Getting information from an item in a GuiContiner class

[Flenix]

Hey guys,

 

I need to somehow call information from the NBT of an item the player is holding, in the GuiContainer class for a block. The player will only ever be holding one item (as you have to right click the block with this item for the GUI to open).

 

How would I go about doing this? I'm assuming I'll probably need packets?

 

Thanks

[diesieben07]

Well, the NBT data of an ItemStack gets synced to the client, so you should just be able to do something like stack.stackTagCompound