Moving Selected Treeview Rows


I have a GTK2 ListView and I want to allow the user to move all selected
rows by pressing an up/down button.

Do I really need to delete and re-insert the row? Since that's quite
slow and the selection is lost as well it doesn't seem to be a clean

I am trying to solve this simple task since several hours, any ideas
what's the proper way to do that?

The brain is a wonderful organ. It starts working the moment you get up
in the morning and does not stop until you get into the office.

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