Subclassing (hooks) an, outside your own program, event or routine

[Marc Kammersgaard]

I know now how to subclass a form or a control, which i have created, But
say you want to subclass an outside program to intercept events or rutinecalls,
and then respond to them from my program, before sending messages to the
outside program. Is that possible? If so then please be so kind and give
an example.

I have heard that there should be some APIs called Hook-something, but i
don't know how to use them appropriate.

Thanks
Marc Nyboe Kammersgaard

[Dan Appleman]

Intercepting out of process messages is something you don't want to even think
about doing in VB (though you're welcome to try if you have a lot of time to burn).

Our SpyWorks package does it (www.desaware.com), and you won't find a better
solution to that particular problem.

That's for intercepting or hooking messages. API functions is another matter
entirely - you're on your own for that.

Dan


Marc Kammersgaard wrote:

> I know now how to subclass a form or a control, which i have created, But
> say you want to subclass an outside program to intercept events or rutinecalls,
> and then respond to them from my program, before sending messages to the
> outside program. Is that possible? If so then please be so kind and give
> an example.
>
> I have heard that there should be some APIs called Hook-something, but i
> don't know how to use them appropriate.
>
> Thanks
> Marc Nyboe Kammersgaard