CreateParams is a property, so you'll need to construct a property to do this:
class TransLabel(Label): def get_CreateParams(self): cp = super(TransLabel, self).CreateParams cp.ExStyle = cp.ExStyle | 20 return cp CreateParams = property(fget=get_CreateParams) Unfortunately it looks like we don't get the correct dispatch to the base-class property in the super case here. Instead we stack overflow. A work around could be to either create CreateParams yourself, or get it from another label. class TransLabel(Label): def get_CreateParams(self): cp = Label().CreateParams cp.ExStyle = cp.ExStyle | 20 return cp CreateParams = property(fget=get_CreateParams) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Davy Mitchell Sent: Monday, November 27, 2006 2:11 PM To: users@lists.ironpython.com Subject: [IronPython] Subclassing a Control Hi Folks, I was doing some IronPython for the first time in ages so forgive me if I am being dumb :-) Anyway I am trying to make a transparent label WinForm control: class TransLabel(Label): def CreateParams(self): cp = super(TransLabel,self).CreateParams cp.ExStyle = cp.ExStyle | 0x20 return cp def OnPaintBackground(self,e): pass The problem is the super call fails with: Traceback (most recent call last): File K:\MyDev\PyLP\helloWorld1.py, line 69, in Initialize File K:\MyDev\PyLP\helloWorld1.py, line 22, in __init__ File , line 0, in DefaultNew##12 File , line 0, in .ctor##26 File System.Windows.Forms, line unknown, in .ctor File System.Windows.Forms, line unknown, in .ctor TypeError: issubclass: arg 1 must be a class line22 is only self.label = TransLabel() Thanks and take care, Davy Mitchell -- Davy Mitchell Blog - http://www.latedecember.com/sites/personal/davy/ Mood News - BBC News Headlines Auto-Classified as Good, Bad or Neutral. http://www.latedecember.com/sites/moodnews/ _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com