sqlite3_blob_bytes
—
Return The Size Of An Open BLOB
int
sqlite3_blob_bytes
(sqlite3_blob
*);
Returns the size in bytes of the BLOB accessible via the successfully opened
BLOB handle in its only argument. The incremental blob I/O routines can only
read or overwriting existing blob content; they cannot change the size of a
blob.
This routine only works on a BLOB handle which has been created by
a prior successful call to sqlite3_blob_open() and which has not been closed
by sqlite3_blob_close(). Passing any other pointer in to this routine
results in undefined and probably undesirable behavior.