qt opengl coloring cube example-vbo edited

[saman_artorious]

To write a vbo sample I edited the qt opengl coloring cube example. What I did is to create a vao and two vbos for vertices and colors variables. Unfortunately, when program runs, it doesn't render anything. Attached file is the program, as I am only using Linux, you may not worry about any virus detections.
I would appreciate if you run this example on your system and try if you can make it give the desired output.