Page 1 of 5

1. Introduction
2. Polymorphism and Interfaces
3. Using it (1)
4. Using it (2)
5. Why bother?

Comments

1. James Crowley
   28 Dec 2004 at 09:34

   If you need to access methods specific to that object, then you need to declare a variable for that object. For instance,
   

   
   Dim obj As myActualObject
   

   
   Set obj = New myActualObject
   

   
   rather than the interface that myActualObject might be implementing...

2. Luke Lesurf
   02 Jan 2004 at 11:45

   good stuff this

3. Sparvhok
   22 Oct 2003 at 04:57

   Hi there,
   

   
   Great article, very interesting. But when I tried to implement the idea it worked well until. When trying to create public methods in the Implementing Classes of the Interface other than the methods provided by the interface I stumbled upon a problem.
   

   
   The autocompletion of VB6 could not find the methods, why is that? And when I type in the method by hand and run the app I get the error: Method or Data member not found
   

   
   Which means that inspite of which type of Class I initialize I only have access to those methods that are implemented in the Interface class, is there a way around it? Or have I totally missunderstood it?
   

   
   Rgds Sparvhok

4. Developer Fusion Bot
   01 Jan 1999 at 00:00

   This thread is for discussions of Polymorphism in VB.

James first started this website when learning Visual Basic back in 1999 whilst studying his GCSEs. The site grew steadily over the years while being run as a hobby - to a regular monthly audience ...