Gtk.Label.prototype.set_angle

function set_angle(angle:Number):void {
    // Gjs wrapper for gtk_label_set_angle()
}

Sets the angle of rotation for the label. An angle of 90 reads from from bottom to top, an angle of 270, from top to bottom. The angle setting for the label is ignored if the label is selectable, wrapped, or ellipsized.

Since 2.6