03-08-2009, 10:43 PM
Hello,
I am using Trader Workstation (TWS) from Interactive Brokers. TWS is probably the most commonly used online trading application. It comes with an ActiveX/COM proprietary Application Programming Interface (API), which can be used in different programming languages. The TWS API package actually provides working sample programs in Visual Basic, C++ and Java.
Here is the link to the TWS API downloads:
http://www.interactivebrokers.com/en/p.p..._entity=uk
Click the tab Proprietary API.
I have downloaded and installed the API package and tried the VB sample program. It all works fine.
The actual COM type library sits in a file called Tws.ocx. I registered the library in QM and I can see all the available classes and methods. It contains control and non-control components. So far so good....
Now, I'm trying to use QM to automate some tasks in TWS. Compiling goes fine, but whatever I do I keep getting runtime error messages: "Error (RT) in Function: 0x8000FFFF, Catastrophic failure"
Here is the code I'm using to try to connect to the TWS application running on my PC:
Nothing wrong with the code, I think, but it gives a runtime error. As said, when I use the same method 'connect()' in Visual Basic with the same arguments, it all works fine. Does anyone have experience with TWS ActiveX API in QM? Why should a COM library that works in VB not work in QM? What am I doing wrong? Is it because the COM module contains control and non-control components that I should not use the _create statement? Any tips or ideas?
Thanks,
Ruud
I am using Trader Workstation (TWS) from Interactive Brokers. TWS is probably the most commonly used online trading application. It comes with an ActiveX/COM proprietary Application Programming Interface (API), which can be used in different programming languages. The TWS API package actually provides working sample programs in Visual Basic, C++ and Java.
Here is the link to the TWS API downloads:
http://www.interactivebrokers.com/en/p.p..._entity=uk
Click the tab Proprietary API.
I have downloaded and installed the API package and tried the VB sample program. It all works fine.
The actual COM type library sits in a file called Tws.ocx. I registered the library in QM and I can see all the available classes and methods. It contains control and non-control components. So far so good....
Now, I'm trying to use QM to automate some tasks in TWS. Compiling goes fine, but whatever I do I keep getting runtime error messages: "Error (RT) in Function: 0x8000FFFF, Catastrophic failure"
Here is the code I'm using to try to connect to the TWS application running on my PC:
typelib TWSLib {0A77CCF5-052C-11D6-B0EC-00B0D074179C} 1.0
str HostIP="" ;;leave blank if TWS runs on the same computer
int Port=7496
int ClientID=0
TWSLib.Tws Tws1._create
Tws1.connect(HostIP, 7496, 0)Nothing wrong with the code, I think, but it gives a runtime error. As said, when I use the same method 'connect()' in Visual Basic with the same arguments, it all works fine. Does anyone have experience with TWS ActiveX API in QM? Why should a COM library that works in VB not work in QM? What am I doing wrong? Is it because the COM module contains control and non-control components that I should not use the _create statement? Any tips or ideas?
Thanks,
Ruud