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»Forums Index »IQFeed Developer »IQFeed Developer Support »Delphi
Author Topic: Delphi (5 messages, Page 1 of 1)

mDelp
-Interested User-
Posts: 4
Joined: Dec 16, 2009


Posted: Dec 16, 2009 06:11 PM          Msg. 1 of 5
Does anyone have any sample programs that use Delphi? I have searched the forums, but do not see any. I am looking for COM History examples. I am working in Delphi 7.0

Thank you in advance!
-Mark

David
-DTN Evangelist-
Posts: 113
Joined: May 7, 2004

I'd rather be...


Posted: Dec 17, 2009 10:53 AM          Msg. 2 of 5
There are no examples that I know of - I'd suggest that you consider using the tcp/ip interfaece instead of COM. Clean and works well. It is more in line with how the DTN client is set up to operate too for all communications.

Delphi is a powerful and productive environment. Until I recently started doing some Android projects I did not realize how good it really was.

Good luck!

David

IQXP Software
http://www.iqxp.com

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mDelp
-Interested User-
Posts: 4
Joined: Dec 16, 2009


Posted: Dec 17, 2009 11:06 AM          Msg. 3 of 5
Thanks, David. I am willing to try the TCP/IP interface. Delphi does not handle COM very well, that's for sure.

So, does anyone have any samples or code fragments using Delphi with the TCP/IP interface to get me started?

David
-DTN Evangelist-
Posts: 113
Joined: May 7, 2004

I'd rather be...


Posted: Dec 17, 2009 02:40 PM          Msg. 4 of 5
I use a set of components (Internet Component Suite) by François Piette now distributed from http://www.overbyte.be/frame_index.html - I do not know what comes with Delphi 7 but it's tcp/ip client components are probably fine.

I have used ICS for years with little to no issues. Windows is an event driven system - these work in that paradigm in that you do not have to worry about creating a separate thread to service the dynamic data coming in. Just set up event handlers for the respective socket responses: login ops, quotes, history, etc. Simple and can handle high internal bandwidth. Make sure that your processing code in the handlers is fast, especially if displays get involved.

My system can handle 1800 symbols that are very active with no issues on what now would be considered a slow computer. The DTN client has become very efficient and stable over the years and now they have taken it up a notch higher.

Good luck and have fun on your sojourn!

David

IQXP Software
http://www.iqxp.com

LiveWire Update Service
PO Box 1417
Fairfield, IA 52556
641-472-8393
http://www.livewire-cablesoft.com/

mDelp
-Interested User-
Posts: 4
Joined: Dec 16, 2009


Posted: Dec 17, 2009 03:50 PM          Msg. 5 of 5
Thanks again, David! ICS looks good. I will try it out.
 

 

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