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The latest version of this topic can be found at BLOB_ENTRY_LENGTH.
Used with BEGIN_COLUMN_MAP and END_COLUMN_MAP to bind a binary large object (BLOB). Similar to BLOB_ENTRY, except that this macro also gets the length in bytes of the BLOB column.
Syntax
BLOB_ENTRY_LENGTH(
nOrdinal
,
IID
,
flags
,
data
,
length
)
Parameters
nOrdinal
[in] The column number.
IID
[in] Interface GUID, such as IDD_ISequentialStream, used to retrieve the BLOB.
flags
[in] Storage-mode flags as defined by the OLE Structured Storage model (for example, STGM_READ).
data
[in] The corresponding data member in the user record.
length
[out] The (actual) length in bytes of the BLOB column.
Example
See How Can I Retrieve a BLOB?.
Requirements
Header: atldbcli.h
See Also
Macros and Global Functions for OLE DB Consumer Templates
BEGIN_COLUMN_MAP
END_COLUMN_MAP
COLUMN_ENTRY
BLOB_ENTRY
BLOB_ENTRY_LENGTH_STATUS
BLOB_ENTRY_STATUS