There seem to be some controls for windows that there aren't any functions to actually control, for example sliders, I quite fancied adding a volume slider in iTunes+ but it doesn't seem to be possible to get the status of a SliderControl at all. 

I presume they are there because they are used in Plus itself, but if developers can't even use them then shouldn't they be removed from the documentation to avoid confusion?

Either that, or Patchou should just not be lazy and give us all the events for them