--- In firebird-support@yahoogroups.com, Richard Wesley <hawkfish@...>
wrote:

>
> I am no expert on this, but it sounds to me like there is a
> disagreement about calling conventions for the callback function.

Hi Richard,
I don't think that's it. I used "stdcall" in this case, which is
correct for windows. Remember, the first callback worked. All the
library had to do was call the same function back again, something
that it had already done successfully, so the problem is occurring
after the first callback and before the next one.

I now know that I can work around this with isc_database_info () but
this issue should still be investigated. Anyone care? Should I
repeat this on the firebird issue tracker?