Pass data from one application to another using C++ DLL/API

Question

1.67/5 (2 votes)

See more:

Let's say an application "X" provisions access to its various components by its APIs (for e.g. Reference to X's APIs).

Then we have another application "Y" which allows user to built Plugins or DLLs (for e.g. AB's ADK Guide).

Objective: Establish communication between "X" and "Y" such that they could talk to each other and exchange data - mostly one way from X to Y.

What I have tried:

I am a total noob when it comes to DLLs/APIs. My C++ knowledge is limited to High School programming basics only. Could you kindly give me some advice or refer some books.

Thank You!

Posted 24-Sep-18 18:12pm

ChimpTrader

Updated 24-Sep-18 19:09pm

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Manish K. Agarwal · Answer 1 · 2018-09-24T19:10:00

Solution 1

One of the solution in your case for sharing data across apps could be "Shared data segment"

https://www.codeproject.com/Articles/240/How-to-share-a-data-segment-in-a-DLL

There can be some local reader writer components which can check when data is updated in shared data segment and by whom.

Other solution could be use shared memory, named pipe, external files, socket etc.

Posted 24-Sep-18 19:10pm

Manish K. Agarwal

Comments

ChimpTrader 25-Sep-18 1:17am

Thank you Manish for your quick reply!

I am not aware of the techniques that you mentioned, even worse hearing them for the first time. Surely there will be different solutions for my problem but to figure out that suits the best is something I can only discern after trying various techniques.

Could you suggest a comprehensive guide book in this regard, I am comfortable in basic C/C++?

Thank you very much!

Manish K. Agarwal 25-Sep-18 1:36am

http://www.charlespetzold.com/pw5/

Also Google on various topics will help

Manish K. Agarwal 25-Sep-18 1:40am

Few links to start with:
https://www.codeproject.com/Articles/13724/Windows-IPC
https://docs.microsoft.com/en-us/windows/desktop/ipc/interprocess-communications
https://stackoverflow.com/questions/7127242/fastest-ipc-method-on-windows-7

ChimpTrader 25-Sep-18 1:43am

Lovely! Would be a marathon like challenge to my existence. Thanks... Let's see how far I succeed to grasp.