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How to Send message to a service application or process run in other user.

Posted on 2006-07-02
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Last Modified: 2012-06-21
Hi,
How can i send message to service application?
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Question by:MohammadrezaH
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TheRealLoki earned 125 total points
ID: 17028004
What you are looking for is inter-process communication

You could also use sockets (e.g. TCP/IP) - I'm seeing more and more processes use this method.
Simply drop a TWSocket, or TidTCPCLient or some other TCp server socket onto your service datamodule and handle the requests from a TCP client.

There are a lot of people who use RemObjects, which supports many connection methods, encryption, etc.
http://www.remobjects.com/page.asp?id={364BA043-7A12-4453-8F96-97BDA56BC0E0}
(EE may not get this link right so copy it manually from above)

here's how to do it with WM_COPYDATA
http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_20280702.html?query=wm_copydata&topics=85

If you can get to grips with it, you can use COM/DCOM
I had this going fine. 1 side note was that if you connected via DCOM remotely, and the service was nt running, it would start it.
Sometimes you have to mess with DCOMCNFG.exe to get things right though.

If the service is going to be logged on as the same username as the logged on user, you can use sharedmemory
(you can do it no matter what user ison, but have to do a bit more code)
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