Problem with filter in Qdialog

[Spinter]

Well, my problem is I only want to see the directories that are writeable and save the path of the selected one in a QString


I have the next code but I dont know how to apply exactly the filter.

QString directoryName = QFileDialog::getExistingDirectory(
                this,tr("Select directory"),
                "/home/"
                "QDir::Writable");

QString directoryName = QFileDialog::getExistingDirectory(
                this,tr("Select directory"),
                "/home/"
                "QDir::Writable");

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