Function GetMenuString 

pub unsafe extern "system" fn GetMenuString(
    hmenu: *mut c_void,
    uiditem: u32,
    lpstring: *mut u16,
    cchmax: i32,
    flags: u32,
) -> i32

#76 GetMenuString

retrieves the contents string of a menu item from the menu specified in the hMenu parameter and copies it into the buffer passed to it in the lpString parameter