[1.6.4]Giving xp to a player after he/she uses a furnace

[Mecblader]

Hello, I am creating a mod that has a custom furnace. I need  a way to give the player who smelted ore in the furnace, a custom xp value. I can't find a method that detects when a player pulls out a an item from a specific slot and then give him/her xp according to what they pulled out. Also could someone tell me how i can make a specific slot not accept any items from a player, like slot 2 in a vanilla furnace. All help is appreciated, thank you in advance.

[larsgerrits]

You should take a look at the ContainerFurnace class, and specificly and the row:

this.addSlotToContainer(new SlotFurnace());

[Mecblader]

Thanks