Re: Creating event objects

Hi Robert, thanks for the reply.

>I'm afraid jawin does not currently support event sinking. I'm actually on
>the hook for an implementation. Unfortunately, the implementation I did for
>jSegue is based on the fact that event sinks are normally IDispatch based.

Sounds like fun!!!

>...so I can give you
>some info on how it could be done. We'd need to generate a C++ class that
>implements MbtQuotesNotify. Then each method would have to use JNI to call
a
>java method. The constructor of the C++ class should be passed the jobject
>global ref to the java object that will be the sink.

OK, I'm game.  I really appreciate the help.  I know there are a few of
these event interfaces in this package I'm using but once I get the pattern
down, it should be easy enough.

I guess what you're saying is that somehow we have to pass a "reference" to
a COM object instantiated in C++ native code as the first parameter to the
AdviseSymbol method.  Once that gets marshalled and passed, the event
method will be invoked on the C++ instance which in-turn needs to do a JNI
call to invoke it's equivalent on the Java side.  I do have some experience
doing this; that is the latter part where a C++ method calls a Java event
method.  I've got 0 experience with the C++ COM stuff. So, how to build the
C++ class, create an instance (that is, getting the right clsid to
instantiate the COM part of it); and how to marshal it...yadda, yadda... is
where I'd need some guidance.

Is doing this stuff in Visual C++ 6.0 OK?   I've been doing java instead
of .net for a while now.

Thanks Robert,
--john