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http://blog.csdn.net/zxf_feng/archive/2008/12/21/3571961.aspx
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            vStream := TMemoryStream.Create;
            try
              TBlobField(vField).SaveToStream(vStream);
              (ADest.FieldByName(vField.FieldName) as TBlobField).LoadfromStream(vStream);
            finally
              vStream.Free;
            end;


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  begin
    case wParam of
      WM_KEYDOWN:
      fEatKeystroke := (p.vkCode = VK_RETURN);
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