Raising COM events from C++?

[thesleepylizard]

In VB6 it's really easy to write COM objects, and to raise events:

Public Event SomethingImportantOccured (Data as string)
.
.
.
RaiseEvent SomethingImportantOccured ("Bingo!")
.
.
.
Private Sub ImportantObject_SomethingImportantOccured(Data as string)
    '
End Sub

In C++, I want to do write a COM object in a COM library, and do exactly the same thing. But, I'm not sure how to declare, raise, and handle COM events in C++.

Any ideas? Or, can anyone point me in the right direction/documentation?

Thanks for your time,
-sleepy

 

[LazyMe]

Thos are called connection points and are actually a separate interface of the COM object.
Greetings,
Rick

 

[mattKnight]

LazyMe

I can create them easily enough and handle them from within VB...

where I get stuck is with trying to handle them in C++, can you offer any good resources to get me going?

Take Care

Matt
If at first you don't succeed, skydiving is not for you.

 

[LazyMe]

It depends on how you're writing your COM server (raw C++, ATL, MFC). There is a really good book about writing COM servers in C++. It's called "Developer's Workshop to COM and ATL 3.0", by Andrew Troelsen. As the title suggests it's about writing them in ATL, but it starts out with a quite thorough explanation about how to do it in raw C++.
Greetings,
Rick

 

[mattKnight]

LazyMe
>I can create them easily enough and handle them from within VB...

should read

I can create them easily enough in C++ using ATL and handle them from within VB...

after reading the post it was spectatularily unclear what I meant...


I use ATL for writing C++ com objects...
I have the Wrox books by Grimes etc, but they don't go into sinking events!

I'll look up that book, Is there any web resource (kinda short on £££ now) Take Care

Matt
If at first you don't succeed, skydiving is not for you.

 

[LazyMe]

I don't know about any web resource, but you might want to search the web and the MSDN about "IDispEventImpl", which is a client template to sink the events and "IProvideClassInfo2Impl" which needs to be implemented on the server for that to work.
Greetings,
Rick