Clicking on a GtkCellRendererPixbuf

I have a GtkTreeView, which contains several GtkCellRendererToggle columns. I'd like to replace them with a GtkCellRendererPixbuf column, with three possible states.

I can change the pixbuf in the column no problems. But I'd like the column to respond to mouse clicks, like a GtkCellRendererToggle. How do I intercept mouse clicks to this column?

Calum Grant

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