GridView without reflow

[wysota]

If you want a custom view in QML then there is no base type to build upon, you have to implement all communication with the model by yourself.

[shaolin]

I think so too. But before this I will try 2 things:
creating a QML view using an horizontal ListView in which every element delegate is a vertical ListView.
If this will not work I could try to subclass QTableView, implementing its custom delegate, and exporting my QTableView subclass as a QML component...