Events in Interface Classes

[simonm]

I have an interface class that declares a Public Event.

In my Implementation class, how do I implement that event so that clients of my implementation class can trap events raised?

[penagate]

You don't do anything in an interface. An interface just contains a template that other classes can implement. The "events" are subs/funtions. This is an example

' Interface IBanana
 
Public Sub GotBanana(ByRef pobjBanana As CBanana)
    '
End Sub
 
Public Sub BadBanana()
    '
End Sub

and you implement it like this:

' Class CMonkey
 
Implements IBanana
 
Private Sub IBanana_GotBanana(ByRef pobjBanana As CBanana)
    EatBanana pobjBanana
End Sub
 
Private Sub IBanana_BadBanana()
    ThrowUp
End Sub

If on the other hand, by implement you mean raise the event/notification, you do it like this (from a class/module:

' Module MEcosystem
 
' Throw the event
Public Sub GiveHimABanana(ByRef pobjMonkey As CMonkey, _
                          ByRef pobjBanana As CBanana)
    ' Reference the class implementing the event, not the interface
    pobjMonkey.GotBanana pobjBanana
End Sub

Congrats on your 666th post BTW

[brucevde]

VB does not support Events in "inherited" interfaces.

PRB: Error 459 Trying to Use Alternate Object Interface

[simonm]

Thanks for the help people...