IDispatch/callback objects

[everkleer]

I'm trying to use Oracles queueing features in powerbuilder but when I send the callback object that I've created to the MonitorStart function I get an error because the object is invalid. I have done the same thing successfully in Visual Basic and all I needed for a callbackobject was a class I created with a NotifyMe(ByVal Ctx as Variant, ByVal Msgid as Variant) but I created a nonvisual object for powerbuilder with that function and I get the error like I said. From what I've read online, the object needs to be inherited from IDispatch so I think, even though I didn't need to specify IDispatch anywhere in the VB object, that may be my problem.

So I think my question is basically does anyone know how to make a userobject/nonvisualobject inherit from IDispatch?

Thanks
Dan