| title | BLOB_NAME_LENGTH | Microsoft Docs | |||||||||||||
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| ms.date | 11/04/2016 | |||||||||||||
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| ms.assetid | 38150260-a127-486d-a7ab-0d01b731b6fd | |||||||||||||
| caps.latest.revision | 7 | |||||||||||||
| author | mikeblome | |||||||||||||
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Used with BEGIN_COLUMN_MAP and END_COLUMN_MAP to bind a binary large object (BLOB). Similar to BLOB_NAME, except that this macro also gets the length in bytes of the BLOB data column.
BLOB_NAME_LENGTH(
pszName
,
IID
,
flags
,
data
,
length )
pszName
[in] A pointer to the column name. The name must be a Unicode string. You can accomplish this by putting an 'L' in front of the name, for example: L"MyColumn".
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.
Header: atldbcli.h
Macros and Global Functions for OLE DB Consumer Templates
BEGIN_COLUMN_MAP
END_COLUMN_MAP
COLUMN_ENTRY
BLOB_NAME
BLOB_NAME_LENGTH_STATUS
BLOB_NAME_STATUS