RAD Studio VCL Reference
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TIBDSBlobStream.Seek Method
TIBDSBlobStream Class | TIBDSBlobStream Members | IBCustomDataSet Namespace | Description
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Resets the current position of the TIBDSBlobStream 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. 

 

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