It's interesting to make external code with DLL. as far as i know it makes reverse engineering more difficult rather than ex4 files..

however, i would like to have chunk of codes that can be use to make http request or even directly connect to remote mysql... if any of you could provide or have information regarding the solution... please let me know...

Hello guys!

I have a problem trying to use this library.

I put them in metatrader\experts\library
I correctly define the path for the .def file

... but my EA print on the register this error: -65495

What can be the problem?
And, most, how to solve it?

Is it possible that the .def file can be corrupted?

Thanks in advance...

Hi Veematics,
Sorry did not see your post till now :P
Yes I used to work with IBFX about two and half years ago, I do some consulting with them every once in a while.

I don't collect ticks anymore, it's too much work and I don't really have a use for it anymore

Patrick

Not sure, that library looks familiar, are you using that to connect to a website? Have you tried using wininet.lib instead?

I don't think the issue here is the def file or your dll would not even load and work properly ... If you can provide more info ( ie some piece of the code you're using in the dll ) then maybe I can try to help.

Patrick

I see you are big businessman???
This is not the forum where you can sell such shit you have.

What exactly did you modify in DGC OZFX EA

__________________
russian trader
http://stace.mt4stats.com/

Hi Patrick!

I found the library and the source code here:
How to build a NN-EA in MT4

I placed there my post, but admin moved it into this thread...

Thanks!

Hi,

I want an EA to read a file, that's not located on the local machine but on the Internet.
FileOpen only works when the file is located in the metatrader directory.

I tired it with a c#-dll but get the error message "cannot call function".

Has s.o. an easy solution for this problem??

Thanks

Solution to Error 127 - cannot call function

Okay,

I finally got back to looking at this last night. The problem has to do with associating the wrong def file or no def file with the dll.

This is how you fix it in Visual Studio 2008 Express -

1) Go to project, properties - or alt-F7
2) Go to Linker - double click on it and you get a drop down list
3) Select Input
4) Change the Module Definition File to be whatever you named your def file
Make sure it has the path and full name of the file - such as .\MyDef.def

In 2008 Express version, this is not generated automatically like in the professional versions.

This is the main culprit. There may be other linker/compiler issues that may still cause a problem. What you need to do is to load the ExportFunction example project that ships with Metatrader4. This is found in the experts/DllSample folder. Now go and look at its properties page by page, item by item, and everywhere that it says ExportSample, or ExpertSample, (or whatever it uses pertaining to its naming conventions) change your properties to match your own naming conventions. I went through and did this item by item, and then checked if I got the 127 error. I continued to get that error until the correct module definition file was explicity stated as a dependency. I am not saying that there may not be other things besides that, because I changed everything to match the sample, but once the def file was explicit, that fixed it.

Remember that the dll has to be in the lib folder. You have to have an mqh file in the include directory which explicity imports the dll, and lists the function names with parameters, return types, etc. And then in your indicator or expert you must include the header file. That should do it.

CodersGuru and Mistigri both have good examples on how to do this, but the non-professional Express versions do not explicity add the def file as a dependency, and that is the root of the problem all of us using the Express versions have. (At least it doesn't explicity add it when selecting the particular project to make that we who have the problem, selected.)

See attached image. Remember, you probably still want to make sure your compiler and linker values match those of the exportfunction sample that comes with Metatrader.

Regards,
MG

Attached Images

Properties.JPG (74.8 KB, 203 views)

Sorry have not had a chance to look at it yet, I have been busy, but I did not forget and I will try to get back to you on that.

You have 2 options, write a C# app that will connect to the website, write a data file on your computer and read it from MT4 or write a C++ dll that will connect to the website read the data ....

If you go the C# route, so far it seems way faster than the DLL route ... If you want to write a c++ DLL here is some code to help you get started.
MT4 DLL Web Connect | Mistigri


Thanks for the info! If you don't mind I will reproduce some parts of your posts on my site...

No problem, I know a lot of people go there to learn, so hopefully it will help the Express users and gnu, etc. users.

-MG