Need to override +(Class) class?

[Dave DeLong]

Hi everyone,

I'm building an app, and I've got a bunch of interface object  
definitions called "InputElements".  There are a couple subclasses,  
such as InputElementButton and InputElementSlider.

I'm building the interface via an "InputMode" object, that contains an  
array of InputElement objects.  As I build the interface, I loop  
through the InputElement objects in the InputModes array, and am doing  
the following:

for (InputElement * element in [inputMode elements]) {
        if ([element isKindOfClass:[InputElementButton class]]) {
                //build an InputViewButton
        } else if ([element isKindOfClass:[InputElementSlider class]]) {
                //build an InputViewSlider
        }
}

When I try to compile, I'm getting two errors:

  "_OBJC_CLASS_$_InputViewSlider", referenced from:
      [EMAIL PROTECTED] in CosMouseViewController.o
  "_OBJC_CLASS_$_InputViewButton", referenced from:
      [EMAIL PROTECTED] in CosMouseViewController.o


My question is, do I need to override the +(Class) class method for  
each InputElement subclass, and if so how do I make a Class object?

Thanks,

Dave
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