updating a qprogressbar with qfuturewatcher
I have searched all over the net, but everyone seems to be using a lame qprogressdialog, like I want another $*%& dialog to deal with. Anyway i am trying to update a qprogressbar with the following code.
QFuture<void> videoscan = QtConcurrent::map(videofiles, pvideo ); QFutureWatcher<void> scanwatcher; QObject::connect(&scanwatcher, SIGNAL(progressRangeChanged(int,int)),progress, SLOT(setRange(int,int))); QObject::connect(&scanwatcher, SIGNAL(progressValueChanged(int)), progress, SLOT(setValue(int))); scanwatcher.setFuture(videoscan);
the qprogressbar is in the constructor for MainWindow like this
progress = new QProgressBar(ui->statusbar); statuslabel.setPalette(ui->statusbar->palette()); statuslabel.setText("Idle"); progress->setVisible(true); progress->setMinimum(0); ui->statusbar->addWidget(&statuslabel); ui->statusbar->addPermanentWidget(progress);
I do not get any errors, the progressbar is just not updated, what am I missing?
haha solved it. I had to make qfuturewatcher and qfuture member declarations and move the connect calls to the MainWindow constructor and it works!!!