Sets the icon for the tool button from a named themed icon. See the docs for gtk.IconTheme for more details. The icon-name property only has an effect if not overridden by non-NULL label-widget, icon-widget and stock-id properties.
the name of the themed icon
2.8
Sets the icon for the tool button from a named themed icon. See the docs for gtk.IconTheme for more details. The icon-name property only has an effect if not overridden by non-NULL label-widget, icon-widget and stock-id properties.