How do I send message between two processes?

Question

1.00/5 (1 vote)

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In my VC++ code,

Is it possible SendMessage() between two processes not using shared memory or socket?

For example,

A.exe send a message to B.exe which is running background.

Thank you in advance.

What I have tried:

More than 2 days wasted for this program....

Posted 22-May-17 20:09pm

Member 12330615

Updated 22-May-17 20:44pm

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Comments

Michael_Davies 23-May-17 2:38am

You do not say which operating system, Win/Linux? For Windows there are several methods of IPC, see;
https://msdn.microsoft.com/en-us/library/windows/desktop/aa365574(v=vs.85).aspx

Member 12330615 31-May-17 21:20pm

Windows,
But B.exe does not use MFC, it is not dialob based.

Mohibur Rashid 23-May-17 3:25am

try socket

2 solutions

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Member 12699051 · Answer 1 · 2017-05-22T20:44:00

Solution 1

Hi,
Search solution using WM_COPYDATA parameter to send message.
Here you can find the start of the solution:
https://stackoverflow.com/questions/2451103/use-wm-copydata-to-send-data-between-processes
Best regards

Posted 22-May-17 20:44pm

Member 12699051

LaxmikantYadav · Answer 2 · 2017-05-22T20:44:00

Solution 2

In SendMessage function pass first parameter as handle of second process.
Please refer link for more details -> Sending a message to the Main Frame Window of Another Application, given only the Process Handle[^]

Posted 22-May-17 20:44pm

LaxmikantYadav