MenuButton.setIconName
void setIconName(string iconName)Sets the name of an icon to show inside the menu button.
Setting icon name resets gtk.menu_button.MenuButton.label and gtk.menu_button.MenuButton.child.
If gtk.menu_button.MenuButton.alwaysShowArrow is set to TRUE and gtk.menu_button.MenuButton.direction is not gtk.types.ArrowType.None, a dropdown arrow will be shown next to the icon.
Parameters
iconName | the icon name |