QTreeWidget - itemAt(QMousePos): error if there is a header

[Phalanx]

Hi, I have a problem with QTreeWidget with function itemAt(QMousePos). If there is a header in tree widget then function returns next item. Is it a bug?

[stampede]

Post a minimal compilable code reproducing the problem

[wysota]

Hi, I have a problem with QTreeWidget with function itemAt(QMousePos). If there is a header in tree widget then function returns next item. Is it a bug?

No, it's not a bug. The coordinates are in viewport space not the view space.

[Phalanx]

Thank you wysota

[Phalanx]

I can not figured it out.

I use it this way now, but it is not working with header:

// without header works fine
QMouseEvent *MousePos; // where the user clicked
treeWidget->itemAt(MousePos->pos())
 
// with header, try to get global position but never returns item
QMouseEvent *mouseEvent = static_cast<QMouseEvent*> (event);
QPoint globalPos = ui->treeWidget->viewport()->mapToGlobal(mouseEvent->pos());
QTreeWidgetItem *item = ui->treeWidget->itemAt(globalPos);

// without header works fine
QMouseEvent *MousePos; // where the user clicked
treeWidget->itemAt(MousePos->pos())

// with header, try to get global position but never returns item
QMouseEvent *mouseEvent = static_cast<QMouseEvent*> (event);
QPoint globalPos = ui->treeWidget->viewport()->mapToGlobal(mouseEvent->pos());
QTreeWidgetItem *item = ui->treeWidget->itemAt(globalPos);

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fuck, nothing works

[wysota]

Why are you trying to get a global position? You don't need a global position but position in the viewport's coordinate space.

This should work:

QPoint pos = ui->treeWidget->viewport()->mapFromParent(event->pos());

QPoint pos = ui->treeWidget->viewport()->mapFromParent(event->pos());

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or something like that, depending on what is the receiver of the event.

[Phalanx]

Thank you, that's it It tooks me few hours of my life