QListview flickers when model updates in another thread

xalam

I am updating my QStandardItemModel in a separate thread but QListView flickers while it updates. I am using QtConcurrent::run to do that, its dumb question but will it make any better if I do using QThread instead? IS there a way to remove the flicker?

// somewhere on button click. I start the search in a separate thread which updates the model
@void MainWindow::on_pushButtonConvert_clicked()
{
// ...
QtConcurrent::run( this, &MainWindow::convertXmlFiles, sourceDir.absolutePath(), destDir.absolutePath() ) ;
}@

@int MainWindow::searchXmlFiles(QString rootDir)
{
clear();

int count = 0;

QString xmlFilePath;

QDirIterator iter( rootDir, QStringList() << "*.xml", QDir::Files | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);

QDir dir( rootDir );

while(iter.hasNext() )
{
    iter.next();

    xmlFilePath = iter.filePath();

    QStandardItem * item = new QStandardItem( QIcon(":/icons/Progeny.ico") , dir.relativeFilePath( xmlFilePath) );

    appendRow( item );

    count++;
}

return count;

}@

SGaist

Hi,

You should not update your models directly from a different thread. Both view and model should live in the GUI thread. Some more information "here":http://stackoverflow.com/a/9489604