Sources_For_Win/ParaView/Lib/site-packages/win32/Demos/dde/ddeserver.py

# 'Request' example added jjk  11/20/98

import win32ui
from pywin.mfc import object
import dde

class MySystemTopic(object.Object):
	def __init__(self):
		object.Object.__init__(self, dde.CreateServerSystemTopic())

	def Exec(self, cmd):
		print("System Topic asked to exec", cmd)

class MyOtherTopic(object.Object):
	def __init__(self, topicName):
		object.Object.__init__(self, dde.CreateTopic(topicName))

	def Exec(self, cmd):
		print("Other Topic asked to exec", cmd)

class MyRequestTopic(object.Object):
	def __init__(self, topicName):
		topic = dde.CreateTopic(topicName)
		topic.AddItem(dde.CreateStringItem(""))
		object.Object.__init__(self, topic)

	def Request(self, aString):
		print("Request Topic asked to compute length of:", aString)
		return(str(len(aString)))

server = dde.CreateServer()
server.AddTopic(MySystemTopic())
server.AddTopic(MyOtherTopic("RunAnyCommand"))
server.AddTopic(MyRequestTopic("ComputeStringLength"))
server.Create('RunAny')

while 1:
	win32ui.PumpWaitingMessages(0, -1)