public static extern bool CryptMsgGetParam(SafeCryptMsgHandle hCryptMsg, CryptMessageParameterType dwParamType, int dwIndex, out int pvData, [In, Out] ref int pcbData);
public static partial bool CryptMsgGetParam(SafeCryptMsgHandle hCryptMsg, CryptMessageParameterType dwParamType, int dwIndex, out int pvData, ref int pcbData);
public static extern bool CryptMsgGetParam(SafeCryptMsgHandle hCryptMsg, CryptMessageParameterType dwParamType, int dwIndex, out int pvData, [In, Out] ref int pcbData);