Passing data between C++ Applications

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3.00/5 (1 vote)

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C++

I want to know how to Pass data between two separate c++ MFC running applications.

Posted 22-Nov-11 18:54pm

SameeraMadhawa

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Sergey Alexandrovich Kryukov 23-Nov-11 2:11am

Why?
--SA

Albert Holguin 23-Nov-11 9:12am

Why not?

2 solutions

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**JF2015** · Answer 1 · 2011-11-22T19:05:00

Solution 1

Hi,

you can do this using sockets or using "SendMessage". For more informations see these two links:
http://www.eggheadcafe.com/microsoft/VC-MFC/30820801/how-do-i-best-pass-data-between-two-programs.aspx[^]
http://www.codersource.net/mfc/mfc-advanced/mfc-ipc-wm_copydata.aspx[^]

Posted 22-Nov-11 19:05pm

JF2015

Comments

Sergey Alexandrovich Kryukov 23-Nov-11 2:14am

...or named pipes, or shared memory with some synchronization IPC like named Mutex, or MSMQ, or "PostMessage"... what else?
--SA

Stefan_Lang 23-Nov-11 4:06am

You forgot 'store in files' ;-)

JackDingler 23-Nov-11 8:00am

The Registry and databases...

Stefan_Lang 23-Nov-11 8:05am

Woot, the registry... you win! :-)

I remember a time when I entered my monthly report into an Excel sheet, printed it out, and handed it to a secretary, who then typed it into an Access database. Does that count? :-D

JackDingler 23-Nov-11 8:10am

Sneakernet counts. :)

I pass my trophy to you good sir!

elgaabeb · Answer 2 · 2011-11-22T22:35:00

Solution 2

Hi,

Hi there are several technique for inter process communication depending also on the OS you are running on.

For Unix :
Signals
Pipes
Message Queues
Sockets
Semaphores
Shared Memory

For detailed information :

IPC Linux[^]

For Windows there :

Clipboard
COM
Data Copy
DDE
File Mapping
Mailslots
Pipes
RPC
Windows Sockets

For detailed information :

IPC Win[^]

Posted 22-Nov-11 22:35pm

elgaabeb

Comments

CPallini 23-Nov-11 4:37am

My 5. However UNIX/Linux info is insignificant for the OP.

elgaabeb 23-Nov-11 4:43am

Yes I see. Thx for your comment.

Albert Holguin 23-Nov-11 9:11am

You're missing some of the important ones like messages in Windows. ...Tried to change my 3 vote to a 4 since you do have a lot of info, but I guess I can't :(

Albert Holguin 23-Nov-11 9:17am

Nevermind, it let me change it now... ::odd::

elgaabeb 23-Nov-11 9:28am

I think that mailslot mechanism includes windows messaging. It's Ok for the vote it is already 4'd :).

Albert Holguin 23-Nov-11 9:31am

It doesn't, mailslots act more like shared files... I was finally able to change my vote, reported as bug that I couldn't change it right away.

elgaabeb 23-Nov-11 9:36am

ok thx for ur comment.

Albert Holguin 23-Nov-11 9:44am

thanks for you solution... :D