long binary data info

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,
Firstly thanks to Stephen Lebans for helping with my previous problem.
Now, I would just like some information. I know that when a jpeg is stored
as long binary data, Access puts some kind of header file with this. What I
would like to know is what goes into this header file? and if it is useful,
how could I extract the header so that i can view the header?

Thanks
 
No, Access does NOT prepend a Header to data stored simply within a Long
Binary field.
Yes, for OLE objects, Access does prepend a Header to the data. If you look
at the source code behind the ExtractInventoryOLE solution on my site you
will find a detailed explanation for the header.
http://www.lebans.com/oletodisk.htm
--

HTH
Stephen Lebans
http://www.lebans.com
Access Code, Tips and Tricks
Please respond only to the newsgroups so everyone can benefit.
 
The data type in the table is OLE object, but the field shows as "long binary
data". I'm sure I read somewhere that is puts a header to the data.
Currently looking at your source code
 
If in Table view the field shows Long Binary Data then it is not an OLE
object. An OLE object would genreally read as the name of the Application
that inserted the object generally followed by the document/object type
name.
Double click directly in the field in Table view. What happens?

--

HTH
Stephen Lebans
http://www.lebans.com
Access Code, Tips and Tricks
Please respond only to the newsgroups so everyone can benefit.
 
Back
Top