在 listWidget 中显示文件夹和子文件夹中的所有文件

Question

I want to display all *.dat files which are in a selected path including the subfolder: my selected folder is "C:\iba\dat" and in iba there are two other folders Energie and Prozess and in these two folders are my Files which I want to display in my ListWidget.

FAeingabe::FAeingabe(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::FAeingabe)
{
    ui->setupUi(this);
    //icon
    setWindowIcon(QIcon(":/Icons/icon.ico"));

    QDir myPath("C:\\iba\\dat");
    QStringList nameFilters;
    nameFilters<<"*.dat";
    myPath.setFilter(QDir::AllEntries | QDir::Files | QDir::NoDotAndDotDot | QDir::NoDot);
    faList = myPath.entryList();
    ui->listWidget->addItems(faList);
    ui->total->setText(QString("%1").arg(ui->listWidget->count()));
}

I get this:

Answer 1

First, you have not used your nameFilters. Second, you should use QDirIterator for getting the list of files.

QDirIterator it(QStringLiteral("C:\\iba\\dat"), QStringList() << "*.dat", QDir::Files, QDirIterator::Subdirectories);
QStringList faList;
while (it.hasNext())
       faList.append(it.next());