Communication between processes (IPC)

[Dzirt 0]

Hello, please, can you point me to the inter-process communication example. I need to send data between processes: simple data, if it is possible, streams, custom objects. I am using OmniThreadLibrary to do all this to communicate between threads, if it is possible to do with processes?

Thanx in advance!

[RonaldK 18]

Shared Memory:

https://stackoverflow.com/questions/5646202/sharing-data-array-between-two-applications-in-delphi

[Primož Gabrijelčič 223]

Alternatives:

• Named pipes, https://docs.microsoft.com/en-us/windows/desktop/ipc/named-pipes
• TCP/IP
• Network DDE, https://docs.microsoft.com/en-us/windows/desktop/ipc/network-dynamic-data-exchange
• Mailslots, https://docs.microsoft.com/en-us/windows/desktop/ipc/mailslots

 

 

[limelect 48]

Many years ago with D6 i used TmdMailSlot very successful .

Here you can download it

https://torry.net/authorsmore.php?id=152

[astral2k5 2]

I'm using this component, works really well and has some demos too:

http://francois-piette.blogspot.com/2013/04/inter-process-communication-using-pipes.html

[Dzirt 0]

Thank you all for the clarification!

Have a nide day!

[Edwin Yip 154]

Also check:

Cromis.IPC, excellent, but the author's website's no longer available.

https://torry.net/authorsmore.php?id=7711

 

https://github.com/kami-soft/NamedPipeExchange

[toms 29]

14 minutes ago, edwinyzh said:

Also check:

Cromis.IPC, excellent, but the author's website's no longer available.

 https://torry.net/authorsmore.php?id=7711

 

https://web.archive.org/web/20170503103849/http://www.cromis.net/blog/downloads/cromis-ipc/

[Jacek Laskowski 57]

23 hours ago, Primož Gabrijelčič said:

Alternatives:

• Named pipes, https://docs.microsoft.com/en-us/windows/desktop/ipc/named-pipes
• TCP/IP
• Network DDE, https://docs.microsoft.com/en-us/windows/desktop/ipc/network-dynamic-data-exchange
• Mailslots, https://docs.microsoft.com/en-us/windows/desktop/ipc/mailslots

 

 

from Microsft site:

 

" [Network DDE is no longer supported. Nddeapi.dll is present on Windows Vista, but all function calls return NDDE_NOT_IMPLEMENTED.] "

[Primož Gabrijelčič 223]

@Jacek Laskowski, thank you for the correction. I will try to remember that in the future 🙂

[Remy Lebeau 1421]

Another alternative for IPC on a single computer is the WM_COPYDATA message, see Using Data Copy.

3 hours ago, Jacek Laskowski said:

from Microsft site:

 

" [Network DDE is no longer supported. Nddeapi.dll is present on Windows Vista, but all function calls return NDDE_NOT_IMPLEMENTED.] "

Network DDE across multiple computers is no longer supported, but Local DDE on a single computer is still supported.

Edited March 1, 2019 by Remy Lebeau