Calling events or methods from outside the owning class in C++

Question

0.00/5 (No votes)

See more:

I am doing an ATL Project in VC++ 2005 to use as ActiveX in VB6. I added methods, properties and events following the steps in this tutorial: A Beginner Tutorial for Writing Simple COM/ATL DLL and Using it with .NET [^]. Everything is working fine while I'm working inside the class. But now I need to call an event or method of the class but from a global method?

How can I do this?

Thanks.

Posted 28-Nov-11 0:31am

enigmax_86

Updated 28-Nov-11 1:25am

Richard MacCutchan

v2

Add a Solution

3 solutions

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)

Paul M Watt · Answer 1 · 2011-11-28T06:41:00

What language do you want to make the call from a global function?

If you mean VB6, you will need to reference your new COM object in your VB6 project, and create an instance of the COM object like this:

VB

Dim objA as New YourATLComObjectName

objA.YourFunction()

If you mean C++, you will need to call ::CoCreateInstance with the GUID for your object.

The two things you will need in place to make sure your VB project can see the object:

1) The DLL needs to be registered which happens by default when VS compiles it. When you install it on a users machine you use regsvr32.
2) The DLL needs to be referenced as one of the resources that you bring into your project.

Richard MacCutchan · Answer 2 · 2011-11-28T01:26:00

Solution 1

Please use the forum at the end of the article so the author can see it.

Posted 28-Nov-11 1:26am

Richard MacCutchan

Selva K · Answer 3 · 2011-11-30T18:14:00

Solution 3

Use scope resolution operator ( :: ) to access the global variables

Posted 30-Nov-11 18:14pm

Selva K

v2