How can I temporarily disable treeview from updating, because these updating sometimes freezing and block GUI

vbsdfn123

I've created my class that inherits QFileSystemModel and I set this model to treeview

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

model = new MyFileSysModel(this);
model->setRootPath("/");

 ui->treeView->setModel(model);
 ui->treeView->setSelectionMode(QAbstractItemView::ExtendedSelection);
 ui->treeView->setDragEnabled(true);
 ui->treeView->viewport()->setAcceptDrops(true);
 ui->treeView->setDropIndicatorShown(true);
 ui->treeView->setDragDropMode(QAbstractItemView::DragDrop);
 ui->treeView->setAcceptDrops(true);
 ui->treeView->setDefaultDropAction(Qt::MoveAction);

 ui->treeView->blockSignals(true);

but when I copy files in separate thread (3 big files is enough), my treeview is freezing and doesn't work very well, I tried to blockSignals, but it didn't give me any results, it is still blocking. I can't totally disable treeview with setUpdatesEnabled(true), because I want to use it. Please, help me, I really desperate, this is very easy task and I can't solve this already two days.

SGaist

Hi and welcome to devnet,

Are you sure the copy happens in that other thread ?

vbsdfn123

hey, yes, I am sure, Here is my code, that launches other thread:

class MoveFilesTask : public QObject, QRunnable
    {
        Q_OBJECT
        void run()
        {
            QFile::copy(source, destination);
        }
       void MoveFilesTask::runFilesTransfer(QString source, QString destination)
        {
           QThreadPool::globalInstance()->start(this);
        }
};

SGaist

Then can you describe exactly what you and your application are doing when the freezing happens ?