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About Syed Rizwan Muhammad Rizvi
Expertise
I can answers questions regarding web based and desktop based programming in VB.Net. Which can include SOAP, XML, Custom Controls, COM Interoperability etc.

Experience
Have been working in this specific area for last 2 years previously I was a VB 6 Developer with experties in other languages as well. Total 10 years of programming experience.

 
   

You are here:  Experts > Computing/Technology > Basic > VB.NET > Interoperability

Topic: VB.NET



Expert: Syed Rizwan Muhammad Rizvi
Date: 7/14/2007
Subject: Interoperability

Question
QUESTION: Hi
How can I write a program that can handle other programs' events. For example I give program (or process) A as input to B and when I click a button on A, B says A.button1.click
or something like this. I guess this is what you call Interoperability.
If it is not possible, how can I control all events of my applications both in their own event handlers and also one global handler. I mean any event has its own handler and also one global handler that shows a msgbox which says which event has occurred just now. I don't want to write something like this at the beginning of all handlers:
msgbox(event)
I hope I could mention what I mean clearly.
Thanks a lot

ANSWER: Nice thinking but reality is far from your thought. only if any object itself supports global events you would be able to achieve what you want. otherwise its beyond practicality.

Moreover, you can have one procedure handling more than one events.

I must you can although achieve this if you are writing your own custom objects but not with any ready made objects.

If you need further clarifications please do ask.

---------- FOLLOW-UP ----------

QUESTION: Hi
I know that program A MUST give access To B in order to share anything by socket programming, shared memory, named pipes,etc.
Let me tell you exactly what I want to write:
I want to write a Help developer program! as a component or something:
You add this component to your project, run you program, it makes a separate process that traces any action you do to your base program's forms and provides a help document by collecting some descriptions from you for each event occurred.
At first I decided to white a separate program B that gets program A (exe) as input. Now that I think It is probably impossible, I am thinking of making a component to be added to a BARE project (Code) not EXE.
What do you think about this project? Is there any similar application developed that does something like this? How can I handle all events in the component? ( I don't know their name) I mean the event that is handled is dynamic for the component.
Thanks a lot for your help

Answer
I see where you are going. This is very easily achievable. in VB.net you drop a control on a form or a container. the "Parent" would always be accessible using the "Container" or "Parent" property you can cast the object into a Form object and then add handlers to manage runtime events seamlessly to client application.

If  you need more input let me know.

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