[DllImport("Credui.dll", SetLastError = true)]
public static extern CREDUI_RETURN CredUnPackAuthenticationBuffer(
CREDUI_INFO pUiInfo,
IntPtr pAuthBuffer,
uint cbAuthBuffer,
StringBuilder pszUserName,
uint ulUserMaxChars,
StringBuilder pszDomainName,
uint ulDomainMaxChars,
StringBuilder pszPassword,
uint ulPasswordMaxChars
);