RTD Causing Exccel window to move to front?

[Rcik Noltemy]

So it seems. I wrote an RTD server in VB.NET. I make no
calls to Excel from RTD, except in the form of the
<callbackobject>.UpdateNotify. No matter what window I
place in from, it seems that Excel will pop-up right in
front of it a second later.

I decreased the IRTDThrottle interval to 1 from 2000.
The VB.Net code does open a socket connection for
listeneing, and one for connecting. The issue seems to
occur on sending data from Excel to RTD.

I use a formula like this:

=RTD("lsp.RTDsk",,"publish",A2,B1,B2)

where A1 = "IBM"
where b1 = "Last"
where b2 = <value> that keeps changing from a DDE Market
data source.

The RTD server I implemented, takes in the topic....sends
it over any open socket connection it initiated, and then
destroys the topic (in memory - excel will do the same on
the next tick).

Works great, except for the window popping issue

Any ideas?

Rick