Function WinHttpOpen

pub unsafe fn WinHttpOpen<P0, P2, P3>(
    pszagentw: P0,
    dwaccesstype: WINHTTP_ACCESS_TYPE,
    pszproxyw: P2,
    pszproxybypassw: P3,
    dwflags: u32,
) -> *mut c_void
where
    P0: Param<PCWSTR>,
    P2: Param<PCWSTR>,
    P3: Param<PCWSTR>,