[IronPython] [Newbie] Problem with Getting Started code
Jimmy.Schementi at microsoft.com
Sat Mar 6 10:44:10 CET 2010
> I've been trying the Getting Started example code (from
> http://ironpython.net/browser/gettingstarted.html) but I get an error
> message. The message is:-
> TypeError: unsupported operand type(s) for +: 'NoneType' and 'function'
> and the code that causes it is this (marked line appears to be the cause of
> the error):-
> <input id="button" type="button" value="Junk 2 - Say Hello!" />
> <script type="text/python">
> def button_onclick(s, e):
> window.Alert("Hello from Python!")
> --> document.button.onclick += button_onclick
> Can anyone explain what the correct code would be?
Sorry for the confusion; that was recently changed to:
document.button.events.onclick += button_onclick
This is because the following is ambiguous as to which is an event and which is a property (and Silverlight doesn't provide a reliable way to distinguish the two):
So a new "events" method has been added to "HtmlObject", which allows for hooking arbitrary events. The documentation will be updated shortly.
Note: you'll have to use the latest bits to see this behavior; previous builds you'd have to do it the long way:
from System import EventHandler
from System.Windows.Browser import HtmlEventArgs
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