Location: Symbol Reference > Classes > TJwHash Class > TJwHash Methods > RetrieveHash Method > TJwHash.RetrieveHash Method (Pointer, Cardinal)
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TJwHash.RetrieveHash Method (Pointer, Cardinal)
TJwHash Class  TJwHash Members  RetrieveHash Method  Send Feedback
Pascal
procedure RetrieveHash(Hash: Pointer; var Len: Cardinal); overload;
Parameters
Parameters 
Description 
Hash: Pointer 
Specifies the storage in which to put the computed hash value  
var Len: Cardinal 
Specifies the size of Hash. The procedure will raise an exception if Len is not big enough. 
Description

RetrieveHash computes the hash of the data previously added to the hash using HashData . After a successful call to this function you cannot add more data to the hash. Any additional calls to HashData will fail.

Exceptions
Exceptions 
Description 
EJwsclHashApiException 
will be raised if the underlying Windows call fails because the specified buffer is to small or for other reasons. 
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