qt QFileDialog 获取目录

    QFileDialog* fileDialog = new QFileDialog(this);
    fileDialog->setWindowTitle("Choose Source Directory");
    //fd->setDirectory(buf);
    fileDialog->setFileMode( QFileDialog::DirectoryOnly );
    QStringList fileName;
    if ( fileDialog->exec() == QDialog::Accepted )
    {
        fileName = fileDialog->selectedFiles();
        //srcDir.setPath(fileName.at(0));
        ui->textBrowser_ANPRResult->append(fileName.join(","));
    }
    else
    {
        return;
    }