I implemented a very simple menu based on vgui. it can be compiled. But the menu bar can not be displayed, why? I found
vgui : registered 'glut'
vgui : initialize 'glut'
. my vxl include oxl and vgui are compiled by g++-3.2 under linux. I remember gtk tool kit also has been installed.
I will be very appreciate if you can give me a help!

Hao Shao
Computer Vision Lab
Swiss Federal Institute of Technology (ETH) Zurich
Phone: 0041 1 6324893
Email: haoshao@vision.ee.ethz.ch