Salut Alexander Zavalishin !
Dans un message de Alexander Zavalishin dat‚ du 12 Jun 97  16:04:00 il ‚tait 
di
  AZ> What is the simpliest and the most reliable way for
  AZ> the application A to check that the application B is running and to
  AZ> send some information (a set of strigs or such) to B after? (For
  AZ> example: app.B is a scalable map showing different buildings, app.A
  AZ> contains the list of these buildings, the task is to highlight a
  AZ> certain building after it's name has been selected in the app.A.)
  AZ> Shall I simply declare a message and send it to the app.B? Or shall I
  AZ> use DDE? 
You need IPC (Inter Process Communication). There are many ways of 
doing it. It depends on what you wants to do, and what plateform you'r 
using.
Personnally, I have adopted Winsock. This is not too much complicated 
and give me the option to run the different task on different computers 
without changing my code, just change the hostname (localhost or any 
host name in the world). This si quit fast and many more easier to 
program and master than the Microsoft recommanded way using COM/DCOM. 
It only require you to install a TCP/IP protocol stack on your 
computer, even if it is not connected to a lan. Using Winsock is 
compatible between 16 and 32 bit windows.
You'll find some interesting source code on my web page. Look for the 
projects TNSRV and SRV5 which is are client/server modules you can 
adapt to your needs (those samples are based on Telnet just for the 
ease of testing, but you only have to change the port number to use 
any thing else). http://www.rtfm.be/fpiette
Amiti‚s,
{-Francois Piette-}
francois.piette@ping.be
http://www.rtfm.be/fpiette
--- SvFido 1.32
---------------