Sets or unsets the "label" attribute of menu_item.
If label is non-NULL it is used as the label for the menu item. If it is NULL then the label attribute is unset.
the label to set, or NULL to unset
2.32
Sets or unsets the "label" attribute of menu_item.
If label is non-NULL it is used as the label for the menu item. If it is NULL then the label attribute is unset.