QTextEdit Drag and Drop

First step was:

Code:

---

MainWindow::MainWindow()
{
    textEdit = new QTextEdit;
    setCentralWidget(textEdit);
 
    textEdit->setAcceptDrops(false);
    setAcceptDrops(true);
 
    setWindowTitle(tr("Text Editor"));
}
 
void MainWindow::dragEnterEvent(QDragEnterEvent *event)
{    
     event->accept();
}
 
void MainWindow::dragMoveEvent(QDragMoveEvent *event)
{
     event->accept();
}
 
void MainWindow::dropEvent(QDropEvent *event)
{
    if (event->mimeData()->hasFormat("text/uri-list")) {
    QList<QUrl> urls = event->mimeData()->urls();
    if (urls.isEmpty())
        return;
 
    QString fileName = urls.first().toLocalFile();
    if (fileName.isEmpty())
        return;
 
    if (readFile(fileName))
        setWindowTitle(tr("%1 - %2").arg(fileName)
                                    .arg(tr("Drag File")));
    }
}

---

In the second step I enabled drops for textEdit

Code:

---

textEdit->setAcceptDrops(true)

---

and subclassed it, so now it's possible to move/copy a text from a line to another:

Code:

---

...dragEnterEvent(QDragEnterEvent *e)
{
    if (e->source()) {
        if (e->source()->objectName() == "qt_scrollarea_viewport") {
            e->accept();
        }
    }
}
 
...dragMoveEvent(QDragMoveEvent *e)
{
    e->accept();
}

---

My questions:
1. During drag the cursor stays hidden: is this due to the non-propagation of the event to the parent?
2. Why subclassing dropEvent() like this

Code:

---

...dropEvent(QDropEvent *e)
{
    e->accept();
}

---

text is not copied/moved?
3. Are there any alternatives to get this task?
I hope this thread will be useful for others.
Thank you so much.

4. Why

Code:

---

...dragEnterEvent(QDragEnterEvent *e)
{
    if (e->source() == this)
        e->accept();
}

---

does not work?

Unclear questions?

5. Why

Code:

---

...dropEvent(QDropEvent *e)
{
    const QMimeData *mimeData = e->mimeData();
    insertFromMimeData(mimeData);
}

---

this neither?

Please don't ask questions in visitor messages. If someone can answer your post, they will.

Thank you for your kind specification and for the precious help.