Simulate right-mouse click on bookmark in a PDF

Visual Studio 2005
.Net Version 2.0

I need to simulate a user doing a right-click on a bookmark in a PDF document, then chosing one of the options from the pop-up that appears after doing the right-click.

I can successfully obtain the handle for the bookmark, but I have not been able to simulate the mouse click. How do i do so?

I've seen some posts where contributors suggest using the SendInput call, but this requires the x/y coordinates, which I don't have. I only have the bookmark handle.

Thanks.