I am having great difficulties sending a message from one application to
another on a NT machine (NT 4.0 service patch 2).

The same two applications communicates fine on a Win95 machine.

I have tried various methods from DDE, WM_COPYDATA to user registered
messages to no success.

I am using VC 5.0 without the patch.

If anyone can shed any light on this matter, I would be very grateful
Many thanks in advance,
Andrew Nyunt

If the latter, I'l take advantage of this opportunity to suggest the
example program on my web page that uses FindFirstChangeNotification to
signal an app when another app (in another computer, on Mars, etc)
writes a little file for it. At work we have found this is the simplest
and most direct way to send and receive small messages.

The example is source code for an ActiveX control called DirNotify.

  --  Phlip
====== http://users.deltanet.com/~tegan/home.html ======
  --  What do you suppose the odds are Bill Gates uses
 Microsoft Money 97?  --

Andrew,

If you are trying to trigger events -- why not use synchronization
objects liek mutexes or events.  If you neeed to share data try memory
mapped files or shared memory or named pipes.

Charles Steinhardt[MVP]