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Appendix
Information on Visual C++ Data Type
This section provides information on the data type used with
++
Visual C
.
For more information, refer to the Microsoft Visual C
documentation.
VARENUM usage key,
[V] - may appear in a VARIANT
[T] - may appear in a TYPEDESC
[P] - may appear in an OLE property set
[S] - may appear in a Safe Array
Item
VT_EMPTY
VT_NUL
VT_I2
VT_I4
VT_R4
VT_R8
VT_CY
VT_DATE
VT_BSTR
VT_DISPATCH
VT_ERROR
[V]
[T]
[P]
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
3
++
6.0
[S]
Value
nothing
SQL style Null
*
2 byte signed int
*
4 byte signed int
*
4 byte real
*
8 byte real
*
currency
*
date
*
OLE Automation
string
*
IDispatch
*
SCODE
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