icon_name

Description:

[ Version ( since = "2.10" ) ]
public string icon_name { get; set; }

The name of the icon from the icon theme.

Note:

Use the "icon" attribute on a MenuItem instead

Note that the stock icon is preferred, if the stock_id property holds the id of an existing stock icon, and the Icon is preferred if the gicon property is set.

This is an appearance property and thus only applies if use_action_appearance is true.