I got myself a heavy duty query that takes about 10-20 seconds to
execute. So of course I moved the query into a separate, background
thread and just had it populate a collection of data structures and I
set my thread-mode to Multi-Processor and Critical-Section.

This is wonderful -- the query executes in the separate thread and my
GUI is still responsive and whatnot.

HOWEVER -- if I were to execute a query on the main thread (a small,
itty-bitty query) while the background-thread's query is executing, the
main thread hangs up. It needs to wait for the background-thread's query
to finished executing before it can execute the main thread's query.
So, I thought that was a bit odd and that maybe it was a problem on the
server/database side not being able to handle 2 connections belonging to
the same process. So I forced the background-thread to connect to a
different server. But that did not change anything at all.

So now my question --- is there a mutex on the function HExecuteSQLQuery
in the WinDev framework? - or what else would be preventing me from
having 2 queries execute at the same time on completely different
servers and databases?