Identifying when user clicks on a row in GtkTreeView

[David Whitmarsh <david whitmarsh sparkle-cc co uk>]

I'm a relative newcomer to this so please forgive me if this is an
obvious question but I've done a little research and tinkered with Glade
and it isn't obvious to me.

I have a window with a GtkTreeView and some text boxes. I would like to
populate the text boxes from the ListModel behind the GtkTreeView,
updating the boxes whenever the user selects another row. My first
problem is that I can't find a signal that's fired whenever the user
clicks on the GtkTreeView - double clicks, yes, that's activate_row. Is
there such a signal, or another way of accomplishing my objective?

Thanks,

David

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