Hi,
I have some c++ experience but qt is something new for me. I choose for my first application in qt a simple cad like app (without advanced futures) just for drawing some vector shapes by mouse. I read a few tutorials and examples, description of several classes, so I know some basics.

I would like to ask for some directions, which classes or functions should I use for that kind of application so I could lern more about them. I know I must use QPainer.
I konw that for some this question may be stupid or to general but I hope that this section is for beginners so this is a begginer stupid guestion so please dont write me google or something like that.
Thanks