Created attachment 777426 [details]
patch

I want to have some pop-up menus in my newt-based UI. A listbox in its own window works great; the only problem is figuring out where to put it (since everything else is getting laid out via a grid).

This patch adds newtComponentGetSize() and newtComponentGetPosition(), to peek at the corresponding internal fields, so I can see where the grid put my components, and then position the menu accordingly.