Create your own MetaTrader extension (dll) - Page 7

veematics · #61 (**permalink**) 06-24-2009, 07:35 AM

Hello,
i'm getting confuse.. i create a dll that connect to internet, i copy the dll only on many metarader in my local computer and found no problem...

but the problem arise when i copy my dll to another computer. it returns error 126.

may i know what's wrong ? how to solve the problem ? i'm using with visual C++ on visual studio 2008.

please help

Mistigri · #62 (**permalink**) 07-16-2009, 12:04 AM

Quote:

Originally Posted by veematics

Hello,
i'm getting confuse.. i create a dll that connect to internet, i copy the dll only on many metarader in my local computer and found no problem...

but the problem arise when i copy my dll to another computer. it returns error 126.

may i know what's wrong ? how to solve the problem ? i'm using with visual C++ on visual studio 2008.

please help

Hi Veematics, maybe you are the gentleman who just sent me an email about this problem, but I figured I would post my reply on this forum for other to see

Quote:

Hello,

Make sure you compile your dll with MFC Statically Linked…

Go to your project properties, under Configuration Properties | General | Use of MFC
Make sure that you have “Use MFC in a Static Library “ selected.
Then rebuild your dll.

veematics · #63 (**permalink**) 07-22-2009, 03:56 PM

Hello Mistigri, thanks for the insight.

I'm testing with strategy tester my EA and i also wonder why the result with DLL and the original logic (without DLL) is different..

do you had similiar experience

Mistigri · #64 (**permalink**) 07-23-2009, 04:29 PM

You mean like when calculating an Indicator?

Then yes, for example I wrote my own ATR function in a dll and what happens is that my DLL ATR uses wilder's smoothing while MT4 just uses a simple average ... Same with any of the indicators written by wilders and other indicators who seem to have multiple versions ...

I would first make sure your indicators give the same results as the MT4 platform from the DLL ...

Patrick

dwmcqueen · #65 (**permalink**) 09-15-2009, 01:35 PM

Anyone have any types or general best practices for using a dll in an indicator (how to get the range of prices to the dll, etc)? I want to have a dll calculate the values instead of using functions in MetaTrader.

Thanks!

xarlotie · #66 (**permalink**) 09-30-2009, 12:36 PM

mistigriFX.com cannot be found anymore. what could be the reason?

xarlotie · #67 (**permalink**) 10-01-2009, 09:30 AM

Quote:

Originally Posted by Mistigri

Hi Tim,

When using dev-c++ the def file is generated for you automatically the problem is that you end up with function names that look like this :

PHP Code:


			
EXPORTS

    _Z11GetSMAArrayP8RateInfoiiPd@16 @ 1

    _Z12GetHighValueP8RateInfoii = _Z12GetHighValueP8RateInfoii@12 @ 2

    _Z12GetHighValueP8RateInfoii@12 @ 3

    _Z13GetCloseValueP8RateInfoii = _Z13GetCloseValueP8RateInfoii@12 @ 4

    _Z13GetCloseValueP8RateInfoii@12 @ 5

    _Z11GetSMAArrayP8RateInfoiiPd = _Z11GetSMAArrayP8RateInfoiiPd@16 @ 6

Now you need to make sure you add the following check around your code

PHP Code:


			
#ifdef __cplusplus

extern "C" {

#endif





#ifdef __cplusplus

}

#endif

Attached are the sample files I did for VS2008 but this time using dev-c++ ...
Hope this helps

how do we test those files?? what should we do? As far as i know, host applications for Dev C++ are only exe. How can we use the ex4?

xarlotie · #68 (**permalink**) 10-01-2009, 09:38 AM

Quote:

Originally Posted by xarlotie

how do we test those files?? what should we do? As far as i know, host applications for Dev C++ are only exe. How can we use the ex4?

oh! what a very stupid question! sorry for this..i realized the answer to it..just ignore this post..thanks!