can anyone help me with qt

void MainWindow::on_actionOpen_triggered()
{
    QString file = QFileDialog::getOpenFileName(this,"Qpen a file please");
    if(!file.isEmpty())
    {
        QFile sFile(file);
        if(sFile.open(QFile::ReadOnly | QFile::Text))
        {
            mFilename = file;
            QTextStream in(&sFile);
            QString text = in.readAll();
            sFile.close();
            ui->textEdit->setPlainText(text);
        }
    }
}