Here's a link to a screen-capture that will help explain what I want to do:

http://www.beg.utexas.edu/coastal/wrl/del/scr2.jpg

I have a few buttons and other widgets along the top, bottom and sides of my application; the primary window is a QWidget which contains/displays a Coin3d scenegraph. When the user mouses Over some of the buttons, I want a QWidget to pop-up that will have an image and text to explain something about that button's feature ("Info Widget" in the image).

I'm using an eventFilter to detect the mouse-Over, but I don't know how I can put one widget ("Info Widget") on top of another (the Coin3d widget). All of the examples I've seen show how Widgets/etc. can be next to each other, not one on top of the other. Is this possible?