events in interface definition ...

[sudhir]

hi all the genius out there ...,
i am trying to develop a report engine like crystal report (something better ) ...for that i need to define a interface which has events .so that all the classes which implement this interface will also define the events ...i felt this is how the code should go ..

'interface interface1 ( i call this class interface1)
public event event1()

public function func1()

end function

'a class which implements this interface should be like this(I feel) ..

implements interface1

public event interface1_event1()

public function interface1_func1()
'some lines
'under some condition raise event1
end function

but this doesn't work because a event name cannot have a underscore .How to do this ?...
I want the events raised by this class which implements the interface to be recieved when the object is referenced through the interface (interface1) .
i.e
dim ob1 as Interface1
set ob1 = new class1 (the class which implements interface1)
'this above line would give a runtime error ...

ob1.func1() 'this would fire the event ...

'the event code
private sub ob1_event1()


end sub
'but this event cannot be recieved ..



i wish i could explain it better ...
do u have any solution or work arounds ...

[Anglo Saxon]

Hmmm... if I understand you correctly, unfortunately because of VB's lack of 'true inheritance', you cannot do what you want, however, there are workarounds, read this article :

http://www.devx.com/premier/mgznarch...400/pc0400.asp


--
AS

[sudhir]

Hi Saxon,
it's really nice of u to take so much of effort to answer this question with pasted links ...
.It served my purpose completely ...
thanks and thanks a lot ...
bye