[C#]
    int AddFormFile(string FieldName, string Filename, string ContentType, System.IO.Stream FileStream, bool CloseStream);

[VB.NET]
    Function AddFormFile(ByVal FieldName As String, ByVal Filename As String, ByVal ContentType As String, ByVal FileStream As System.IO.Stream, ByVal CloseStream As Boolean) As Integer

[Pascal]
    under development

[C++]
    int32_t AddFormFile(const std::string &FieldName, const std::string &Filename, const std::string &ContentType, TStream &FileStream, bool CloseStream);
    int32_t AddFormFile(const std::string &FieldName, const std::string &Filename, const std::string &ContentType, TStream *FileStream, bool CloseStream);

[PHP]
    integer AddFormFile(string $FieldName, string $Filename, string $ContentType, TStream $FileStream, bool $CloseStream)

[Java]
    int addFormFile(String FieldName, String Filename, String ContentType, TElStream FileStream, boolean CloseStream);