Query by point

[Jeff Portwine]

> The error message looks like Mapserver is assuming your layer is a shape
> file layer but that > the DATA section of your layer has no shape file
> name associated with it.  What type of
> layer is it you're attempting to query?

I'm trying to query a points layer.     I read a bunch of long/lat
coordinates from a database and have it plot dots on my map at those
locations.   I want to be able to click on those and bring up information
about those points, or ideally link to another web page.    I thought I
could just query that point and if they were clicking on one of the "points"
i had plotted bring up that information, otherwise just output "no location
found"  or something.

I guess I really don't understand how to do a query, and the documentation
on it just doesn't make anything clear at all... and I am having trouble
finding any examples of this sort of thing.   The GD_Demo does something
like this but I can't seem to find the code that does it, or I may just not
be looking for the right thing and missing it.

Thanks,
Jeff