From: hyoon at bigfoot.com (Hoon Yoon)
Date: Tue, 13 Apr 1999 18:22:29 -0400
Subject: Event in COM
Message-ID: <3713C3A5.59CB36E5@bigfoot.com>
Content-Length: 2414
X-UID: 171                                                  

Hi,

  Can anyone show me some code or recommend me a book for this problem?
I look through the newsgroup and tried to read the source, but I cannot
figuire it out. (Thanks in Adv)
  I am trying to write an event handler for a ocx control that receives
real time data. Obviously, I cannot retrieve anything without event
handelers.
after following:
>> import win32com.client
>> rR = win32com.client.Dispatch('RTLIST.RTList')

----
Obvious place for me to do this is at
gen_py/xxxxxxx-0900000--33242432.py (something like it)
by uncommenting those lines and writing it in, but I would like to write
a class by inheriting it and overwriting it and keep these things
general as possible.

class _DRTListEvents:
	"Xyris RTList Control events"
	CLSID = pythoncom.MakeIID('{122B0CF2-C843-11CF-8925-00AA00575EBE}')
	_public_methods_ = [] # For COM Server support
	_dispid_to_func_ = {
		        3 : "OnChangeEx",
		        4 : "OnErrorEx",
		        1 : "OnSnapComplete",
		        2 : "OnChange",
		        5 : "OnChangeVnt",
		}

	def __init__(self, oobj = None):
		pass
	def _query_interface_(self, iid):
		import win32com.server.util
		if iid==self.CLSID: return win32com.server.util.wrap(self)

	# Handlers for the control
	# If you create handlers, they should have the following prototypes:
#	def OnChangeEx(self, ItemIndex=defaultNamedNotOptArg,
ItemName=defaultNamedNotOptArg, ItemValue=defaultNamedNotOptArg,
ItemStatus=defaultNamedNotOptArg, ChangeType=defaultNamedNotOptArg):
#		"Occurs whenever real-time update is made to an item in the list"
#	def OnErrorEx(self, ErrorCode=defaultNamedNotOptArg):
#		"Occurs when RTList experiences an error communicating with the
real-time data source"


Help!

-- 
*****************************************************************************
S. Hoon Yoon (Quant) Merrill Lynch Equity Trading, 
yelled at yahoo.com hoon at bigfoot.com(w)
"Miracle is always only few standard deviations away, but so is
catastrophe."
* Expressed opinions are often my own, but NOT my employer's.
"I feel like a fugitive from the law of averages."    Mauldin
*****************************************************************************
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