hi msg, i do use QT with IB and it works just fine for me; only disadvantage, you need to always have IB 'on' for data-input cancellation fees ?? regs, paulus
the cancel fee described on: http://www.interactivebrokers.com/html/generalAccount/otherFees.html is not specific to the API. The same cancel fees would apply for orders placed and/or canceled through TWS.
Exchange Cancel and/or Modify Order Fees US Direct API stock orders (does not apply to US smart API orders)=USD 0.12/Cancel or modify order. From what i read above , there's a fee only when you modify or cancel a stock order with a specific destination and through API. No fees when you modify or cancel an order sent via Api to smart or directly on tws. There's also an execution credit. I'm not an English native speaker, so maybe I'm misunderstanding what I read, if this is the case I apologize in advance.