Using an clickable icon to activate/deactive drag/drop/swap on a lua quickslot bar

[Delone]

Working on a modified version of D.H1cks PagedSlots, and have things working pretty much as I want them, but in use I'm finding that it's very easy to accidently drag buttons off - it's being used as a hotbar that fades out when not in combat, but I think what is happening is if I click a button just as a mob dies and the bar closes, it seems to drag the button off the bar.

What I want to know is:

If I create a clickable button on the bar, can I use it to toggle a on/off method for disabling drag/drop/swap operations whilst still keeping clicks on items in the bar active?

Thanks, Delone.