • @Chris-Kawa thank you but i don't know how to use this code in my project :
    download is in class downloader.cpp
    Please help me i have no idea to do this.

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