Drawing a 2D triangulation (solved)

[bts]

Hello,

I have already used QT, but I'm not very experienced. I need to program a window
where a 2D triangulation appears, so triangles, vertices and different colors are
involved. Additionally, it should be possible to zoom in/out.

It would be helpful if you could tell me which classes to use. If there are any
tutorials about such paint-classes, it would also be great.

Thank you!
Best regards