[#BloombergLP-bdlbb-InBlobStreamBuf-seekoff]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlbb.adoc[bdlbb]::xref:BloombergLP/bdlbb/InBlobStreamBuf.adoc[InBlobStreamBuf]::seekoff
:relfileprefix: ../../../
:mrdocs:

Set the location from which the next I/O operation indicated by the optionally specified `which` mode will occur to the specified `offset` position from the location indicated by the specified `fixedPosition`. Return the new offset on success, and `off_type(‐1)` otherwise. `offset` may be negative. Note that this method will fail if `bsl::ios_base::out` is set.

== Synopsis

Declared in `<bdlbb_blobstreambuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
pos_type
seekoff(
    off_type offset,
    std::ios_base::seekdir fixedPosition,
    std::ios_base::openmode which = bsl::ios_base::in | bsl::ios_base::out) override;
----


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