Modify behaviour to select more than one item in GtkListStore

[Emmanuel Di Pretoro <edipreto skynet be>]

Hi everybody,

I want to modify the behaviour of my GtkTreeView/GtkListStore. I can
select more than one item, but I don't want to use 'Ctrl+Click' to
select another item.

I've searched into the documentation, but I haven't found anything. I
know how to connect a function to my GtkTreeView/GtkListStore, but I
don't know to program this behaviour.

Anybody can help me ?

Thanks,

Manu