GtkCellRendererToggle
toggles when it gets a mouse click.gtkCellRendererActivate(object, event, widget, path, background.area, cell.area, flags)objecteventGdkEventwidgetpathGtkTreeView, a string representation of GtkTreePathbackground.areagtkCellRendererRendercell.areagtkCellRendererRenderflagsTRUE if the event was consumed/handled