SIGNAL in QNetworkReply error - SOLVED -

[monillo]

Hello everybody:

In a small app that download a file from a url, I have this code:

MyClasse.h

...
...
private slots:
    void downloadProgressShow(quint64 bytesRead, quint64 bytesTotal);
    ...
    ...

...
...
private slots:
    void downloadProgressShow(quint64 bytesRead, quint64 bytesTotal);
    ...
    ...

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myclasse.cpp

...
...
void MyClasse::on_btnDownload_clicked() 
{
   ...
   QNetworkAccessManager *manager = new QNetworkAccessMananger(this);
   QNetworkReply *reply = manager->get(QNetworkRequest(QUrl("http://www .....")));
   // --- Show the progress.
   connect(reply,SIGNAL(downloadProgress(qint64,qint64)),this,SLOT(downloadProgressShow(qint64,quint64)));
 
   // --- When download finished, save the file.
   connect(manager,SIGNAL(finished(QNetworkReply *)),this,SLOT(saveFileDownloaded(QNetworkReply *)));
}
 
void MyClasse::downloadProgressShow(qint64 bytesRead, quint64 bytesTotal)
{
    qDebug() << QString::number(bytesRead).toLatin1() + " bytes of " + QString::number(bytesTotal).toLatin1();
}

...
...
void MyClasse::on_btnDownload_clicked() 
{
   ...
   QNetworkAccessManager *manager = new QNetworkAccessMananger(this);
   QNetworkReply *reply = manager->get(QNetworkRequest(QUrl("http://www .....")));
   // --- Show the progress.
   connect(reply,SIGNAL(downloadProgress(qint64,qint64)),this,SLOT(downloadProgressShow(qint64,quint64)));
       
   // --- When download finished, save the file.
   connect(manager,SIGNAL(finished(QNetworkReply *)),this,SLOT(saveFileDownloaded(QNetworkReply *)));
}

void MyClasse::downloadProgressShow(qint64 bytesRead, quint64 bytesTotal)
{
    qDebug() << QString::number(bytesRead).toLatin1() + " bytes of " + QString::number(bytesTotal).toLatin1();
}

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The file download is correctly, but the progressbar is not refreshed. The application output of Qt Creator say:

QObject::connect: Incompatible sender/receiver arguments
QNetworkReplyHttpImpl::downloadProgress(qint64,qin t64) --> Classe::downloadProgressShow(qint64,quint64)

But really the functions of SIGNAL and SLOT are the same arguments, or not?

Thanks in advance.

[wysota]

No, qint64 and quint64 are different types.

[Lesiok]

From the QNetworkReply::downloadProgress doc : If the number of bytes to be downloaded is not known, bytesTotal will be -1. How You want to convert it to the unsigned type ?

[monillo]

Thanks for the reply.

Really I need clean my glasses

[ChrisW67]

You should also see a run time warning message that the connect() call failed because the target was missing.