Function MsiGetProductInfoW 

pub unsafe fn MsiGetProductInfoW<P0, P1>(
    szproduct: P0,
    szattribute: P1,
    lpvaluebuf: Option<PWSTR>,
    pcchvaluebuf: Option<*mut u32>,
) -> u32
where
    P0: Param<PCWSTR>,
    P1: Param<PCWSTR>,