Sets the icon for the tool button from a named themed icon. See the docs for GtkIconTheme for more details. The "icon_name" property only has an effect if not overridden by non-NULL "label", "icon_widget" and "stock_id" properties. Since 2.8
the name of the themed icon. [allow-none]
See Implementation
Sets the icon for the tool button from a named themed icon. See the docs for GtkIconTheme for more details. The "icon_name" property only has an effect if not overridden by non-NULL "label", "icon_widget" and "stock_id" properties. Since 2.8