How to know a QTreeWidget selected item?

Question

I have a class that inherits by QTreeWidget, how can I know the actually selected row? I explain, usually we connect signals to slots by this way:

connect(myButton, SIGNAL(triggered(bool)), this, SLOT(myClick()));

I can't find nothing to similar for QTreeWidget->QTreeWidgetItem. The only way I found is this: redefining the mousePressEvent of QTreeWidget class like this

void MyQTreeWidget::mousePressEvent(QMouseEvent *e){
    QTreeView::mousePressEvent(e);
    const QModelIndex index = indexAt(e->pos());
    if (!index.isValid())
    {
    const Qt::KeyboardModifiers modifiers = QApplication::keyboardModifiers();
    if (!(modifiers & Qt::ShiftModifier) && !(modifiers & Qt::ControlModifier))
    clearSelection();
    }
 }

I didn't try it yet. Can anybody tell me if this is the unique solution or if there is a simplest way? Thanks

Answer 1

According to the documentation here it appears that you should connect the QTreeWidget itemSelectionChanged() signal to a slot in your class. That will tell you which QTreeWidgetItem was selected which is what I believe you want.

Answer 2

Dusty is almost correct. But the itemSelectionChanged signal will not tell you which item is selected.

QList<QTreeWidgetItem *> QTreeWidget::selectedItems() const

will give you the selected item(s).

So, connect a slot to the itemSelectionChanged signal, then call selectedItems() on the tree widget to get the selected item(s).

Answer 3

ooops, I've solved simply using this:

connect(this,SIGNAL(itemClicked(QTreeWidgetItem*, int)), SLOT(mySlot()));

however thanks for replies :D

Answer 4

Using the itemClicked() signal will miss any selection changes made using the keyboard. I'm assuming that's a bad thing in your case.