QTreeView and QStandardItemModel limitations when using custom delegates

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Hi all,

I have problem using QTreeView with delegates in a QStandardItemModel model. I used the setItemDelegateForColumn method to apply my delegate to the second column of my QTreeView but it is also applied on the "root" rows column which I don't want. It doesn't seem possible to apply a delegate on a specific number of cells.

I attached a picture to this thread showing my ongoing result. If mya briefly comment it, I would like the <arbiter> row ComboBox delegate to dissapear. What do I have to do in order to get what I want ? Implement a custom Model or a Custom view ?

Ideally I would like to implement the "Property Editor" of QtCreator but I don't know how to do this.

Thanks for your help