public EllipsizeMode ellipsize { get; set; }

The preferred place to ellipsize the string, if the label does not have enough room to display the entire string.

Note that setting this property to a value other than pango_ellipsize_none has the side-effect that the label requests only enough space to display the ellipsis "...". In particular, this means that ellipsizing labels do not work well in notebook tabs, unless the [property@Gtk.NotebookPage:tab-expand] child property is set to true. Other ways to set a label's width are [method@Gtk.Widget.set_size_request] and [method@Gtk.Label.set_width_chars].