hasCooldown, repairCost = GameTooltip:SetBagItem(bag, slot);

Sets the GameTooltip to contain text information about the specified item, as well as returning whether the item is "cooling down" and the cost to repair the item (which may be 0 (or nil?) if non-applicable).

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Arguments

(bag, slot)

bag

Numeric - the ID of the bag

slot

Numeric - the ID of the slot

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Returns

hasCooldown, repairCost

hasCooldown 

Boolean - if the item currently has a cooldown

repairCost 

Integer - the cost to repair the item, may be 0 or nil if the item cannot be repaired.

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Details

This simply sets the text of the game tooltip to contain various information about the item under the given slot.