SWQUote.set_cb 設定callback

此功能允許用戶為訂閲方法設定一個回調函數。這樣每當訂閱的股票數據更新時，設定的自定義回調函數將被調用，即時處理股市數據。

Example

input
def my_cb(data:kgi.SWMarketData):
    if data.data_type ==2:
        display('這一筆成交')
        display(data)
    if data.data_type ==3:
        display('累計成交更新')
        display(data)

api.SWQUote.set_cb(my_cb)
output
'這一筆成交'
SWMarketData(exchange=TAIFEX, 
	symbol=TXFF6, 
	data_type=2, 
	datetime=16:43:29.656, 
	open=45101.0, 
	high=45285.0, 
	low=44911.0, 
	close=45115.0, 
	volume=1, 
	total_volume=12046, 
	bid_prices=[45111.0, 45110.0, 45109.0, 45108.0, 45106.0], 
	bid_volumes=[2, 2, 5, 6, 2], 
	ask_prices=[45116.0, 45117.0, 45118.0, 45121.0, 45122.0], 
	ask_volumes=[1, 1, 4, 4, 4], 
	simtrade=0, 
	status_remarks=0, 
	raise_fall_remarks=0, 
	delay_time=0.0
)
'這一筆成交'
SWMarketData(exchange=TAIFEX, 
	symbol=TXFF6, 
	data_type=2, 
	datetime=16:43:29.656, 
	open=45101.0, 
	high=45285.0, 
	low=44911.0, 
	close=45116.0, 
	volume=1, 
	total_volume=12046, 
	bid_prices=[45111.0, 45110.0, 45109.0, 45108.0, 45106.0], 
	bid_volumes=[2, 2, 5, 6, 2], 
	ask_prices=[45116.0, 45117.0, 45118.0, 45121.0, 45122.0], 
	ask_volumes=[1, 1, 4, 4, 4], 
	simtrade=0, 
	status_remarks=0, 
	raise_fall_remarks=0, 
	delay_time=0.005
)
'累計成交更新'
SWMarketData(exchange=TAIFEX, 
	symbol=TXFF6, data_type=3, 
	datetime=16:43:29.682, 
	open=45101.0, 
	high=45285.0, 
	low=44911.0, 
	close=45116.0, 
	volume=1, 
	total_volume=12048, 
	bid_prices=[45111.0, 45110.0, 45109.0, 45108.0, 45106.0], 
	bid_volumes=[2, 2, 5, 6, 2], 
	ask_prices=[45116.0, 45117.0, 45118.0, 45121.0, 45122.0], 
	ask_volumes=[1, 1, 4, 4, 4], 
	simtrade=0, 
	status_remarks=0, 
	raise_fall_remarks=0, 
	delay_time=0.008
)

Attribute

callback:回調函數，當訂閲的股票數據更新時將被呼叫。回調函數需要定義一個接收數據的參數，該參數會在股票數據更新時傳遞給函數。

Return Attribute

此方法不直接返回值，而是在訂閲股票後，根據callback的編制邏輯，當有相關數據更新時執行回調函數，從而實現即時數據處理和反應。