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On 21/09/12 14:44, Jörgen Hägglund wrote:
> At this point I get an access violation in SQLite3.dll (reading of
> address 00000008)

You are reading the third member of a structure that is NULL.

You should use a debugger that catches this sort of thing and lets you
examine what is going on.  It is also a good idea to use memory debugger
tools.  (The Linux tools are very good at both of those, Windows is
considerably less productive.)

Virtual tables can be very simple to write once you have the glue done
correctly.  For example here is one in Python that provides access to the
files in a bunch of directories where most of the columns correspond to
struct stat members:

 http://apidoc.apsw.googlecode.com/hg/example.html#example-vtable

Roger
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