[news.eclipse.platform.swt] Label Decorator problem

["A. V." <not@xxxxxxx>]

I am trying to attach a lightweight decorator to a TreeViewer. I added the
extension point and created the Decorator class (implementing the
LightweightDecorator interface). The objectClass is my own object in the
treeviewer. After that i added this line to the code where i was creating
the treeviewer:

treeviewer.setLabelProvider(new DecoratingLabelProvider(labelProvider,
MyPlugin.getDefault().getWorkbench().getDecoratorManager("org.myplugin.decor
ator"));


When i run the run-time workbench, isee a new entry in the decorations
preference page. But enabling and disabling it doesnt do anything. It gives
me no decorations. I am sure i am missing something small. Does anyone know
what I am doing wrong?

Thanks