Member information

Specify the following information about the internal members of your opaque data type:

• Name. Must be unique within the opaque data type.
• Data structure. Select from the list, which includes any extended data types you have defined or imported in the project and the data structures that correspond to the programming language you choose.
• Array size. Specifies the number of components and subcomponents.

The following table maps the DataBlade® API data structures listed in the Opaque Type wizard to their external programming language equivalents.

DataBlade API data types	C and ESQL/C data types	ActiveX data types
gl_wchar_t	char	BSTR
mi_boolean	boolean	BOOL
mi_char	char	BSTR
mi_char1	char	BSTR
mi_date	int	BSTR
mi_datetime	dtime_t	BSTR
mi_decimal	dec_t	BSTR
mi_double_precision	double	double
mi_int1	char	short
mi_int8	ifx_int8_t	BSTR
mi_integer	int, long	long
mi_interval	intrvl_t	BSTR
MI_LO_HANDLE	ifx_lo_t
mi_money	dec_t	BSTR
mi_numeric	dec_t	BSTR
mi_real	float	double
mi_smallint	short	short
mi_string	char	BSTR
mi_unsigned_char1	unsigned char	short
mi_unsigned_int8	ifx_int8_t	BSTR
mi_unsigned_integer		long
mi_unsigned_smallint	uint2	short
mi_wchar	uint2	BSTR

If you choose to create a variable-length opaque data type, a member is automatically added as an mi_int1 of variable size. Change the mi_int1 data structure to be the one you need. Be sure to list the variable-length member last.