[DllImport("msi.dll", CharSet = CharSet.Auto)]
public static extern int MsiGetLanguage(
[MarshalAs(UnmanagedType.LPTStr)] string szProduct,
[MarshalAs(UnmanagedType.LPTStr)] string szLang,
[MarshalAs(UnmanagedType.LPTStr)] StringBuilder lpLangBuf,
ref int pcchLangBuf
);