RAD Studio VCL Reference
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TBlobStream.Seek Method
TBlobStream Class | TBlobStream Members | DBTables Namespace | Description | See Also
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Resets the current position of the TBlobStream object.

Pascal
function Seek(Offset: Longint; Origin: Word): Longint; override;
C++
virtual __fastcall Longint Seek(Longint Offset, Word Origin);
Description

Use Seek to move the current position within the BLOB data by the indicated offset. Seek allows an application to read from or write to a particular location within the BLOB data. 

The Origin parameter indicates how to interpret the Offset parameter. Origin should be one of the following values:

Value 
Meaning 
soFromBeginning  
Offset is from the beginning of the BLOB data. Seek moves to the position Offset. Offset must be >= 0.  
soFromCurrent  
Offset is from the current position in the BLOB data. Seek moves to Position + Offset.  
soFromEnd  
Offset is from the end of the BLOB data. Offset must be <= 0 to indicate a number of bytes before the end of the BLOB.  

Seek returns the new value of the Position property, the new current position in the BLOB data. 

 

See Also
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