The ::item-activated signal is emitted when the method
gtk_icon_view_item_activated() is called, when the user double
clicks an item with the "activate-on-single-click" property set
to %FALSE, or when the user single clicks an item when the
"activate-on-single-click" property set to %TRUE. It is also
emitted when a non-editable item is selected and one of the keys:
Space, Return or Enter is pressed.
The ::item-activated signal is emitted when the method gtk_icon_view_item_activated() is called, when the user double clicks an item with the "activate-on-single-click" property set to %FALSE, or when the user single clicks an item when the "activate-on-single-click" property set to %TRUE. It is also emitted when a non-editable item is selected and one of the keys: Space, Return or Enter is pressed.