[IronPython] Overriding .NET methods within IronPython
Hey list, I think I got this right, and it seems to work, but I just feel like there is probably a better way to override a method in IP. Some time spent googling doesn't bring anything up except for IP/C# code examples containing the override keyword. For example, I want to override the Form class' OnLoad method, so I wrote a decorator to do so. class frm(Form): def __init__(self): Form.__init__(self) def override(method): def inner(*args): base = super(Form, args[0]) #args[0] is frm instance base_method = getattr(base.__thisclass__, method.__name__) method(*args) #call our method first return base_method(*args) return inner @override def OnLoad(self, evt_args): print evt_args It doesn't do anything snazzy - just prints out the EventArgs, then calls the base class Form.OnLoad. Any thoughts? Brian ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] Overriding .NET methods within IronPython
I'm not sure what I was doing wrong when this clearly simpler way wasn't working, but this pretty much answers my question: do this - Form.OnLoad(self, evt_args) Sorry for the noise. On Fri, Oct 23, 2009 at 13:45, Brian Curtin brian.cur...@gmail.com wrote: Hey list, I think I got this right, and it seems to work, but I just feel like there is probably a better way to override a method in IP. Some time spent googling doesn't bring anything up except for IP/C# code examples containing the override keyword. For example, I want to override the Form class' OnLoad method, so I wrote a decorator to do so. class frm(Form): def __init__(self): Form.__init__(self) def override(method): def inner(*args): base = super(Form, args[0]) #args[0] is frm instance base_method = getattr(base.__thisclass__, method.__name__) method(*args) #call our method first return base_method(*args) return inner @override def OnLoad(self, evt_args): print evt_args It doesn't do anything snazzy - just prints out the EventArgs, then calls the base class Form.OnLoad. Any thoughts? Brian ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
Re: [IronPython] Overriding .NET methods within IronPython
See the section on Overriding methods in http://ironpython.codeplex.com/SourceControl/changeset/view/60398#1011839 (IronPython_Main\Doc\dotnet-integration.rst) for more details on overriding, like dealing with ref params. We are working on making the info easily accessible, but for now, you can browse the content from the rst file. From: users-boun...@lists.ironpython.com [mailto:users-boun...@lists.ironpython.com] On Behalf Of Brian Curtin Sent: Friday, October 23, 2009 11:53 AM To: Discussion of IronPython Subject: Re: [IronPython] Overriding .NET methods within IronPython I'm not sure what I was doing wrong when this clearly simpler way wasn't working, but this pretty much answers my question: do this - Form.OnLoad(self, evt_args) Sorry for the noise. On Fri, Oct 23, 2009 at 13:45, Brian Curtin brian.cur...@gmail.commailto:brian.cur...@gmail.com wrote: Hey list, I think I got this right, and it seems to work, but I just feel like there is probably a better way to override a method in IP. Some time spent googling doesn't bring anything up except for IP/C# code examples containing the override keyword. For example, I want to override the Form class' OnLoad method, so I wrote a decorator to do so. class frm(Form): def __init__(self): Form.__init__(self) def override(method): def inner(*args): base = super(Form, args[0]) #args[0] is frm instance base_method = getattr(base.__thisclass__, method.__name__) method(*args) #call our method first return base_method(*args) return inner @override def OnLoad(self, evt_args): print evt_args It doesn't do anything snazzy - just prints out the EventArgs, then calls the base class Form.OnLoad. Any thoughts? Brian ___ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
