ICreatePropertyManagerPage - how to make page appear in top or bottom panel

Hello,

I'm working on a plugin using .net. We've added a tree control in a feature manager tab in the top panel, and open PropertyManagerPages to show properties for things in our plugin.

Sometimes the property page opens in the top panel, sometimes in the bottom. We want it to be consistent and always open in the top panel.

It seems that if something is selected it will open in the bottom panel, if nothing selected then the top, but I can't see this behaviour documented anywhere.

Any ideas for how to control where the page appears?

ta,

rob.

SolidworksApi macros