Block Inventory Slots (stop them from being shift-clicked)

Hey,

I want to stop users from shift-clicking certain items into certain slots.
Is there any right way to do this?

 

use the inventoryclick event

 

How should I use it?
I have already blocked the slot so people can't put the item in there, but they can still shift-click it in.

 

Check if event.isShiftClick(), and they are clicking in the other part of the inventory

 

I tried that, but is there a way to get in what slot the Item went? because Slot 1 should be allowing it, but slot 2 shouldn't. At the moment, both are not allowing it.

 

You should base this of how minecraft handles this ;3

 

And the derp of the day goes to me.
Should have thought of that earlier.