How to make a list(QList) of QFiles? and how it works?

January 26, 2023

I am trying to make a list of QFiles, I went for the QList approach but am not sure if it is good approach or not.
I write this code but it fails to build!

QList<QFile> filesList;

QFile file_1(QString("path/to/file_1"));
QFile file_2(QString("path/to/file_2"));

filesList.append(file_1);
filesList.append(file_2);

    for(auto& file : filesList){
        if(!file.open(QIODevice::ReadOnly)){
            qDebug() << "file is not open.";
        }
}

The build failed with this error:

error: ‘QFile::QFile(const QFile&)’ is private within this context
     if (QTypeInfo<T>::isLarge || QTypeInfo<T>::isStatic) n->v = new T(t);
                                                                 ^~~~~~~~

Is it good to use QList approach of making a list of files to use later? if so, how to fix my code ?

>Solution :

Why are you trying to create a list of QFile? Perhaps you can just store QString paths and then create QFile when needed:

QVector<QString> filePathsList;
filePathsList << QStringLiteral("path/to/file_1"));
filePathsList << QStringLiteral("path/to/file_2"));

for (auto &filePath : qAsConst(filePathsList)) {
    QFile file(filePath);
    if (!file.open(QIODevice::ReadOnly)) {
        qDebug() << "file is not open.";
    }
}