QSortFilterProxyModel : sort columns

[Kouillo]

Thanks for the answer.

If I understand what you mean, you advise me to build one other QSortFilterProxyModel above the current one, where I swap data from row to column ?
And How can I swap it again to display columns as columns and rows as rows ?

This seems very complicated for the simple sort I have to do. My QSortFilterProxyModel has some other operations and I fear to get some trouble with this method...

Does it exist any method to move columns in the QSortFilterProxyModel, and edit mapping ?

[ChrisW67]

Since you have a custom model anyway why not do the sorting there?

[Kouillo]

I do not find how to move columns in the QSortFilterProxyModel.
I already make a sort for the rows.

This seems very complicated for the simple sort I have to do. My QSortFilterProxyModel has some other operations and I fear to get some trouble with this method...

Does it exist any method to move columns in the QSortFilterProxyModel, and edit mapping ?

[pkj]

Nope, what I am suggesting that in the main model, you have the transposed matrix which you want to show. This is the one which operates on data. The next one on top of it merely transposes the transposed matrix and makes it as you want to see. It means making a few models. A model creation doesn't take too much time.
However, I think I am unable to express it clearly.
You can as well follow Chris advice and do the sorting in your model itself. At the row button click, get all the rows and their data and emit signals like columnsAboutToBeMoved(), columnsMoved, etc.