void Append(int id, char * item, char *helpString = NULL)
void Append(int id, char * item, wxMenu *submenu, char *helpString = NULL)
Adds the item to the end of the menu. item must be deallocated by the calling program. If the second form is used, the given menu will be a pullright submenu (must be created already). Do not use submenu after this call: it will be deallocated by wxWindows.
Each form can take an optional help string, which can be accessed using wxMenu::GetHelpString. The default wxFrame::OnMenuSelect member uses this help string to give help on the menu item currently under the cursor.