Cancelling Orders

An order can be cancelled from the API with the functions IBApi::EClient::cancelOrder and IBApi::EClient::reqGlobalCancel. cancelOrder can only be used to cancel an order that was placed originally by a client with the same client ID (or from TWS for client ID 0). It takes one argument, which is the original order ID.

•             client.cancelOrder(nextOrderId - 1, "");

•         client.cancelOrder(cancelID, Order.EMPTY_STR);

•         client.cancelOrder(nextOrderId - 1, "")

•     m_pClient->cancelOrder(m_orderId-1, "");

•             self.cancelOrder(self.simplePlaceOid, "")

IBApi::EClient::reqGlobalCancel will cancel all open orders, regardless of how they were originally placed.

•             client.reqGlobalCancel();

•         client.reqGlobalCancel();

•         client.reqGlobalCancel()

•     m_pClient->reqGlobalCancel();

•         self.reqGlobalCancel()