CDBVariant::m_dwType

This data member contains the data type for the value that is currently stored in the CDBVariant object's union data member.

Remarks

Before accessing this union, you must check the value of m_dwType in order to determine which union data member to access. The following table lists the possible values for m_dwType and the corresponding union data member.

m_dwType	Union data member
DBVT_NULL	No union member is valid for access.
DBVT_BOOL	m_boolVal
DBVT_UCHAR	m_chVal
DBVT_SHORT	m_iVal
DBVT_LONG	m_lVal
DBVT_SINGLE	m_fltVal
DBVT_DOUBLE	m_dblVal
DBVT_DATE	m_pdate
DBVT_STRING	m_pstring
DBVT_BINARY	m_pbinary
DBVT_ASTRING	m_pstringA
DBVT_WSTRING	m_pstringW

Requirements

Header: afxdb.h

See Also

Concepts

CDBVariant Class

CDBVariant Members

Hierarchy Chart