How to get selected items in tree widget

[deleted286]

I want to achieve the selected items. After i get them, i will double click and do some operations.
My code doesnt work and I dont think my code is true

void MainWindow::on_treeWidget2_itemDoubleClicked(QTreeWidgetItem *item, int column)
{

QList<QTreeWidgetItem *>items = treeWidget->selectedItems();
qDebug() << items;

}

[deleted286]

@suslucoder it is work

QList<QTreeWidgetItem*> slctdList = ui->treeWidget2->selectedItems();
for(QTreeWidgetItem* item : slctdList)
{
    scln = QString::fromStdU16String(item->text(0).toStdU16String());
    qDebug() << scln;

}

[deleted286]

@suslucoder I have another question,

in table widget i can restrict the selected rows and do my operation like

if(item->row() >=0 & item->row() <=10)
 { 
........
 }

How should it be in tree widget?
There is no row

[jsulm]

@suslucoder https://doc.qt.io/qt-5/qtreeview.html#selectedIndexes
https://doc.qt.io/qt-5/qmodelindex.html#row

[deleted286]

@jsulm i can get the index of my double clicked items like that

qDebug() << ui->treeWidget2->currentIndex().row();

but how can adapt it for selected ones

[JonB]

@suslucoder
@jsulm just referred you to QTreeView::selectedIndexes(), which returns a QModelIndexList, and to QModelIndex, which has a row() member (as you use from currentIndex()). Can you not put those two together?

for (QModelIndex index : ui->treeWidget2->selectedIndexes())
    qDebug() << index.row();

Or do you have some other question?

[deleted286]

@JonB but tree widget doesnt have selectedIndexes()

[JonB]

@suslucoder
But it does have selectedIndexes. @jsulm even gave you the reference. Go to List of All Members for QTreeWidget, search for selectedIndexes. Please remember about C++ inheritance when you are programming.

[deleted286]

@JonB i remember but maybe qt dont.
Because it gives me that error

[JonB]

@suslucoder

i remember but maybe qt dont.

So Qt/C++ inheritance does not work, and the documentation is wrong, but you are correct?

Because it gives me that error

What error? You have not shown any error. Again, how many times can we ask you: if you get an error, paste the line of code and paste the error message you receive. Could you please do this each time instead of saying "something does not work"?

EDIT
Ah, now hang on. I have just noticed that QModelIndexList QTreeView::selectedIndexes() const is documented [override virtual protected]. All the more reason to show the error message instead of saying "Because it gives me that error"....

Because of the protected, that means you will not be able to access ui->treeWidget2->selectedIndexes() unless you have subclassed treeWidget2 from the base QTreeWidget, which I do not imagine you have done. So instead you should use ui->treeWidget2->selectionModel() to access the selections. That QItemSelectionModel has methods selectedIndexes() or even selectedRows() to access the selected rows directly, which is what you asked for: qDebug() << ui->treeWidget2->selectionModel()->selectedRows().

[deleted286]

@JonB Ok. Anyway. I did it

if(item->parent() ==  myparentitem)
  { ....}

[jsulm]

@JonB said in How to get selected items in tree widget:

instead of saying "Because it gives me that error"....

You have to ask some people again and again to provide basic information...