pub unsafe extern "system" fn CredUnPackAuthenticationBufferW( dwFlags: DWORD, pAuthBuffer: PVOID, cbAuthBuffer: DWORD, pszUserName: LPWSTR, pcchlMaxUserName: *mut DWORD, pszDomainName: LPWSTR, pcchMaxDomainName: *mut DWORD, pszPassword: LPWSTR, pcchMaxPassword: *mut DWORD) -> BOOL