Do I need to call deleteLater() function if QTreeView has widget ownership?

[Yash001]

Hello,

I am using QTreeView and QStandardItemModel to represent some data on Table. While representing the data I try to show some widget on table using function void QAbstractItemView::setIndexWidget(const QModelIndex &index, QWidget *widget). It is show correctly.

Now main question is that if user try to set the new data on table at that time I am removing all previous data using bool QAbstractItemModel::removeRow(int row, const QModelIndex &parent = QModelIndex()).

Do I require to call deleteLater() function while removing data? Or removing row from model is automatically delete the widget?

auto wdg = treeWidget->indexWidget(index);
wdg->disconnect();
wdg->deleteLater();

[JonB]

@Yash001
When items are removed from a model the view will update to reflect the new state. Widgets you have added via setIndexWidget() which are no longer present will be deleted by Qt infrastructure without you needing to delete them or disconnect from signals.

[JonB]

@Yash001 said in Do I need to call deleteLater() function if QTreeView has widget ownership?:

setIndexWidget

https://doc.qt.io/qt-5/qabstractitemview.html#setIndexWidget says:

Sets the given widget on the item at the given index, passing the ownership of the widget to the viewport.

[Yash001]

@JonB Yes I know QTreeview has ownership of widget. If I will remove the row using model function then widget will delete automatically or not ?

[Yash001]

Sorry For asking silly question. Here I got my ans RemoveRow From Model
void QStandardItem::removeRow(int row)

[JonB]

@Yash001
When items are removed from a model the view will update to reflect the new state. Widgets you have added via setIndexWidget() which are no longer present will be deleted by Qt infrastructure without you needing to delete them or disconnect from signals.