We help IT Professionals succeed at work.
Get Started

COM Interoperability

Last Modified: 2013-11-17
I have a VB.Net dll and a C++ BHO for IE 7. I need to consume events in my BHO, generated by the dll.

I am using IDispatch interface in an ATL COM. I've tried many ways and I couldn't find a solution.
When I use ADVISE I get E_NOINTERFACE or E_INVALIDARGS with different Implementations.

I'm attaching samples of what I've tried and what happened in each...If I do a query it works, but I get the error when I use ADIVSE, after finding Conexion Point is OK.

Watch Question
This problem has been solved!
Unlock 1 Answer and 3 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE