On June 17, I wrote:
>>
>> I'd like to go a step beyond getting/setting properties and invoking
>>methods and assign a new event handler to the instance
>>that's represented by the return value of GetActiveObject().
On June 17, Michael B. Wright wrote:
>
> If it is simply another layer of abstraction that you require, it might
> be easier to just roll your own proxy class.
I'm still unsure how I would associate my own event handling methods with
an Internet Explorer instance that someone else has created. If my code is
present at the creation, this is no problem, as I can create a class of my
own (as in __init__.py):
class IEEvents:
def OnVisible(self, visible):
print "Visibility's changed to ", visible
Now, I can have DispatchWithEvents() bind up the automation object along
with my event handler:
ie = DispatchWithEvents("InternetExplorer.Application", IEEvents)
Or, I can do it in two steps by creating a subclass of Internet Explorer's
existing event handling class (which I can get with getevents()) and
overriding the events of interest (also show in __init__.py) and then
associating the event handler with an instance of IE. So far, so good.
In the __init__.py example, the association between the IE instance and the
specialized event handling class is made by passing the IE instance to the
event handling class. This works because the IE instance was generated by a
call to win32com.client.Dispatch, but it doesn't work with the result of
GetActiveObject():
ie = GetActiveObject("InternetExplorer.Application")
events = InternetExplorerEvents(ie) # Won't work
or even the result of a QI with the IID set to IDispatch on the result of
GetActiveObject():
ieDispatch = ie.QueryInterface(pythoncom.IID_IDispatch)
events = InternetExplorerEvents(ieDispatch) # Won't work either
The result of invoking Dispatch is an IWebBrowser2 object (which means it's
also a DispatchBaseClass object). A DispatchBaseClass object has an
_oleobj_ attribute, which is of type PyIDispatch. I have a PyIDispatch
object, so my question is, how do I create an IWebBrowser2 object from it?
Thanks,
Kurt
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