Listen for inventory transfer?

You can't directly move something from the creative inventory to a chest.

 

Code (Java):

    @EventHandler
    public void onClick(InventoryClickEvent e) {
        if (e.getWhoClicked() instanceof Player) {
            Player p = (Player) e.getWhoClicked();
           ItemStack clicked = e.getCurrentItem();
            if (e.getSlotType() == SlotType.CONTAINER) {
                if (p.getGameMode() == GameMode.CREATIVE) {
                    if (e.getInventory().getType() == InventoryType.PLAYER) {
                        // whatever
                    }
                }
            }

        }

    }

I don't think he means creative inventory as in "The creative mode inventory, with only 9 QUICKBAR slots and nothing else.", but the player inventory if the player is in creative mode.

 

Posted a small code and then that appeared ^ He has a good example