Does :modal nil in CAPI:display-dialog work in Windows?

In LWW 6, I'd like to use display-dialog in order to take advantage of 
its ability to position the dialog relative to its parent (in the :top 
:right).  But I'd like it to be non-modal.  Using display-dialog with 
:modal nil creates a modal dialog.

An alternative is to create an interface, find the geometry of the 
parent and the size of the dialog and position it using :best-x and 
:best-y.  But it would be easier to use display-dialog.

Mitch Berkson