API:TransferBetweenBackpacks

UI Lua API · Item functions
Version: WAR 1.4.8

Asks the server to move an item out of the backpack it is in, without choosing a destination slot.

TransferBetweenBackpacks(slot, backpackType)

Arguments

slot: number – Slot of the item inside the backpack, starting at 1.
backpackType: number – Which backpack the item is in, as an EA_Window_Backpack.TYPE_* value: 2 (TYPE_INVENTORY), 3 (TYPE_CURRENCY) or 4 (TYPE_CRAFTING).

Nothing.

The client sends a move request for the item with a fixed special destination instead of a slot. Where the item ends up is decided by the server.
slot is truncated to its low byte (0–255). For backpackType 2, 3 and 4 it is converted to an absolute inventory slot; for any other value it is used without conversion.
The client does not check that the slot holds an item.
The stock backpack window calls it for crafting and currency items, passing the backpack currently shown.
The function needs at least two arguments and only reads the last two.

None besides the generic Invalid Parameters message when an argument is not a number.

From default/ea_backpackwindow/source/backpackutils.lua:

elseif ( isTradeSkillItem or isCurrencyItem )
then
    TransferBetweenBackpacks( slot, EA_Window_Backpack.currentMode )