[vtkusers] vtkCallbackCommand !!

[A J]

Thanks John, Alizier, and Vidyadhar for their help!

It was 'static' that did the trick

However, does anyone know why it will only work if I observe for 'AnyEvent', 
but it won't work for anything else.. really I want my callback to be called 
when I press enter, so I put 'EnterEvent', but it doesnt work
Nor will it work for others like 'MouseMoveEvent' or "KeyPressEvent' etc

So heres a snippet:

CallbackCommand->SetCallback( ScreenDisplay::DoStuff);
RenWin->AddObserver( vtkCommand::AnyEvent, CallbackCommand );  //won't work 
for EnterEvent?

while(1)
{
  RenWin->Render();
}

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