set_icon_name

Description:

public void set_icon_name (string icon_name)

Sets the name of an icon to show inside the menu button.

Setting icon name resets [property@Gtk.MenuButton:label] and [property@Gtk.MenuButton:child].

If [property@Gtk.MenuButton:always-show-arrow] is set to `TRUE` and [property@Gtk.MenuButton:direction] is not `GTK_ARROW_NONE`, a dropdown arrow will be shown next to the icon.

Parameters:

this	a `GtkMenuButton`
icon_name	the icon name