How to nicely “cast” qint64 to int for QProgressBar

Question

I\'m playing around with QFtp (yes .. I know) and all works well.

Using code from their own example(s) as a guideline.

http://doc.qt.io/archives/qt-4.7/netwo

Answer 1

Set your progress bar to a range of 0-100, and display the percentage of bytes read instead of trying to set the absolute value.

Answer 2

You can make the progress bar present the progress as a percentage:

void FtpWindow::updateDataTransferProgress(qint64 readBytes, 
    qint64 totalBytes) 
{
    progressDialog->setMaximum(100);
    progressDialog->setValue((qint)((readBytes * 100) / totalBytes));
}