[Qt-creator] Drawing on QWidget

[Alex Williams]

> The induction from "I could not find it" to "it is (generally) hard to find"
> is lacking a proof. [I doubt there is one as I have a counter example:
> I found that page within two minutes without ever seing it before]

> And, as a really subjective point: Given your wxWidgets code below I am
> fairly sure you knew that you had to create a widget for "such a
> primitive action as drawing something". wxPanel is a widget, isn't it?

Please, stop this... don't worry & relax... :) wxPanel - i'm just
dropping this widget on form and no more actions required. I didn't
knew that NOW for painting we must create our own widget. That's all.
Thanks to Coda Highland, I know that this is for performance reason.

Anyway, there is no clear path from QPainter to QWidget, and no
information about painting in context of Qt Creator. Just search in
samples and internet - if you find this info you will be a hero and I
you deserve medal ^_^