Lake Forest, IL USA
Experience: Intermediate
Platform: MultiCharts + CTS T4
Broker: Advantage Futures, IQFeed.net
Trading: YM, ES, EU, US, S
Posts: 153 since Jun 2011
Thanks Given: 109
Thanks Received: 147
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DLL = Dynamic Link Library
In the context of EasyLanguage, it's an external program with which EasyLanguage can send and receive information. Typically, a .dll is used to add functionality to EasyLanguage.
For example, I wrote a quick .dll using FreeBasic that allows for better random numbers to be generated within MultiCharts. I first wrote the function in FreeBasic that received the high and low number limit for the random number to be generated and then generated the high-quality random number, and then I wrote a function in EasyLanguage that supplies these high and low numbers to the .dll and receives the random number that the .dll passes back.
In your case, you'd probably want to write .dlls that can send emails, take screen shots, etc. How you create the .dll depends on what language you'd want to use - a lot of different programming languages can create them. I first tried with Visual Studio but that was very hard and I couldn't get it to work, most likely because Microsoft's programming tools no longer support the type of .dll technology that TradeStation/MultiCharts uses.
Freebasic allows you to create compact .dlls that MultiCharts can use, and it's not complicated programming. Also, there's a lot of existing code already out there in Freebasic, so you may not have to reinvent the wheel.
I've posted several .dlls in the MultiCharts forums (including the original source code) so you can reference that as you try to get your project going. Good luck!
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