[PyQt] derive from a designer widget

[Mario Daniel Carugno]

2009/3/13, Andreas Pakulat <apaku at gmx.de>:
>  > I want that it could be as simple as derivating the 'data' class
>  > from the 'main window' class. I've read that derivating a widget
>  > from another one, makes that widget to appear inside it's parent,
>  > right ?
>
> No thats wrong. Deriving one class from another is something different than
>  adding a widget to a parent widget.

What about this ?

#!/bin/env python
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *

class Frame(QDialog):
   def __init__(self):
      QDialog.__init__(self)
      pass

class GUI(Frame):
   def __init__(self):
      Frame.__init__(self)
      b = QLabel("HOLA")
      l = QVBoxLayout()
      l.addWidget(b)
      self.setLayout(l)

if __name__ == "__main__":
   app = QApplication(sys.argv)
   ui = GUI()
   ui.show()
   app.exec_()

This snippet creates a Frame and a widget as a subclass of it.
This is enough to make the widget appear into the Frame
I want to achieve that, but with Frame being a compound widget with its
central area, and that area being the default 'container' to hold
derived widgets.
I note that one problem with this using designer, is that designer creates
widgets subclassing 'object' instead of 'QWidget' or 'QDialog'. With the
main form derived from 'object' i can't make the above subclassing example.

Thank you