Solved

2 programs communication

Posted on 2006-10-30
3
357 Views
Last Modified: 2010-05-18
Hi,

I have an exe file. This is a program ,that starts when windows start up. It is running in background and is visible in system tray. I have another program, that I want to connect to the first one.

I added an atl simple object to the project, added an interface and a function and recompiled it. The name of atl object is SessionManager.

I added these two lines in second prorgram:

ISessionManager * pSessionManager;
HRESULT hr = CoCreateInstance(CLSID_SessionManager, NULL, CLSCTX_ALL, IID_ISessionManager, (void**)&pSessionManager);
pSessionManager->Test();
pSessionManager->Release();

When first program is running, second program throws error hr =  -2147467262: E_NOINTERFACE
When first program is not running, second program throws error I get hr =  -2147221164: class not registered.

So I guess that second program can detect the first one, but for some reason it can not use it.

Can you help me?
Thank you.
0
Comment
Question by:GiedriusS
3 Comments
 
LVL 11

Expert Comment

by:DeepuAbrahamK
ID: 17834727
When first program is not running, second program throws error I get hr =  -2147221164: class not registered.
Did you try registering your application?
Go to start->Run and execute these:
RegServer /u "path\your application.exe" // Un regsiter
RegServer "path\your application.exe"       // Register

Best Regards,
DeepuAbrahamK
0
 
LVL 39

Accepted Solution

by:
itsmeandnobodyelse earned 200 total points
ID: 17835488
>>>> Did you try registering your application?

The calls to register an application is

     your_application_full_path /regserver

To unregister you need

     your_application_full_path /unregserver


To register a dll call

   regsvr32 your_dll_full_path

To unregister a dll

   regsvr32 /u your_dll_full_path


Note, by registering you write the interface definition to the registry.

>>>> I have another program, that I want to connect to the first one.

I don't know what kind of communication you need, but normally a piece of shared memory where there are separated regions for both execuatbles to write information is easier to handle than using ATL and COM.

Regards, Alex



   

0
 

Author Comment

by:GiedriusS
ID: 17840315
that worked fine.
0

Featured Post

Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question