[PyQt] PyQT mdi tutorial for qt-editor

[giorgio.luciano at inwind.it]

I'm programmins a small software for making scientific calculations uysing PyQT 
and Python.
I'm using QTeditor which is a great help for making the dialogs. 

I'm using lots of tutorial arounds. As far as I've understood is better to keep 
separate the "Main.py" from the dialogs that I like to start using the main. 
For now everything is ok !
The problem now is that I want to use a mdi, but as 
far as I've understood there is no simple way to implement it using the 
qtdesigner.
Do someone has some link of a tutorial for that ?
Thanks in advance

Giorgio