Tree Control select method called itself

[MFCQuery]

I have tree control on left pane and list control on right pane. For list control i'm displaying a pop up menu when i right click on any item in list control. When i right click on any item in list control and select any option from pop menu, tree control select item(TVE_SELECT) is called automatically. This TVE_SELECT is called for the selected item in tree control.

Suppose i create tree/list control in one exe and i want to do all tree/list control operations like insert items, display popup menu etc from a dll then how to solve above problem from dll code. I dont have exe code.

I want to know how to refresh tree/list control from dll? And how to stop tve_select from dll if it called automatically.