显示mp3文件，但使用QFileDialog选择文件夹

Question

Currently, I can select a folder using QFileDialog 's getExistingDirectory function. Even thought I managed to let the dialog show the files as well, I would like to filter them, ie display only folders and *.mp3 files.

QString folder = QFileDialog::getExistingDirectory(this, "test", "", QFileDialog::ReadOnly);

Is this possible without creating a custom dialog?

Answer 1

QFileDialog d(this);
d.setFileMode(QFileDialog::Directory);
d.setNameFilter("*.mp3");
if (d.exec())
  qDebug () << d.selectedFiles();

Answer 2

I am on mobile rt now. Giving a kind of hints only....

On Windows and macOS, this static function will use the native file dialog and not a QFileDialog. However, the native Windows file dialog does not support displaying files in the directory chooser. You need to pass DontUseNativeDialog to display files using a QFileDialog. ( from qfiledialog documentation)

So set the 'QFileDialog::DontUseNativeDialog' option using 'setflags'

Then using file dialog's 'setfilter' set the filter for your MP3 files..