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how to load a blobfield from a firebird table into an image

Posted on 2014-04-06
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Last Modified: 2014-04-12
Hi, can anyone help me how to load the value of a blobfield into an image ?

thx
Mario
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Question by:marioway
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4 Comments
 
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Expert Comment

by:NickUpson
ID: 39981736
you might do better asking in the interbase/firebird database area.
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Expert Comment

by:pcelba
ID: 39981831
Also if the code should be in Delphi then I would recommend Delphi zone...

OTOH, you could use FoxPro because the code is then very simple:
lnHandle = SQLCONNECT()
IF lnHandle > 0
  lnResult = SQLEXEC(lnHandle, "SELECT YourBlobField FROM YourTable WHERE SomeCondition", "cOutput")
  IF lnResult > 0
    *-- Save blob from the first record to image file
    SELECT cOutput
    GO TOP
    COPY MEMO YourBlobField TO d:\path\imagefile.ext
  ELSE
    *-- Process error
  ENDIF
  = SQLDISCONNECT(lnHandle)
ENDIF

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Accepted Solution

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marioway earned 0 total points
ID: 39982787
Hi guys, I found my own solution , works fine for me

procedure TIkoonfact.DBGrid1DblClick(Sender: TObject);
var Blobstream: TMemorystream;
    Bitmap: TBitmap;
    Field: TBlobField;
begin
 with Datamodule1 do begin
     //inladen opgeslagen beeld
  try
   Blobstream := TMemoryStream.Create;
   Bitmap := TBitmap.Create;
   Field := TBlobField(Foto1query.FieldByName('FOTOKES'));
   Field.SaveToStream(Blobstream);
   Blobstream.Position := 0;
   Bitmap.LoadFromStream(Blobstream);
   Image2.Picture.Assign(Bitmap);
  finally
   Blobstream.Free;
   Bitmap.Free;
  end;
 end;
end;

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Author Closing Comment

by:marioway
ID: 39995871
I did not get a solution to my question.
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