1.7 Hud and obstacles

So, for an upcoming project I was thinking it would be nice to have a slider that you click and drag to adjust various properties of an object. I have always been impressed by the sliders on XYObject, and guessed/assumed that the control panel rez'es the sliders and then updates their position to match where they are on the control panel - even if you manage to drag them off the panel they snap back into place...

So, I made my own "slider" object, which works basically fine in SL now - Rez an object, on touch set a timer to make sure we're on the slider's "track" and only moving within specified distance on the x axis. However, attach this to the HUD and it doesn't rez the sliders. On a whim, I attached XYObject to my hud and same results, the sliders don't rez... I don't know any way to make an object so you can drag it if it's got to remain linked together to be attached to the hud...

I guess my question is, will there be a way to make a "slider" that you can drag (my only point of reference where I've seen one of these is XYObject) that would attach to the hud?

And then, really, without something like this is there any other input we can GET from the HUD other than touching different button-prims? Don't get me wrong, I'm still thrilled to HAVE a HUD, just want to know what we can get out of it, and was hoping I could put sliders or something a bit more high-resolution than having "small","medium", and "large", "slow","medium","fast","fastest" buttons...

Er, not sure, how does XyObject's sliders work? Do they rez after the object is rezzed? I.e. seperate peices? If so... I don't see llRezObject working on a HUD anytime soon... could be wrong there.

Some GUI elements would be nice, but I imagine that'd be totaly seperate from the HUD system and not anytime soon.

From what I can tell Oz, yes, they seem to rez after you rez the control panel object - the only other possibility I can think of is that they're all linked and as soon as you rez it they become unlinked...