Function netapi32::DsGetDcOpenA

pub unsafe extern "system" fn DsGetDcOpenA(
    DnsName: LPCSTR, 
    OptionFlags: ULONG, 
    SiteName: LPCSTR, 
    DomainGuid: *mut GUID, 
    DnsForestName: LPCSTR, 
    DcFlags: ULONG, 
    RetGetDcContext: PHANDLE
) -> DWORD