Identifying item from QModelIndex?

SRaD

I have a delegate to my model setup.

delegate = new MyTreeViewDelegate;

treeView = new MyTreeView;
treeView->setModel(treeModel);
treeView->setItemDelegateForColumn(1, delegate);

And here's the paint method.

void MyTreeViewDelegate::paint(QPainter *painter, 
    const QStyleOptionViewItem &option, const QModelIndex &index) const
{   
    QString indexData = index.data(Qt::DisplayRole).toString();

    if (parent.row() == 0 && (option.state & QStyle::State_MouseOver)) {
        qDebug << "which indexData child item: " << indexData;
    }
}

I'm trying to identify the item that was hovered over by the mouse. The problem is that ...

QString indexData = index.data(Qt::DisplayRole).toString();

... always return "", as if there's nothing in it. But my model does have child items in the QTreeView with text.

Am I trying to access the data wrong? I'm trying to identify what child item was hovered over with the mouse.

SGaist

Hi,

Do you also have a custom model ?

If so, are you sure that it returns something valid ?

JonB

@SRaD
Maybe not to do with your "empty string display value", but I thought that to enable hover tracking you needed to treeView->viewport()->setAttribute( Qt::WA_Hover );?

SRaD

@JonB
Yes, I have exactly that line after setItemForDelegateColumn(). I should have posted that as well.

@Christian-Ehrlicher
Yes, I have a class that is derived from QAbstractItemModel. When you ask if it returns something valid, what are you referring to there?

SGaist

@SRaD said in Identifying item from QModelIndex?:

@Christian-Ehrlicher
Yes, I have a class that is derived from QAbstractItemModel. When you ask if it returns something valid, what are you referring to there?

Except I'm not Christian ;-)

Yes that's what I'm referring to.