Gtk.Label.prototype.set_markup

function set_markup(str:String):void {
    // Gjs wrapper for gtk_label_set_markup()
}

Parses str which is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>, setting the label's text and attribute list based on the parse results. If the str is external data, you may need to escape it with GLib.markup_escape_text or GLib.markup_printf_escaped<!-- -->: |[ char *markup;

markup = g_markup_printf_escaped ("&lt;span style=\"italic\"&gt;&percnt;s&lt;/span&gt;", str); gtk_label_set_markup (GTK_LABEL (label), markup); g_free (markup); ]|