\param{const wxString\& }{helpString = ""}}
Adds a pull-right submenu to the end of the menu. Append the submenu to the parent
menu {\it after} you have added your menu items, or accelerators may not be
registered properly.
\param{const wxString\& }{helpString = ""}}
Adds a pull-right submenu to the end of the menu. Append the submenu to the parent
menu {\it after} you have added your menu items, or accelerators may not be
registered properly.