## find:
	def UseItemSlot(self, slotIndex):
		if constInfo.GET_ITEM_QUESTION_DIALOG_STATUS():
			return

		slotIndex = self.__InventoryLocalSlotPosToGlobalSlotPos(slotIndex)

		self.__UseItem(slotIndex)
		mouseModule.mouseController.DeattachObject()
		self.OverOutItem()


## add bellow:
	if app.ENABLE_FAST_CHEST_OPEN:
		def IsTreasureBox(self, slotIndex):
			itemVnum = player.GetItemIndex(slotIndex)
			item.SelectItem(itemVnum)

			if item.GetItemType() == item.ITEM_TYPE_GIFTBOX:
				return True


			## you can set own treasures which not have item giftbox type, simply add vnums here
			treasures = {
				0: 50011,
				1: 50024,
				2: 50025,
				3: 50031,
				4: 50032,
			}

			if itemVnum in treasures.values():
				return True

			return False

		def SendMultipleUseItemPacket(self, slotIndex):
			for i in xrange(player.GetItemCount(slotIndex)):
				self.__SendUseItemPacket(slotIndex)



## find:
	def __UseItem(self, slotIndex):
		ItemVNum = player.GetItemIndex(slotIndex)
		item.SelectItem(ItemVNum)

## add bellow:
		if app.ENABLE_FAST_CHEST_OPEN:
			if app.IsPressed(app.DIK_LCONTROL) and self.IsTreasureBox(slotIndex):
				self.SendMultipleUseItemPacket(slotIndex)
				return