Question

I have made a simple program that show directory listing in QTreeView using QFileSystemModel.

With a QPushButton the program is calling a slot that is making a new directory, but it never makes a new directory.

This is the slot that makes a new directory:

QModelIndex index=viewTreeForModel->currentIndex();

if (!index.isValid()) return;

QString filename=QInputDialog::getText(this, "Enter Name Dialog", "Enter name");

modelFile->mkdir(viewTreeForModel->currentIndex(), filename);

I dont get a error messages from the program when it runs.

Answer 1

Check the QModelIndex returned by mkdir is valid.

You could also try

const bool success = QDir(modelFile->filePath(index)).mkdir(string);

Then check the value of success.

As an aside, I would recommend renaming the variable string to something like newfilename, it would make the code more readable.