Slow performance: Removing huge amount of rows from qstandarditemmodel

**gig-raf** · 29th March 2016, 21:03

I have a QStandardItemModel with 10000 Rows. If I want to remove a huge percent of these like 5000 the performance is very bad and the gui freezes. I could run the remove in a thread, but I am concerned what could happend if a user clicks a row that is going to be removed shortly.

Qt Code:

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QModelIndexList indexes = ui->playTableView->selectionModel()->selectedRows();
 
    for (int i=0; i<indexes.count(); i++) {
        if (!ui->playTableView->isRowHidden(indexes[i].row()) ) {
            plmodel->removeRow(indexes[i].row());
        }
    }

QModelIndexList indexes = ui->playTableView->selectionModel()->selectedRows();

    for (int i=0; i<indexes.count(); i++) {
        if (!ui->playTableView->isRowHidden(indexes[i].row()) ) {
            plmodel->removeRow(indexes[i].row());
        }
    }

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This works, but takes very long time; maybe 30 seconds. it gives a bad user experience. Is there a faster way?

any ideas?