Solved Detecting right-click in inventory?

Is there any way to detect if a player is right clicking on an item to move it to their inventory? I saw an old thread saying it was strictly client side but I just wanted to check again to see if it has changed since then.
The event I've been using to check is CanMoveItem but I don't really know where to start.

 

I'm gonna keep looking but OK

 

I figured out a way to detect it! The targetSlot always ends up as -1 when I move an item into my inventory with right click. Now the problem is when I try to detect what the target container is it always ends up as null? You can test the code out for yourself.

Code:

        private object CanMoveItem(Item item, PlayerInventory playerLoot, uint targetContainer, int targetSlot)
        {
            Puts("" + targetSlot);
            if(targetSlot == -1) {
                var container = playerLoot.FindContainer(targetContainer);
                if(container == null) { Puts("Container is null!"); }
                var sourcecontainer = item.GetRootContainer();
                var e = ItemManager.CreateByItemID(item.info.itemid, item.amount);
                e.MoveToContainer(sourcecontainer, -1); //NEED TO MOVE TO PLAYER INVENTORY
                return true;
            }
            return null;
        }