It could be that I misunderstand the documentation, but for QComboBox::setItemDelegate() the documentation states:

Sets the item delegate for the popup list view. The combobox takes ownership of the delegate.

Now, I had the following code result in memory leaks:

if (const auto comboBox = qobject_cast<QComboBox *>(widget))

It's easily fixed of course. I can pass the comboBox variable to the constructor of the QStyledItemDelegate to serve as its parent QObject.

However, I thought I'd mention it anyway. To me it seems like the documentation is wrong about the QComboBox taking ownership of the delegate.

Regards, Arjen