Re: [python-win32] OnItemSend cancel help

[Mark Hammond]

In general, you should simply return the value of that variable.  You didn't include the next line of the makepy snippet which includes the types, but a possibility is that the event handler is actually a function rather than a "sub" - so maybe something like:

 

return 0, True

 

should be used - returning 0 for the function itself, with the True being for cancel.

 

Wish I could be more help...

 

Mark

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of d tiu
Sent: Friday, 10 November 2006 7:15 AM
To: python-win32@python.org
Subject: [python-win32] OnItemSend cancel help

Hi all,
I'm writing an outlook addin, trying to stop email sends on certain
conditions.  I'm using OnItemSend callbacks that has a cancel
parameter which if set to True, will cancel the send.  It's not
working :(.  I'm calling:
 self.applicationEvents = DispatchWithEvents(application, ApplicationEvent)
with
 class ApplicationEvent:
   def OnItemSend(self, item, cancel):
      print "OnItemSend"
      cancel = True
and desperate, also tried:
 class ApplicationEvent:
   def OnItemSend(self, item, cancel):
      print "OnItemSend"
      cancel = True
      return cancel

I've confirmed that the handler is getting called, but the cancel
parameter seems like it's not getting back to outlook.

The makepy has
#  def OnItemSend(self, Item=defaultNamedNotOptArg,
Cancel=defaultNamedNotOptArg):
as the prototype on gen_py\ApplicationEvents.py.

Any ideas?  One thing is that the VB call is
 Sub object_ItemSend(ByVal Item As Object, Cancel As Boolean)
which I suspect Cancel is passed by reference?  If so, is this handled
by the mechanisms in DispathWithEvents?  If not, how does one do it?

Thanks
Dave

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