gtk/gtk.go
func (v *Notebook) SetMenuLabel(child, menuLabel IWidget) {
	C.gtk_notebook_set_menu_label(v.native(), child.toWidget(),
		menuLabel.toWidget())
}
func (v *Notebook) SetMenuLabel(child, menuLabel IWidget) {
	C.gtk_notebook_set_menu_label(v.native(), child.toWidget(),
		menuLabel.toWidget())
}
// SetMenuLabel() is a wrapper around gtk_notebook_set_menu_label().