internal static extern int Copy(Handle hfdi, string pszCabinet, string pszCabPath, int flags, PFNNOTIFY pfnfdin, IntPtr pfnfdid, IntPtr pvUser);
internal static extern int Copy(IntPtr hfdi, string pszCabinet, string pszCabPath, int flags, PFNNOTIFY pfnfdin, IntPtr pfnfdid, IntPtr pvUser);