Difference between revisions of "BLOB READ()"
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dbapi_blob_read() | dbapi_blob_read() | ||
{ | { | ||
| − | + | int blobsize; | |
| − | + | char blobuf[8000]; | |
| − | + | if (_parinfo(1) == API_CTYPE) { | |
| − | + | blobsize = BLOB_SIZE(_parc(1)); | |
| − | + | BLOB_READ(_parc(1), blobuf, blobsize); | |
| − | + | } | |
} | } | ||
</code> | </code> | ||
Latest revision as of 11:28, 30 March 2009
PURPOSE
Read a blob
SYNONYM
api_blob_read()
SYNOPSIS
#include "dbapi.h" int BLOB_READ(fldname, blob, maxsize) <input parameters> char *fldname; /* Address of a buffer containing a blob field name */ int maxsize; /* Maximum size of the blob */ <output parameters> unsigned char *blob; /* Address of a buffer containing the blob data */
DESCRIPTION
The BLOB_READ() function will read a blob from the memo file for the fieldname specified in the current record.
EXAMPLE
The following example reads a blob into the buffer from the specified blob field.
#include "dbapi.h" dbapi_blob_read() { int blobsize; char blobuf[8000]; if (_parinfo(1) == API_CTYPE) { blobsize = BLOB_SIZE(_parc(1)); BLOB_READ(_parc(1), blobuf, blobsize); } }
