Deleting a folder and all its contents with Qt?

Question

How to delete a folder and all its contents with Qt?

I tried using:

QFile::remove();

but it seems like it deletes only one file a time.

This is a duplicate of this question here: http://stackoverflow.com/questions/11050977/removing-a-non-empty-folder-in-qt — Rahul Manne, Jan 03 '15 at 19:19
Possible duplicate of [Removing a non empty folder in Qt](http://stackoverflow.com/questions/11050977/removing-a-non-empty-folder-in-qt) — sigy, Jan 31 '17 at 13:58

Iuliu · Accepted Answer · 2021-05-14T08:27:24.433

For Qt5 and above there is QDir::removeRecursively:

QDir dir("C:\\Path\\To\\Folder\\Here");
dir.removeRecursively();

For Qt4 or lower you can use a recursive function that deletes every file:

bool removeDir(const QString & dirName)
{
    bool result = true;
    QDir dir(dirName);

    if (dir.exists(dirName)) {
        Q_FOREACH(QFileInfo info, dir.entryInfoList(QDir::NoDotAndDotDot | QDir::System | QDir::Hidden  | QDir::AllDirs | QDir::Files, QDir::DirsFirst)) {
            if (info.isDir()) {
                result = removeDir(info.absoluteFilePath());
            } else {
                result = QFile::remove(info.absoluteFilePath());
            }

            if (!result) {
                return result;
            }
        }
        result = dir.rmdir(dirName);
    }
    return result;
}

as stated here.

I deleted the whole directory contains about 700 files source code, fortunately I committed to svn one day before. The `QDir::NoDotAndDotDot` is very important, elsewhere it jumps one height level and then it will delete everything there — Phiber, Jul 28 '17 at 15:12

Deleting a folder and all its contents with Qt?

1 Answers1