Returning QFileSystemModel

Nineswiss

I am trying to return a QAbstractItemModel from QFileSystemModel to use in my QML tree view. I'm not sure how to return anything. Ps I am new to C++. I don't even know if this is correct.

QAbstractItemModel listFiles(const QString &filepath){
    QFileSystemModel model;
    model.setFilter(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
    model.setRootPath(filepath);
    return model; // WHAT DO I RETURN HERE?
}

jsulm

@Nineswiss said in Returning QFileSystemModel:

// WHAT DO I RETURN HERE?

In this code a copy of model.
You can allocate your model on the heap (using new) and return pointer to it.

Nineswiss

Thanks @jsulm! I'm not really sure what that means but I will research.

Nineswiss

Hmmm, I still can't seem to work it out :/

jsulm

@Nineswiss said in Returning QFileSystemModel:

I still can't seem to work it out :/

What exactly? Please be more clear about what you are asking.
In the code you posted you return model and return type of listFiles is QAbstractItemModel (by value) - that means that your model is copied. This is basic C++.
If you do not want this copying then allocate on the heap using new (again: basic C++):

QAbstractItemModel* listFiles(const QString &filepath){
    QFileSystemModel *model = new  QFileSystemModel();
    model->setFilter(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
    model->setRootPath(filepath);
    return model;
}